9205 lines
250 KiB
Go
9205 lines
250 KiB
Go
package structs
|
||
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||
import (
|
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"bytes"
|
||
"container/heap"
|
||
"crypto/md5"
|
||
"crypto/sha1"
|
||
"crypto/sha256"
|
||
"crypto/sha512"
|
||
"encoding/base32"
|
||
"encoding/base64"
|
||
"encoding/hex"
|
||
"errors"
|
||
"fmt"
|
||
"io"
|
||
"math"
|
||
"net"
|
||
"net/url"
|
||
"os"
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||
"path/filepath"
|
||
"reflect"
|
||
"regexp"
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||
"sort"
|
||
"strconv"
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||
"strings"
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||
"time"
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||
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||
"github.com/gorhill/cronexpr"
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||
"github.com/hashicorp/consul/api"
|
||
hcodec "github.com/hashicorp/go-msgpack/codec"
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||
"github.com/hashicorp/go-multierror"
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||
"github.com/hashicorp/go-version"
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||
"github.com/hashicorp/nomad/acl"
|
||
"github.com/hashicorp/nomad/helper"
|
||
"github.com/hashicorp/nomad/helper/args"
|
||
"github.com/hashicorp/nomad/helper/uuid"
|
||
"github.com/hashicorp/nomad/lib/kheap"
|
||
psstructs "github.com/hashicorp/nomad/plugins/shared/structs"
|
||
"github.com/mitchellh/copystructure"
|
||
"github.com/ugorji/go/codec"
|
||
"golang.org/x/crypto/blake2b"
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||
)
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var (
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// validPolicyName is used to validate a policy name
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validPolicyName = regexp.MustCompile("^[a-zA-Z0-9-]{1,128}$")
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// b32 is a lowercase base32 encoding for use in URL friendly service hashes
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b32 = base32.NewEncoding(strings.ToLower("abcdefghijklmnopqrstuvwxyz234567"))
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)
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type MessageType uint8
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const (
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NodeRegisterRequestType MessageType = iota
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NodeDeregisterRequestType
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NodeUpdateStatusRequestType
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||
NodeUpdateDrainRequestType
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JobRegisterRequestType
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||
JobDeregisterRequestType
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||
EvalUpdateRequestType
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||
EvalDeleteRequestType
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||
AllocUpdateRequestType
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||
AllocClientUpdateRequestType
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||
ReconcileJobSummariesRequestType
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||
VaultAccessorRegisterRequestType
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VaultAccessorDeregisterRequestType
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||
ApplyPlanResultsRequestType
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||
DeploymentStatusUpdateRequestType
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||
DeploymentPromoteRequestType
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||
DeploymentAllocHealthRequestType
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||
DeploymentDeleteRequestType
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||
JobStabilityRequestType
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||
ACLPolicyUpsertRequestType
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ACLPolicyDeleteRequestType
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||
ACLTokenUpsertRequestType
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||
ACLTokenDeleteRequestType
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ACLTokenBootstrapRequestType
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||
AutopilotRequestType
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||
UpsertNodeEventsType
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||
JobBatchDeregisterRequestType
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AllocUpdateDesiredTransitionRequestType
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NodeUpdateEligibilityRequestType
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BatchNodeUpdateDrainRequestType
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SchedulerConfigRequestType
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)
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const (
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// IgnoreUnknownTypeFlag is set along with a MessageType
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// to indicate that the message type can be safely ignored
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||
// if it is not recognized. This is for future proofing, so
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||
// that new commands can be added in a way that won't cause
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||
// old servers to crash when the FSM attempts to process them.
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||
IgnoreUnknownTypeFlag MessageType = 128
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||
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||
// ApiMajorVersion is returned as part of the Status.Version request.
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||
// It should be incremented anytime the APIs are changed in a way
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||
// that would break clients for sane client versioning.
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ApiMajorVersion = 1
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// ApiMinorVersion is returned as part of the Status.Version request.
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// It should be incremented anytime the APIs are changed to allow
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// for sane client versioning. Minor changes should be compatible
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// within the major version.
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ApiMinorVersion = 1
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||
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ProtocolVersion = "protocol"
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APIMajorVersion = "api.major"
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APIMinorVersion = "api.minor"
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||
GetterModeAny = "any"
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||
GetterModeFile = "file"
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||
GetterModeDir = "dir"
|
||
|
||
// maxPolicyDescriptionLength limits a policy description length
|
||
maxPolicyDescriptionLength = 256
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||
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// maxTokenNameLength limits a ACL token name length
|
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maxTokenNameLength = 256
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||
|
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// ACLClientToken and ACLManagementToken are the only types of tokens
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||
ACLClientToken = "client"
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ACLManagementToken = "management"
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||
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||
// DefaultNamespace is the default namespace.
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DefaultNamespace = "default"
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DefaultNamespaceDescription = "Default shared namespace"
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||
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||
// JitterFraction is a the limit to the amount of jitter we apply
|
||
// to a user specified MaxQueryTime. We divide the specified time by
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||
// the fraction. So 16 == 6.25% limit of jitter. This jitter is also
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// applied to RPCHoldTimeout.
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JitterFraction = 16
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// MaxRetainedNodeEvents is the maximum number of node events that will be
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// retained for a single node
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MaxRetainedNodeEvents = 10
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||
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// MaxRetainedNodeScores is the number of top scoring nodes for which we
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// retain scoring metadata
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MaxRetainedNodeScores = 5
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||
|
||
// Normalized scorer name
|
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NormScorerName = "normalized-score"
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||
)
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||
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||
// Context defines the scope in which a search for Nomad object operates, and
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// is also used to query the matching index value for this context
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type Context string
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const (
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Allocs Context = "allocs"
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Deployments Context = "deployment"
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Evals Context = "evals"
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Jobs Context = "jobs"
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Nodes Context = "nodes"
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Namespaces Context = "namespaces"
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Quotas Context = "quotas"
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All Context = "all"
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)
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// NamespacedID is a tuple of an ID and a namespace
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type NamespacedID struct {
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ID string
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Namespace string
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}
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// NewNamespacedID returns a new namespaced ID given the ID and namespace
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func NewNamespacedID(id, ns string) NamespacedID {
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return NamespacedID{
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ID: id,
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Namespace: ns,
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}
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}
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func (n NamespacedID) String() string {
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return fmt.Sprintf("<ns: %q, id: %q>", n.Namespace, n.ID)
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}
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// RPCInfo is used to describe common information about query
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type RPCInfo interface {
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RequestRegion() string
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IsRead() bool
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AllowStaleRead() bool
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IsForwarded() bool
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SetForwarded()
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}
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// InternalRpcInfo allows adding internal RPC metadata to an RPC. This struct
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// should NOT be replicated in the API package as it is internal only.
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type InternalRpcInfo struct {
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// Forwarded marks whether the RPC has been forwarded.
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Forwarded bool
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}
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// IsForwarded returns whether the RPC is forwarded from another server.
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func (i *InternalRpcInfo) IsForwarded() bool {
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return i.Forwarded
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}
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// SetForwarded marks that the RPC is being forwarded from another server.
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func (i *InternalRpcInfo) SetForwarded() {
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i.Forwarded = true
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}
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// QueryOptions is used to specify various flags for read queries
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type QueryOptions struct {
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// The target region for this query
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Region string
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// Namespace is the target namespace for the query.
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Namespace string
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// If set, wait until query exceeds given index. Must be provided
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// with MaxQueryTime.
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MinQueryIndex uint64
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// Provided with MinQueryIndex to wait for change.
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MaxQueryTime time.Duration
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// If set, any follower can service the request. Results
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// may be arbitrarily stale.
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AllowStale bool
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// If set, used as prefix for resource list searches
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Prefix string
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// AuthToken is secret portion of the ACL token used for the request
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AuthToken string
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InternalRpcInfo
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}
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func (q QueryOptions) RequestRegion() string {
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return q.Region
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}
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func (q QueryOptions) RequestNamespace() string {
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if q.Namespace == "" {
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return DefaultNamespace
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||
}
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return q.Namespace
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}
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// QueryOption only applies to reads, so always true
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func (q QueryOptions) IsRead() bool {
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return true
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}
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func (q QueryOptions) AllowStaleRead() bool {
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return q.AllowStale
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}
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type WriteRequest struct {
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// The target region for this write
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Region string
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// Namespace is the target namespace for the write.
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||
Namespace string
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// AuthToken is secret portion of the ACL token used for the request
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AuthToken string
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InternalRpcInfo
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}
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func (w WriteRequest) RequestRegion() string {
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// The target region for this request
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return w.Region
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}
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func (w WriteRequest) RequestNamespace() string {
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||
if w.Namespace == "" {
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return DefaultNamespace
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||
}
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return w.Namespace
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}
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// WriteRequest only applies to writes, always false
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func (w WriteRequest) IsRead() bool {
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return false
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}
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func (w WriteRequest) AllowStaleRead() bool {
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return false
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||
}
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||
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// QueryMeta allows a query response to include potentially
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// useful metadata about a query
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||
type QueryMeta struct {
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// This is the index associated with the read
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Index uint64
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||
// If AllowStale is used, this is time elapsed since
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||
// last contact between the follower and leader. This
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// can be used to gauge staleness.
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LastContact time.Duration
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||
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||
// Used to indicate if there is a known leader node
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KnownLeader bool
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}
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// WriteMeta allows a write response to include potentially
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// useful metadata about the write
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||
type WriteMeta struct {
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// This is the index associated with the write
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Index uint64
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||
}
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// NodeRegisterRequest is used for Node.Register endpoint
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||
// to register a node as being a schedulable entity.
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||
type NodeRegisterRequest struct {
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||
Node *Node
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||
NodeEvent *NodeEvent
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||
WriteRequest
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||
}
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||
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// NodeDeregisterRequest is used for Node.Deregister endpoint
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// to deregister a node as being a schedulable entity.
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||
type NodeDeregisterRequest struct {
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NodeID string
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WriteRequest
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}
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||
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// NodeServerInfo is used to in NodeUpdateResponse to return Nomad server
|
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// information used in RPC server lists.
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||
type NodeServerInfo struct {
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||
// RPCAdvertiseAddr is the IP endpoint that a Nomad Server wishes to
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||
// be contacted at for RPCs.
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RPCAdvertiseAddr string
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||
|
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// RpcMajorVersion is the major version number the Nomad Server
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||
// supports
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RPCMajorVersion int32
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||
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||
// RpcMinorVersion is the minor version number the Nomad Server
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||
// supports
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||
RPCMinorVersion int32
|
||
|
||
// Datacenter is the datacenter that a Nomad server belongs to
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||
Datacenter string
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||
}
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||
|
||
// NodeUpdateStatusRequest is used for Node.UpdateStatus endpoint
|
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// to update the status of a node.
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||
type NodeUpdateStatusRequest struct {
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||
NodeID string
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||
Status string
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NodeEvent *NodeEvent
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||
WriteRequest
|
||
}
|
||
|
||
// NodeUpdateDrainRequest is used for updating the drain strategy
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||
type NodeUpdateDrainRequest struct {
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||
NodeID string
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||
DrainStrategy *DrainStrategy
|
||
|
||
// COMPAT Remove in version 0.10
|
||
// As part of Nomad 0.8 we have deprecated the drain boolean in favor of a
|
||
// drain strategy but we need to handle the upgrade path where the Raft log
|
||
// contains drain updates with just the drain boolean being manipulated.
|
||
Drain bool
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||
|
||
// MarkEligible marks the node as eligible if removing the drain strategy.
|
||
MarkEligible bool
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||
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||
// NodeEvent is the event added to the node
|
||
NodeEvent *NodeEvent
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||
|
||
WriteRequest
|
||
}
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||
|
||
// BatchNodeUpdateDrainRequest is used for updating the drain strategy for a
|
||
// batch of nodes
|
||
type BatchNodeUpdateDrainRequest struct {
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||
// Updates is a mapping of nodes to their updated drain strategy
|
||
Updates map[string]*DrainUpdate
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||
|
||
// NodeEvents is a mapping of the node to the event to add to the node
|
||
NodeEvents map[string]*NodeEvent
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||
|
||
WriteRequest
|
||
}
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||
|
||
// DrainUpdate is used to update the drain of a node
|
||
type DrainUpdate struct {
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||
// DrainStrategy is the new strategy for the node
|
||
DrainStrategy *DrainStrategy
|
||
|
||
// MarkEligible marks the node as eligible if removing the drain strategy.
|
||
MarkEligible bool
|
||
}
|
||
|
||
// NodeUpdateEligibilityRequest is used for updating the scheduling eligibility
|
||
type NodeUpdateEligibilityRequest struct {
|
||
NodeID string
|
||
Eligibility string
|
||
|
||
// NodeEvent is the event added to the node
|
||
NodeEvent *NodeEvent
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// NodeEvaluateRequest is used to re-evaluate the node
|
||
type NodeEvaluateRequest struct {
|
||
NodeID string
|
||
WriteRequest
|
||
}
|
||
|
||
// NodeSpecificRequest is used when we just need to specify a target node
|
||
type NodeSpecificRequest struct {
|
||
NodeID string
|
||
SecretID string
|
||
QueryOptions
|
||
}
|
||
|
||
// SearchResponse is used to return matches and information about whether
|
||
// the match list is truncated specific to each type of context.
|
||
type SearchResponse struct {
|
||
// Map of context types to ids which match a specified prefix
|
||
Matches map[Context][]string
|
||
|
||
// Truncations indicates whether the matches for a particular context have
|
||
// been truncated
|
||
Truncations map[Context]bool
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// SearchRequest is used to parameterize a request, and returns a
|
||
// list of matches made up of jobs, allocations, evaluations, and/or nodes,
|
||
// along with whether or not the information returned is truncated.
|
||
type SearchRequest struct {
|
||
// Prefix is what ids are matched to. I.e, if the given prefix were
|
||
// "a", potential matches might be "abcd" or "aabb"
|
||
Prefix string
|
||
|
||
// Context is the type that can be matched against. A context can be a job,
|
||
// node, evaluation, allocation, or empty (indicated every context should be
|
||
// matched)
|
||
Context Context
|
||
|
||
QueryOptions
|
||
}
|
||
|
||
// JobRegisterRequest is used for Job.Register endpoint
|
||
// to register a job as being a schedulable entity.
|
||
type JobRegisterRequest struct {
|
||
Job *Job
|
||
|
||
// If EnforceIndex is set then the job will only be registered if the passed
|
||
// JobModifyIndex matches the current Jobs index. If the index is zero, the
|
||
// register only occurs if the job is new.
|
||
EnforceIndex bool
|
||
JobModifyIndex uint64
|
||
|
||
// PolicyOverride is set when the user is attempting to override any policies
|
||
PolicyOverride bool
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// JobDeregisterRequest is used for Job.Deregister endpoint
|
||
// to deregister a job as being a schedulable entity.
|
||
type JobDeregisterRequest struct {
|
||
JobID string
|
||
|
||
// Purge controls whether the deregister purges the job from the system or
|
||
// whether the job is just marked as stopped and will be removed by the
|
||
// garbage collector
|
||
Purge bool
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// JobBatchDeregisterRequest is used to batch deregister jobs and upsert
|
||
// evaluations.
|
||
type JobBatchDeregisterRequest struct {
|
||
// Jobs is the set of jobs to deregister
|
||
Jobs map[NamespacedID]*JobDeregisterOptions
|
||
|
||
// Evals is the set of evaluations to create.
|
||
Evals []*Evaluation
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// JobDeregisterOptions configures how a job is deregistered.
|
||
type JobDeregisterOptions struct {
|
||
// Purge controls whether the deregister purges the job from the system or
|
||
// whether the job is just marked as stopped and will be removed by the
|
||
// garbage collector
|
||
Purge bool
|
||
}
|
||
|
||
// JobEvaluateRequest is used when we just need to re-evaluate a target job
|
||
type JobEvaluateRequest struct {
|
||
JobID string
|
||
EvalOptions EvalOptions
|
||
WriteRequest
|
||
}
|
||
|
||
// EvalOptions is used to encapsulate options when forcing a job evaluation
|
||
type EvalOptions struct {
|
||
ForceReschedule bool
|
||
}
|
||
|
||
// JobSpecificRequest is used when we just need to specify a target job
|
||
type JobSpecificRequest struct {
|
||
JobID string
|
||
AllAllocs bool
|
||
QueryOptions
|
||
}
|
||
|
||
// JobListRequest is used to parameterize a list request
|
||
type JobListRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// JobPlanRequest is used for the Job.Plan endpoint to trigger a dry-run
|
||
// evaluation of the Job.
|
||
type JobPlanRequest struct {
|
||
Job *Job
|
||
Diff bool // Toggles an annotated diff
|
||
// PolicyOverride is set when the user is attempting to override any policies
|
||
PolicyOverride bool
|
||
WriteRequest
|
||
}
|
||
|
||
// JobSummaryRequest is used when we just need to get a specific job summary
|
||
type JobSummaryRequest struct {
|
||
JobID string
|
||
QueryOptions
|
||
}
|
||
|
||
// JobDispatchRequest is used to dispatch a job based on a parameterized job
|
||
type JobDispatchRequest struct {
|
||
JobID string
|
||
Payload []byte
|
||
Meta map[string]string
|
||
WriteRequest
|
||
}
|
||
|
||
// JobValidateRequest is used to validate a job
|
||
type JobValidateRequest struct {
|
||
Job *Job
|
||
WriteRequest
|
||
}
|
||
|
||
// JobRevertRequest is used to revert a job to a prior version.
|
||
type JobRevertRequest struct {
|
||
// JobID is the ID of the job being reverted
|
||
JobID string
|
||
|
||
// JobVersion the version to revert to.
|
||
JobVersion uint64
|
||
|
||
// EnforcePriorVersion if set will enforce that the job is at the given
|
||
// version before reverting.
|
||
EnforcePriorVersion *uint64
|
||
|
||
// VaultToken is the Vault token that proves the submitter of the job revert
|
||
// has access to any Vault policies specified in the targeted job version. This
|
||
// field is only used to transfer the token and is not stored after the Job
|
||
// revert.
|
||
VaultToken string
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// JobStabilityRequest is used to marked a job as stable.
|
||
type JobStabilityRequest struct {
|
||
// Job to set the stability on
|
||
JobID string
|
||
JobVersion uint64
|
||
|
||
// Set the stability
|
||
Stable bool
|
||
WriteRequest
|
||
}
|
||
|
||
// JobStabilityResponse is the response when marking a job as stable.
|
||
type JobStabilityResponse struct {
|
||
WriteMeta
|
||
}
|
||
|
||
// NodeListRequest is used to parameterize a list request
|
||
type NodeListRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// EvalUpdateRequest is used for upserting evaluations.
|
||
type EvalUpdateRequest struct {
|
||
Evals []*Evaluation
|
||
EvalToken string
|
||
WriteRequest
|
||
}
|
||
|
||
// EvalDeleteRequest is used for deleting an evaluation.
|
||
type EvalDeleteRequest struct {
|
||
Evals []string
|
||
Allocs []string
|
||
WriteRequest
|
||
}
|
||
|
||
// EvalSpecificRequest is used when we just need to specify a target evaluation
|
||
type EvalSpecificRequest struct {
|
||
EvalID string
|
||
QueryOptions
|
||
}
|
||
|
||
// EvalAckRequest is used to Ack/Nack a specific evaluation
|
||
type EvalAckRequest struct {
|
||
EvalID string
|
||
Token string
|
||
WriteRequest
|
||
}
|
||
|
||
// EvalDequeueRequest is used when we want to dequeue an evaluation
|
||
type EvalDequeueRequest struct {
|
||
Schedulers []string
|
||
Timeout time.Duration
|
||
SchedulerVersion uint16
|
||
WriteRequest
|
||
}
|
||
|
||
// EvalListRequest is used to list the evaluations
|
||
type EvalListRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// PlanRequest is used to submit an allocation plan to the leader
|
||
type PlanRequest struct {
|
||
Plan *Plan
|
||
WriteRequest
|
||
}
|
||
|
||
// ApplyPlanResultsRequest is used by the planner to apply a Raft transaction
|
||
// committing the result of a plan.
|
||
type ApplyPlanResultsRequest struct {
|
||
// AllocUpdateRequest holds the allocation updates to be made by the
|
||
// scheduler.
|
||
AllocUpdateRequest
|
||
|
||
// Deployment is the deployment created or updated as a result of a
|
||
// scheduling event.
|
||
Deployment *Deployment
|
||
|
||
// DeploymentUpdates is a set of status updates to apply to the given
|
||
// deployments. This allows the scheduler to cancel any unneeded deployment
|
||
// because the job is stopped or the update block is removed.
|
||
DeploymentUpdates []*DeploymentStatusUpdate
|
||
|
||
// EvalID is the eval ID of the plan being applied. The modify index of the
|
||
// evaluation is updated as part of applying the plan to ensure that subsequent
|
||
// scheduling events for the same job will wait for the index that last produced
|
||
// state changes. This is necessary for blocked evaluations since they can be
|
||
// processed many times, potentially making state updates, without the state of
|
||
// the evaluation itself being updated.
|
||
EvalID string
|
||
|
||
// COMPAT 0.11
|
||
// NodePreemptions is a slice of allocations from other lower priority jobs
|
||
// that are preempted. Preempted allocations are marked as evicted.
|
||
// Deprecated: Replaced with AllocsPreempted which contains only the diff
|
||
NodePreemptions []*Allocation
|
||
|
||
// AllocsPreempted is a slice of allocation diffs from other lower priority jobs
|
||
// that are preempted. Preempted allocations are marked as evicted.
|
||
AllocsPreempted []*AllocationDiff
|
||
|
||
// PreemptionEvals is a slice of follow up evals for jobs whose allocations
|
||
// have been preempted to place allocs in this plan
|
||
PreemptionEvals []*Evaluation
|
||
}
|
||
|
||
// AllocUpdateRequest is used to submit changes to allocations, either
|
||
// to cause evictions or to assign new allocations. Both can be done
|
||
// within a single transaction
|
||
type AllocUpdateRequest struct {
|
||
// COMPAT 0.11
|
||
// Alloc is the list of new allocations to assign
|
||
// Deprecated: Replaced with two separate slices, one containing stopped allocations
|
||
// and another containing updated allocations
|
||
Alloc []*Allocation
|
||
|
||
// Allocations to stop. Contains only the diff, not the entire allocation
|
||
AllocsStopped []*AllocationDiff
|
||
|
||
// New or updated allocations
|
||
AllocsUpdated []*Allocation
|
||
|
||
// Evals is the list of new evaluations to create
|
||
// Evals are valid only when used in the Raft RPC
|
||
Evals []*Evaluation
|
||
|
||
// Job is the shared parent job of the allocations.
|
||
// It is pulled out since it is common to reduce payload size.
|
||
Job *Job
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// AllocUpdateDesiredTransitionRequest is used to submit changes to allocations
|
||
// desired transition state.
|
||
type AllocUpdateDesiredTransitionRequest struct {
|
||
// Allocs is the mapping of allocation ids to their desired state
|
||
// transition
|
||
Allocs map[string]*DesiredTransition
|
||
|
||
// Evals is the set of evaluations to create
|
||
Evals []*Evaluation
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// AllocStopRequest is used to stop and reschedule a running Allocation.
|
||
type AllocStopRequest struct {
|
||
AllocID string
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// AllocStopResponse is the response to an `AllocStopRequest`
|
||
type AllocStopResponse struct {
|
||
// EvalID is the id of the follow up evalution for the rescheduled alloc.
|
||
EvalID string
|
||
|
||
WriteMeta
|
||
}
|
||
|
||
// AllocListRequest is used to request a list of allocations
|
||
type AllocListRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// AllocSpecificRequest is used to query a specific allocation
|
||
type AllocSpecificRequest struct {
|
||
AllocID string
|
||
QueryOptions
|
||
}
|
||
|
||
// AllocSignalRequest is used to signal a specific allocation
|
||
type AllocSignalRequest struct {
|
||
AllocID string
|
||
Task string
|
||
Signal string
|
||
QueryOptions
|
||
}
|
||
|
||
// AllocsGetRequest is used to query a set of allocations
|
||
type AllocsGetRequest struct {
|
||
AllocIDs []string
|
||
QueryOptions
|
||
}
|
||
|
||
// AllocRestartRequest is used to restart a specific allocations tasks.
|
||
type AllocRestartRequest struct {
|
||
AllocID string
|
||
TaskName string
|
||
|
||
QueryOptions
|
||
}
|
||
|
||
// PeriodicForceRequest is used to force a specific periodic job.
|
||
type PeriodicForceRequest struct {
|
||
JobID string
|
||
WriteRequest
|
||
}
|
||
|
||
// ServerMembersResponse has the list of servers in a cluster
|
||
type ServerMembersResponse struct {
|
||
ServerName string
|
||
ServerRegion string
|
||
ServerDC string
|
||
Members []*ServerMember
|
||
}
|
||
|
||
// ServerMember holds information about a Nomad server agent in a cluster
|
||
type ServerMember struct {
|
||
Name string
|
||
Addr net.IP
|
||
Port uint16
|
||
Tags map[string]string
|
||
Status string
|
||
ProtocolMin uint8
|
||
ProtocolMax uint8
|
||
ProtocolCur uint8
|
||
DelegateMin uint8
|
||
DelegateMax uint8
|
||
DelegateCur uint8
|
||
}
|
||
|
||
// DeriveVaultTokenRequest is used to request wrapped Vault tokens for the
|
||
// following tasks in the given allocation
|
||
type DeriveVaultTokenRequest struct {
|
||
NodeID string
|
||
SecretID string
|
||
AllocID string
|
||
Tasks []string
|
||
QueryOptions
|
||
}
|
||
|
||
// VaultAccessorsRequest is used to operate on a set of Vault accessors
|
||
type VaultAccessorsRequest struct {
|
||
Accessors []*VaultAccessor
|
||
}
|
||
|
||
// VaultAccessor is a reference to a created Vault token on behalf of
|
||
// an allocation's task.
|
||
type VaultAccessor struct {
|
||
AllocID string
|
||
Task string
|
||
NodeID string
|
||
Accessor string
|
||
CreationTTL int
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
}
|
||
|
||
// DeriveVaultTokenResponse returns the wrapped tokens for each requested task
|
||
type DeriveVaultTokenResponse struct {
|
||
// Tasks is a mapping between the task name and the wrapped token
|
||
Tasks map[string]string
|
||
|
||
// Error stores any error that occurred. Errors are stored here so we can
|
||
// communicate whether it is retriable
|
||
Error *RecoverableError
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// GenericRequest is used to request where no
|
||
// specific information is needed.
|
||
type GenericRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// DeploymentListRequest is used to list the deployments
|
||
type DeploymentListRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// DeploymentDeleteRequest is used for deleting deployments.
|
||
type DeploymentDeleteRequest struct {
|
||
Deployments []string
|
||
WriteRequest
|
||
}
|
||
|
||
// DeploymentStatusUpdateRequest is used to update the status of a deployment as
|
||
// well as optionally creating an evaluation atomically.
|
||
type DeploymentStatusUpdateRequest struct {
|
||
// Eval, if set, is used to create an evaluation at the same time as
|
||
// updating the status of a deployment.
|
||
Eval *Evaluation
|
||
|
||
// DeploymentUpdate is a status update to apply to the given
|
||
// deployment.
|
||
DeploymentUpdate *DeploymentStatusUpdate
|
||
|
||
// Job is used to optionally upsert a job. This is used when setting the
|
||
// allocation health results in a deployment failure and the deployment
|
||
// auto-reverts to the latest stable job.
|
||
Job *Job
|
||
}
|
||
|
||
// DeploymentAllocHealthRequest is used to set the health of a set of
|
||
// allocations as part of a deployment.
|
||
type DeploymentAllocHealthRequest struct {
|
||
DeploymentID string
|
||
|
||
// Marks these allocations as healthy, allow further allocations
|
||
// to be rolled.
|
||
HealthyAllocationIDs []string
|
||
|
||
// Any unhealthy allocations fail the deployment
|
||
UnhealthyAllocationIDs []string
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// ApplyDeploymentAllocHealthRequest is used to apply an alloc health request via Raft
|
||
type ApplyDeploymentAllocHealthRequest struct {
|
||
DeploymentAllocHealthRequest
|
||
|
||
// Timestamp is the timestamp to use when setting the allocations health.
|
||
Timestamp time.Time
|
||
|
||
// An optional field to update the status of a deployment
|
||
DeploymentUpdate *DeploymentStatusUpdate
|
||
|
||
// Job is used to optionally upsert a job. This is used when setting the
|
||
// allocation health results in a deployment failure and the deployment
|
||
// auto-reverts to the latest stable job.
|
||
Job *Job
|
||
|
||
// An optional evaluation to create after promoting the canaries
|
||
Eval *Evaluation
|
||
}
|
||
|
||
// DeploymentPromoteRequest is used to promote task groups in a deployment
|
||
type DeploymentPromoteRequest struct {
|
||
DeploymentID string
|
||
|
||
// All is to promote all task groups
|
||
All bool
|
||
|
||
// Groups is used to set the promotion status per task group
|
||
Groups []string
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// ApplyDeploymentPromoteRequest is used to apply a promotion request via Raft
|
||
type ApplyDeploymentPromoteRequest struct {
|
||
DeploymentPromoteRequest
|
||
|
||
// An optional evaluation to create after promoting the canaries
|
||
Eval *Evaluation
|
||
}
|
||
|
||
// DeploymentPauseRequest is used to pause a deployment
|
||
type DeploymentPauseRequest struct {
|
||
DeploymentID string
|
||
|
||
// Pause sets the pause status
|
||
Pause bool
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// DeploymentSpecificRequest is used to make a request specific to a particular
|
||
// deployment
|
||
type DeploymentSpecificRequest struct {
|
||
DeploymentID string
|
||
QueryOptions
|
||
}
|
||
|
||
// DeploymentFailRequest is used to fail a particular deployment
|
||
type DeploymentFailRequest struct {
|
||
DeploymentID string
|
||
WriteRequest
|
||
}
|
||
|
||
// SingleDeploymentResponse is used to respond with a single deployment
|
||
type SingleDeploymentResponse struct {
|
||
Deployment *Deployment
|
||
QueryMeta
|
||
}
|
||
|
||
// GenericResponse is used to respond to a request where no
|
||
// specific response information is needed.
|
||
type GenericResponse struct {
|
||
WriteMeta
|
||
}
|
||
|
||
// VersionResponse is used for the Status.Version response
|
||
type VersionResponse struct {
|
||
Build string
|
||
Versions map[string]int
|
||
QueryMeta
|
||
}
|
||
|
||
// JobRegisterResponse is used to respond to a job registration
|
||
type JobRegisterResponse struct {
|
||
EvalID string
|
||
EvalCreateIndex uint64
|
||
JobModifyIndex uint64
|
||
|
||
// Warnings contains any warnings about the given job. These may include
|
||
// deprecation warnings.
|
||
Warnings string
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// JobDeregisterResponse is used to respond to a job deregistration
|
||
type JobDeregisterResponse struct {
|
||
EvalID string
|
||
EvalCreateIndex uint64
|
||
JobModifyIndex uint64
|
||
QueryMeta
|
||
}
|
||
|
||
// JobBatchDeregisterResponse is used to respond to a batch job deregistration
|
||
type JobBatchDeregisterResponse struct {
|
||
// JobEvals maps the job to its created evaluation
|
||
JobEvals map[NamespacedID]string
|
||
QueryMeta
|
||
}
|
||
|
||
// JobValidateResponse is the response from validate request
|
||
type JobValidateResponse struct {
|
||
// DriverConfigValidated indicates whether the agent validated the driver
|
||
// config
|
||
DriverConfigValidated bool
|
||
|
||
// ValidationErrors is a list of validation errors
|
||
ValidationErrors []string
|
||
|
||
// Error is a string version of any error that may have occurred
|
||
Error string
|
||
|
||
// Warnings contains any warnings about the given job. These may include
|
||
// deprecation warnings.
|
||
Warnings string
|
||
}
|
||
|
||
// NodeUpdateResponse is used to respond to a node update
|
||
type NodeUpdateResponse struct {
|
||
HeartbeatTTL time.Duration
|
||
EvalIDs []string
|
||
EvalCreateIndex uint64
|
||
NodeModifyIndex uint64
|
||
|
||
// LeaderRPCAddr is the RPC address of the current Raft Leader. If
|
||
// empty, the current Nomad Server is in the minority of a partition.
|
||
LeaderRPCAddr string
|
||
|
||
// NumNodes is the number of Nomad nodes attached to this quorum of
|
||
// Nomad Servers at the time of the response. This value can
|
||
// fluctuate based on the health of the cluster between heartbeats.
|
||
NumNodes int32
|
||
|
||
// Servers is the full list of known Nomad servers in the local
|
||
// region.
|
||
Servers []*NodeServerInfo
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// NodeDrainUpdateResponse is used to respond to a node drain update
|
||
type NodeDrainUpdateResponse struct {
|
||
NodeModifyIndex uint64
|
||
EvalIDs []string
|
||
EvalCreateIndex uint64
|
||
WriteMeta
|
||
}
|
||
|
||
// NodeEligibilityUpdateResponse is used to respond to a node eligibility update
|
||
type NodeEligibilityUpdateResponse struct {
|
||
NodeModifyIndex uint64
|
||
EvalIDs []string
|
||
EvalCreateIndex uint64
|
||
WriteMeta
|
||
}
|
||
|
||
// NodeAllocsResponse is used to return allocs for a single node
|
||
type NodeAllocsResponse struct {
|
||
Allocs []*Allocation
|
||
QueryMeta
|
||
}
|
||
|
||
// NodeClientAllocsResponse is used to return allocs meta data for a single node
|
||
type NodeClientAllocsResponse struct {
|
||
Allocs map[string]uint64
|
||
|
||
// MigrateTokens are used when ACLs are enabled to allow cross node,
|
||
// authenticated access to sticky volumes
|
||
MigrateTokens map[string]string
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// SingleNodeResponse is used to return a single node
|
||
type SingleNodeResponse struct {
|
||
Node *Node
|
||
QueryMeta
|
||
}
|
||
|
||
// NodeListResponse is used for a list request
|
||
type NodeListResponse struct {
|
||
Nodes []*NodeListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// SingleJobResponse is used to return a single job
|
||
type SingleJobResponse struct {
|
||
Job *Job
|
||
QueryMeta
|
||
}
|
||
|
||
// JobSummaryResponse is used to return a single job summary
|
||
type JobSummaryResponse struct {
|
||
JobSummary *JobSummary
|
||
QueryMeta
|
||
}
|
||
|
||
type JobDispatchResponse struct {
|
||
DispatchedJobID string
|
||
EvalID string
|
||
EvalCreateIndex uint64
|
||
JobCreateIndex uint64
|
||
WriteMeta
|
||
}
|
||
|
||
// JobListResponse is used for a list request
|
||
type JobListResponse struct {
|
||
Jobs []*JobListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// JobVersionsRequest is used to get a jobs versions
|
||
type JobVersionsRequest struct {
|
||
JobID string
|
||
Diffs bool
|
||
QueryOptions
|
||
}
|
||
|
||
// JobVersionsResponse is used for a job get versions request
|
||
type JobVersionsResponse struct {
|
||
Versions []*Job
|
||
Diffs []*JobDiff
|
||
QueryMeta
|
||
}
|
||
|
||
// JobPlanResponse is used to respond to a job plan request
|
||
type JobPlanResponse struct {
|
||
// Annotations stores annotations explaining decisions the scheduler made.
|
||
Annotations *PlanAnnotations
|
||
|
||
// FailedTGAllocs is the placement failures per task group.
|
||
FailedTGAllocs map[string]*AllocMetric
|
||
|
||
// JobModifyIndex is the modification index of the job. The value can be
|
||
// used when running `nomad run` to ensure that the Job wasn’t modified
|
||
// since the last plan. If the job is being created, the value is zero.
|
||
JobModifyIndex uint64
|
||
|
||
// CreatedEvals is the set of evaluations created by the scheduler. The
|
||
// reasons for this can be rolling-updates or blocked evals.
|
||
CreatedEvals []*Evaluation
|
||
|
||
// Diff contains the diff of the job and annotations on whether the change
|
||
// causes an in-place update or create/destroy
|
||
Diff *JobDiff
|
||
|
||
// NextPeriodicLaunch is the time duration till the job would be launched if
|
||
// submitted.
|
||
NextPeriodicLaunch time.Time
|
||
|
||
// Warnings contains any warnings about the given job. These may include
|
||
// deprecation warnings.
|
||
Warnings string
|
||
|
||
WriteMeta
|
||
}
|
||
|
||
// SingleAllocResponse is used to return a single allocation
|
||
type SingleAllocResponse struct {
|
||
Alloc *Allocation
|
||
QueryMeta
|
||
}
|
||
|
||
// AllocsGetResponse is used to return a set of allocations
|
||
type AllocsGetResponse struct {
|
||
Allocs []*Allocation
|
||
QueryMeta
|
||
}
|
||
|
||
// JobAllocationsResponse is used to return the allocations for a job
|
||
type JobAllocationsResponse struct {
|
||
Allocations []*AllocListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// JobEvaluationsResponse is used to return the evaluations for a job
|
||
type JobEvaluationsResponse struct {
|
||
Evaluations []*Evaluation
|
||
QueryMeta
|
||
}
|
||
|
||
// SingleEvalResponse is used to return a single evaluation
|
||
type SingleEvalResponse struct {
|
||
Eval *Evaluation
|
||
QueryMeta
|
||
}
|
||
|
||
// EvalDequeueResponse is used to return from a dequeue
|
||
type EvalDequeueResponse struct {
|
||
Eval *Evaluation
|
||
Token string
|
||
|
||
// WaitIndex is the Raft index the worker should wait until invoking the
|
||
// scheduler.
|
||
WaitIndex uint64
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// GetWaitIndex is used to retrieve the Raft index in which state should be at
|
||
// or beyond before invoking the scheduler.
|
||
func (e *EvalDequeueResponse) GetWaitIndex() uint64 {
|
||
// Prefer the wait index sent. This will be populated on all responses from
|
||
// 0.7.0 and above
|
||
if e.WaitIndex != 0 {
|
||
return e.WaitIndex
|
||
} else if e.Eval != nil {
|
||
return e.Eval.ModifyIndex
|
||
}
|
||
|
||
// This should never happen
|
||
return 1
|
||
}
|
||
|
||
// PlanResponse is used to return from a PlanRequest
|
||
type PlanResponse struct {
|
||
Result *PlanResult
|
||
WriteMeta
|
||
}
|
||
|
||
// AllocListResponse is used for a list request
|
||
type AllocListResponse struct {
|
||
Allocations []*AllocListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// DeploymentListResponse is used for a list request
|
||
type DeploymentListResponse struct {
|
||
Deployments []*Deployment
|
||
QueryMeta
|
||
}
|
||
|
||
// EvalListResponse is used for a list request
|
||
type EvalListResponse struct {
|
||
Evaluations []*Evaluation
|
||
QueryMeta
|
||
}
|
||
|
||
// EvalAllocationsResponse is used to return the allocations for an evaluation
|
||
type EvalAllocationsResponse struct {
|
||
Allocations []*AllocListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// PeriodicForceResponse is used to respond to a periodic job force launch
|
||
type PeriodicForceResponse struct {
|
||
EvalID string
|
||
EvalCreateIndex uint64
|
||
WriteMeta
|
||
}
|
||
|
||
// DeploymentUpdateResponse is used to respond to a deployment change. The
|
||
// response will include the modify index of the deployment as well as details
|
||
// of any triggered evaluation.
|
||
type DeploymentUpdateResponse struct {
|
||
EvalID string
|
||
EvalCreateIndex uint64
|
||
DeploymentModifyIndex uint64
|
||
|
||
// RevertedJobVersion is the version the job was reverted to. If unset, the
|
||
// job wasn't reverted
|
||
RevertedJobVersion *uint64
|
||
|
||
WriteMeta
|
||
}
|
||
|
||
// NodeConnQueryResponse is used to respond to a query of whether a server has
|
||
// a connection to a specific Node
|
||
type NodeConnQueryResponse struct {
|
||
// Connected indicates whether a connection to the Client exists
|
||
Connected bool
|
||
|
||
// Established marks the time at which the connection was established
|
||
Established time.Time
|
||
|
||
QueryMeta
|
||
}
|
||
|
||
// EmitNodeEventsRequest is a request to update the node events source
|
||
// with a new client-side event
|
||
type EmitNodeEventsRequest struct {
|
||
// NodeEvents are a map where the key is a node id, and value is a list of
|
||
// events for that node
|
||
NodeEvents map[string][]*NodeEvent
|
||
|
||
WriteRequest
|
||
}
|
||
|
||
// EmitNodeEventsResponse is a response to the client about the status of
|
||
// the node event source update.
|
||
type EmitNodeEventsResponse struct {
|
||
Index uint64
|
||
WriteMeta
|
||
}
|
||
|
||
const (
|
||
NodeEventSubsystemDrain = "Drain"
|
||
NodeEventSubsystemDriver = "Driver"
|
||
NodeEventSubsystemHeartbeat = "Heartbeat"
|
||
NodeEventSubsystemCluster = "Cluster"
|
||
)
|
||
|
||
// NodeEvent is a single unit representing a node’s state change
|
||
type NodeEvent struct {
|
||
Message string
|
||
Subsystem string
|
||
Details map[string]string
|
||
Timestamp time.Time
|
||
CreateIndex uint64
|
||
}
|
||
|
||
func (ne *NodeEvent) String() string {
|
||
var details []string
|
||
for k, v := range ne.Details {
|
||
details = append(details, fmt.Sprintf("%s: %s", k, v))
|
||
}
|
||
|
||
return fmt.Sprintf("Message: %s, Subsystem: %s, Details: %s, Timestamp: %s", ne.Message, ne.Subsystem, strings.Join(details, ","), ne.Timestamp.String())
|
||
}
|
||
|
||
func (ne *NodeEvent) Copy() *NodeEvent {
|
||
c := new(NodeEvent)
|
||
*c = *ne
|
||
c.Details = helper.CopyMapStringString(ne.Details)
|
||
return c
|
||
}
|
||
|
||
// NewNodeEvent generates a new node event storing the current time as the
|
||
// timestamp
|
||
func NewNodeEvent() *NodeEvent {
|
||
return &NodeEvent{Timestamp: time.Now()}
|
||
}
|
||
|
||
// SetMessage is used to set the message on the node event
|
||
func (ne *NodeEvent) SetMessage(msg string) *NodeEvent {
|
||
ne.Message = msg
|
||
return ne
|
||
}
|
||
|
||
// SetSubsystem is used to set the subsystem on the node event
|
||
func (ne *NodeEvent) SetSubsystem(sys string) *NodeEvent {
|
||
ne.Subsystem = sys
|
||
return ne
|
||
}
|
||
|
||
// SetTimestamp is used to set the timestamp on the node event
|
||
func (ne *NodeEvent) SetTimestamp(ts time.Time) *NodeEvent {
|
||
ne.Timestamp = ts
|
||
return ne
|
||
}
|
||
|
||
// AddDetail is used to add a detail to the node event
|
||
func (ne *NodeEvent) AddDetail(k, v string) *NodeEvent {
|
||
if ne.Details == nil {
|
||
ne.Details = make(map[string]string, 1)
|
||
}
|
||
ne.Details[k] = v
|
||
return ne
|
||
}
|
||
|
||
const (
|
||
NodeStatusInit = "initializing"
|
||
NodeStatusReady = "ready"
|
||
NodeStatusDown = "down"
|
||
)
|
||
|
||
// ShouldDrainNode checks if a given node status should trigger an
|
||
// evaluation. Some states don't require any further action.
|
||
func ShouldDrainNode(status string) bool {
|
||
switch status {
|
||
case NodeStatusInit, NodeStatusReady:
|
||
return false
|
||
case NodeStatusDown:
|
||
return true
|
||
default:
|
||
panic(fmt.Sprintf("unhandled node status %s", status))
|
||
}
|
||
}
|
||
|
||
// ValidNodeStatus is used to check if a node status is valid
|
||
func ValidNodeStatus(status string) bool {
|
||
switch status {
|
||
case NodeStatusInit, NodeStatusReady, NodeStatusDown:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
const (
|
||
// NodeSchedulingEligible and Ineligible marks the node as eligible or not,
|
||
// respectively, for receiving allocations. This is orthoginal to the node
|
||
// status being ready.
|
||
NodeSchedulingEligible = "eligible"
|
||
NodeSchedulingIneligible = "ineligible"
|
||
)
|
||
|
||
// DrainSpec describes a Node's desired drain behavior.
|
||
type DrainSpec struct {
|
||
// Deadline is the duration after StartTime when the remaining
|
||
// allocations on a draining Node should be told to stop.
|
||
Deadline time.Duration
|
||
|
||
// IgnoreSystemJobs allows systems jobs to remain on the node even though it
|
||
// has been marked for draining.
|
||
IgnoreSystemJobs bool
|
||
}
|
||
|
||
// DrainStrategy describes a Node's drain behavior.
|
||
type DrainStrategy struct {
|
||
// DrainSpec is the user declared drain specification
|
||
DrainSpec
|
||
|
||
// ForceDeadline is the deadline time for the drain after which drains will
|
||
// be forced
|
||
ForceDeadline time.Time
|
||
}
|
||
|
||
func (d *DrainStrategy) Copy() *DrainStrategy {
|
||
if d == nil {
|
||
return nil
|
||
}
|
||
|
||
nd := new(DrainStrategy)
|
||
*nd = *d
|
||
return nd
|
||
}
|
||
|
||
// DeadlineTime returns a boolean whether the drain strategy allows an infinite
|
||
// duration or otherwise the deadline time. The force drain is captured by the
|
||
// deadline time being in the past.
|
||
func (d *DrainStrategy) DeadlineTime() (infinite bool, deadline time.Time) {
|
||
// Treat the nil case as a force drain so during an upgrade where a node may
|
||
// not have a drain strategy but has Drain set to true, it is treated as a
|
||
// force to mimick old behavior.
|
||
if d == nil {
|
||
return false, time.Time{}
|
||
}
|
||
|
||
ns := d.Deadline.Nanoseconds()
|
||
switch {
|
||
case ns < 0: // Force
|
||
return false, time.Time{}
|
||
case ns == 0: // Infinite
|
||
return true, time.Time{}
|
||
default:
|
||
return false, d.ForceDeadline
|
||
}
|
||
}
|
||
|
||
func (d *DrainStrategy) Equal(o *DrainStrategy) bool {
|
||
if d == nil && o == nil {
|
||
return true
|
||
} else if o != nil && d == nil {
|
||
return false
|
||
} else if d != nil && o == nil {
|
||
return false
|
||
}
|
||
|
||
// Compare values
|
||
if d.ForceDeadline != o.ForceDeadline {
|
||
return false
|
||
} else if d.Deadline != o.Deadline {
|
||
return false
|
||
} else if d.IgnoreSystemJobs != o.IgnoreSystemJobs {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// Node is a representation of a schedulable client node
|
||
type Node struct {
|
||
// ID is a unique identifier for the node. It can be constructed
|
||
// by doing a concatenation of the Name and Datacenter as a simple
|
||
// approach. Alternatively a UUID may be used.
|
||
ID string
|
||
|
||
// SecretID is an ID that is only known by the Node and the set of Servers.
|
||
// It is not accessible via the API and is used to authenticate nodes
|
||
// conducting privileged activities.
|
||
SecretID string
|
||
|
||
// Datacenter for this node
|
||
Datacenter string
|
||
|
||
// Node name
|
||
Name string
|
||
|
||
// HTTPAddr is the address on which the Nomad client is listening for http
|
||
// requests
|
||
HTTPAddr string
|
||
|
||
// TLSEnabled indicates if the Agent has TLS enabled for the HTTP API
|
||
TLSEnabled bool
|
||
|
||
// Attributes is an arbitrary set of key/value
|
||
// data that can be used for constraints. Examples
|
||
// include "kernel.name=linux", "arch=386", "driver.docker=1",
|
||
// "docker.runtime=1.8.3"
|
||
Attributes map[string]string
|
||
|
||
// NodeResources captures the available resources on the client.
|
||
NodeResources *NodeResources
|
||
|
||
// ReservedResources captures the set resources on the client that are
|
||
// reserved from scheduling.
|
||
ReservedResources *NodeReservedResources
|
||
|
||
// Resources is the available resources on the client.
|
||
// For example 'cpu=2' 'memory=2048'
|
||
// COMPAT(0.10): Remove in 0.10
|
||
Resources *Resources
|
||
|
||
// Reserved is the set of resources that are reserved,
|
||
// and should be subtracted from the total resources for
|
||
// the purposes of scheduling. This may be provide certain
|
||
// high-watermark tolerances or because of external schedulers
|
||
// consuming resources.
|
||
Reserved *Resources
|
||
|
||
// Links are used to 'link' this client to external
|
||
// systems. For example 'consul=foo.dc1' 'aws=i-83212'
|
||
// 'ami=ami-123'
|
||
Links map[string]string
|
||
|
||
// Meta is used to associate arbitrary metadata with this
|
||
// client. This is opaque to Nomad.
|
||
Meta map[string]string
|
||
|
||
// NodeClass is an opaque identifier used to group nodes
|
||
// together for the purpose of determining scheduling pressure.
|
||
NodeClass string
|
||
|
||
// ComputedClass is a unique id that identifies nodes with a common set of
|
||
// attributes and capabilities.
|
||
ComputedClass string
|
||
|
||
// COMPAT: Remove in Nomad 0.9
|
||
// Drain is controlled by the servers, and not the client.
|
||
// If true, no jobs will be scheduled to this node, and existing
|
||
// allocations will be drained. Superceded by DrainStrategy in Nomad
|
||
// 0.8 but kept for backward compat.
|
||
Drain bool
|
||
|
||
// DrainStrategy determines the node's draining behavior. Will be nil
|
||
// when Drain=false.
|
||
DrainStrategy *DrainStrategy
|
||
|
||
// SchedulingEligibility determines whether this node will receive new
|
||
// placements.
|
||
SchedulingEligibility string
|
||
|
||
// Status of this node
|
||
Status string
|
||
|
||
// StatusDescription is meant to provide more human useful information
|
||
StatusDescription string
|
||
|
||
// StatusUpdatedAt is the time stamp at which the state of the node was
|
||
// updated
|
||
StatusUpdatedAt int64
|
||
|
||
// Events is the most recent set of events generated for the node,
|
||
// retaining only MaxRetainedNodeEvents number at a time
|
||
Events []*NodeEvent
|
||
|
||
// Drivers is a map of driver names to current driver information
|
||
Drivers map[string]*DriverInfo
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// Ready returns true if the node is ready for running allocations
|
||
func (n *Node) Ready() bool {
|
||
// Drain is checked directly to support pre-0.8 Node data
|
||
return n.Status == NodeStatusReady && !n.Drain && n.SchedulingEligibility == NodeSchedulingEligible
|
||
}
|
||
|
||
func (n *Node) Canonicalize() {
|
||
if n == nil {
|
||
return
|
||
}
|
||
|
||
// COMPAT Remove in 0.10
|
||
// In v0.8.0 we introduced scheduling eligibility, so we need to set it for
|
||
// upgrading nodes
|
||
if n.SchedulingEligibility == "" {
|
||
if n.Drain {
|
||
n.SchedulingEligibility = NodeSchedulingIneligible
|
||
} else {
|
||
n.SchedulingEligibility = NodeSchedulingEligible
|
||
}
|
||
}
|
||
}
|
||
|
||
func (n *Node) Copy() *Node {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
nn := new(Node)
|
||
*nn = *n
|
||
nn.Attributes = helper.CopyMapStringString(nn.Attributes)
|
||
nn.Resources = nn.Resources.Copy()
|
||
nn.Reserved = nn.Reserved.Copy()
|
||
nn.NodeResources = nn.NodeResources.Copy()
|
||
nn.ReservedResources = nn.ReservedResources.Copy()
|
||
nn.Links = helper.CopyMapStringString(nn.Links)
|
||
nn.Meta = helper.CopyMapStringString(nn.Meta)
|
||
nn.Events = copyNodeEvents(n.Events)
|
||
nn.DrainStrategy = nn.DrainStrategy.Copy()
|
||
nn.Drivers = copyNodeDrivers(n.Drivers)
|
||
return nn
|
||
}
|
||
|
||
// copyNodeEvents is a helper to copy a list of NodeEvent's
|
||
func copyNodeEvents(events []*NodeEvent) []*NodeEvent {
|
||
l := len(events)
|
||
if l == 0 {
|
||
return nil
|
||
}
|
||
|
||
c := make([]*NodeEvent, l)
|
||
for i, event := range events {
|
||
c[i] = event.Copy()
|
||
}
|
||
return c
|
||
}
|
||
|
||
// copyNodeDrivers is a helper to copy a map of DriverInfo
|
||
func copyNodeDrivers(drivers map[string]*DriverInfo) map[string]*DriverInfo {
|
||
l := len(drivers)
|
||
if l == 0 {
|
||
return nil
|
||
}
|
||
|
||
c := make(map[string]*DriverInfo, l)
|
||
for driver, info := range drivers {
|
||
c[driver] = info.Copy()
|
||
}
|
||
return c
|
||
}
|
||
|
||
// TerminalStatus returns if the current status is terminal and
|
||
// will no longer transition.
|
||
func (n *Node) TerminalStatus() bool {
|
||
switch n.Status {
|
||
case NodeStatusDown:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// COMPAT(0.11): Remove in 0.11
|
||
// ComparableReservedResources returns the reserved resouces on the node
|
||
// handling upgrade paths. Reserved networks must be handled separately. After
|
||
// 0.11 calls to this should be replaced with:
|
||
// node.ReservedResources.Comparable()
|
||
func (n *Node) ComparableReservedResources() *ComparableResources {
|
||
// See if we can no-op
|
||
if n.Reserved == nil && n.ReservedResources == nil {
|
||
return nil
|
||
}
|
||
|
||
// Node already has 0.9+ behavior
|
||
if n.ReservedResources != nil {
|
||
return n.ReservedResources.Comparable()
|
||
}
|
||
|
||
// Upgrade path
|
||
return &ComparableResources{
|
||
Flattened: AllocatedTaskResources{
|
||
Cpu: AllocatedCpuResources{
|
||
CpuShares: int64(n.Reserved.CPU),
|
||
},
|
||
Memory: AllocatedMemoryResources{
|
||
MemoryMB: int64(n.Reserved.MemoryMB),
|
||
},
|
||
},
|
||
Shared: AllocatedSharedResources{
|
||
DiskMB: int64(n.Reserved.DiskMB),
|
||
},
|
||
}
|
||
}
|
||
|
||
// COMPAT(0.11): Remove in 0.11
|
||
// ComparableResources returns the resouces on the node
|
||
// handling upgrade paths. Networking must be handled separately. After 0.11
|
||
// calls to this should be replaced with: node.NodeResources.Comparable()
|
||
func (n *Node) ComparableResources() *ComparableResources {
|
||
// Node already has 0.9+ behavior
|
||
if n.NodeResources != nil {
|
||
return n.NodeResources.Comparable()
|
||
}
|
||
|
||
// Upgrade path
|
||
return &ComparableResources{
|
||
Flattened: AllocatedTaskResources{
|
||
Cpu: AllocatedCpuResources{
|
||
CpuShares: int64(n.Resources.CPU),
|
||
},
|
||
Memory: AllocatedMemoryResources{
|
||
MemoryMB: int64(n.Resources.MemoryMB),
|
||
},
|
||
},
|
||
Shared: AllocatedSharedResources{
|
||
DiskMB: int64(n.Resources.DiskMB),
|
||
},
|
||
}
|
||
}
|
||
|
||
// Stub returns a summarized version of the node
|
||
func (n *Node) Stub() *NodeListStub {
|
||
|
||
addr, _, _ := net.SplitHostPort(n.HTTPAddr)
|
||
|
||
return &NodeListStub{
|
||
Address: addr,
|
||
ID: n.ID,
|
||
Datacenter: n.Datacenter,
|
||
Name: n.Name,
|
||
NodeClass: n.NodeClass,
|
||
Version: n.Attributes["nomad.version"],
|
||
Drain: n.Drain,
|
||
SchedulingEligibility: n.SchedulingEligibility,
|
||
Status: n.Status,
|
||
StatusDescription: n.StatusDescription,
|
||
Drivers: n.Drivers,
|
||
CreateIndex: n.CreateIndex,
|
||
ModifyIndex: n.ModifyIndex,
|
||
}
|
||
}
|
||
|
||
// NodeListStub is used to return a subset of job information
|
||
// for the job list
|
||
type NodeListStub struct {
|
||
Address string
|
||
ID string
|
||
Datacenter string
|
||
Name string
|
||
NodeClass string
|
||
Version string
|
||
Drain bool
|
||
SchedulingEligibility string
|
||
Status string
|
||
StatusDescription string
|
||
Drivers map[string]*DriverInfo
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// Resources is used to define the resources available
|
||
// on a client
|
||
type Resources struct {
|
||
CPU int
|
||
MemoryMB int
|
||
DiskMB int
|
||
IOPS int // COMPAT(0.10): Only being used to issue warnings
|
||
Networks Networks
|
||
Devices ResourceDevices
|
||
}
|
||
|
||
const (
|
||
BytesInMegabyte = 1024 * 1024
|
||
)
|
||
|
||
// DefaultResources is a small resources object that contains the
|
||
// default resources requests that we will provide to an object.
|
||
// --- THIS FUNCTION IS REPLICATED IN api/resources.go and should
|
||
// be kept in sync.
|
||
func DefaultResources() *Resources {
|
||
return &Resources{
|
||
CPU: 100,
|
||
MemoryMB: 300,
|
||
}
|
||
}
|
||
|
||
// MinResources is a small resources object that contains the
|
||
// absolute minimum resources that we will provide to an object.
|
||
// This should not be confused with the defaults which are
|
||
// provided in Canonicalize() --- THIS FUNCTION IS REPLICATED IN
|
||
// api/resources.go and should be kept in sync.
|
||
func MinResources() *Resources {
|
||
return &Resources{
|
||
CPU: 20,
|
||
MemoryMB: 10,
|
||
}
|
||
}
|
||
|
||
// DiskInBytes returns the amount of disk resources in bytes.
|
||
func (r *Resources) DiskInBytes() int64 {
|
||
return int64(r.DiskMB * BytesInMegabyte)
|
||
}
|
||
|
||
func (r *Resources) Validate() error {
|
||
var mErr multierror.Error
|
||
if err := r.MeetsMinResources(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
|
||
// Ensure the task isn't asking for disk resources
|
||
if r.DiskMB > 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Task can't ask for disk resources, they have to be specified at the task group level."))
|
||
}
|
||
|
||
for i, d := range r.Devices {
|
||
if err := d.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("device %d failed validation: %v", i+1, err))
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Merge merges this resource with another resource.
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) Merge(other *Resources) {
|
||
if other.CPU != 0 {
|
||
r.CPU = other.CPU
|
||
}
|
||
if other.MemoryMB != 0 {
|
||
r.MemoryMB = other.MemoryMB
|
||
}
|
||
if other.DiskMB != 0 {
|
||
r.DiskMB = other.DiskMB
|
||
}
|
||
if len(other.Networks) != 0 {
|
||
r.Networks = other.Networks
|
||
}
|
||
if len(other.Devices) != 0 {
|
||
r.Devices = other.Devices
|
||
}
|
||
}
|
||
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) Equals(o *Resources) bool {
|
||
if r == o {
|
||
return true
|
||
}
|
||
if r == nil || o == nil {
|
||
return false
|
||
}
|
||
return r.CPU == o.CPU &&
|
||
r.MemoryMB == o.MemoryMB &&
|
||
r.DiskMB == o.DiskMB &&
|
||
r.IOPS == o.IOPS &&
|
||
r.Networks.Equals(&o.Networks) &&
|
||
r.Devices.Equals(&o.Devices)
|
||
}
|
||
|
||
// COMPAT(0.10): Remove in 0.10
|
||
// ResourceDevices are part of Resources
|
||
type ResourceDevices []*RequestedDevice
|
||
|
||
// COMPAT(0.10): Remove in 0.10
|
||
// Equals ResourceDevices as set keyed by Name
|
||
func (d *ResourceDevices) Equals(o *ResourceDevices) bool {
|
||
if d == o {
|
||
return true
|
||
}
|
||
if d == nil || o == nil {
|
||
return false
|
||
}
|
||
if len(*d) != len(*o) {
|
||
return false
|
||
}
|
||
m := make(map[string]*RequestedDevice, len(*d))
|
||
for _, e := range *d {
|
||
m[e.Name] = e
|
||
}
|
||
for _, oe := range *o {
|
||
de, ok := m[oe.Name]
|
||
if !ok || !de.Equals(oe) {
|
||
return false
|
||
}
|
||
}
|
||
return true
|
||
}
|
||
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) Canonicalize() {
|
||
// Ensure that an empty and nil slices are treated the same to avoid scheduling
|
||
// problems since we use reflect DeepEquals.
|
||
if len(r.Networks) == 0 {
|
||
r.Networks = nil
|
||
}
|
||
if len(r.Devices) == 0 {
|
||
r.Devices = nil
|
||
}
|
||
|
||
for _, n := range r.Networks {
|
||
n.Canonicalize()
|
||
}
|
||
}
|
||
|
||
// MeetsMinResources returns an error if the resources specified are less than
|
||
// the minimum allowed.
|
||
// This is based on the minimums defined in the Resources type
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) MeetsMinResources() error {
|
||
var mErr multierror.Error
|
||
minResources := MinResources()
|
||
if r.CPU < minResources.CPU {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("minimum CPU value is %d; got %d", minResources.CPU, r.CPU))
|
||
}
|
||
if r.MemoryMB < minResources.MemoryMB {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("minimum MemoryMB value is %d; got %d", minResources.MemoryMB, r.MemoryMB))
|
||
}
|
||
for i, n := range r.Networks {
|
||
if err := n.MeetsMinResources(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("network resource at index %d failed: %v", i, err))
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Copy returns a deep copy of the resources
|
||
func (r *Resources) Copy() *Resources {
|
||
if r == nil {
|
||
return nil
|
||
}
|
||
newR := new(Resources)
|
||
*newR = *r
|
||
|
||
// Copy the network objects
|
||
if r.Networks != nil {
|
||
n := len(r.Networks)
|
||
newR.Networks = make([]*NetworkResource, n)
|
||
for i := 0; i < n; i++ {
|
||
newR.Networks[i] = r.Networks[i].Copy()
|
||
}
|
||
}
|
||
|
||
// Copy the devices
|
||
if r.Devices != nil {
|
||
n := len(r.Devices)
|
||
newR.Devices = make([]*RequestedDevice, n)
|
||
for i := 0; i < n; i++ {
|
||
newR.Devices[i] = r.Devices[i].Copy()
|
||
}
|
||
}
|
||
|
||
return newR
|
||
}
|
||
|
||
// NetIndex finds the matching net index using device name
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) NetIndex(n *NetworkResource) int {
|
||
return r.Networks.NetIndex(n)
|
||
}
|
||
|
||
// Superset checks if one set of resources is a superset
|
||
// of another. This ignores network resources, and the NetworkIndex
|
||
// should be used for that.
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) Superset(other *Resources) (bool, string) {
|
||
if r.CPU < other.CPU {
|
||
return false, "cpu"
|
||
}
|
||
if r.MemoryMB < other.MemoryMB {
|
||
return false, "memory"
|
||
}
|
||
if r.DiskMB < other.DiskMB {
|
||
return false, "disk"
|
||
}
|
||
return true, ""
|
||
}
|
||
|
||
// Add adds the resources of the delta to this, potentially
|
||
// returning an error if not possible.
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) Add(delta *Resources) error {
|
||
if delta == nil {
|
||
return nil
|
||
}
|
||
r.CPU += delta.CPU
|
||
r.MemoryMB += delta.MemoryMB
|
||
r.DiskMB += delta.DiskMB
|
||
|
||
for _, n := range delta.Networks {
|
||
// Find the matching interface by IP or CIDR
|
||
idx := r.NetIndex(n)
|
||
if idx == -1 {
|
||
r.Networks = append(r.Networks, n.Copy())
|
||
} else {
|
||
r.Networks[idx].Add(n)
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// COMPAT(0.10): Remove in 0.10
|
||
func (r *Resources) GoString() string {
|
||
return fmt.Sprintf("*%#v", *r)
|
||
}
|
||
|
||
type Port struct {
|
||
Label string
|
||
Value int
|
||
}
|
||
|
||
// NetworkResource is used to represent available network
|
||
// resources
|
||
type NetworkResource struct {
|
||
Device string // Name of the device
|
||
CIDR string // CIDR block of addresses
|
||
IP string // Host IP address
|
||
MBits int // Throughput
|
||
ReservedPorts []Port // Host Reserved ports
|
||
DynamicPorts []Port // Host Dynamically assigned ports
|
||
}
|
||
|
||
func (nr *NetworkResource) Equals(other *NetworkResource) bool {
|
||
if nr.Device != other.Device {
|
||
return false
|
||
}
|
||
|
||
if nr.CIDR != other.CIDR {
|
||
return false
|
||
}
|
||
|
||
if nr.IP != other.IP {
|
||
return false
|
||
}
|
||
|
||
if nr.MBits != other.MBits {
|
||
return false
|
||
}
|
||
|
||
if len(nr.ReservedPorts) != len(other.ReservedPorts) {
|
||
return false
|
||
}
|
||
|
||
for i, port := range nr.ReservedPorts {
|
||
if len(other.ReservedPorts) <= i {
|
||
return false
|
||
}
|
||
if port != other.ReservedPorts[i] {
|
||
return false
|
||
}
|
||
}
|
||
|
||
if len(nr.DynamicPorts) != len(other.DynamicPorts) {
|
||
return false
|
||
}
|
||
for i, port := range nr.DynamicPorts {
|
||
if len(other.DynamicPorts) <= i {
|
||
return false
|
||
}
|
||
if port != other.DynamicPorts[i] {
|
||
return false
|
||
}
|
||
}
|
||
return true
|
||
}
|
||
|
||
func (n *NetworkResource) Canonicalize() {
|
||
// Ensure that an empty and nil slices are treated the same to avoid scheduling
|
||
// problems since we use reflect DeepEquals.
|
||
if len(n.ReservedPorts) == 0 {
|
||
n.ReservedPorts = nil
|
||
}
|
||
if len(n.DynamicPorts) == 0 {
|
||
n.DynamicPorts = nil
|
||
}
|
||
}
|
||
|
||
// MeetsMinResources returns an error if the resources specified are less than
|
||
// the minimum allowed.
|
||
func (n *NetworkResource) MeetsMinResources() error {
|
||
var mErr multierror.Error
|
||
if n.MBits < 1 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("minimum MBits value is 1; got %d", n.MBits))
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Copy returns a deep copy of the network resource
|
||
func (n *NetworkResource) Copy() *NetworkResource {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
newR := new(NetworkResource)
|
||
*newR = *n
|
||
if n.ReservedPorts != nil {
|
||
newR.ReservedPorts = make([]Port, len(n.ReservedPorts))
|
||
copy(newR.ReservedPorts, n.ReservedPorts)
|
||
}
|
||
if n.DynamicPorts != nil {
|
||
newR.DynamicPorts = make([]Port, len(n.DynamicPorts))
|
||
copy(newR.DynamicPorts, n.DynamicPorts)
|
||
}
|
||
return newR
|
||
}
|
||
|
||
// Add adds the resources of the delta to this, potentially
|
||
// returning an error if not possible.
|
||
func (n *NetworkResource) Add(delta *NetworkResource) {
|
||
if len(delta.ReservedPorts) > 0 {
|
||
n.ReservedPorts = append(n.ReservedPorts, delta.ReservedPorts...)
|
||
}
|
||
n.MBits += delta.MBits
|
||
n.DynamicPorts = append(n.DynamicPorts, delta.DynamicPorts...)
|
||
}
|
||
|
||
func (n *NetworkResource) GoString() string {
|
||
return fmt.Sprintf("*%#v", *n)
|
||
}
|
||
|
||
// PortLabels returns a map of port labels to their assigned host ports.
|
||
func (n *NetworkResource) PortLabels() map[string]int {
|
||
num := len(n.ReservedPorts) + len(n.DynamicPorts)
|
||
labelValues := make(map[string]int, num)
|
||
for _, port := range n.ReservedPorts {
|
||
labelValues[port.Label] = port.Value
|
||
}
|
||
for _, port := range n.DynamicPorts {
|
||
labelValues[port.Label] = port.Value
|
||
}
|
||
return labelValues
|
||
}
|
||
|
||
// Networks defined for a task on the Resources struct.
|
||
type Networks []*NetworkResource
|
||
|
||
// Port assignment and IP for the given label or empty values.
|
||
func (ns Networks) Port(label string) (string, int) {
|
||
for _, n := range ns {
|
||
for _, p := range n.ReservedPorts {
|
||
if p.Label == label {
|
||
return n.IP, p.Value
|
||
}
|
||
}
|
||
for _, p := range n.DynamicPorts {
|
||
if p.Label == label {
|
||
return n.IP, p.Value
|
||
}
|
||
}
|
||
}
|
||
return "", 0
|
||
}
|
||
|
||
func (ns Networks) NetIndex(n *NetworkResource) int {
|
||
for idx, net := range ns {
|
||
if net.Device == n.Device {
|
||
return idx
|
||
}
|
||
}
|
||
return -1
|
||
}
|
||
|
||
// RequestedDevice is used to request a device for a task.
|
||
type RequestedDevice struct {
|
||
// Name is the request name. The possible values are as follows:
|
||
// * <type>: A single value only specifies the type of request.
|
||
// * <vendor>/<type>: A single slash delimiter assumes the vendor and type of device is specified.
|
||
// * <vendor>/<type>/<name>: Two slash delimiters assume vendor, type and specific model are specified.
|
||
//
|
||
// Examples are as follows:
|
||
// * "gpu"
|
||
// * "nvidia/gpu"
|
||
// * "nvidia/gpu/GTX2080Ti"
|
||
Name string
|
||
|
||
// Count is the number of requested devices
|
||
Count uint64
|
||
|
||
// Constraints are a set of constraints to apply when selecting the device
|
||
// to use.
|
||
Constraints Constraints
|
||
|
||
// Affinities are a set of affinites to apply when selecting the device
|
||
// to use.
|
||
Affinities Affinities
|
||
}
|
||
|
||
func (r *RequestedDevice) Equals(o *RequestedDevice) bool {
|
||
if r == o {
|
||
return true
|
||
}
|
||
if r == nil || o == nil {
|
||
return false
|
||
}
|
||
return r.Name == o.Name &&
|
||
r.Count == o.Count &&
|
||
r.Constraints.Equals(&o.Constraints) &&
|
||
r.Affinities.Equals(&o.Affinities)
|
||
}
|
||
|
||
func (r *RequestedDevice) Copy() *RequestedDevice {
|
||
if r == nil {
|
||
return nil
|
||
}
|
||
|
||
nr := *r
|
||
nr.Constraints = CopySliceConstraints(nr.Constraints)
|
||
nr.Affinities = CopySliceAffinities(nr.Affinities)
|
||
|
||
return &nr
|
||
}
|
||
|
||
func (r *RequestedDevice) ID() *DeviceIdTuple {
|
||
if r == nil || r.Name == "" {
|
||
return nil
|
||
}
|
||
|
||
parts := strings.SplitN(r.Name, "/", 3)
|
||
switch len(parts) {
|
||
case 1:
|
||
return &DeviceIdTuple{
|
||
Type: parts[0],
|
||
}
|
||
case 2:
|
||
return &DeviceIdTuple{
|
||
Vendor: parts[0],
|
||
Type: parts[1],
|
||
}
|
||
default:
|
||
return &DeviceIdTuple{
|
||
Vendor: parts[0],
|
||
Type: parts[1],
|
||
Name: parts[2],
|
||
}
|
||
}
|
||
}
|
||
|
||
func (r *RequestedDevice) Validate() error {
|
||
if r == nil {
|
||
return nil
|
||
}
|
||
|
||
var mErr multierror.Error
|
||
if r.Name == "" {
|
||
multierror.Append(&mErr, errors.New("device name must be given as one of the following: type, vendor/type, or vendor/type/name"))
|
||
}
|
||
|
||
for idx, constr := range r.Constraints {
|
||
// Ensure that the constraint doesn't use an operand we do not allow
|
||
switch constr.Operand {
|
||
case ConstraintDistinctHosts, ConstraintDistinctProperty:
|
||
outer := fmt.Errorf("Constraint %d validation failed: using unsupported operand %q", idx+1, constr.Operand)
|
||
multierror.Append(&mErr, outer)
|
||
default:
|
||
if err := constr.Validate(); err != nil {
|
||
outer := fmt.Errorf("Constraint %d validation failed: %s", idx+1, err)
|
||
multierror.Append(&mErr, outer)
|
||
}
|
||
}
|
||
}
|
||
for idx, affinity := range r.Affinities {
|
||
if err := affinity.Validate(); err != nil {
|
||
outer := fmt.Errorf("Affinity %d validation failed: %s", idx+1, err)
|
||
multierror.Append(&mErr, outer)
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// NodeResources is used to define the resources available on a client node.
|
||
type NodeResources struct {
|
||
Cpu NodeCpuResources
|
||
Memory NodeMemoryResources
|
||
Disk NodeDiskResources
|
||
Networks Networks
|
||
Devices []*NodeDeviceResource
|
||
}
|
||
|
||
func (n *NodeResources) Copy() *NodeResources {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
newN := new(NodeResources)
|
||
*newN = *n
|
||
|
||
// Copy the networks
|
||
if n.Networks != nil {
|
||
networks := len(n.Networks)
|
||
newN.Networks = make([]*NetworkResource, networks)
|
||
for i := 0; i < networks; i++ {
|
||
newN.Networks[i] = n.Networks[i].Copy()
|
||
}
|
||
}
|
||
|
||
// Copy the devices
|
||
if n.Devices != nil {
|
||
devices := len(n.Devices)
|
||
newN.Devices = make([]*NodeDeviceResource, devices)
|
||
for i := 0; i < devices; i++ {
|
||
newN.Devices[i] = n.Devices[i].Copy()
|
||
}
|
||
}
|
||
|
||
return newN
|
||
}
|
||
|
||
// Comparable returns a comparable version of the nodes resources. This
|
||
// conversion can be lossy so care must be taken when using it.
|
||
func (n *NodeResources) Comparable() *ComparableResources {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
c := &ComparableResources{
|
||
Flattened: AllocatedTaskResources{
|
||
Cpu: AllocatedCpuResources{
|
||
CpuShares: n.Cpu.CpuShares,
|
||
},
|
||
Memory: AllocatedMemoryResources{
|
||
MemoryMB: n.Memory.MemoryMB,
|
||
},
|
||
Networks: n.Networks,
|
||
},
|
||
Shared: AllocatedSharedResources{
|
||
DiskMB: n.Disk.DiskMB,
|
||
},
|
||
}
|
||
return c
|
||
}
|
||
|
||
func (n *NodeResources) Merge(o *NodeResources) {
|
||
if o == nil {
|
||
return
|
||
}
|
||
|
||
n.Cpu.Merge(&o.Cpu)
|
||
n.Memory.Merge(&o.Memory)
|
||
n.Disk.Merge(&o.Disk)
|
||
|
||
if len(o.Networks) != 0 {
|
||
n.Networks = o.Networks
|
||
}
|
||
|
||
if len(o.Devices) != 0 {
|
||
n.Devices = o.Devices
|
||
}
|
||
}
|
||
|
||
func (n *NodeResources) Equals(o *NodeResources) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if !n.Cpu.Equals(&o.Cpu) {
|
||
return false
|
||
}
|
||
if !n.Memory.Equals(&o.Memory) {
|
||
return false
|
||
}
|
||
if !n.Disk.Equals(&o.Disk) {
|
||
return false
|
||
}
|
||
if !n.Networks.Equals(&o.Networks) {
|
||
return false
|
||
}
|
||
|
||
// Check the devices
|
||
if !DevicesEquals(n.Devices, o.Devices) {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// Equals equates Networks as a set
|
||
func (n *Networks) Equals(o *Networks) bool {
|
||
if n == o {
|
||
return true
|
||
}
|
||
if n == nil || o == nil {
|
||
return false
|
||
}
|
||
if len(*n) != len(*o) {
|
||
return false
|
||
}
|
||
SETEQUALS:
|
||
for _, ne := range *n {
|
||
for _, oe := range *o {
|
||
if ne.Equals(oe) {
|
||
continue SETEQUALS
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
return true
|
||
}
|
||
|
||
// DevicesEquals returns true if the two device arrays are set equal
|
||
func DevicesEquals(d1, d2 []*NodeDeviceResource) bool {
|
||
if len(d1) != len(d2) {
|
||
return false
|
||
}
|
||
idMap := make(map[DeviceIdTuple]*NodeDeviceResource, len(d1))
|
||
for _, d := range d1 {
|
||
idMap[*d.ID()] = d
|
||
}
|
||
for _, otherD := range d2 {
|
||
if d, ok := idMap[*otherD.ID()]; !ok || !d.Equals(otherD) {
|
||
return false
|
||
}
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// NodeCpuResources captures the CPU resources of the node.
|
||
type NodeCpuResources struct {
|
||
// CpuShares is the CPU shares available. This is calculated by number of
|
||
// cores multiplied by the core frequency.
|
||
CpuShares int64
|
||
}
|
||
|
||
func (n *NodeCpuResources) Merge(o *NodeCpuResources) {
|
||
if o == nil {
|
||
return
|
||
}
|
||
|
||
if o.CpuShares != 0 {
|
||
n.CpuShares = o.CpuShares
|
||
}
|
||
}
|
||
|
||
func (n *NodeCpuResources) Equals(o *NodeCpuResources) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if n.CpuShares != o.CpuShares {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// NodeMemoryResources captures the memory resources of the node
|
||
type NodeMemoryResources struct {
|
||
// MemoryMB is the total available memory on the node
|
||
MemoryMB int64
|
||
}
|
||
|
||
func (n *NodeMemoryResources) Merge(o *NodeMemoryResources) {
|
||
if o == nil {
|
||
return
|
||
}
|
||
|
||
if o.MemoryMB != 0 {
|
||
n.MemoryMB = o.MemoryMB
|
||
}
|
||
}
|
||
|
||
func (n *NodeMemoryResources) Equals(o *NodeMemoryResources) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if n.MemoryMB != o.MemoryMB {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// NodeDiskResources captures the disk resources of the node
|
||
type NodeDiskResources struct {
|
||
// DiskMB is the total available disk space on the node
|
||
DiskMB int64
|
||
}
|
||
|
||
func (n *NodeDiskResources) Merge(o *NodeDiskResources) {
|
||
if o == nil {
|
||
return
|
||
}
|
||
if o.DiskMB != 0 {
|
||
n.DiskMB = o.DiskMB
|
||
}
|
||
}
|
||
|
||
func (n *NodeDiskResources) Equals(o *NodeDiskResources) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if n.DiskMB != o.DiskMB {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// DeviceIdTuple is the tuple that identifies a device
|
||
type DeviceIdTuple struct {
|
||
Vendor string
|
||
Type string
|
||
Name string
|
||
}
|
||
|
||
func (d *DeviceIdTuple) String() string {
|
||
if d == nil {
|
||
return ""
|
||
}
|
||
|
||
return fmt.Sprintf("%s/%s/%s", d.Vendor, d.Type, d.Name)
|
||
}
|
||
|
||
// Matches returns if this Device ID is a superset of the passed ID.
|
||
func (id *DeviceIdTuple) Matches(other *DeviceIdTuple) bool {
|
||
if other == nil {
|
||
return false
|
||
}
|
||
|
||
if other.Name != "" && other.Name != id.Name {
|
||
return false
|
||
}
|
||
|
||
if other.Vendor != "" && other.Vendor != id.Vendor {
|
||
return false
|
||
}
|
||
|
||
if other.Type != "" && other.Type != id.Type {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// Equals returns if this Device ID is the same as the passed ID.
|
||
func (id *DeviceIdTuple) Equals(o *DeviceIdTuple) bool {
|
||
if id == nil && o == nil {
|
||
return true
|
||
} else if id == nil || o == nil {
|
||
return false
|
||
}
|
||
|
||
return o.Vendor == id.Vendor && o.Type == id.Type && o.Name == id.Name
|
||
}
|
||
|
||
// NodeDeviceResource captures a set of devices sharing a common
|
||
// vendor/type/device_name tuple.
|
||
type NodeDeviceResource struct {
|
||
Vendor string
|
||
Type string
|
||
Name string
|
||
Instances []*NodeDevice
|
||
Attributes map[string]*psstructs.Attribute
|
||
}
|
||
|
||
func (n *NodeDeviceResource) ID() *DeviceIdTuple {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
return &DeviceIdTuple{
|
||
Vendor: n.Vendor,
|
||
Type: n.Type,
|
||
Name: n.Name,
|
||
}
|
||
}
|
||
|
||
func (n *NodeDeviceResource) Copy() *NodeDeviceResource {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
// Copy the primitives
|
||
nn := *n
|
||
|
||
// Copy the device instances
|
||
if l := len(nn.Instances); l != 0 {
|
||
nn.Instances = make([]*NodeDevice, 0, l)
|
||
for _, d := range n.Instances {
|
||
nn.Instances = append(nn.Instances, d.Copy())
|
||
}
|
||
}
|
||
|
||
// Copy the Attributes
|
||
nn.Attributes = psstructs.CopyMapStringAttribute(nn.Attributes)
|
||
|
||
return &nn
|
||
}
|
||
|
||
func (n *NodeDeviceResource) Equals(o *NodeDeviceResource) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if n.Vendor != o.Vendor {
|
||
return false
|
||
} else if n.Type != o.Type {
|
||
return false
|
||
} else if n.Name != o.Name {
|
||
return false
|
||
}
|
||
|
||
// Check the attributes
|
||
if len(n.Attributes) != len(o.Attributes) {
|
||
return false
|
||
}
|
||
for k, v := range n.Attributes {
|
||
if otherV, ok := o.Attributes[k]; !ok || v != otherV {
|
||
return false
|
||
}
|
||
}
|
||
|
||
// Check the instances
|
||
if len(n.Instances) != len(o.Instances) {
|
||
return false
|
||
}
|
||
idMap := make(map[string]*NodeDevice, len(n.Instances))
|
||
for _, d := range n.Instances {
|
||
idMap[d.ID] = d
|
||
}
|
||
for _, otherD := range o.Instances {
|
||
if d, ok := idMap[otherD.ID]; !ok || !d.Equals(otherD) {
|
||
return false
|
||
}
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// NodeDevice is an instance of a particular device.
|
||
type NodeDevice struct {
|
||
// ID is the ID of the device.
|
||
ID string
|
||
|
||
// Healthy captures whether the device is healthy.
|
||
Healthy bool
|
||
|
||
// HealthDescription is used to provide a human readable description of why
|
||
// the device may be unhealthy.
|
||
HealthDescription string
|
||
|
||
// Locality stores HW locality information for the node to optionally be
|
||
// used when making placement decisions.
|
||
Locality *NodeDeviceLocality
|
||
}
|
||
|
||
func (n *NodeDevice) Equals(o *NodeDevice) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if n.ID != o.ID {
|
||
return false
|
||
} else if n.Healthy != o.Healthy {
|
||
return false
|
||
} else if n.HealthDescription != o.HealthDescription {
|
||
return false
|
||
} else if !n.Locality.Equals(o.Locality) {
|
||
return false
|
||
}
|
||
|
||
return false
|
||
}
|
||
|
||
func (n *NodeDevice) Copy() *NodeDevice {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
// Copy the primitives
|
||
nn := *n
|
||
|
||
// Copy the locality
|
||
nn.Locality = nn.Locality.Copy()
|
||
|
||
return &nn
|
||
}
|
||
|
||
// NodeDeviceLocality stores information about the devices hardware locality on
|
||
// the node.
|
||
type NodeDeviceLocality struct {
|
||
// PciBusID is the PCI Bus ID for the device.
|
||
PciBusID string
|
||
}
|
||
|
||
func (n *NodeDeviceLocality) Equals(o *NodeDeviceLocality) bool {
|
||
if o == nil && n == nil {
|
||
return true
|
||
} else if o == nil {
|
||
return false
|
||
} else if n == nil {
|
||
return false
|
||
}
|
||
|
||
if n.PciBusID != o.PciBusID {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
func (n *NodeDeviceLocality) Copy() *NodeDeviceLocality {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
// Copy the primitives
|
||
nn := *n
|
||
return &nn
|
||
}
|
||
|
||
// NodeReservedResources is used to capture the resources on a client node that
|
||
// should be reserved and not made available to jobs.
|
||
type NodeReservedResources struct {
|
||
Cpu NodeReservedCpuResources
|
||
Memory NodeReservedMemoryResources
|
||
Disk NodeReservedDiskResources
|
||
Networks NodeReservedNetworkResources
|
||
}
|
||
|
||
func (n *NodeReservedResources) Copy() *NodeReservedResources {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
newN := new(NodeReservedResources)
|
||
*newN = *n
|
||
return newN
|
||
}
|
||
|
||
// Comparable returns a comparable version of the node's reserved resources. The
|
||
// returned resources doesn't contain any network information. This conversion
|
||
// can be lossy so care must be taken when using it.
|
||
func (n *NodeReservedResources) Comparable() *ComparableResources {
|
||
if n == nil {
|
||
return nil
|
||
}
|
||
|
||
c := &ComparableResources{
|
||
Flattened: AllocatedTaskResources{
|
||
Cpu: AllocatedCpuResources{
|
||
CpuShares: n.Cpu.CpuShares,
|
||
},
|
||
Memory: AllocatedMemoryResources{
|
||
MemoryMB: n.Memory.MemoryMB,
|
||
},
|
||
},
|
||
Shared: AllocatedSharedResources{
|
||
DiskMB: n.Disk.DiskMB,
|
||
},
|
||
}
|
||
return c
|
||
}
|
||
|
||
// NodeReservedCpuResources captures the reserved CPU resources of the node.
|
||
type NodeReservedCpuResources struct {
|
||
CpuShares int64
|
||
}
|
||
|
||
// NodeReservedMemoryResources captures the reserved memory resources of the node.
|
||
type NodeReservedMemoryResources struct {
|
||
MemoryMB int64
|
||
}
|
||
|
||
// NodeReservedDiskResources captures the reserved disk resources of the node.
|
||
type NodeReservedDiskResources struct {
|
||
DiskMB int64
|
||
}
|
||
|
||
// NodeReservedNetworkResources captures the reserved network resources of the node.
|
||
type NodeReservedNetworkResources struct {
|
||
// ReservedHostPorts is the set of ports reserved on all host network
|
||
// interfaces. Its format is a comma separate list of integers or integer
|
||
// ranges. (80,443,1000-2000,2005)
|
||
ReservedHostPorts string
|
||
}
|
||
|
||
// ParsePortHostPorts returns the reserved host ports.
|
||
func (n *NodeReservedNetworkResources) ParseReservedHostPorts() ([]uint64, error) {
|
||
return ParsePortRanges(n.ReservedHostPorts)
|
||
}
|
||
|
||
// AllocatedResources is the set of resources to be used by an allocation.
|
||
type AllocatedResources struct {
|
||
// Tasks is a mapping of task name to the resources for the task.
|
||
Tasks map[string]*AllocatedTaskResources
|
||
|
||
// Shared is the set of resource that are shared by all tasks in the group.
|
||
Shared AllocatedSharedResources
|
||
}
|
||
|
||
func (a *AllocatedResources) Copy() *AllocatedResources {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
newA := new(AllocatedResources)
|
||
*newA = *a
|
||
|
||
if a.Tasks != nil {
|
||
tr := make(map[string]*AllocatedTaskResources, len(newA.Tasks))
|
||
for task, resource := range newA.Tasks {
|
||
tr[task] = resource.Copy()
|
||
}
|
||
newA.Tasks = tr
|
||
}
|
||
|
||
return newA
|
||
}
|
||
|
||
// Comparable returns a comparable version of the allocations allocated
|
||
// resources. This conversion can be lossy so care must be taken when using it.
|
||
func (a *AllocatedResources) Comparable() *ComparableResources {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
|
||
c := &ComparableResources{
|
||
Shared: a.Shared,
|
||
}
|
||
for _, r := range a.Tasks {
|
||
c.Flattened.Add(r)
|
||
}
|
||
return c
|
||
}
|
||
|
||
// OldTaskResources returns the pre-0.9.0 map of task resources
|
||
func (a *AllocatedResources) OldTaskResources() map[string]*Resources {
|
||
m := make(map[string]*Resources, len(a.Tasks))
|
||
for name, res := range a.Tasks {
|
||
m[name] = &Resources{
|
||
CPU: int(res.Cpu.CpuShares),
|
||
MemoryMB: int(res.Memory.MemoryMB),
|
||
Networks: res.Networks,
|
||
}
|
||
}
|
||
|
||
return m
|
||
}
|
||
|
||
// AllocatedTaskResources are the set of resources allocated to a task.
|
||
type AllocatedTaskResources struct {
|
||
Cpu AllocatedCpuResources
|
||
Memory AllocatedMemoryResources
|
||
Networks Networks
|
||
Devices []*AllocatedDeviceResource
|
||
}
|
||
|
||
func (a *AllocatedTaskResources) Copy() *AllocatedTaskResources {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
newA := new(AllocatedTaskResources)
|
||
*newA = *a
|
||
|
||
// Copy the networks
|
||
if a.Networks != nil {
|
||
n := len(a.Networks)
|
||
newA.Networks = make([]*NetworkResource, n)
|
||
for i := 0; i < n; i++ {
|
||
newA.Networks[i] = a.Networks[i].Copy()
|
||
}
|
||
}
|
||
|
||
// Copy the devices
|
||
if newA.Devices != nil {
|
||
n := len(a.Devices)
|
||
newA.Devices = make([]*AllocatedDeviceResource, n)
|
||
for i := 0; i < n; i++ {
|
||
newA.Devices[i] = a.Devices[i].Copy()
|
||
}
|
||
}
|
||
|
||
return newA
|
||
}
|
||
|
||
// NetIndex finds the matching net index using device name
|
||
func (a *AllocatedTaskResources) NetIndex(n *NetworkResource) int {
|
||
return a.Networks.NetIndex(n)
|
||
}
|
||
|
||
func (a *AllocatedTaskResources) Add(delta *AllocatedTaskResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.Cpu.Add(&delta.Cpu)
|
||
a.Memory.Add(&delta.Memory)
|
||
|
||
for _, n := range delta.Networks {
|
||
// Find the matching interface by IP or CIDR
|
||
idx := a.NetIndex(n)
|
||
if idx == -1 {
|
||
a.Networks = append(a.Networks, n.Copy())
|
||
} else {
|
||
a.Networks[idx].Add(n)
|
||
}
|
||
}
|
||
|
||
for _, d := range delta.Devices {
|
||
// Find the matching device
|
||
idx := AllocatedDevices(a.Devices).Index(d)
|
||
if idx == -1 {
|
||
a.Devices = append(a.Devices, d.Copy())
|
||
} else {
|
||
a.Devices[idx].Add(d)
|
||
}
|
||
}
|
||
}
|
||
|
||
// Comparable turns AllocatedTaskResources into ComparableResources
|
||
// as a helper step in preemption
|
||
func (a *AllocatedTaskResources) Comparable() *ComparableResources {
|
||
ret := &ComparableResources{
|
||
Flattened: AllocatedTaskResources{
|
||
Cpu: AllocatedCpuResources{
|
||
CpuShares: a.Cpu.CpuShares,
|
||
},
|
||
Memory: AllocatedMemoryResources{
|
||
MemoryMB: a.Memory.MemoryMB,
|
||
},
|
||
},
|
||
}
|
||
if len(a.Networks) > 0 {
|
||
for _, net := range a.Networks {
|
||
ret.Flattened.Networks = append(ret.Flattened.Networks, net)
|
||
}
|
||
}
|
||
return ret
|
||
}
|
||
|
||
// Subtract only subtracts CPU and Memory resources. Network utilization
|
||
// is managed separately in NetworkIndex
|
||
func (a *AllocatedTaskResources) Subtract(delta *AllocatedTaskResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.Cpu.Subtract(&delta.Cpu)
|
||
a.Memory.Subtract(&delta.Memory)
|
||
}
|
||
|
||
// AllocatedSharedResources are the set of resources allocated to a task group.
|
||
type AllocatedSharedResources struct {
|
||
DiskMB int64
|
||
}
|
||
|
||
func (a *AllocatedSharedResources) Add(delta *AllocatedSharedResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.DiskMB += delta.DiskMB
|
||
}
|
||
|
||
func (a *AllocatedSharedResources) Subtract(delta *AllocatedSharedResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.DiskMB -= delta.DiskMB
|
||
}
|
||
|
||
// AllocatedCpuResources captures the allocated CPU resources.
|
||
type AllocatedCpuResources struct {
|
||
CpuShares int64
|
||
}
|
||
|
||
func (a *AllocatedCpuResources) Add(delta *AllocatedCpuResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.CpuShares += delta.CpuShares
|
||
}
|
||
|
||
func (a *AllocatedCpuResources) Subtract(delta *AllocatedCpuResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.CpuShares -= delta.CpuShares
|
||
}
|
||
|
||
// AllocatedMemoryResources captures the allocated memory resources.
|
||
type AllocatedMemoryResources struct {
|
||
MemoryMB int64
|
||
}
|
||
|
||
func (a *AllocatedMemoryResources) Add(delta *AllocatedMemoryResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.MemoryMB += delta.MemoryMB
|
||
}
|
||
|
||
func (a *AllocatedMemoryResources) Subtract(delta *AllocatedMemoryResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.MemoryMB -= delta.MemoryMB
|
||
}
|
||
|
||
type AllocatedDevices []*AllocatedDeviceResource
|
||
|
||
// Index finds the matching index using the passed device. If not found, -1 is
|
||
// returned.
|
||
func (a AllocatedDevices) Index(d *AllocatedDeviceResource) int {
|
||
if d == nil {
|
||
return -1
|
||
}
|
||
|
||
for i, o := range a {
|
||
if o.ID().Equals(d.ID()) {
|
||
return i
|
||
}
|
||
}
|
||
|
||
return -1
|
||
}
|
||
|
||
// AllocatedDeviceResource captures a set of allocated devices.
|
||
type AllocatedDeviceResource struct {
|
||
// Vendor, Type, and Name are used to select the plugin to request the
|
||
// device IDs from.
|
||
Vendor string
|
||
Type string
|
||
Name string
|
||
|
||
// DeviceIDs is the set of allocated devices
|
||
DeviceIDs []string
|
||
}
|
||
|
||
func (a *AllocatedDeviceResource) ID() *DeviceIdTuple {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
|
||
return &DeviceIdTuple{
|
||
Vendor: a.Vendor,
|
||
Type: a.Type,
|
||
Name: a.Name,
|
||
}
|
||
}
|
||
|
||
func (a *AllocatedDeviceResource) Add(delta *AllocatedDeviceResource) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
a.DeviceIDs = append(a.DeviceIDs, delta.DeviceIDs...)
|
||
}
|
||
|
||
func (a *AllocatedDeviceResource) Copy() *AllocatedDeviceResource {
|
||
if a == nil {
|
||
return a
|
||
}
|
||
|
||
na := *a
|
||
|
||
// Copy the devices
|
||
na.DeviceIDs = make([]string, len(a.DeviceIDs))
|
||
for i, id := range a.DeviceIDs {
|
||
na.DeviceIDs[i] = id
|
||
}
|
||
|
||
return &na
|
||
}
|
||
|
||
// ComparableResources is the set of resources allocated to a task group but
|
||
// not keyed by Task, making it easier to compare.
|
||
type ComparableResources struct {
|
||
Flattened AllocatedTaskResources
|
||
Shared AllocatedSharedResources
|
||
}
|
||
|
||
func (c *ComparableResources) Add(delta *ComparableResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
c.Flattened.Add(&delta.Flattened)
|
||
c.Shared.Add(&delta.Shared)
|
||
}
|
||
|
||
func (c *ComparableResources) Subtract(delta *ComparableResources) {
|
||
if delta == nil {
|
||
return
|
||
}
|
||
|
||
c.Flattened.Subtract(&delta.Flattened)
|
||
c.Shared.Subtract(&delta.Shared)
|
||
}
|
||
|
||
func (c *ComparableResources) Copy() *ComparableResources {
|
||
if c == nil {
|
||
return nil
|
||
}
|
||
newR := new(ComparableResources)
|
||
*newR = *c
|
||
return newR
|
||
}
|
||
|
||
// Superset checks if one set of resources is a superset of another. This
|
||
// ignores network resources, and the NetworkIndex should be used for that.
|
||
func (c *ComparableResources) Superset(other *ComparableResources) (bool, string) {
|
||
if c.Flattened.Cpu.CpuShares < other.Flattened.Cpu.CpuShares {
|
||
return false, "cpu"
|
||
}
|
||
if c.Flattened.Memory.MemoryMB < other.Flattened.Memory.MemoryMB {
|
||
return false, "memory"
|
||
}
|
||
if c.Shared.DiskMB < other.Shared.DiskMB {
|
||
return false, "disk"
|
||
}
|
||
return true, ""
|
||
}
|
||
|
||
// allocated finds the matching net index using device name
|
||
func (c *ComparableResources) NetIndex(n *NetworkResource) int {
|
||
return c.Flattened.Networks.NetIndex(n)
|
||
}
|
||
|
||
const (
|
||
// JobTypeNomad is reserved for internal system tasks and is
|
||
// always handled by the CoreScheduler.
|
||
JobTypeCore = "_core"
|
||
JobTypeService = "service"
|
||
JobTypeBatch = "batch"
|
||
JobTypeSystem = "system"
|
||
)
|
||
|
||
const (
|
||
JobStatusPending = "pending" // Pending means the job is waiting on scheduling
|
||
JobStatusRunning = "running" // Running means the job has non-terminal allocations
|
||
JobStatusDead = "dead" // Dead means all evaluation's and allocations are terminal
|
||
)
|
||
|
||
const (
|
||
// JobMinPriority is the minimum allowed priority
|
||
JobMinPriority = 1
|
||
|
||
// JobDefaultPriority is the default priority if not
|
||
// not specified.
|
||
JobDefaultPriority = 50
|
||
|
||
// JobMaxPriority is the maximum allowed priority
|
||
JobMaxPriority = 100
|
||
|
||
// Ensure CoreJobPriority is higher than any user
|
||
// specified job so that it gets priority. This is important
|
||
// for the system to remain healthy.
|
||
CoreJobPriority = JobMaxPriority * 2
|
||
|
||
// JobTrackedVersions is the number of historic job versions that are
|
||
// kept.
|
||
JobTrackedVersions = 6
|
||
)
|
||
|
||
// Job is the scope of a scheduling request to Nomad. It is the largest
|
||
// scoped object, and is a named collection of task groups. Each task group
|
||
// is further composed of tasks. A task group (TG) is the unit of scheduling
|
||
// however.
|
||
type Job struct {
|
||
// Stop marks whether the user has stopped the job. A stopped job will
|
||
// have all created allocations stopped and acts as a way to stop a job
|
||
// without purging it from the system. This allows existing allocs to be
|
||
// queried and the job to be inspected as it is being killed.
|
||
Stop bool
|
||
|
||
// Region is the Nomad region that handles scheduling this job
|
||
Region string
|
||
|
||
// Namespace is the namespace the job is submitted into.
|
||
Namespace string
|
||
|
||
// ID is a unique identifier for the job per region. It can be
|
||
// specified hierarchically like LineOfBiz/OrgName/Team/Project
|
||
ID string
|
||
|
||
// ParentID is the unique identifier of the job that spawned this job.
|
||
ParentID string
|
||
|
||
// Name is the logical name of the job used to refer to it. This is unique
|
||
// per region, but not unique globally.
|
||
Name string
|
||
|
||
// Type is used to control various behaviors about the job. Most jobs
|
||
// are service jobs, meaning they are expected to be long lived.
|
||
// Some jobs are batch oriented meaning they run and then terminate.
|
||
// This can be extended in the future to support custom schedulers.
|
||
Type string
|
||
|
||
// Priority is used to control scheduling importance and if this job
|
||
// can preempt other jobs.
|
||
Priority int
|
||
|
||
// AllAtOnce is used to control if incremental scheduling of task groups
|
||
// is allowed or if we must do a gang scheduling of the entire job. This
|
||
// can slow down larger jobs if resources are not available.
|
||
AllAtOnce bool
|
||
|
||
// Datacenters contains all the datacenters this job is allowed to span
|
||
Datacenters []string
|
||
|
||
// Constraints can be specified at a job level and apply to
|
||
// all the task groups and tasks.
|
||
Constraints []*Constraint
|
||
|
||
// Affinities can be specified at the job level to express
|
||
// scheduling preferences that apply to all groups and tasks
|
||
Affinities []*Affinity
|
||
|
||
// Spread can be specified at the job level to express spreading
|
||
// allocations across a desired attribute, such as datacenter
|
||
Spreads []*Spread
|
||
|
||
// TaskGroups are the collections of task groups that this job needs
|
||
// to run. Each task group is an atomic unit of scheduling and placement.
|
||
TaskGroups []*TaskGroup
|
||
|
||
// COMPAT: Remove in 0.7.0. Stagger is deprecated in 0.6.0.
|
||
Update UpdateStrategy
|
||
|
||
// Periodic is used to define the interval the job is run at.
|
||
Periodic *PeriodicConfig
|
||
|
||
// ParameterizedJob is used to specify the job as a parameterized job
|
||
// for dispatching.
|
||
ParameterizedJob *ParameterizedJobConfig
|
||
|
||
// Dispatched is used to identify if the Job has been dispatched from a
|
||
// parameterized job.
|
||
Dispatched bool
|
||
|
||
// Payload is the payload supplied when the job was dispatched.
|
||
Payload []byte
|
||
|
||
// Meta is used to associate arbitrary metadata with this
|
||
// job. This is opaque to Nomad.
|
||
Meta map[string]string
|
||
|
||
// VaultToken is the Vault token that proves the submitter of the job has
|
||
// access to the specified Vault policies. This field is only used to
|
||
// transfer the token and is not stored after Job submission.
|
||
VaultToken string
|
||
|
||
// Job status
|
||
Status string
|
||
|
||
// StatusDescription is meant to provide more human useful information
|
||
StatusDescription string
|
||
|
||
// Stable marks a job as stable. Stability is only defined on "service" and
|
||
// "system" jobs. The stability of a job will be set automatically as part
|
||
// of a deployment and can be manually set via APIs.
|
||
Stable bool
|
||
|
||
// Version is a monotonically increasing version number that is incremented
|
||
// on each job register.
|
||
Version uint64
|
||
|
||
// SubmitTime is the time at which the job was submitted as a UnixNano in
|
||
// UTC
|
||
SubmitTime int64
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
JobModifyIndex uint64
|
||
}
|
||
|
||
// NamespacedID returns the namespaced id useful for logging
|
||
func (j *Job) NamespacedID() *NamespacedID {
|
||
return &NamespacedID{
|
||
ID: j.ID,
|
||
Namespace: j.Namespace,
|
||
}
|
||
}
|
||
|
||
// Canonicalize is used to canonicalize fields in the Job. This should be called
|
||
// when registering a Job. A set of warnings are returned if the job was changed
|
||
// in anyway that the user should be made aware of.
|
||
func (j *Job) Canonicalize() (warnings error) {
|
||
if j == nil {
|
||
return nil
|
||
}
|
||
|
||
var mErr multierror.Error
|
||
// Ensure that an empty and nil map are treated the same to avoid scheduling
|
||
// problems since we use reflect DeepEquals.
|
||
if len(j.Meta) == 0 {
|
||
j.Meta = nil
|
||
}
|
||
|
||
// Ensure the job is in a namespace.
|
||
if j.Namespace == "" {
|
||
j.Namespace = DefaultNamespace
|
||
}
|
||
|
||
for _, tg := range j.TaskGroups {
|
||
tg.Canonicalize(j)
|
||
}
|
||
|
||
if j.ParameterizedJob != nil {
|
||
j.ParameterizedJob.Canonicalize()
|
||
}
|
||
|
||
if j.Periodic != nil {
|
||
j.Periodic.Canonicalize()
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Copy returns a deep copy of the Job. It is expected that callers use recover.
|
||
// This job can panic if the deep copy failed as it uses reflection.
|
||
func (j *Job) Copy() *Job {
|
||
if j == nil {
|
||
return nil
|
||
}
|
||
nj := new(Job)
|
||
*nj = *j
|
||
nj.Datacenters = helper.CopySliceString(nj.Datacenters)
|
||
nj.Constraints = CopySliceConstraints(nj.Constraints)
|
||
nj.Affinities = CopySliceAffinities(nj.Affinities)
|
||
|
||
if j.TaskGroups != nil {
|
||
tgs := make([]*TaskGroup, len(nj.TaskGroups))
|
||
for i, tg := range nj.TaskGroups {
|
||
tgs[i] = tg.Copy()
|
||
}
|
||
nj.TaskGroups = tgs
|
||
}
|
||
|
||
nj.Periodic = nj.Periodic.Copy()
|
||
nj.Meta = helper.CopyMapStringString(nj.Meta)
|
||
nj.ParameterizedJob = nj.ParameterizedJob.Copy()
|
||
return nj
|
||
}
|
||
|
||
// Validate is used to sanity check a job input
|
||
func (j *Job) Validate() error {
|
||
var mErr multierror.Error
|
||
|
||
if j.Region == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing job region"))
|
||
}
|
||
if j.ID == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing job ID"))
|
||
} else if strings.Contains(j.ID, " ") {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Job ID contains a space"))
|
||
}
|
||
if j.Name == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing job name"))
|
||
}
|
||
if j.Namespace == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Job must be in a namespace"))
|
||
}
|
||
switch j.Type {
|
||
case JobTypeCore, JobTypeService, JobTypeBatch, JobTypeSystem:
|
||
case "":
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing job type"))
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Invalid job type: %q", j.Type))
|
||
}
|
||
if j.Priority < JobMinPriority || j.Priority > JobMaxPriority {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Job priority must be between [%d, %d]", JobMinPriority, JobMaxPriority))
|
||
}
|
||
if len(j.Datacenters) == 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing job datacenters"))
|
||
}
|
||
if len(j.TaskGroups) == 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing job task groups"))
|
||
}
|
||
for idx, constr := range j.Constraints {
|
||
if err := constr.Validate(); err != nil {
|
||
outer := fmt.Errorf("Constraint %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
if j.Type == JobTypeSystem {
|
||
if j.Affinities != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("System jobs may not have an affinity stanza"))
|
||
}
|
||
} else {
|
||
for idx, affinity := range j.Affinities {
|
||
if err := affinity.Validate(); err != nil {
|
||
outer := fmt.Errorf("Affinity %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
}
|
||
|
||
if j.Type == JobTypeSystem {
|
||
if j.Spreads != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("System jobs may not have a spread stanza"))
|
||
}
|
||
} else {
|
||
for idx, spread := range j.Spreads {
|
||
if err := spread.Validate(); err != nil {
|
||
outer := fmt.Errorf("Spread %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
}
|
||
|
||
// Check for duplicate task groups
|
||
taskGroups := make(map[string]int)
|
||
for idx, tg := range j.TaskGroups {
|
||
if tg.Name == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Job task group %d missing name", idx+1))
|
||
} else if existing, ok := taskGroups[tg.Name]; ok {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Job task group %d redefines '%s' from group %d", idx+1, tg.Name, existing+1))
|
||
} else {
|
||
taskGroups[tg.Name] = idx
|
||
}
|
||
|
||
if j.Type == "system" && tg.Count > 1 {
|
||
mErr.Errors = append(mErr.Errors,
|
||
fmt.Errorf("Job task group %s has count %d. Count cannot exceed 1 with system scheduler",
|
||
tg.Name, tg.Count))
|
||
}
|
||
}
|
||
|
||
// Validate the task group
|
||
for _, tg := range j.TaskGroups {
|
||
if err := tg.Validate(j); err != nil {
|
||
outer := fmt.Errorf("Task group %s validation failed: %v", tg.Name, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
|
||
// Validate periodic is only used with batch jobs.
|
||
if j.IsPeriodic() && j.Periodic.Enabled {
|
||
if j.Type != JobTypeBatch {
|
||
mErr.Errors = append(mErr.Errors,
|
||
fmt.Errorf("Periodic can only be used with %q scheduler", JobTypeBatch))
|
||
}
|
||
|
||
if err := j.Periodic.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
}
|
||
|
||
if j.IsParameterized() {
|
||
if j.Type != JobTypeBatch {
|
||
mErr.Errors = append(mErr.Errors,
|
||
fmt.Errorf("Parameterized job can only be used with %q scheduler", JobTypeBatch))
|
||
}
|
||
|
||
if err := j.ParameterizedJob.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Warnings returns a list of warnings that may be from dubious settings or
|
||
// deprecation warnings.
|
||
func (j *Job) Warnings() error {
|
||
var mErr multierror.Error
|
||
|
||
// Check the groups
|
||
for _, tg := range j.TaskGroups {
|
||
if err := tg.Warnings(j); err != nil {
|
||
outer := fmt.Errorf("Group %q has warnings: %v", tg.Name, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// LookupTaskGroup finds a task group by name
|
||
func (j *Job) LookupTaskGroup(name string) *TaskGroup {
|
||
for _, tg := range j.TaskGroups {
|
||
if tg.Name == name {
|
||
return tg
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// CombinedTaskMeta takes a TaskGroup and Task name and returns the combined
|
||
// meta data for the task. When joining Job, Group and Task Meta, the precedence
|
||
// is by deepest scope (Task > Group > Job).
|
||
func (j *Job) CombinedTaskMeta(groupName, taskName string) map[string]string {
|
||
group := j.LookupTaskGroup(groupName)
|
||
if group == nil {
|
||
return nil
|
||
}
|
||
|
||
task := group.LookupTask(taskName)
|
||
if task == nil {
|
||
return nil
|
||
}
|
||
|
||
meta := helper.CopyMapStringString(task.Meta)
|
||
if meta == nil {
|
||
meta = make(map[string]string, len(group.Meta)+len(j.Meta))
|
||
}
|
||
|
||
// Add the group specific meta
|
||
for k, v := range group.Meta {
|
||
if _, ok := meta[k]; !ok {
|
||
meta[k] = v
|
||
}
|
||
}
|
||
|
||
// Add the job specific meta
|
||
for k, v := range j.Meta {
|
||
if _, ok := meta[k]; !ok {
|
||
meta[k] = v
|
||
}
|
||
}
|
||
|
||
return meta
|
||
}
|
||
|
||
// Stopped returns if a job is stopped.
|
||
func (j *Job) Stopped() bool {
|
||
return j == nil || j.Stop
|
||
}
|
||
|
||
// HasUpdateStrategy returns if any task group in the job has an update strategy
|
||
func (j *Job) HasUpdateStrategy() bool {
|
||
for _, tg := range j.TaskGroups {
|
||
if tg.Update != nil {
|
||
return true
|
||
}
|
||
}
|
||
|
||
return false
|
||
}
|
||
|
||
// Stub is used to return a summary of the job
|
||
func (j *Job) Stub(summary *JobSummary) *JobListStub {
|
||
return &JobListStub{
|
||
ID: j.ID,
|
||
ParentID: j.ParentID,
|
||
Name: j.Name,
|
||
Datacenters: j.Datacenters,
|
||
Type: j.Type,
|
||
Priority: j.Priority,
|
||
Periodic: j.IsPeriodic(),
|
||
ParameterizedJob: j.IsParameterized(),
|
||
Stop: j.Stop,
|
||
Status: j.Status,
|
||
StatusDescription: j.StatusDescription,
|
||
CreateIndex: j.CreateIndex,
|
||
ModifyIndex: j.ModifyIndex,
|
||
JobModifyIndex: j.JobModifyIndex,
|
||
SubmitTime: j.SubmitTime,
|
||
JobSummary: summary,
|
||
}
|
||
}
|
||
|
||
// IsPeriodic returns whether a job is periodic.
|
||
func (j *Job) IsPeriodic() bool {
|
||
return j.Periodic != nil
|
||
}
|
||
|
||
// IsPeriodicActive returns whether the job is an active periodic job that will
|
||
// create child jobs
|
||
func (j *Job) IsPeriodicActive() bool {
|
||
return j.IsPeriodic() && j.Periodic.Enabled && !j.Stopped() && !j.IsParameterized()
|
||
}
|
||
|
||
// IsParameterized returns whether a job is parameterized job.
|
||
func (j *Job) IsParameterized() bool {
|
||
return j.ParameterizedJob != nil && !j.Dispatched
|
||
}
|
||
|
||
// VaultPolicies returns the set of Vault policies per task group, per task
|
||
func (j *Job) VaultPolicies() map[string]map[string]*Vault {
|
||
policies := make(map[string]map[string]*Vault, len(j.TaskGroups))
|
||
|
||
for _, tg := range j.TaskGroups {
|
||
tgPolicies := make(map[string]*Vault, len(tg.Tasks))
|
||
|
||
for _, task := range tg.Tasks {
|
||
if task.Vault == nil {
|
||
continue
|
||
}
|
||
|
||
tgPolicies[task.Name] = task.Vault
|
||
}
|
||
|
||
if len(tgPolicies) != 0 {
|
||
policies[tg.Name] = tgPolicies
|
||
}
|
||
}
|
||
|
||
return policies
|
||
}
|
||
|
||
// RequiredSignals returns a mapping of task groups to tasks to their required
|
||
// set of signals
|
||
func (j *Job) RequiredSignals() map[string]map[string][]string {
|
||
signals := make(map[string]map[string][]string)
|
||
|
||
for _, tg := range j.TaskGroups {
|
||
for _, task := range tg.Tasks {
|
||
// Use this local one as a set
|
||
taskSignals := make(map[string]struct{})
|
||
|
||
// Check if the Vault change mode uses signals
|
||
if task.Vault != nil && task.Vault.ChangeMode == VaultChangeModeSignal {
|
||
taskSignals[task.Vault.ChangeSignal] = struct{}{}
|
||
}
|
||
|
||
// If a user has specified a KillSignal, add it to required signals
|
||
if task.KillSignal != "" {
|
||
taskSignals[task.KillSignal] = struct{}{}
|
||
}
|
||
|
||
// Check if any template change mode uses signals
|
||
for _, t := range task.Templates {
|
||
if t.ChangeMode != TemplateChangeModeSignal {
|
||
continue
|
||
}
|
||
|
||
taskSignals[t.ChangeSignal] = struct{}{}
|
||
}
|
||
|
||
// Flatten and sort the signals
|
||
l := len(taskSignals)
|
||
if l == 0 {
|
||
continue
|
||
}
|
||
|
||
flat := make([]string, 0, l)
|
||
for sig := range taskSignals {
|
||
flat = append(flat, sig)
|
||
}
|
||
|
||
sort.Strings(flat)
|
||
tgSignals, ok := signals[tg.Name]
|
||
if !ok {
|
||
tgSignals = make(map[string][]string)
|
||
signals[tg.Name] = tgSignals
|
||
}
|
||
tgSignals[task.Name] = flat
|
||
}
|
||
|
||
}
|
||
|
||
return signals
|
||
}
|
||
|
||
// SpecChanged determines if the functional specification has changed between
|
||
// two job versions.
|
||
func (j *Job) SpecChanged(new *Job) bool {
|
||
if j == nil {
|
||
return new != nil
|
||
}
|
||
|
||
// Create a copy of the new job
|
||
c := new.Copy()
|
||
|
||
// Update the new job so we can do a reflect
|
||
c.Status = j.Status
|
||
c.StatusDescription = j.StatusDescription
|
||
c.Stable = j.Stable
|
||
c.Version = j.Version
|
||
c.CreateIndex = j.CreateIndex
|
||
c.ModifyIndex = j.ModifyIndex
|
||
c.JobModifyIndex = j.JobModifyIndex
|
||
c.SubmitTime = j.SubmitTime
|
||
|
||
// Deep equals the jobs
|
||
return !reflect.DeepEqual(j, c)
|
||
}
|
||
|
||
func (j *Job) SetSubmitTime() {
|
||
j.SubmitTime = time.Now().UTC().UnixNano()
|
||
}
|
||
|
||
// JobListStub is used to return a subset of job information
|
||
// for the job list
|
||
type JobListStub struct {
|
||
ID string
|
||
ParentID string
|
||
Name string
|
||
Datacenters []string
|
||
Type string
|
||
Priority int
|
||
Periodic bool
|
||
ParameterizedJob bool
|
||
Stop bool
|
||
Status string
|
||
StatusDescription string
|
||
JobSummary *JobSummary
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
JobModifyIndex uint64
|
||
SubmitTime int64
|
||
}
|
||
|
||
// JobSummary summarizes the state of the allocations of a job
|
||
type JobSummary struct {
|
||
// JobID is the ID of the job the summary is for
|
||
JobID string
|
||
|
||
// Namespace is the namespace of the job and its summary
|
||
Namespace string
|
||
|
||
// Summary contains the summary per task group for the Job
|
||
Summary map[string]TaskGroupSummary
|
||
|
||
// Children contains a summary for the children of this job.
|
||
Children *JobChildrenSummary
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// Copy returns a new copy of JobSummary
|
||
func (js *JobSummary) Copy() *JobSummary {
|
||
newJobSummary := new(JobSummary)
|
||
*newJobSummary = *js
|
||
newTGSummary := make(map[string]TaskGroupSummary, len(js.Summary))
|
||
for k, v := range js.Summary {
|
||
newTGSummary[k] = v
|
||
}
|
||
newJobSummary.Summary = newTGSummary
|
||
newJobSummary.Children = newJobSummary.Children.Copy()
|
||
return newJobSummary
|
||
}
|
||
|
||
// JobChildrenSummary contains the summary of children job statuses
|
||
type JobChildrenSummary struct {
|
||
Pending int64
|
||
Running int64
|
||
Dead int64
|
||
}
|
||
|
||
// Copy returns a new copy of a JobChildrenSummary
|
||
func (jc *JobChildrenSummary) Copy() *JobChildrenSummary {
|
||
if jc == nil {
|
||
return nil
|
||
}
|
||
|
||
njc := new(JobChildrenSummary)
|
||
*njc = *jc
|
||
return njc
|
||
}
|
||
|
||
// TaskGroup summarizes the state of all the allocations of a particular
|
||
// TaskGroup
|
||
type TaskGroupSummary struct {
|
||
Queued int
|
||
Complete int
|
||
Failed int
|
||
Running int
|
||
Starting int
|
||
Lost int
|
||
}
|
||
|
||
const (
|
||
// Checks uses any registered health check state in combination with task
|
||
// states to determine if a allocation is healthy.
|
||
UpdateStrategyHealthCheck_Checks = "checks"
|
||
|
||
// TaskStates uses the task states of an allocation to determine if the
|
||
// allocation is healthy.
|
||
UpdateStrategyHealthCheck_TaskStates = "task_states"
|
||
|
||
// Manual allows the operator to manually signal to Nomad when an
|
||
// allocations is healthy. This allows more advanced health checking that is
|
||
// outside of the scope of Nomad.
|
||
UpdateStrategyHealthCheck_Manual = "manual"
|
||
)
|
||
|
||
var (
|
||
// DefaultUpdateStrategy provides a baseline that can be used to upgrade
|
||
// jobs with the old policy or for populating field defaults.
|
||
DefaultUpdateStrategy = &UpdateStrategy{
|
||
Stagger: 30 * time.Second,
|
||
MaxParallel: 1,
|
||
HealthCheck: UpdateStrategyHealthCheck_Checks,
|
||
MinHealthyTime: 10 * time.Second,
|
||
HealthyDeadline: 5 * time.Minute,
|
||
ProgressDeadline: 10 * time.Minute,
|
||
AutoRevert: false,
|
||
Canary: 0,
|
||
}
|
||
)
|
||
|
||
// UpdateStrategy is used to modify how updates are done
|
||
type UpdateStrategy struct {
|
||
// Stagger is used to determine the rate at which allocations are migrated
|
||
// due to down or draining nodes.
|
||
Stagger time.Duration
|
||
|
||
// MaxParallel is how many updates can be done in parallel
|
||
MaxParallel int
|
||
|
||
// HealthCheck specifies the mechanism in which allocations are marked
|
||
// healthy or unhealthy as part of a deployment.
|
||
HealthCheck string
|
||
|
||
// MinHealthyTime is the minimum time an allocation must be in the healthy
|
||
// state before it is marked as healthy, unblocking more allocations to be
|
||
// rolled.
|
||
MinHealthyTime time.Duration
|
||
|
||
// HealthyDeadline is the time in which an allocation must be marked as
|
||
// healthy before it is automatically transitioned to unhealthy. This time
|
||
// period doesn't count against the MinHealthyTime.
|
||
HealthyDeadline time.Duration
|
||
|
||
// ProgressDeadline is the time in which an allocation as part of the
|
||
// deployment must transition to healthy. If no allocation becomes healthy
|
||
// after the deadline, the deployment is marked as failed. If the deadline
|
||
// is zero, the first failure causes the deployment to fail.
|
||
ProgressDeadline time.Duration
|
||
|
||
// AutoRevert declares that if a deployment fails because of unhealthy
|
||
// allocations, there should be an attempt to auto-revert the job to a
|
||
// stable version.
|
||
AutoRevert bool
|
||
|
||
// Canary is the number of canaries to deploy when a change to the task
|
||
// group is detected.
|
||
Canary int
|
||
}
|
||
|
||
func (u *UpdateStrategy) Copy() *UpdateStrategy {
|
||
if u == nil {
|
||
return nil
|
||
}
|
||
|
||
copy := new(UpdateStrategy)
|
||
*copy = *u
|
||
return copy
|
||
}
|
||
|
||
func (u *UpdateStrategy) Validate() error {
|
||
if u == nil {
|
||
return nil
|
||
}
|
||
|
||
var mErr multierror.Error
|
||
switch u.HealthCheck {
|
||
case UpdateStrategyHealthCheck_Checks, UpdateStrategyHealthCheck_TaskStates, UpdateStrategyHealthCheck_Manual:
|
||
default:
|
||
multierror.Append(&mErr, fmt.Errorf("Invalid health check given: %q", u.HealthCheck))
|
||
}
|
||
|
||
if u.MaxParallel < 1 {
|
||
multierror.Append(&mErr, fmt.Errorf("Max parallel can not be less than one: %d < 1", u.MaxParallel))
|
||
}
|
||
if u.Canary < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Canary count can not be less than zero: %d < 0", u.Canary))
|
||
}
|
||
if u.MinHealthyTime < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Minimum healthy time may not be less than zero: %v", u.MinHealthyTime))
|
||
}
|
||
if u.HealthyDeadline <= 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Healthy deadline must be greater than zero: %v", u.HealthyDeadline))
|
||
}
|
||
if u.ProgressDeadline < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Progress deadline must be zero or greater: %v", u.ProgressDeadline))
|
||
}
|
||
if u.MinHealthyTime >= u.HealthyDeadline {
|
||
multierror.Append(&mErr, fmt.Errorf("Minimum healthy time must be less than healthy deadline: %v > %v", u.MinHealthyTime, u.HealthyDeadline))
|
||
}
|
||
if u.ProgressDeadline != 0 && u.HealthyDeadline >= u.ProgressDeadline {
|
||
multierror.Append(&mErr, fmt.Errorf("Healthy deadline must be less than progress deadline: %v > %v", u.HealthyDeadline, u.ProgressDeadline))
|
||
}
|
||
if u.Stagger <= 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Stagger must be greater than zero: %v", u.Stagger))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// TODO(alexdadgar): Remove once no longer used by the scheduler.
|
||
// Rolling returns if a rolling strategy should be used
|
||
func (u *UpdateStrategy) Rolling() bool {
|
||
return u.Stagger > 0 && u.MaxParallel > 0
|
||
}
|
||
|
||
const (
|
||
// PeriodicSpecCron is used for a cron spec.
|
||
PeriodicSpecCron = "cron"
|
||
|
||
// PeriodicSpecTest is only used by unit tests. It is a sorted, comma
|
||
// separated list of unix timestamps at which to launch.
|
||
PeriodicSpecTest = "_internal_test"
|
||
)
|
||
|
||
// Periodic defines the interval a job should be run at.
|
||
type PeriodicConfig struct {
|
||
// Enabled determines if the job should be run periodically.
|
||
Enabled bool
|
||
|
||
// Spec specifies the interval the job should be run as. It is parsed based
|
||
// on the SpecType.
|
||
Spec string
|
||
|
||
// SpecType defines the format of the spec.
|
||
SpecType string
|
||
|
||
// ProhibitOverlap enforces that spawned jobs do not run in parallel.
|
||
ProhibitOverlap bool
|
||
|
||
// TimeZone is the user specified string that determines the time zone to
|
||
// launch against. The time zones must be specified from IANA Time Zone
|
||
// database, such as "America/New_York".
|
||
// Reference: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
|
||
// Reference: https://www.iana.org/time-zones
|
||
TimeZone string
|
||
|
||
// location is the time zone to evaluate the launch time against
|
||
location *time.Location
|
||
}
|
||
|
||
func (p *PeriodicConfig) Copy() *PeriodicConfig {
|
||
if p == nil {
|
||
return nil
|
||
}
|
||
np := new(PeriodicConfig)
|
||
*np = *p
|
||
return np
|
||
}
|
||
|
||
func (p *PeriodicConfig) Validate() error {
|
||
if !p.Enabled {
|
||
return nil
|
||
}
|
||
|
||
var mErr multierror.Error
|
||
if p.Spec == "" {
|
||
multierror.Append(&mErr, fmt.Errorf("Must specify a spec"))
|
||
}
|
||
|
||
// Check if we got a valid time zone
|
||
if p.TimeZone != "" {
|
||
if _, err := time.LoadLocation(p.TimeZone); err != nil {
|
||
multierror.Append(&mErr, fmt.Errorf("Invalid time zone %q: %v", p.TimeZone, err))
|
||
}
|
||
}
|
||
|
||
switch p.SpecType {
|
||
case PeriodicSpecCron:
|
||
// Validate the cron spec
|
||
if _, err := cronexpr.Parse(p.Spec); err != nil {
|
||
multierror.Append(&mErr, fmt.Errorf("Invalid cron spec %q: %v", p.Spec, err))
|
||
}
|
||
case PeriodicSpecTest:
|
||
// No-op
|
||
default:
|
||
multierror.Append(&mErr, fmt.Errorf("Unknown periodic specification type %q", p.SpecType))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func (p *PeriodicConfig) Canonicalize() {
|
||
// Load the location
|
||
l, err := time.LoadLocation(p.TimeZone)
|
||
if err != nil {
|
||
p.location = time.UTC
|
||
}
|
||
|
||
p.location = l
|
||
}
|
||
|
||
// CronParseNext is a helper that parses the next time for the given expression
|
||
// but captures any panic that may occur in the underlying library.
|
||
func CronParseNext(e *cronexpr.Expression, fromTime time.Time, spec string) (t time.Time, err error) {
|
||
defer func() {
|
||
if recover() != nil {
|
||
t = time.Time{}
|
||
err = fmt.Errorf("failed parsing cron expression: %q", spec)
|
||
}
|
||
}()
|
||
|
||
return e.Next(fromTime), nil
|
||
}
|
||
|
||
// Next returns the closest time instant matching the spec that is after the
|
||
// passed time. If no matching instance exists, the zero value of time.Time is
|
||
// returned. The `time.Location` of the returned value matches that of the
|
||
// passed time.
|
||
func (p *PeriodicConfig) Next(fromTime time.Time) (time.Time, error) {
|
||
switch p.SpecType {
|
||
case PeriodicSpecCron:
|
||
if e, err := cronexpr.Parse(p.Spec); err == nil {
|
||
return CronParseNext(e, fromTime, p.Spec)
|
||
}
|
||
case PeriodicSpecTest:
|
||
split := strings.Split(p.Spec, ",")
|
||
if len(split) == 1 && split[0] == "" {
|
||
return time.Time{}, nil
|
||
}
|
||
|
||
// Parse the times
|
||
times := make([]time.Time, len(split))
|
||
for i, s := range split {
|
||
unix, err := strconv.Atoi(s)
|
||
if err != nil {
|
||
return time.Time{}, nil
|
||
}
|
||
|
||
times[i] = time.Unix(int64(unix), 0)
|
||
}
|
||
|
||
// Find the next match
|
||
for _, next := range times {
|
||
if fromTime.Before(next) {
|
||
return next, nil
|
||
}
|
||
}
|
||
}
|
||
|
||
return time.Time{}, nil
|
||
}
|
||
|
||
// GetLocation returns the location to use for determining the time zone to run
|
||
// the periodic job against.
|
||
func (p *PeriodicConfig) GetLocation() *time.Location {
|
||
// Jobs pre 0.5.5 will not have this
|
||
if p.location != nil {
|
||
return p.location
|
||
}
|
||
|
||
return time.UTC
|
||
}
|
||
|
||
const (
|
||
// PeriodicLaunchSuffix is the string appended to the periodic jobs ID
|
||
// when launching derived instances of it.
|
||
PeriodicLaunchSuffix = "/periodic-"
|
||
)
|
||
|
||
// PeriodicLaunch tracks the last launch time of a periodic job.
|
||
type PeriodicLaunch struct {
|
||
ID string // ID of the periodic job.
|
||
Namespace string // Namespace of the periodic job
|
||
Launch time.Time // The last launch time.
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
const (
|
||
DispatchPayloadForbidden = "forbidden"
|
||
DispatchPayloadOptional = "optional"
|
||
DispatchPayloadRequired = "required"
|
||
|
||
// DispatchLaunchSuffix is the string appended to the parameterized job's ID
|
||
// when dispatching instances of it.
|
||
DispatchLaunchSuffix = "/dispatch-"
|
||
)
|
||
|
||
// ParameterizedJobConfig is used to configure the parameterized job
|
||
type ParameterizedJobConfig struct {
|
||
// Payload configure the payload requirements
|
||
Payload string
|
||
|
||
// MetaRequired is metadata keys that must be specified by the dispatcher
|
||
MetaRequired []string
|
||
|
||
// MetaOptional is metadata keys that may be specified by the dispatcher
|
||
MetaOptional []string
|
||
}
|
||
|
||
func (d *ParameterizedJobConfig) Validate() error {
|
||
var mErr multierror.Error
|
||
switch d.Payload {
|
||
case DispatchPayloadOptional, DispatchPayloadRequired, DispatchPayloadForbidden:
|
||
default:
|
||
multierror.Append(&mErr, fmt.Errorf("Unknown payload requirement: %q", d.Payload))
|
||
}
|
||
|
||
// Check that the meta configurations are disjoint sets
|
||
disjoint, offending := helper.SliceSetDisjoint(d.MetaRequired, d.MetaOptional)
|
||
if !disjoint {
|
||
multierror.Append(&mErr, fmt.Errorf("Required and optional meta keys should be disjoint. Following keys exist in both: %v", offending))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func (d *ParameterizedJobConfig) Canonicalize() {
|
||
if d.Payload == "" {
|
||
d.Payload = DispatchPayloadOptional
|
||
}
|
||
}
|
||
|
||
func (d *ParameterizedJobConfig) Copy() *ParameterizedJobConfig {
|
||
if d == nil {
|
||
return nil
|
||
}
|
||
nd := new(ParameterizedJobConfig)
|
||
*nd = *d
|
||
nd.MetaOptional = helper.CopySliceString(nd.MetaOptional)
|
||
nd.MetaRequired = helper.CopySliceString(nd.MetaRequired)
|
||
return nd
|
||
}
|
||
|
||
// DispatchedID returns an ID appropriate for a job dispatched against a
|
||
// particular parameterized job
|
||
func DispatchedID(templateID string, t time.Time) string {
|
||
u := uuid.Generate()[:8]
|
||
return fmt.Sprintf("%s%s%d-%s", templateID, DispatchLaunchSuffix, t.Unix(), u)
|
||
}
|
||
|
||
// DispatchPayloadConfig configures how a task gets its input from a job dispatch
|
||
type DispatchPayloadConfig struct {
|
||
// File specifies a relative path to where the input data should be written
|
||
File string
|
||
}
|
||
|
||
func (d *DispatchPayloadConfig) Copy() *DispatchPayloadConfig {
|
||
if d == nil {
|
||
return nil
|
||
}
|
||
nd := new(DispatchPayloadConfig)
|
||
*nd = *d
|
||
return nd
|
||
}
|
||
|
||
func (d *DispatchPayloadConfig) Validate() error {
|
||
// Verify the destination doesn't escape
|
||
escaped, err := PathEscapesAllocDir("task/local/", d.File)
|
||
if err != nil {
|
||
return fmt.Errorf("invalid destination path: %v", err)
|
||
} else if escaped {
|
||
return fmt.Errorf("destination escapes allocation directory")
|
||
}
|
||
|
||
return nil
|
||
}
|
||
|
||
var (
|
||
// These default restart policies needs to be in sync with
|
||
// Canonicalize in api/tasks.go
|
||
|
||
DefaultServiceJobRestartPolicy = RestartPolicy{
|
||
Delay: 15 * time.Second,
|
||
Attempts: 2,
|
||
Interval: 30 * time.Minute,
|
||
Mode: RestartPolicyModeFail,
|
||
}
|
||
DefaultBatchJobRestartPolicy = RestartPolicy{
|
||
Delay: 15 * time.Second,
|
||
Attempts: 3,
|
||
Interval: 24 * time.Hour,
|
||
Mode: RestartPolicyModeFail,
|
||
}
|
||
)
|
||
|
||
var (
|
||
// These default reschedule policies needs to be in sync with
|
||
// NewDefaultReschedulePolicy in api/tasks.go
|
||
|
||
DefaultServiceJobReschedulePolicy = ReschedulePolicy{
|
||
Delay: 30 * time.Second,
|
||
DelayFunction: "exponential",
|
||
MaxDelay: 1 * time.Hour,
|
||
Unlimited: true,
|
||
}
|
||
DefaultBatchJobReschedulePolicy = ReschedulePolicy{
|
||
Attempts: 1,
|
||
Interval: 24 * time.Hour,
|
||
Delay: 5 * time.Second,
|
||
DelayFunction: "constant",
|
||
}
|
||
)
|
||
|
||
const (
|
||
// RestartPolicyModeDelay causes an artificial delay till the next interval is
|
||
// reached when the specified attempts have been reached in the interval.
|
||
RestartPolicyModeDelay = "delay"
|
||
|
||
// RestartPolicyModeFail causes a job to fail if the specified number of
|
||
// attempts are reached within an interval.
|
||
RestartPolicyModeFail = "fail"
|
||
|
||
// RestartPolicyMinInterval is the minimum interval that is accepted for a
|
||
// restart policy.
|
||
RestartPolicyMinInterval = 5 * time.Second
|
||
|
||
// ReasonWithinPolicy describes restart events that are within policy
|
||
ReasonWithinPolicy = "Restart within policy"
|
||
)
|
||
|
||
// RestartPolicy configures how Tasks are restarted when they crash or fail.
|
||
type RestartPolicy struct {
|
||
// Attempts is the number of restart that will occur in an interval.
|
||
Attempts int
|
||
|
||
// Interval is a duration in which we can limit the number of restarts
|
||
// within.
|
||
Interval time.Duration
|
||
|
||
// Delay is the time between a failure and a restart.
|
||
Delay time.Duration
|
||
|
||
// Mode controls what happens when the task restarts more than attempt times
|
||
// in an interval.
|
||
Mode string
|
||
}
|
||
|
||
func (r *RestartPolicy) Copy() *RestartPolicy {
|
||
if r == nil {
|
||
return nil
|
||
}
|
||
nrp := new(RestartPolicy)
|
||
*nrp = *r
|
||
return nrp
|
||
}
|
||
|
||
func (r *RestartPolicy) Validate() error {
|
||
var mErr multierror.Error
|
||
switch r.Mode {
|
||
case RestartPolicyModeDelay, RestartPolicyModeFail:
|
||
default:
|
||
multierror.Append(&mErr, fmt.Errorf("Unsupported restart mode: %q", r.Mode))
|
||
}
|
||
|
||
// Check for ambiguous/confusing settings
|
||
if r.Attempts == 0 && r.Mode != RestartPolicyModeFail {
|
||
multierror.Append(&mErr, fmt.Errorf("Restart policy %q with %d attempts is ambiguous", r.Mode, r.Attempts))
|
||
}
|
||
|
||
if r.Interval.Nanoseconds() < RestartPolicyMinInterval.Nanoseconds() {
|
||
multierror.Append(&mErr, fmt.Errorf("Interval can not be less than %v (got %v)", RestartPolicyMinInterval, r.Interval))
|
||
}
|
||
if time.Duration(r.Attempts)*r.Delay > r.Interval {
|
||
multierror.Append(&mErr,
|
||
fmt.Errorf("Nomad can't restart the TaskGroup %v times in an interval of %v with a delay of %v", r.Attempts, r.Interval, r.Delay))
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func NewRestartPolicy(jobType string) *RestartPolicy {
|
||
switch jobType {
|
||
case JobTypeService, JobTypeSystem:
|
||
rp := DefaultServiceJobRestartPolicy
|
||
return &rp
|
||
case JobTypeBatch:
|
||
rp := DefaultBatchJobRestartPolicy
|
||
return &rp
|
||
}
|
||
return nil
|
||
}
|
||
|
||
const ReschedulePolicyMinInterval = 15 * time.Second
|
||
const ReschedulePolicyMinDelay = 5 * time.Second
|
||
|
||
var RescheduleDelayFunctions = [...]string{"constant", "exponential", "fibonacci"}
|
||
|
||
// ReschedulePolicy configures how Tasks are rescheduled when they crash or fail.
|
||
type ReschedulePolicy struct {
|
||
// Attempts limits the number of rescheduling attempts that can occur in an interval.
|
||
Attempts int
|
||
|
||
// Interval is a duration in which we can limit the number of reschedule attempts.
|
||
Interval time.Duration
|
||
|
||
// Delay is a minimum duration to wait between reschedule attempts.
|
||
// The delay function determines how much subsequent reschedule attempts are delayed by.
|
||
Delay time.Duration
|
||
|
||
// DelayFunction determines how the delay progressively changes on subsequent reschedule
|
||
// attempts. Valid values are "exponential", "constant", and "fibonacci".
|
||
DelayFunction string
|
||
|
||
// MaxDelay is an upper bound on the delay.
|
||
MaxDelay time.Duration
|
||
|
||
// Unlimited allows infinite rescheduling attempts. Only allowed when delay is set
|
||
// between reschedule attempts.
|
||
Unlimited bool
|
||
}
|
||
|
||
func (r *ReschedulePolicy) Copy() *ReschedulePolicy {
|
||
if r == nil {
|
||
return nil
|
||
}
|
||
nrp := new(ReschedulePolicy)
|
||
*nrp = *r
|
||
return nrp
|
||
}
|
||
|
||
func (r *ReschedulePolicy) Enabled() bool {
|
||
enabled := r != nil && (r.Attempts > 0 || r.Unlimited)
|
||
return enabled
|
||
}
|
||
|
||
// Validate uses different criteria to validate the reschedule policy
|
||
// Delay must be a minimum of 5 seconds
|
||
// Delay Ceiling is ignored if Delay Function is "constant"
|
||
// Number of possible attempts is validated, given the interval, delay and delay function
|
||
func (r *ReschedulePolicy) Validate() error {
|
||
if !r.Enabled() {
|
||
return nil
|
||
}
|
||
var mErr multierror.Error
|
||
// Check for ambiguous/confusing settings
|
||
if r.Attempts > 0 {
|
||
if r.Interval <= 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Interval must be a non zero value if Attempts > 0"))
|
||
}
|
||
if r.Unlimited {
|
||
multierror.Append(&mErr, fmt.Errorf("Reschedule Policy with Attempts = %v, Interval = %v, "+
|
||
"and Unlimited = %v is ambiguous", r.Attempts, r.Interval, r.Unlimited))
|
||
multierror.Append(&mErr, errors.New("If Attempts >0, Unlimited cannot also be set to true"))
|
||
}
|
||
}
|
||
|
||
delayPreCheck := true
|
||
// Delay should be bigger than the default
|
||
if r.Delay.Nanoseconds() < ReschedulePolicyMinDelay.Nanoseconds() {
|
||
multierror.Append(&mErr, fmt.Errorf("Delay cannot be less than %v (got %v)", ReschedulePolicyMinDelay, r.Delay))
|
||
delayPreCheck = false
|
||
}
|
||
|
||
// Must use a valid delay function
|
||
if !isValidDelayFunction(r.DelayFunction) {
|
||
multierror.Append(&mErr, fmt.Errorf("Invalid delay function %q, must be one of %q", r.DelayFunction, RescheduleDelayFunctions))
|
||
delayPreCheck = false
|
||
}
|
||
|
||
// Validate MaxDelay if not using linear delay progression
|
||
if r.DelayFunction != "constant" {
|
||
if r.MaxDelay.Nanoseconds() < ReschedulePolicyMinDelay.Nanoseconds() {
|
||
multierror.Append(&mErr, fmt.Errorf("Max Delay cannot be less than %v (got %v)", ReschedulePolicyMinDelay, r.Delay))
|
||
delayPreCheck = false
|
||
}
|
||
if r.MaxDelay < r.Delay {
|
||
multierror.Append(&mErr, fmt.Errorf("Max Delay cannot be less than Delay %v (got %v)", r.Delay, r.MaxDelay))
|
||
delayPreCheck = false
|
||
}
|
||
|
||
}
|
||
|
||
// Validate Interval and other delay parameters if attempts are limited
|
||
if !r.Unlimited {
|
||
if r.Interval.Nanoseconds() < ReschedulePolicyMinInterval.Nanoseconds() {
|
||
multierror.Append(&mErr, fmt.Errorf("Interval cannot be less than %v (got %v)", ReschedulePolicyMinInterval, r.Interval))
|
||
}
|
||
if !delayPreCheck {
|
||
// We can't cross validate the rest of the delay params if delayPreCheck fails, so return early
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
crossValidationErr := r.validateDelayParams()
|
||
if crossValidationErr != nil {
|
||
multierror.Append(&mErr, crossValidationErr)
|
||
}
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func isValidDelayFunction(delayFunc string) bool {
|
||
for _, value := range RescheduleDelayFunctions {
|
||
if value == delayFunc {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func (r *ReschedulePolicy) validateDelayParams() error {
|
||
ok, possibleAttempts, recommendedInterval := r.viableAttempts()
|
||
if ok {
|
||
return nil
|
||
}
|
||
var mErr multierror.Error
|
||
if r.DelayFunction == "constant" {
|
||
multierror.Append(&mErr, fmt.Errorf("Nomad can only make %v attempts in %v with initial delay %v and "+
|
||
"delay function %q", possibleAttempts, r.Interval, r.Delay, r.DelayFunction))
|
||
} else {
|
||
multierror.Append(&mErr, fmt.Errorf("Nomad can only make %v attempts in %v with initial delay %v, "+
|
||
"delay function %q, and delay ceiling %v", possibleAttempts, r.Interval, r.Delay, r.DelayFunction, r.MaxDelay))
|
||
}
|
||
multierror.Append(&mErr, fmt.Errorf("Set the interval to at least %v to accommodate %v attempts", recommendedInterval.Round(time.Second), r.Attempts))
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func (r *ReschedulePolicy) viableAttempts() (bool, int, time.Duration) {
|
||
var possibleAttempts int
|
||
var recommendedInterval time.Duration
|
||
valid := true
|
||
switch r.DelayFunction {
|
||
case "constant":
|
||
recommendedInterval = time.Duration(r.Attempts) * r.Delay
|
||
if r.Interval < recommendedInterval {
|
||
possibleAttempts = int(r.Interval / r.Delay)
|
||
valid = false
|
||
}
|
||
case "exponential":
|
||
for i := 0; i < r.Attempts; i++ {
|
||
nextDelay := time.Duration(math.Pow(2, float64(i))) * r.Delay
|
||
if nextDelay > r.MaxDelay {
|
||
nextDelay = r.MaxDelay
|
||
recommendedInterval += nextDelay
|
||
} else {
|
||
recommendedInterval = nextDelay
|
||
}
|
||
if recommendedInterval < r.Interval {
|
||
possibleAttempts++
|
||
}
|
||
}
|
||
if possibleAttempts < r.Attempts {
|
||
valid = false
|
||
}
|
||
case "fibonacci":
|
||
var slots []time.Duration
|
||
slots = append(slots, r.Delay)
|
||
slots = append(slots, r.Delay)
|
||
reachedCeiling := false
|
||
for i := 2; i < r.Attempts; i++ {
|
||
var nextDelay time.Duration
|
||
if reachedCeiling {
|
||
//switch to linear
|
||
nextDelay = slots[i-1] + r.MaxDelay
|
||
} else {
|
||
nextDelay = slots[i-1] + slots[i-2]
|
||
if nextDelay > r.MaxDelay {
|
||
nextDelay = r.MaxDelay
|
||
reachedCeiling = true
|
||
}
|
||
}
|
||
slots = append(slots, nextDelay)
|
||
}
|
||
recommendedInterval = slots[len(slots)-1]
|
||
if r.Interval < recommendedInterval {
|
||
valid = false
|
||
// calculate possible attempts
|
||
for i := 0; i < len(slots); i++ {
|
||
if slots[i] > r.Interval {
|
||
possibleAttempts = i
|
||
break
|
||
}
|
||
}
|
||
}
|
||
default:
|
||
return false, 0, 0
|
||
}
|
||
if possibleAttempts < 0 { // can happen if delay is bigger than interval
|
||
possibleAttempts = 0
|
||
}
|
||
return valid, possibleAttempts, recommendedInterval
|
||
}
|
||
|
||
func NewReschedulePolicy(jobType string) *ReschedulePolicy {
|
||
switch jobType {
|
||
case JobTypeService:
|
||
rp := DefaultServiceJobReschedulePolicy
|
||
return &rp
|
||
case JobTypeBatch:
|
||
rp := DefaultBatchJobReschedulePolicy
|
||
return &rp
|
||
}
|
||
return nil
|
||
}
|
||
|
||
const (
|
||
MigrateStrategyHealthChecks = "checks"
|
||
MigrateStrategyHealthStates = "task_states"
|
||
)
|
||
|
||
type MigrateStrategy struct {
|
||
MaxParallel int
|
||
HealthCheck string
|
||
MinHealthyTime time.Duration
|
||
HealthyDeadline time.Duration
|
||
}
|
||
|
||
// DefaultMigrateStrategy is used for backwards compat with pre-0.8 Allocations
|
||
// that lack an update strategy.
|
||
//
|
||
// This function should match its counterpart in api/tasks.go
|
||
func DefaultMigrateStrategy() *MigrateStrategy {
|
||
return &MigrateStrategy{
|
||
MaxParallel: 1,
|
||
HealthCheck: MigrateStrategyHealthChecks,
|
||
MinHealthyTime: 10 * time.Second,
|
||
HealthyDeadline: 5 * time.Minute,
|
||
}
|
||
}
|
||
|
||
func (m *MigrateStrategy) Validate() error {
|
||
var mErr multierror.Error
|
||
|
||
if m.MaxParallel < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("MaxParallel must be >= 0 but found %d", m.MaxParallel))
|
||
}
|
||
|
||
switch m.HealthCheck {
|
||
case MigrateStrategyHealthChecks, MigrateStrategyHealthStates:
|
||
// ok
|
||
case "":
|
||
if m.MaxParallel > 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Missing HealthCheck"))
|
||
}
|
||
default:
|
||
multierror.Append(&mErr, fmt.Errorf("Invalid HealthCheck: %q", m.HealthCheck))
|
||
}
|
||
|
||
if m.MinHealthyTime < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("MinHealthyTime is %s and must be >= 0", m.MinHealthyTime))
|
||
}
|
||
|
||
if m.HealthyDeadline < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("HealthyDeadline is %s and must be >= 0", m.HealthyDeadline))
|
||
}
|
||
|
||
if m.MinHealthyTime > m.HealthyDeadline {
|
||
multierror.Append(&mErr, fmt.Errorf("MinHealthyTime must be less than HealthyDeadline"))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// TaskGroup is an atomic unit of placement. Each task group belongs to
|
||
// a job and may contain any number of tasks. A task group support running
|
||
// in many replicas using the same configuration..
|
||
type TaskGroup struct {
|
||
// Name of the task group
|
||
Name string
|
||
|
||
// Count is the number of replicas of this task group that should
|
||
// be scheduled.
|
||
Count int
|
||
|
||
// Update is used to control the update strategy for this task group
|
||
Update *UpdateStrategy
|
||
|
||
// Migrate is used to control the migration strategy for this task group
|
||
Migrate *MigrateStrategy
|
||
|
||
// Constraints can be specified at a task group level and apply to
|
||
// all the tasks contained.
|
||
Constraints []*Constraint
|
||
|
||
//RestartPolicy of a TaskGroup
|
||
RestartPolicy *RestartPolicy
|
||
|
||
// Tasks are the collection of tasks that this task group needs to run
|
||
Tasks []*Task
|
||
|
||
// EphemeralDisk is the disk resources that the task group requests
|
||
EphemeralDisk *EphemeralDisk
|
||
|
||
// Meta is used to associate arbitrary metadata with this
|
||
// task group. This is opaque to Nomad.
|
||
Meta map[string]string
|
||
|
||
// ReschedulePolicy is used to configure how the scheduler should
|
||
// retry failed allocations.
|
||
ReschedulePolicy *ReschedulePolicy
|
||
|
||
// Affinities can be specified at the task group level to express
|
||
// scheduling preferences.
|
||
Affinities []*Affinity
|
||
|
||
// Spread can be specified at the task group level to express spreading
|
||
// allocations across a desired attribute, such as datacenter
|
||
Spreads []*Spread
|
||
}
|
||
|
||
func (tg *TaskGroup) Copy() *TaskGroup {
|
||
if tg == nil {
|
||
return nil
|
||
}
|
||
ntg := new(TaskGroup)
|
||
*ntg = *tg
|
||
ntg.Update = ntg.Update.Copy()
|
||
ntg.Constraints = CopySliceConstraints(ntg.Constraints)
|
||
ntg.RestartPolicy = ntg.RestartPolicy.Copy()
|
||
ntg.ReschedulePolicy = ntg.ReschedulePolicy.Copy()
|
||
ntg.Affinities = CopySliceAffinities(ntg.Affinities)
|
||
ntg.Spreads = CopySliceSpreads(ntg.Spreads)
|
||
|
||
if tg.Tasks != nil {
|
||
tasks := make([]*Task, len(ntg.Tasks))
|
||
for i, t := range ntg.Tasks {
|
||
tasks[i] = t.Copy()
|
||
}
|
||
ntg.Tasks = tasks
|
||
}
|
||
|
||
ntg.Meta = helper.CopyMapStringString(ntg.Meta)
|
||
|
||
if tg.EphemeralDisk != nil {
|
||
ntg.EphemeralDisk = tg.EphemeralDisk.Copy()
|
||
}
|
||
return ntg
|
||
}
|
||
|
||
// Canonicalize is used to canonicalize fields in the TaskGroup.
|
||
func (tg *TaskGroup) Canonicalize(job *Job) {
|
||
// Ensure that an empty and nil map are treated the same to avoid scheduling
|
||
// problems since we use reflect DeepEquals.
|
||
if len(tg.Meta) == 0 {
|
||
tg.Meta = nil
|
||
}
|
||
|
||
// Set the default restart policy.
|
||
if tg.RestartPolicy == nil {
|
||
tg.RestartPolicy = NewRestartPolicy(job.Type)
|
||
}
|
||
|
||
if tg.ReschedulePolicy == nil {
|
||
tg.ReschedulePolicy = NewReschedulePolicy(job.Type)
|
||
}
|
||
|
||
// Canonicalize Migrate for service jobs
|
||
if job.Type == JobTypeService && tg.Migrate == nil {
|
||
tg.Migrate = DefaultMigrateStrategy()
|
||
}
|
||
|
||
// Set a default ephemeral disk object if the user has not requested for one
|
||
if tg.EphemeralDisk == nil {
|
||
tg.EphemeralDisk = DefaultEphemeralDisk()
|
||
}
|
||
|
||
for _, task := range tg.Tasks {
|
||
task.Canonicalize(job, tg)
|
||
}
|
||
}
|
||
|
||
// Validate is used to sanity check a task group
|
||
func (tg *TaskGroup) Validate(j *Job) error {
|
||
var mErr multierror.Error
|
||
if tg.Name == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing task group name"))
|
||
}
|
||
if tg.Count < 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Task group count can't be negative"))
|
||
}
|
||
if len(tg.Tasks) == 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing tasks for task group"))
|
||
}
|
||
for idx, constr := range tg.Constraints {
|
||
if err := constr.Validate(); err != nil {
|
||
outer := fmt.Errorf("Constraint %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
if j.Type == JobTypeSystem {
|
||
if tg.Affinities != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("System jobs may not have an affinity stanza"))
|
||
}
|
||
} else {
|
||
for idx, affinity := range tg.Affinities {
|
||
if err := affinity.Validate(); err != nil {
|
||
outer := fmt.Errorf("Affinity %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
}
|
||
|
||
if tg.RestartPolicy != nil {
|
||
if err := tg.RestartPolicy.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
} else {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Task Group %v should have a restart policy", tg.Name))
|
||
}
|
||
|
||
if j.Type == JobTypeSystem {
|
||
if tg.Spreads != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("System jobs may not have a spread stanza"))
|
||
}
|
||
} else {
|
||
for idx, spread := range tg.Spreads {
|
||
if err := spread.Validate(); err != nil {
|
||
outer := fmt.Errorf("Spread %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
}
|
||
|
||
if j.Type == JobTypeSystem {
|
||
if tg.ReschedulePolicy != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("System jobs should not have a reschedule policy"))
|
||
}
|
||
} else {
|
||
if tg.ReschedulePolicy != nil {
|
||
if err := tg.ReschedulePolicy.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
} else {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Task Group %v should have a reschedule policy", tg.Name))
|
||
}
|
||
}
|
||
|
||
if tg.EphemeralDisk != nil {
|
||
if err := tg.EphemeralDisk.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
} else {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Task Group %v should have an ephemeral disk object", tg.Name))
|
||
}
|
||
|
||
// Validate the update strategy
|
||
if u := tg.Update; u != nil {
|
||
switch j.Type {
|
||
case JobTypeService, JobTypeSystem:
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Job type %q does not allow update block", j.Type))
|
||
}
|
||
if err := u.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
}
|
||
|
||
// Validate the migration strategy
|
||
switch j.Type {
|
||
case JobTypeService:
|
||
if tg.Migrate != nil {
|
||
if err := tg.Migrate.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
}
|
||
default:
|
||
if tg.Migrate != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Job type %q does not allow migrate block", j.Type))
|
||
}
|
||
}
|
||
|
||
// Check for duplicate tasks, that there is only leader task if any,
|
||
// and no duplicated static ports
|
||
tasks := make(map[string]int)
|
||
staticPorts := make(map[int]string)
|
||
leaderTasks := 0
|
||
for idx, task := range tg.Tasks {
|
||
if task.Name == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Task %d missing name", idx+1))
|
||
} else if existing, ok := tasks[task.Name]; ok {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Task %d redefines '%s' from task %d", idx+1, task.Name, existing+1))
|
||
} else {
|
||
tasks[task.Name] = idx
|
||
}
|
||
|
||
if task.Leader {
|
||
leaderTasks++
|
||
}
|
||
|
||
if task.Resources == nil {
|
||
continue
|
||
}
|
||
|
||
for _, net := range task.Resources.Networks {
|
||
for _, port := range net.ReservedPorts {
|
||
if other, ok := staticPorts[port.Value]; ok {
|
||
err := fmt.Errorf("Static port %d already reserved by %s", port.Value, other)
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
} else {
|
||
staticPorts[port.Value] = fmt.Sprintf("%s:%s", task.Name, port.Label)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if leaderTasks > 1 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Only one task may be marked as leader"))
|
||
}
|
||
|
||
// Validate the tasks
|
||
for _, task := range tg.Tasks {
|
||
if err := task.Validate(tg.EphemeralDisk, j.Type); err != nil {
|
||
outer := fmt.Errorf("Task %s validation failed: %v", task.Name, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Warnings returns a list of warnings that may be from dubious settings or
|
||
// deprecation warnings.
|
||
func (tg *TaskGroup) Warnings(j *Job) error {
|
||
var mErr multierror.Error
|
||
|
||
// Validate the update strategy
|
||
if u := tg.Update; u != nil {
|
||
// Check the counts are appropriate
|
||
if u.MaxParallel > tg.Count {
|
||
mErr.Errors = append(mErr.Errors,
|
||
fmt.Errorf("Update max parallel count is greater than task group count (%d > %d). "+
|
||
"A destructive change would result in the simultaneous replacement of all allocations.", u.MaxParallel, tg.Count))
|
||
}
|
||
}
|
||
|
||
for _, t := range tg.Tasks {
|
||
if err := t.Warnings(); err != nil {
|
||
err = multierror.Prefix(err, fmt.Sprintf("Task %q:", t.Name))
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// LookupTask finds a task by name
|
||
func (tg *TaskGroup) LookupTask(name string) *Task {
|
||
for _, t := range tg.Tasks {
|
||
if t.Name == name {
|
||
return t
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func (tg *TaskGroup) GoString() string {
|
||
return fmt.Sprintf("*%#v", *tg)
|
||
}
|
||
|
||
// CheckRestart describes if and when a task should be restarted based on
|
||
// failing health checks.
|
||
type CheckRestart struct {
|
||
Limit int // Restart task after this many unhealthy intervals
|
||
Grace time.Duration // Grace time to give tasks after starting to get healthy
|
||
IgnoreWarnings bool // If true treat checks in `warning` as passing
|
||
}
|
||
|
||
func (c *CheckRestart) Copy() *CheckRestart {
|
||
if c == nil {
|
||
return nil
|
||
}
|
||
|
||
nc := new(CheckRestart)
|
||
*nc = *c
|
||
return nc
|
||
}
|
||
|
||
func (c *CheckRestart) Validate() error {
|
||
if c == nil {
|
||
return nil
|
||
}
|
||
|
||
var mErr multierror.Error
|
||
if c.Limit < 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("limit must be greater than or equal to 0 but found %d", c.Limit))
|
||
}
|
||
|
||
if c.Grace < 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("grace period must be greater than or equal to 0 but found %d", c.Grace))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
const (
|
||
ServiceCheckHTTP = "http"
|
||
ServiceCheckTCP = "tcp"
|
||
ServiceCheckScript = "script"
|
||
ServiceCheckGRPC = "grpc"
|
||
|
||
// minCheckInterval is the minimum check interval permitted. Consul
|
||
// currently has its MinInterval set to 1s. Mirror that here for
|
||
// consistency.
|
||
minCheckInterval = 1 * time.Second
|
||
|
||
// minCheckTimeout is the minimum check timeout permitted for Consul
|
||
// script TTL checks.
|
||
minCheckTimeout = 1 * time.Second
|
||
)
|
||
|
||
// The ServiceCheck data model represents the consul health check that
|
||
// Nomad registers for a Task
|
||
type ServiceCheck struct {
|
||
Name string // Name of the check, defaults to id
|
||
Type string // Type of the check - tcp, http, docker and script
|
||
Command string // Command is the command to run for script checks
|
||
Args []string // Args is a list of arguments for script checks
|
||
Path string // path of the health check url for http type check
|
||
Protocol string // Protocol to use if check is http, defaults to http
|
||
PortLabel string // The port to use for tcp/http checks
|
||
AddressMode string // 'host' to use host ip:port or 'driver' to use driver's
|
||
Interval time.Duration // Interval of the check
|
||
Timeout time.Duration // Timeout of the response from the check before consul fails the check
|
||
InitialStatus string // Initial status of the check
|
||
TLSSkipVerify bool // Skip TLS verification when Protocol=https
|
||
Method string // HTTP Method to use (GET by default)
|
||
Header map[string][]string // HTTP Headers for Consul to set when making HTTP checks
|
||
CheckRestart *CheckRestart // If and when a task should be restarted based on checks
|
||
GRPCService string // Service for GRPC checks
|
||
GRPCUseTLS bool // Whether or not to use TLS for GRPC checks
|
||
}
|
||
|
||
func (sc *ServiceCheck) Copy() *ServiceCheck {
|
||
if sc == nil {
|
||
return nil
|
||
}
|
||
nsc := new(ServiceCheck)
|
||
*nsc = *sc
|
||
nsc.Args = helper.CopySliceString(sc.Args)
|
||
nsc.Header = helper.CopyMapStringSliceString(sc.Header)
|
||
nsc.CheckRestart = sc.CheckRestart.Copy()
|
||
return nsc
|
||
}
|
||
|
||
func (sc *ServiceCheck) Canonicalize(serviceName string) {
|
||
// Ensure empty maps/slices are treated as null to avoid scheduling
|
||
// issues when using DeepEquals.
|
||
if len(sc.Args) == 0 {
|
||
sc.Args = nil
|
||
}
|
||
|
||
if len(sc.Header) == 0 {
|
||
sc.Header = nil
|
||
} else {
|
||
for k, v := range sc.Header {
|
||
if len(v) == 0 {
|
||
sc.Header[k] = nil
|
||
}
|
||
}
|
||
}
|
||
|
||
if sc.Name == "" {
|
||
sc.Name = fmt.Sprintf("service: %q check", serviceName)
|
||
}
|
||
}
|
||
|
||
// validate a Service's ServiceCheck
|
||
func (sc *ServiceCheck) validate() error {
|
||
// Validate Type
|
||
switch strings.ToLower(sc.Type) {
|
||
case ServiceCheckGRPC:
|
||
case ServiceCheckTCP:
|
||
case ServiceCheckHTTP:
|
||
if sc.Path == "" {
|
||
return fmt.Errorf("http type must have a valid http path")
|
||
}
|
||
url, err := url.Parse(sc.Path)
|
||
if err != nil {
|
||
return fmt.Errorf("http type must have a valid http path")
|
||
}
|
||
if url.IsAbs() {
|
||
return fmt.Errorf("http type must have a relative http path")
|
||
}
|
||
|
||
case ServiceCheckScript:
|
||
if sc.Command == "" {
|
||
return fmt.Errorf("script type must have a valid script path")
|
||
}
|
||
|
||
default:
|
||
return fmt.Errorf(`invalid type (%+q), must be one of "http", "tcp", or "script" type`, sc.Type)
|
||
}
|
||
|
||
// Validate interval and timeout
|
||
if sc.Interval == 0 {
|
||
return fmt.Errorf("missing required value interval. Interval cannot be less than %v", minCheckInterval)
|
||
} else if sc.Interval < minCheckInterval {
|
||
return fmt.Errorf("interval (%v) cannot be lower than %v", sc.Interval, minCheckInterval)
|
||
}
|
||
|
||
if sc.Timeout == 0 {
|
||
return fmt.Errorf("missing required value timeout. Timeout cannot be less than %v", minCheckInterval)
|
||
} else if sc.Timeout < minCheckTimeout {
|
||
return fmt.Errorf("timeout (%v) is lower than required minimum timeout %v", sc.Timeout, minCheckInterval)
|
||
}
|
||
|
||
// Validate InitialStatus
|
||
switch sc.InitialStatus {
|
||
case "":
|
||
case api.HealthPassing:
|
||
case api.HealthWarning:
|
||
case api.HealthCritical:
|
||
default:
|
||
return fmt.Errorf(`invalid initial check state (%s), must be one of %q, %q, %q or empty`, sc.InitialStatus, api.HealthPassing, api.HealthWarning, api.HealthCritical)
|
||
|
||
}
|
||
|
||
// Validate AddressMode
|
||
switch sc.AddressMode {
|
||
case "", AddressModeHost, AddressModeDriver:
|
||
// Ok
|
||
case AddressModeAuto:
|
||
return fmt.Errorf("invalid address_mode %q - %s only valid for services", sc.AddressMode, AddressModeAuto)
|
||
default:
|
||
return fmt.Errorf("invalid address_mode %q", sc.AddressMode)
|
||
}
|
||
|
||
return sc.CheckRestart.Validate()
|
||
}
|
||
|
||
// RequiresPort returns whether the service check requires the task has a port.
|
||
func (sc *ServiceCheck) RequiresPort() bool {
|
||
switch sc.Type {
|
||
case ServiceCheckGRPC, ServiceCheckHTTP, ServiceCheckTCP:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// TriggersRestarts returns true if this check should be watched and trigger a restart
|
||
// on failure.
|
||
func (sc *ServiceCheck) TriggersRestarts() bool {
|
||
return sc.CheckRestart != nil && sc.CheckRestart.Limit > 0
|
||
}
|
||
|
||
// Hash all ServiceCheck fields and the check's corresponding service ID to
|
||
// create an identifier. The identifier is not guaranteed to be unique as if
|
||
// the PortLabel is blank, the Service's PortLabel will be used after Hash is
|
||
// called.
|
||
func (sc *ServiceCheck) Hash(serviceID string) string {
|
||
h := sha1.New()
|
||
io.WriteString(h, serviceID)
|
||
io.WriteString(h, sc.Name)
|
||
io.WriteString(h, sc.Type)
|
||
io.WriteString(h, sc.Command)
|
||
io.WriteString(h, strings.Join(sc.Args, ""))
|
||
io.WriteString(h, sc.Path)
|
||
io.WriteString(h, sc.Protocol)
|
||
io.WriteString(h, sc.PortLabel)
|
||
io.WriteString(h, sc.Interval.String())
|
||
io.WriteString(h, sc.Timeout.String())
|
||
io.WriteString(h, sc.Method)
|
||
// Only include TLSSkipVerify if set to maintain ID stability with Nomad <0.6
|
||
if sc.TLSSkipVerify {
|
||
io.WriteString(h, "true")
|
||
}
|
||
|
||
// Since map iteration order isn't stable we need to write k/v pairs to
|
||
// a slice and sort it before hashing.
|
||
if len(sc.Header) > 0 {
|
||
headers := make([]string, 0, len(sc.Header))
|
||
for k, v := range sc.Header {
|
||
headers = append(headers, k+strings.Join(v, ""))
|
||
}
|
||
sort.Strings(headers)
|
||
io.WriteString(h, strings.Join(headers, ""))
|
||
}
|
||
|
||
// Only include AddressMode if set to maintain ID stability with Nomad <0.7.1
|
||
if len(sc.AddressMode) > 0 {
|
||
io.WriteString(h, sc.AddressMode)
|
||
}
|
||
|
||
// Only include GRPC if set to maintain ID stability with Nomad <0.8.4
|
||
if sc.GRPCService != "" {
|
||
io.WriteString(h, sc.GRPCService)
|
||
}
|
||
if sc.GRPCUseTLS {
|
||
io.WriteString(h, "true")
|
||
}
|
||
|
||
return fmt.Sprintf("%x", h.Sum(nil))
|
||
}
|
||
|
||
const (
|
||
AddressModeAuto = "auto"
|
||
AddressModeHost = "host"
|
||
AddressModeDriver = "driver"
|
||
)
|
||
|
||
// Service represents a Consul service definition in Nomad
|
||
type Service struct {
|
||
// Name of the service registered with Consul. Consul defaults the
|
||
// Name to ServiceID if not specified. The Name if specified is used
|
||
// as one of the seed values when generating a Consul ServiceID.
|
||
Name string
|
||
|
||
// PortLabel is either the numeric port number or the `host:port`.
|
||
// To specify the port number using the host's Consul Advertise
|
||
// address, specify an empty host in the PortLabel (e.g. `:port`).
|
||
PortLabel string
|
||
|
||
// AddressMode specifies whether or not to use the host ip:port for
|
||
// this service.
|
||
AddressMode string
|
||
|
||
Tags []string // List of tags for the service
|
||
CanaryTags []string // List of tags for the service when it is a canary
|
||
Checks []*ServiceCheck // List of checks associated with the service
|
||
}
|
||
|
||
func (s *Service) Copy() *Service {
|
||
if s == nil {
|
||
return nil
|
||
}
|
||
ns := new(Service)
|
||
*ns = *s
|
||
ns.Tags = helper.CopySliceString(ns.Tags)
|
||
ns.CanaryTags = helper.CopySliceString(ns.CanaryTags)
|
||
|
||
if s.Checks != nil {
|
||
checks := make([]*ServiceCheck, len(ns.Checks))
|
||
for i, c := range ns.Checks {
|
||
checks[i] = c.Copy()
|
||
}
|
||
ns.Checks = checks
|
||
}
|
||
|
||
return ns
|
||
}
|
||
|
||
// Canonicalize interpolates values of Job, Task Group and Task in the Service
|
||
// Name. This also generates check names, service id and check ids.
|
||
func (s *Service) Canonicalize(job string, taskGroup string, task string) {
|
||
// Ensure empty lists are treated as null to avoid scheduler issues when
|
||
// using DeepEquals
|
||
if len(s.Tags) == 0 {
|
||
s.Tags = nil
|
||
}
|
||
if len(s.CanaryTags) == 0 {
|
||
s.CanaryTags = nil
|
||
}
|
||
if len(s.Checks) == 0 {
|
||
s.Checks = nil
|
||
}
|
||
|
||
s.Name = args.ReplaceEnv(s.Name, map[string]string{
|
||
"JOB": job,
|
||
"TASKGROUP": taskGroup,
|
||
"TASK": task,
|
||
"BASE": fmt.Sprintf("%s-%s-%s", job, taskGroup, task),
|
||
},
|
||
)
|
||
|
||
for _, check := range s.Checks {
|
||
check.Canonicalize(s.Name)
|
||
}
|
||
}
|
||
|
||
// Validate checks if the Check definition is valid
|
||
func (s *Service) Validate() error {
|
||
var mErr multierror.Error
|
||
|
||
// Ensure the service name is valid per the below RFCs but make an exception
|
||
// for our interpolation syntax by first stripping any environment variables from the name
|
||
|
||
serviceNameStripped := args.ReplaceEnvWithPlaceHolder(s.Name, "ENV-VAR")
|
||
|
||
if err := s.ValidateName(serviceNameStripped); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("service name must be valid per RFC 1123 and can contain only alphanumeric characters or dashes: %q", s.Name))
|
||
}
|
||
|
||
switch s.AddressMode {
|
||
case "", AddressModeAuto, AddressModeHost, AddressModeDriver:
|
||
// OK
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("service address_mode must be %q, %q, or %q; not %q", AddressModeAuto, AddressModeHost, AddressModeDriver, s.AddressMode))
|
||
}
|
||
|
||
for _, c := range s.Checks {
|
||
if s.PortLabel == "" && c.PortLabel == "" && c.RequiresPort() {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("check %s invalid: check requires a port but neither check nor service %+q have a port", c.Name, s.Name))
|
||
continue
|
||
}
|
||
|
||
if err := c.validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("check %s invalid: %v", c.Name, err))
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// ValidateName checks if the services Name is valid and should be called after
|
||
// the name has been interpolated
|
||
func (s *Service) ValidateName(name string) error {
|
||
// Ensure the service name is valid per RFC-952 §1
|
||
// (https://tools.ietf.org/html/rfc952), RFC-1123 §2.1
|
||
// (https://tools.ietf.org/html/rfc1123), and RFC-2782
|
||
// (https://tools.ietf.org/html/rfc2782).
|
||
re := regexp.MustCompile(`^(?i:[a-z0-9]|[a-z0-9][a-z0-9\-]{0,61}[a-z0-9])$`)
|
||
if !re.MatchString(name) {
|
||
return fmt.Errorf("service name must be valid per RFC 1123 and can contain only alphanumeric characters or dashes and must be no longer than 63 characters: %q", name)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// Hash returns a base32 encoded hash of a Service's contents excluding checks
|
||
// as they're hashed independently.
|
||
func (s *Service) Hash(allocID, taskName string, canary bool) string {
|
||
h := sha1.New()
|
||
io.WriteString(h, allocID)
|
||
io.WriteString(h, taskName)
|
||
io.WriteString(h, s.Name)
|
||
io.WriteString(h, s.PortLabel)
|
||
io.WriteString(h, s.AddressMode)
|
||
for _, tag := range s.Tags {
|
||
io.WriteString(h, tag)
|
||
}
|
||
for _, tag := range s.CanaryTags {
|
||
io.WriteString(h, tag)
|
||
}
|
||
|
||
// Vary ID on whether or not CanaryTags will be used
|
||
if canary {
|
||
h.Write([]byte("Canary"))
|
||
}
|
||
|
||
// Base32 is used for encoding the hash as sha1 hashes can always be
|
||
// encoded without padding, only 4 bytes larger than base64, and saves
|
||
// 8 bytes vs hex. Since these hashes are used in Consul URLs it's nice
|
||
// to have a reasonably compact URL-safe representation.
|
||
return b32.EncodeToString(h.Sum(nil))
|
||
}
|
||
|
||
const (
|
||
// DefaultKillTimeout is the default timeout between signaling a task it
|
||
// will be killed and killing it.
|
||
DefaultKillTimeout = 5 * time.Second
|
||
)
|
||
|
||
// LogConfig provides configuration for log rotation
|
||
type LogConfig struct {
|
||
MaxFiles int
|
||
MaxFileSizeMB int
|
||
}
|
||
|
||
// DefaultLogConfig returns the default LogConfig values.
|
||
func DefaultLogConfig() *LogConfig {
|
||
return &LogConfig{
|
||
MaxFiles: 10,
|
||
MaxFileSizeMB: 10,
|
||
}
|
||
}
|
||
|
||
// Validate returns an error if the log config specified are less than
|
||
// the minimum allowed.
|
||
func (l *LogConfig) Validate() error {
|
||
var mErr multierror.Error
|
||
if l.MaxFiles < 1 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("minimum number of files is 1; got %d", l.MaxFiles))
|
||
}
|
||
if l.MaxFileSizeMB < 1 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("minimum file size is 1MB; got %d", l.MaxFileSizeMB))
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Task is a single process typically that is executed as part of a task group.
|
||
type Task struct {
|
||
// Name of the task
|
||
Name string
|
||
|
||
// Driver is used to control which driver is used
|
||
Driver string
|
||
|
||
// User is used to determine which user will run the task. It defaults to
|
||
// the same user the Nomad client is being run as.
|
||
User string
|
||
|
||
// Config is provided to the driver to initialize
|
||
Config map[string]interface{}
|
||
|
||
// Map of environment variables to be used by the driver
|
||
Env map[string]string
|
||
|
||
// List of service definitions exposed by the Task
|
||
Services []*Service
|
||
|
||
// Vault is used to define the set of Vault policies that this task should
|
||
// have access to.
|
||
Vault *Vault
|
||
|
||
// Templates are the set of templates to be rendered for the task.
|
||
Templates []*Template
|
||
|
||
// Constraints can be specified at a task level and apply only to
|
||
// the particular task.
|
||
Constraints []*Constraint
|
||
|
||
// Affinities can be specified at the task level to express
|
||
// scheduling preferences
|
||
Affinities []*Affinity
|
||
|
||
// Resources is the resources needed by this task
|
||
Resources *Resources
|
||
|
||
// DispatchPayload configures how the task retrieves its input from a dispatch
|
||
DispatchPayload *DispatchPayloadConfig
|
||
|
||
// Meta is used to associate arbitrary metadata with this
|
||
// task. This is opaque to Nomad.
|
||
Meta map[string]string
|
||
|
||
// KillTimeout is the time between signaling a task that it will be
|
||
// killed and killing it.
|
||
KillTimeout time.Duration
|
||
|
||
// LogConfig provides configuration for log rotation
|
||
LogConfig *LogConfig
|
||
|
||
// Artifacts is a list of artifacts to download and extract before running
|
||
// the task.
|
||
Artifacts []*TaskArtifact
|
||
|
||
// Leader marks the task as the leader within the group. When the leader
|
||
// task exits, other tasks will be gracefully terminated.
|
||
Leader bool
|
||
|
||
// ShutdownDelay is the duration of the delay between deregistering a
|
||
// task from Consul and sending it a signal to shutdown. See #2441
|
||
ShutdownDelay time.Duration
|
||
|
||
// The kill signal to use for the task. This is an optional specification,
|
||
|
||
// KillSignal is the kill signal to use for the task. This is an optional
|
||
// specification and defaults to SIGINT
|
||
KillSignal string
|
||
}
|
||
|
||
func (t *Task) Copy() *Task {
|
||
if t == nil {
|
||
return nil
|
||
}
|
||
nt := new(Task)
|
||
*nt = *t
|
||
nt.Env = helper.CopyMapStringString(nt.Env)
|
||
|
||
if t.Services != nil {
|
||
services := make([]*Service, len(nt.Services))
|
||
for i, s := range nt.Services {
|
||
services[i] = s.Copy()
|
||
}
|
||
nt.Services = services
|
||
}
|
||
|
||
nt.Constraints = CopySliceConstraints(nt.Constraints)
|
||
nt.Affinities = CopySliceAffinities(nt.Affinities)
|
||
|
||
nt.Vault = nt.Vault.Copy()
|
||
nt.Resources = nt.Resources.Copy()
|
||
nt.Meta = helper.CopyMapStringString(nt.Meta)
|
||
nt.DispatchPayload = nt.DispatchPayload.Copy()
|
||
|
||
if t.Artifacts != nil {
|
||
artifacts := make([]*TaskArtifact, 0, len(t.Artifacts))
|
||
for _, a := range nt.Artifacts {
|
||
artifacts = append(artifacts, a.Copy())
|
||
}
|
||
nt.Artifacts = artifacts
|
||
}
|
||
|
||
if i, err := copystructure.Copy(nt.Config); err != nil {
|
||
panic(err.Error())
|
||
} else {
|
||
nt.Config = i.(map[string]interface{})
|
||
}
|
||
|
||
if t.Templates != nil {
|
||
templates := make([]*Template, len(t.Templates))
|
||
for i, tmpl := range nt.Templates {
|
||
templates[i] = tmpl.Copy()
|
||
}
|
||
nt.Templates = templates
|
||
}
|
||
|
||
return nt
|
||
}
|
||
|
||
// Canonicalize canonicalizes fields in the task.
|
||
func (t *Task) Canonicalize(job *Job, tg *TaskGroup) {
|
||
// Ensure that an empty and nil map are treated the same to avoid scheduling
|
||
// problems since we use reflect DeepEquals.
|
||
if len(t.Meta) == 0 {
|
||
t.Meta = nil
|
||
}
|
||
if len(t.Config) == 0 {
|
||
t.Config = nil
|
||
}
|
||
if len(t.Env) == 0 {
|
||
t.Env = nil
|
||
}
|
||
|
||
for _, service := range t.Services {
|
||
service.Canonicalize(job.Name, tg.Name, t.Name)
|
||
}
|
||
|
||
// If Resources are nil initialize them to defaults, otherwise canonicalize
|
||
if t.Resources == nil {
|
||
t.Resources = DefaultResources()
|
||
} else {
|
||
t.Resources.Canonicalize()
|
||
}
|
||
|
||
// Set the default timeout if it is not specified.
|
||
if t.KillTimeout == 0 {
|
||
t.KillTimeout = DefaultKillTimeout
|
||
}
|
||
|
||
if t.Vault != nil {
|
||
t.Vault.Canonicalize()
|
||
}
|
||
|
||
for _, template := range t.Templates {
|
||
template.Canonicalize()
|
||
}
|
||
}
|
||
|
||
func (t *Task) GoString() string {
|
||
return fmt.Sprintf("*%#v", *t)
|
||
}
|
||
|
||
// Validate is used to sanity check a task
|
||
func (t *Task) Validate(ephemeralDisk *EphemeralDisk, jobType string) error {
|
||
var mErr multierror.Error
|
||
if t.Name == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing task name"))
|
||
}
|
||
if strings.ContainsAny(t.Name, `/\`) {
|
||
// We enforce this so that when creating the directory on disk it will
|
||
// not have any slashes.
|
||
mErr.Errors = append(mErr.Errors, errors.New("Task name cannot include slashes"))
|
||
}
|
||
if t.Driver == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing task driver"))
|
||
}
|
||
if t.KillTimeout < 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("KillTimeout must be a positive value"))
|
||
}
|
||
if t.ShutdownDelay < 0 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("ShutdownDelay must be a positive value"))
|
||
}
|
||
|
||
// Validate the resources.
|
||
if t.Resources == nil {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing task resources"))
|
||
} else if err := t.Resources.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
|
||
// Validate the log config
|
||
if t.LogConfig == nil {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing Log Config"))
|
||
} else if err := t.LogConfig.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
|
||
for idx, constr := range t.Constraints {
|
||
if err := constr.Validate(); err != nil {
|
||
outer := fmt.Errorf("Constraint %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
|
||
switch constr.Operand {
|
||
case ConstraintDistinctHosts, ConstraintDistinctProperty:
|
||
outer := fmt.Errorf("Constraint %d has disallowed Operand at task level: %s", idx+1, constr.Operand)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
|
||
if jobType == JobTypeSystem {
|
||
if t.Affinities != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("System jobs may not have an affinity stanza"))
|
||
}
|
||
} else {
|
||
for idx, affinity := range t.Affinities {
|
||
if err := affinity.Validate(); err != nil {
|
||
outer := fmt.Errorf("Affinity %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
}
|
||
|
||
// Validate Services
|
||
if err := validateServices(t); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
|
||
if t.LogConfig != nil && ephemeralDisk != nil {
|
||
logUsage := (t.LogConfig.MaxFiles * t.LogConfig.MaxFileSizeMB)
|
||
if ephemeralDisk.SizeMB <= logUsage {
|
||
mErr.Errors = append(mErr.Errors,
|
||
fmt.Errorf("log storage (%d MB) must be less than requested disk capacity (%d MB)",
|
||
logUsage, ephemeralDisk.SizeMB))
|
||
}
|
||
}
|
||
|
||
for idx, artifact := range t.Artifacts {
|
||
if err := artifact.Validate(); err != nil {
|
||
outer := fmt.Errorf("Artifact %d validation failed: %v", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
}
|
||
|
||
if t.Vault != nil {
|
||
if err := t.Vault.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Vault validation failed: %v", err))
|
||
}
|
||
}
|
||
|
||
destinations := make(map[string]int, len(t.Templates))
|
||
for idx, tmpl := range t.Templates {
|
||
if err := tmpl.Validate(); err != nil {
|
||
outer := fmt.Errorf("Template %d validation failed: %s", idx+1, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
|
||
if other, ok := destinations[tmpl.DestPath]; ok {
|
||
outer := fmt.Errorf("Template %d has same destination as %d", idx+1, other)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
} else {
|
||
destinations[tmpl.DestPath] = idx + 1
|
||
}
|
||
}
|
||
|
||
// Validate the dispatch payload block if there
|
||
if t.DispatchPayload != nil {
|
||
if err := t.DispatchPayload.Validate(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Dispatch Payload validation failed: %v", err))
|
||
}
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// validateServices takes a task and validates the services within it are valid
|
||
// and reference ports that exist.
|
||
func validateServices(t *Task) error {
|
||
var mErr multierror.Error
|
||
|
||
// Ensure that services don't ask for nonexistent ports and their names are
|
||
// unique.
|
||
servicePorts := make(map[string]map[string]struct{})
|
||
addServicePort := func(label, service string) {
|
||
if _, ok := servicePorts[label]; !ok {
|
||
servicePorts[label] = map[string]struct{}{}
|
||
}
|
||
servicePorts[label][service] = struct{}{}
|
||
}
|
||
knownServices := make(map[string]struct{})
|
||
for i, service := range t.Services {
|
||
if err := service.Validate(); err != nil {
|
||
outer := fmt.Errorf("service[%d] %+q validation failed: %s", i, service.Name, err)
|
||
mErr.Errors = append(mErr.Errors, outer)
|
||
}
|
||
|
||
// Ensure that services with the same name are not being registered for
|
||
// the same port
|
||
if _, ok := knownServices[service.Name+service.PortLabel]; ok {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("service %q is duplicate", service.Name))
|
||
}
|
||
knownServices[service.Name+service.PortLabel] = struct{}{}
|
||
|
||
if service.PortLabel != "" {
|
||
if service.AddressMode == "driver" {
|
||
// Numeric port labels are valid for address_mode=driver
|
||
_, err := strconv.Atoi(service.PortLabel)
|
||
if err != nil {
|
||
// Not a numeric port label, add it to list to check
|
||
addServicePort(service.PortLabel, service.Name)
|
||
}
|
||
} else {
|
||
addServicePort(service.PortLabel, service.Name)
|
||
}
|
||
}
|
||
|
||
// Ensure that check names are unique and have valid ports
|
||
knownChecks := make(map[string]struct{})
|
||
for _, check := range service.Checks {
|
||
if _, ok := knownChecks[check.Name]; ok {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("check %q is duplicate", check.Name))
|
||
}
|
||
knownChecks[check.Name] = struct{}{}
|
||
|
||
if !check.RequiresPort() {
|
||
// No need to continue validating check if it doesn't need a port
|
||
continue
|
||
}
|
||
|
||
effectivePort := check.PortLabel
|
||
if effectivePort == "" {
|
||
// Inherits from service
|
||
effectivePort = service.PortLabel
|
||
}
|
||
|
||
if effectivePort == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("check %q is missing a port", check.Name))
|
||
continue
|
||
}
|
||
|
||
isNumeric := false
|
||
portNumber, err := strconv.Atoi(effectivePort)
|
||
if err == nil {
|
||
isNumeric = true
|
||
}
|
||
|
||
// Numeric ports are fine for address_mode = "driver"
|
||
if check.AddressMode == "driver" && isNumeric {
|
||
if portNumber <= 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("check %q has invalid numeric port %d", check.Name, portNumber))
|
||
}
|
||
continue
|
||
}
|
||
|
||
if isNumeric {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf(`check %q cannot use a numeric port %d without setting address_mode="driver"`, check.Name, portNumber))
|
||
continue
|
||
}
|
||
|
||
// PortLabel must exist, report errors by its parent service
|
||
addServicePort(effectivePort, service.Name)
|
||
}
|
||
}
|
||
|
||
// Get the set of port labels.
|
||
portLabels := make(map[string]struct{})
|
||
if t.Resources != nil {
|
||
for _, network := range t.Resources.Networks {
|
||
ports := network.PortLabels()
|
||
for portLabel := range ports {
|
||
portLabels[portLabel] = struct{}{}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Iterate over a sorted list of keys to make error listings stable
|
||
keys := make([]string, 0, len(servicePorts))
|
||
for p := range servicePorts {
|
||
keys = append(keys, p)
|
||
}
|
||
sort.Strings(keys)
|
||
|
||
// Ensure all ports referenced in services exist.
|
||
for _, servicePort := range keys {
|
||
services := servicePorts[servicePort]
|
||
_, ok := portLabels[servicePort]
|
||
if !ok {
|
||
names := make([]string, 0, len(services))
|
||
for name := range services {
|
||
names = append(names, name)
|
||
}
|
||
|
||
// Keep order deterministic
|
||
sort.Strings(names)
|
||
joined := strings.Join(names, ", ")
|
||
err := fmt.Errorf("port label %q referenced by services %v does not exist", servicePort, joined)
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
}
|
||
|
||
// Ensure address mode is valid
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func (t *Task) Warnings() error {
|
||
var mErr multierror.Error
|
||
|
||
// Validate the resources
|
||
if t.Resources != nil && t.Resources.IOPS != 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("IOPS has been deprecated as of Nomad 0.9.0. Please remove IOPS from resource stanza."))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
const (
|
||
// TemplateChangeModeNoop marks that no action should be taken if the
|
||
// template is re-rendered
|
||
TemplateChangeModeNoop = "noop"
|
||
|
||
// TemplateChangeModeSignal marks that the task should be signaled if the
|
||
// template is re-rendered
|
||
TemplateChangeModeSignal = "signal"
|
||
|
||
// TemplateChangeModeRestart marks that the task should be restarted if the
|
||
// template is re-rendered
|
||
TemplateChangeModeRestart = "restart"
|
||
)
|
||
|
||
var (
|
||
// TemplateChangeModeInvalidError is the error for when an invalid change
|
||
// mode is given
|
||
TemplateChangeModeInvalidError = errors.New("Invalid change mode. Must be one of the following: noop, signal, restart")
|
||
)
|
||
|
||
// Template represents a template configuration to be rendered for a given task
|
||
type Template struct {
|
||
// SourcePath is the path to the template to be rendered
|
||
SourcePath string
|
||
|
||
// DestPath is the path to where the template should be rendered
|
||
DestPath string
|
||
|
||
// EmbeddedTmpl store the raw template. This is useful for smaller templates
|
||
// where they are embedded in the job file rather than sent as an artifact
|
||
EmbeddedTmpl string
|
||
|
||
// ChangeMode indicates what should be done if the template is re-rendered
|
||
ChangeMode string
|
||
|
||
// ChangeSignal is the signal that should be sent if the change mode
|
||
// requires it.
|
||
ChangeSignal string
|
||
|
||
// Splay is used to avoid coordinated restarts of processes by applying a
|
||
// random wait between 0 and the given splay value before signalling the
|
||
// application of a change
|
||
Splay time.Duration
|
||
|
||
// Perms is the permission the file should be written out with.
|
||
Perms string
|
||
|
||
// LeftDelim and RightDelim are optional configurations to control what
|
||
// delimiter is utilized when parsing the template.
|
||
LeftDelim string
|
||
RightDelim string
|
||
|
||
// Envvars enables exposing the template as environment variables
|
||
// instead of as a file. The template must be of the form:
|
||
//
|
||
// VAR_NAME_1={{ key service/my-key }}
|
||
// VAR_NAME_2=raw string and {{ env "attr.kernel.name" }}
|
||
//
|
||
// Lines will be split on the initial "=" with the first part being the
|
||
// key name and the second part the value.
|
||
// Empty lines and lines starting with # will be ignored, but to avoid
|
||
// escaping issues #s within lines will not be treated as comments.
|
||
Envvars bool
|
||
|
||
// VaultGrace is the grace duration between lease renewal and reacquiring a
|
||
// secret. If the lease of a secret is less than the grace, a new secret is
|
||
// acquired.
|
||
VaultGrace time.Duration
|
||
}
|
||
|
||
// DefaultTemplate returns a default template.
|
||
func DefaultTemplate() *Template {
|
||
return &Template{
|
||
ChangeMode: TemplateChangeModeRestart,
|
||
Splay: 5 * time.Second,
|
||
Perms: "0644",
|
||
}
|
||
}
|
||
|
||
func (t *Template) Copy() *Template {
|
||
if t == nil {
|
||
return nil
|
||
}
|
||
copy := new(Template)
|
||
*copy = *t
|
||
return copy
|
||
}
|
||
|
||
func (t *Template) Canonicalize() {
|
||
if t.ChangeSignal != "" {
|
||
t.ChangeSignal = strings.ToUpper(t.ChangeSignal)
|
||
}
|
||
}
|
||
|
||
func (t *Template) Validate() error {
|
||
var mErr multierror.Error
|
||
|
||
// Verify we have something to render
|
||
if t.SourcePath == "" && t.EmbeddedTmpl == "" {
|
||
multierror.Append(&mErr, fmt.Errorf("Must specify a source path or have an embedded template"))
|
||
}
|
||
|
||
// Verify we can render somewhere
|
||
if t.DestPath == "" {
|
||
multierror.Append(&mErr, fmt.Errorf("Must specify a destination for the template"))
|
||
}
|
||
|
||
// Verify the destination doesn't escape
|
||
escaped, err := PathEscapesAllocDir("task", t.DestPath)
|
||
if err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("invalid destination path: %v", err))
|
||
} else if escaped {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("destination escapes allocation directory"))
|
||
}
|
||
|
||
// Verify a proper change mode
|
||
switch t.ChangeMode {
|
||
case TemplateChangeModeNoop, TemplateChangeModeRestart:
|
||
case TemplateChangeModeSignal:
|
||
if t.ChangeSignal == "" {
|
||
multierror.Append(&mErr, fmt.Errorf("Must specify signal value when change mode is signal"))
|
||
}
|
||
if t.Envvars {
|
||
multierror.Append(&mErr, fmt.Errorf("cannot use signals with env var templates"))
|
||
}
|
||
default:
|
||
multierror.Append(&mErr, TemplateChangeModeInvalidError)
|
||
}
|
||
|
||
// Verify the splay is positive
|
||
if t.Splay < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Must specify positive splay value"))
|
||
}
|
||
|
||
// Verify the permissions
|
||
if t.Perms != "" {
|
||
if _, err := strconv.ParseUint(t.Perms, 8, 12); err != nil {
|
||
multierror.Append(&mErr, fmt.Errorf("Failed to parse %q as octal: %v", t.Perms, err))
|
||
}
|
||
}
|
||
|
||
if t.VaultGrace.Nanoseconds() < 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Vault grace must be greater than zero: %v < 0", t.VaultGrace))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Set of possible states for a task.
|
||
const (
|
||
TaskStatePending = "pending" // The task is waiting to be run.
|
||
TaskStateRunning = "running" // The task is currently running.
|
||
TaskStateDead = "dead" // Terminal state of task.
|
||
)
|
||
|
||
// TaskState tracks the current state of a task and events that caused state
|
||
// transitions.
|
||
type TaskState struct {
|
||
// The current state of the task.
|
||
State string
|
||
|
||
// Failed marks a task as having failed
|
||
Failed bool
|
||
|
||
// Restarts is the number of times the task has restarted
|
||
Restarts uint64
|
||
|
||
// LastRestart is the time the task last restarted. It is updated each time the
|
||
// task restarts
|
||
LastRestart time.Time
|
||
|
||
// StartedAt is the time the task is started. It is updated each time the
|
||
// task starts
|
||
StartedAt time.Time
|
||
|
||
// FinishedAt is the time at which the task transitioned to dead and will
|
||
// not be started again.
|
||
FinishedAt time.Time
|
||
|
||
// Series of task events that transition the state of the task.
|
||
Events []*TaskEvent
|
||
}
|
||
|
||
// NewTaskState returns a TaskState initialized in the Pending state.
|
||
func NewTaskState() *TaskState {
|
||
return &TaskState{
|
||
State: TaskStatePending,
|
||
}
|
||
}
|
||
|
||
// Canonicalize ensures the TaskState has a State set. It should default to
|
||
// Pending.
|
||
func (ts *TaskState) Canonicalize() {
|
||
if ts.State == "" {
|
||
ts.State = TaskStatePending
|
||
}
|
||
}
|
||
|
||
func (ts *TaskState) Copy() *TaskState {
|
||
if ts == nil {
|
||
return nil
|
||
}
|
||
copy := new(TaskState)
|
||
*copy = *ts
|
||
|
||
if ts.Events != nil {
|
||
copy.Events = make([]*TaskEvent, len(ts.Events))
|
||
for i, e := range ts.Events {
|
||
copy.Events[i] = e.Copy()
|
||
}
|
||
}
|
||
return copy
|
||
}
|
||
|
||
// Successful returns whether a task finished successfully. This doesn't really
|
||
// have meaning on a non-batch allocation because a service and system
|
||
// allocation should not finish.
|
||
func (ts *TaskState) Successful() bool {
|
||
return ts.State == TaskStateDead && !ts.Failed
|
||
}
|
||
|
||
const (
|
||
// TaskSetupFailure indicates that the task could not be started due to a
|
||
// a setup failure.
|
||
TaskSetupFailure = "Setup Failure"
|
||
|
||
// TaskDriveFailure indicates that the task could not be started due to a
|
||
// failure in the driver.
|
||
TaskDriverFailure = "Driver Failure"
|
||
|
||
// TaskReceived signals that the task has been pulled by the client at the
|
||
// given timestamp.
|
||
TaskReceived = "Received"
|
||
|
||
// TaskFailedValidation indicates the task was invalid and as such was not
|
||
// run.
|
||
TaskFailedValidation = "Failed Validation"
|
||
|
||
// TaskStarted signals that the task was started and its timestamp can be
|
||
// used to determine the running length of the task.
|
||
TaskStarted = "Started"
|
||
|
||
// TaskTerminated indicates that the task was started and exited.
|
||
TaskTerminated = "Terminated"
|
||
|
||
// TaskKilling indicates a kill signal has been sent to the task.
|
||
TaskKilling = "Killing"
|
||
|
||
// TaskKilled indicates a user has killed the task.
|
||
TaskKilled = "Killed"
|
||
|
||
// TaskRestarting indicates that task terminated and is being restarted.
|
||
TaskRestarting = "Restarting"
|
||
|
||
// TaskNotRestarting indicates that the task has failed and is not being
|
||
// restarted because it has exceeded its restart policy.
|
||
TaskNotRestarting = "Not Restarting"
|
||
|
||
// TaskRestartSignal indicates that the task has been signalled to be
|
||
// restarted
|
||
TaskRestartSignal = "Restart Signaled"
|
||
|
||
// TaskSignaling indicates that the task is being signalled.
|
||
TaskSignaling = "Signaling"
|
||
|
||
// TaskDownloadingArtifacts means the task is downloading the artifacts
|
||
// specified in the task.
|
||
TaskDownloadingArtifacts = "Downloading Artifacts"
|
||
|
||
// TaskArtifactDownloadFailed indicates that downloading the artifacts
|
||
// failed.
|
||
TaskArtifactDownloadFailed = "Failed Artifact Download"
|
||
|
||
// TaskBuildingTaskDir indicates that the task directory/chroot is being
|
||
// built.
|
||
TaskBuildingTaskDir = "Building Task Directory"
|
||
|
||
// TaskSetup indicates the task runner is setting up the task environment
|
||
TaskSetup = "Task Setup"
|
||
|
||
// TaskDiskExceeded indicates that one of the tasks in a taskgroup has
|
||
// exceeded the requested disk resources.
|
||
TaskDiskExceeded = "Disk Resources Exceeded"
|
||
|
||
// TaskSiblingFailed indicates that a sibling task in the task group has
|
||
// failed.
|
||
TaskSiblingFailed = "Sibling Task Failed"
|
||
|
||
// TaskDriverMessage is an informational event message emitted by
|
||
// drivers such as when they're performing a long running action like
|
||
// downloading an image.
|
||
TaskDriverMessage = "Driver"
|
||
|
||
// TaskLeaderDead indicates that the leader task within the has finished.
|
||
TaskLeaderDead = "Leader Task Dead"
|
||
|
||
// TaskHookFailed indicates that one of the hooks for a task failed.
|
||
TaskHookFailed = "Task hook failed"
|
||
)
|
||
|
||
// TaskEvent is an event that effects the state of a task and contains meta-data
|
||
// appropriate to the events type.
|
||
type TaskEvent struct {
|
||
Type string
|
||
Time int64 // Unix Nanosecond timestamp
|
||
|
||
Message string // A possible message explaining the termination of the task.
|
||
|
||
// DisplayMessage is a human friendly message about the event
|
||
DisplayMessage string
|
||
|
||
// Details is a map with annotated info about the event
|
||
Details map[string]string
|
||
|
||
// DEPRECATION NOTICE: The following fields are deprecated and will be removed
|
||
// in a future release. Field values are available in the Details map.
|
||
|
||
// FailsTask marks whether this event fails the task.
|
||
// Deprecated, use Details["fails_task"] to access this.
|
||
FailsTask bool
|
||
|
||
// Restart fields.
|
||
// Deprecated, use Details["restart_reason"] to access this.
|
||
RestartReason string
|
||
|
||
// Setup Failure fields.
|
||
// Deprecated, use Details["setup_error"] to access this.
|
||
SetupError string
|
||
|
||
// Driver Failure fields.
|
||
// Deprecated, use Details["driver_error"] to access this.
|
||
DriverError string // A driver error occurred while starting the task.
|
||
|
||
// Task Terminated Fields.
|
||
|
||
// Deprecated, use Details["exit_code"] to access this.
|
||
ExitCode int // The exit code of the task.
|
||
|
||
// Deprecated, use Details["signal"] to access this.
|
||
Signal int // The signal that terminated the task.
|
||
|
||
// Killing fields
|
||
// Deprecated, use Details["kill_timeout"] to access this.
|
||
KillTimeout time.Duration
|
||
|
||
// Task Killed Fields.
|
||
// Deprecated, use Details["kill_error"] to access this.
|
||
KillError string // Error killing the task.
|
||
|
||
// KillReason is the reason the task was killed
|
||
// Deprecated, use Details["kill_reason"] to access this.
|
||
KillReason string
|
||
|
||
// TaskRestarting fields.
|
||
// Deprecated, use Details["start_delay"] to access this.
|
||
StartDelay int64 // The sleep period before restarting the task in unix nanoseconds.
|
||
|
||
// Artifact Download fields
|
||
// Deprecated, use Details["download_error"] to access this.
|
||
DownloadError string // Error downloading artifacts
|
||
|
||
// Validation fields
|
||
// Deprecated, use Details["validation_error"] to access this.
|
||
ValidationError string // Validation error
|
||
|
||
// The maximum allowed task disk size.
|
||
// Deprecated, use Details["disk_limit"] to access this.
|
||
DiskLimit int64
|
||
|
||
// Name of the sibling task that caused termination of the task that
|
||
// the TaskEvent refers to.
|
||
// Deprecated, use Details["failed_sibling"] to access this.
|
||
FailedSibling string
|
||
|
||
// VaultError is the error from token renewal
|
||
// Deprecated, use Details["vault_renewal_error"] to access this.
|
||
VaultError string
|
||
|
||
// TaskSignalReason indicates the reason the task is being signalled.
|
||
// Deprecated, use Details["task_signal_reason"] to access this.
|
||
TaskSignalReason string
|
||
|
||
// TaskSignal is the signal that was sent to the task
|
||
// Deprecated, use Details["task_signal"] to access this.
|
||
TaskSignal string
|
||
|
||
// DriverMessage indicates a driver action being taken.
|
||
// Deprecated, use Details["driver_message"] to access this.
|
||
DriverMessage string
|
||
|
||
// GenericSource is the source of a message.
|
||
// Deprecated, is redundant with event type.
|
||
GenericSource string
|
||
}
|
||
|
||
func (event *TaskEvent) PopulateEventDisplayMessage() {
|
||
// Build up the description based on the event type.
|
||
if event == nil { //TODO(preetha) needs investigation alloc_runner's Run method sends a nil event when sigterming nomad. Why?
|
||
return
|
||
}
|
||
|
||
if event.DisplayMessage != "" {
|
||
return
|
||
}
|
||
|
||
var desc string
|
||
switch event.Type {
|
||
case TaskSetup:
|
||
desc = event.Message
|
||
case TaskStarted:
|
||
desc = "Task started by client"
|
||
case TaskReceived:
|
||
desc = "Task received by client"
|
||
case TaskFailedValidation:
|
||
if event.ValidationError != "" {
|
||
desc = event.ValidationError
|
||
} else {
|
||
desc = "Validation of task failed"
|
||
}
|
||
case TaskSetupFailure:
|
||
if event.SetupError != "" {
|
||
desc = event.SetupError
|
||
} else {
|
||
desc = "Task setup failed"
|
||
}
|
||
case TaskDriverFailure:
|
||
if event.DriverError != "" {
|
||
desc = event.DriverError
|
||
} else {
|
||
desc = "Failed to start task"
|
||
}
|
||
case TaskDownloadingArtifacts:
|
||
desc = "Client is downloading artifacts"
|
||
case TaskArtifactDownloadFailed:
|
||
if event.DownloadError != "" {
|
||
desc = event.DownloadError
|
||
} else {
|
||
desc = "Failed to download artifacts"
|
||
}
|
||
case TaskKilling:
|
||
if event.KillReason != "" {
|
||
desc = event.KillReason
|
||
} else if event.KillTimeout != 0 {
|
||
desc = fmt.Sprintf("Sent interrupt. Waiting %v before force killing", event.KillTimeout)
|
||
} else {
|
||
desc = "Sent interrupt"
|
||
}
|
||
case TaskKilled:
|
||
if event.KillError != "" {
|
||
desc = event.KillError
|
||
} else {
|
||
desc = "Task successfully killed"
|
||
}
|
||
case TaskTerminated:
|
||
var parts []string
|
||
parts = append(parts, fmt.Sprintf("Exit Code: %d", event.ExitCode))
|
||
|
||
if event.Signal != 0 {
|
||
parts = append(parts, fmt.Sprintf("Signal: %d", event.Signal))
|
||
}
|
||
|
||
if event.Message != "" {
|
||
parts = append(parts, fmt.Sprintf("Exit Message: %q", event.Message))
|
||
}
|
||
desc = strings.Join(parts, ", ")
|
||
case TaskRestarting:
|
||
in := fmt.Sprintf("Task restarting in %v", time.Duration(event.StartDelay))
|
||
if event.RestartReason != "" && event.RestartReason != ReasonWithinPolicy {
|
||
desc = fmt.Sprintf("%s - %s", event.RestartReason, in)
|
||
} else {
|
||
desc = in
|
||
}
|
||
case TaskNotRestarting:
|
||
if event.RestartReason != "" {
|
||
desc = event.RestartReason
|
||
} else {
|
||
desc = "Task exceeded restart policy"
|
||
}
|
||
case TaskSiblingFailed:
|
||
if event.FailedSibling != "" {
|
||
desc = fmt.Sprintf("Task's sibling %q failed", event.FailedSibling)
|
||
} else {
|
||
desc = "Task's sibling failed"
|
||
}
|
||
case TaskSignaling:
|
||
sig := event.TaskSignal
|
||
reason := event.TaskSignalReason
|
||
|
||
if sig == "" && reason == "" {
|
||
desc = "Task being sent a signal"
|
||
} else if sig == "" {
|
||
desc = reason
|
||
} else if reason == "" {
|
||
desc = fmt.Sprintf("Task being sent signal %v", sig)
|
||
} else {
|
||
desc = fmt.Sprintf("Task being sent signal %v: %v", sig, reason)
|
||
}
|
||
case TaskRestartSignal:
|
||
if event.RestartReason != "" {
|
||
desc = event.RestartReason
|
||
} else {
|
||
desc = "Task signaled to restart"
|
||
}
|
||
case TaskDriverMessage:
|
||
desc = event.DriverMessage
|
||
case TaskLeaderDead:
|
||
desc = "Leader Task in Group dead"
|
||
default:
|
||
desc = event.Message
|
||
}
|
||
|
||
event.DisplayMessage = desc
|
||
}
|
||
|
||
func (te *TaskEvent) GoString() string {
|
||
return fmt.Sprintf("%v - %v", te.Time, te.Type)
|
||
}
|
||
|
||
// SetDisplayMessage sets the display message of TaskEvent
|
||
func (te *TaskEvent) SetDisplayMessage(msg string) *TaskEvent {
|
||
te.DisplayMessage = msg
|
||
return te
|
||
}
|
||
|
||
// SetMessage sets the message of TaskEvent
|
||
func (te *TaskEvent) SetMessage(msg string) *TaskEvent {
|
||
te.Message = msg
|
||
te.Details["message"] = msg
|
||
return te
|
||
}
|
||
|
||
func (te *TaskEvent) Copy() *TaskEvent {
|
||
if te == nil {
|
||
return nil
|
||
}
|
||
copy := new(TaskEvent)
|
||
*copy = *te
|
||
return copy
|
||
}
|
||
|
||
func NewTaskEvent(event string) *TaskEvent {
|
||
return &TaskEvent{
|
||
Type: event,
|
||
Time: time.Now().UnixNano(),
|
||
Details: make(map[string]string),
|
||
}
|
||
}
|
||
|
||
// SetSetupError is used to store an error that occurred while setting up the
|
||
// task
|
||
func (e *TaskEvent) SetSetupError(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.SetupError = err.Error()
|
||
e.Details["setup_error"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetFailsTask() *TaskEvent {
|
||
e.FailsTask = true
|
||
e.Details["fails_task"] = "true"
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetDriverError(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.DriverError = err.Error()
|
||
e.Details["driver_error"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetExitCode(c int) *TaskEvent {
|
||
e.ExitCode = c
|
||
e.Details["exit_code"] = fmt.Sprintf("%d", c)
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetSignal(s int) *TaskEvent {
|
||
e.Signal = s
|
||
e.Details["signal"] = fmt.Sprintf("%d", s)
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetSignalText(s string) *TaskEvent {
|
||
e.Details["signal"] = s
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetExitMessage(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.Message = err.Error()
|
||
e.Details["exit_message"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetKillError(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.KillError = err.Error()
|
||
e.Details["kill_error"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetKillReason(r string) *TaskEvent {
|
||
e.KillReason = r
|
||
e.Details["kill_reason"] = r
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetRestartDelay(delay time.Duration) *TaskEvent {
|
||
e.StartDelay = int64(delay)
|
||
e.Details["start_delay"] = fmt.Sprintf("%d", delay)
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetRestartReason(reason string) *TaskEvent {
|
||
e.RestartReason = reason
|
||
e.Details["restart_reason"] = reason
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetTaskSignalReason(r string) *TaskEvent {
|
||
e.TaskSignalReason = r
|
||
e.Details["task_signal_reason"] = r
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetTaskSignal(s os.Signal) *TaskEvent {
|
||
e.TaskSignal = s.String()
|
||
e.Details["task_signal"] = s.String()
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetDownloadError(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.DownloadError = err.Error()
|
||
e.Details["download_error"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetValidationError(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.ValidationError = err.Error()
|
||
e.Details["validation_error"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetKillTimeout(timeout time.Duration) *TaskEvent {
|
||
e.KillTimeout = timeout
|
||
e.Details["kill_timeout"] = timeout.String()
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetDiskLimit(limit int64) *TaskEvent {
|
||
e.DiskLimit = limit
|
||
e.Details["disk_limit"] = fmt.Sprintf("%d", limit)
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetFailedSibling(sibling string) *TaskEvent {
|
||
e.FailedSibling = sibling
|
||
e.Details["failed_sibling"] = sibling
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetVaultRenewalError(err error) *TaskEvent {
|
||
if err != nil {
|
||
e.VaultError = err.Error()
|
||
e.Details["vault_renewal_error"] = err.Error()
|
||
}
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetDriverMessage(m string) *TaskEvent {
|
||
e.DriverMessage = m
|
||
e.Details["driver_message"] = m
|
||
return e
|
||
}
|
||
|
||
func (e *TaskEvent) SetOOMKilled(oom bool) *TaskEvent {
|
||
e.Details["oom_killed"] = strconv.FormatBool(oom)
|
||
return e
|
||
}
|
||
|
||
// TaskArtifact is an artifact to download before running the task.
|
||
type TaskArtifact struct {
|
||
// GetterSource is the source to download an artifact using go-getter
|
||
GetterSource string
|
||
|
||
// GetterOptions are options to use when downloading the artifact using
|
||
// go-getter.
|
||
GetterOptions map[string]string
|
||
|
||
// GetterMode is the go-getter.ClientMode for fetching resources.
|
||
// Defaults to "any" but can be set to "file" or "dir".
|
||
GetterMode string
|
||
|
||
// RelativeDest is the download destination given relative to the task's
|
||
// directory.
|
||
RelativeDest string
|
||
}
|
||
|
||
func (ta *TaskArtifact) Copy() *TaskArtifact {
|
||
if ta == nil {
|
||
return nil
|
||
}
|
||
nta := new(TaskArtifact)
|
||
*nta = *ta
|
||
nta.GetterOptions = helper.CopyMapStringString(ta.GetterOptions)
|
||
return nta
|
||
}
|
||
|
||
func (ta *TaskArtifact) GoString() string {
|
||
return fmt.Sprintf("%+v", ta)
|
||
}
|
||
|
||
// Hash creates a unique identifier for a TaskArtifact as the same GetterSource
|
||
// may be specified multiple times with different destinations.
|
||
func (ta *TaskArtifact) Hash() string {
|
||
hash, err := blake2b.New256(nil)
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
|
||
hash.Write([]byte(ta.GetterSource))
|
||
|
||
// Must iterate over keys in a consistent order
|
||
keys := make([]string, 0, len(ta.GetterOptions))
|
||
for k := range ta.GetterOptions {
|
||
keys = append(keys, k)
|
||
}
|
||
sort.Strings(keys)
|
||
for _, k := range keys {
|
||
hash.Write([]byte(k))
|
||
hash.Write([]byte(ta.GetterOptions[k]))
|
||
}
|
||
|
||
hash.Write([]byte(ta.GetterMode))
|
||
hash.Write([]byte(ta.RelativeDest))
|
||
return base64.RawStdEncoding.EncodeToString(hash.Sum(nil))
|
||
}
|
||
|
||
// PathEscapesAllocDir returns if the given path escapes the allocation
|
||
// directory. The prefix allows adding a prefix if the path will be joined, for
|
||
// example a "task/local" prefix may be provided if the path will be joined
|
||
// against that prefix.
|
||
func PathEscapesAllocDir(prefix, path string) (bool, error) {
|
||
// Verify the destination doesn't escape the tasks directory
|
||
alloc, err := filepath.Abs(filepath.Join("/", "alloc-dir/", "alloc-id/"))
|
||
if err != nil {
|
||
return false, err
|
||
}
|
||
abs, err := filepath.Abs(filepath.Join(alloc, prefix, path))
|
||
if err != nil {
|
||
return false, err
|
||
}
|
||
rel, err := filepath.Rel(alloc, abs)
|
||
if err != nil {
|
||
return false, err
|
||
}
|
||
|
||
return strings.HasPrefix(rel, ".."), nil
|
||
}
|
||
|
||
func (ta *TaskArtifact) Validate() error {
|
||
// Verify the source
|
||
var mErr multierror.Error
|
||
if ta.GetterSource == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("source must be specified"))
|
||
}
|
||
|
||
switch ta.GetterMode {
|
||
case "":
|
||
// Default to any
|
||
ta.GetterMode = GetterModeAny
|
||
case GetterModeAny, GetterModeFile, GetterModeDir:
|
||
// Ok
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("invalid artifact mode %q; must be one of: %s, %s, %s",
|
||
ta.GetterMode, GetterModeAny, GetterModeFile, GetterModeDir))
|
||
}
|
||
|
||
escaped, err := PathEscapesAllocDir("task", ta.RelativeDest)
|
||
if err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("invalid destination path: %v", err))
|
||
} else if escaped {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("destination escapes allocation directory"))
|
||
}
|
||
|
||
if err := ta.validateChecksum(); err != nil {
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
func (ta *TaskArtifact) validateChecksum() error {
|
||
check, ok := ta.GetterOptions["checksum"]
|
||
if !ok {
|
||
return nil
|
||
}
|
||
|
||
// Job struct validation occurs before interpolation resolution can be effective.
|
||
// Skip checking if checksum contain variable reference, and artifacts fetching will
|
||
// eventually fail, if checksum is indeed invalid.
|
||
if args.ContainsEnv(check) {
|
||
return nil
|
||
}
|
||
|
||
check = strings.TrimSpace(check)
|
||
if check == "" {
|
||
return fmt.Errorf("checksum value cannot be empty")
|
||
}
|
||
|
||
parts := strings.Split(check, ":")
|
||
if l := len(parts); l != 2 {
|
||
return fmt.Errorf(`checksum must be given as "type:value"; got %q`, check)
|
||
}
|
||
|
||
checksumVal := parts[1]
|
||
checksumBytes, err := hex.DecodeString(checksumVal)
|
||
if err != nil {
|
||
return fmt.Errorf("invalid checksum: %v", err)
|
||
}
|
||
|
||
checksumType := parts[0]
|
||
expectedLength := 0
|
||
switch checksumType {
|
||
case "md5":
|
||
expectedLength = md5.Size
|
||
case "sha1":
|
||
expectedLength = sha1.Size
|
||
case "sha256":
|
||
expectedLength = sha256.Size
|
||
case "sha512":
|
||
expectedLength = sha512.Size
|
||
default:
|
||
return fmt.Errorf("unsupported checksum type: %s", checksumType)
|
||
}
|
||
|
||
if len(checksumBytes) != expectedLength {
|
||
return fmt.Errorf("invalid %s checksum: %v", checksumType, checksumVal)
|
||
}
|
||
|
||
return nil
|
||
}
|
||
|
||
const (
|
||
ConstraintDistinctProperty = "distinct_property"
|
||
ConstraintDistinctHosts = "distinct_hosts"
|
||
ConstraintRegex = "regexp"
|
||
ConstraintVersion = "version"
|
||
ConstraintSetContains = "set_contains"
|
||
ConstraintSetContainsAll = "set_contains_all"
|
||
ConstraintSetContainsAny = "set_contains_any"
|
||
ConstraintAttributeIsSet = "is_set"
|
||
ConstraintAttributeIsNotSet = "is_not_set"
|
||
)
|
||
|
||
// Constraints are used to restrict placement options.
|
||
type Constraint struct {
|
||
LTarget string // Left-hand target
|
||
RTarget string // Right-hand target
|
||
Operand string // Constraint operand (<=, <, =, !=, >, >=), contains, near
|
||
str string // Memoized string
|
||
}
|
||
|
||
// Equal checks if two constraints are equal
|
||
func (c *Constraint) Equals(o *Constraint) bool {
|
||
return c == o ||
|
||
c.LTarget == o.LTarget &&
|
||
c.RTarget == o.RTarget &&
|
||
c.Operand == o.Operand
|
||
}
|
||
|
||
func (c *Constraint) Equal(o *Constraint) bool {
|
||
return c.Equals(o)
|
||
}
|
||
|
||
func (c *Constraint) Copy() *Constraint {
|
||
if c == nil {
|
||
return nil
|
||
}
|
||
nc := new(Constraint)
|
||
*nc = *c
|
||
return nc
|
||
}
|
||
|
||
func (c *Constraint) String() string {
|
||
if c.str != "" {
|
||
return c.str
|
||
}
|
||
c.str = fmt.Sprintf("%s %s %s", c.LTarget, c.Operand, c.RTarget)
|
||
return c.str
|
||
}
|
||
|
||
func (c *Constraint) Validate() error {
|
||
var mErr multierror.Error
|
||
if c.Operand == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing constraint operand"))
|
||
}
|
||
|
||
// requireLtarget specifies whether the constraint requires an LTarget to be
|
||
// provided.
|
||
requireLtarget := true
|
||
|
||
// Perform additional validation based on operand
|
||
switch c.Operand {
|
||
case ConstraintDistinctHosts:
|
||
requireLtarget = false
|
||
case ConstraintSetContainsAll, ConstraintSetContainsAny, ConstraintSetContains:
|
||
if c.RTarget == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Set contains constraint requires an RTarget"))
|
||
}
|
||
case ConstraintRegex:
|
||
if _, err := regexp.Compile(c.RTarget); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Regular expression failed to compile: %v", err))
|
||
}
|
||
case ConstraintVersion:
|
||
if _, err := version.NewConstraint(c.RTarget); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Version constraint is invalid: %v", err))
|
||
}
|
||
case ConstraintDistinctProperty:
|
||
// If a count is set, make sure it is convertible to a uint64
|
||
if c.RTarget != "" {
|
||
count, err := strconv.ParseUint(c.RTarget, 10, 64)
|
||
if err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Failed to convert RTarget %q to uint64: %v", c.RTarget, err))
|
||
} else if count < 1 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Distinct Property must have an allowed count of 1 or greater: %d < 1", count))
|
||
}
|
||
}
|
||
case ConstraintAttributeIsSet, ConstraintAttributeIsNotSet:
|
||
if c.RTarget != "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Operator %q does not support an RTarget", c.Operand))
|
||
}
|
||
case "=", "==", "is", "!=", "not", "<", "<=", ">", ">=":
|
||
if c.RTarget == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Operator %q requires an RTarget", c.Operand))
|
||
}
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Unknown constraint type %q", c.Operand))
|
||
}
|
||
|
||
// Ensure we have an LTarget for the constraints that need one
|
||
if requireLtarget && c.LTarget == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("No LTarget provided but is required by constraint"))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
type Constraints []*Constraint
|
||
|
||
// Equals compares Constraints as a set
|
||
func (xs *Constraints) Equals(ys *Constraints) bool {
|
||
if xs == ys {
|
||
return true
|
||
}
|
||
if xs == nil || ys == nil {
|
||
return false
|
||
}
|
||
if len(*xs) != len(*ys) {
|
||
return false
|
||
}
|
||
SETEQUALS:
|
||
for _, x := range *xs {
|
||
for _, y := range *ys {
|
||
if x.Equals(y) {
|
||
continue SETEQUALS
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
return true
|
||
}
|
||
|
||
// Affinity is used to score placement options based on a weight
|
||
type Affinity struct {
|
||
LTarget string // Left-hand target
|
||
RTarget string // Right-hand target
|
||
Operand string // Affinity operand (<=, <, =, !=, >, >=), set_contains_all, set_contains_any
|
||
Weight int8 // Weight applied to nodes that match the affinity. Can be negative
|
||
str string // Memoized string
|
||
}
|
||
|
||
// Equal checks if two affinities are equal
|
||
func (a *Affinity) Equals(o *Affinity) bool {
|
||
return a == o ||
|
||
a.LTarget == o.LTarget &&
|
||
a.RTarget == o.RTarget &&
|
||
a.Operand == o.Operand &&
|
||
a.Weight == o.Weight
|
||
}
|
||
|
||
func (a *Affinity) Equal(o *Affinity) bool {
|
||
return a.Equals(o)
|
||
}
|
||
|
||
func (a *Affinity) Copy() *Affinity {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
na := new(Affinity)
|
||
*na = *a
|
||
return na
|
||
}
|
||
|
||
func (a *Affinity) String() string {
|
||
if a.str != "" {
|
||
return a.str
|
||
}
|
||
a.str = fmt.Sprintf("%s %s %s %v", a.LTarget, a.Operand, a.RTarget, a.Weight)
|
||
return a.str
|
||
}
|
||
|
||
func (a *Affinity) Validate() error {
|
||
var mErr multierror.Error
|
||
if a.Operand == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing affinity operand"))
|
||
}
|
||
|
||
// Perform additional validation based on operand
|
||
switch a.Operand {
|
||
case ConstraintSetContainsAll, ConstraintSetContainsAny, ConstraintSetContains:
|
||
if a.RTarget == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Set contains operators require an RTarget"))
|
||
}
|
||
case ConstraintRegex:
|
||
if _, err := regexp.Compile(a.RTarget); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Regular expression failed to compile: %v", err))
|
||
}
|
||
case ConstraintVersion:
|
||
if _, err := version.NewConstraint(a.RTarget); err != nil {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Version affinity is invalid: %v", err))
|
||
}
|
||
case "=", "==", "is", "!=", "not", "<", "<=", ">", ">=":
|
||
if a.RTarget == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Operator %q requires an RTarget", a.Operand))
|
||
}
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Unknown affinity operator %q", a.Operand))
|
||
}
|
||
|
||
// Ensure we have an LTarget
|
||
if a.LTarget == "" {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("No LTarget provided but is required"))
|
||
}
|
||
|
||
// Ensure that weight is between -100 and 100, and not zero
|
||
if a.Weight == 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Affinity weight cannot be zero"))
|
||
}
|
||
|
||
if a.Weight > 100 || a.Weight < -100 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("Affinity weight must be within the range [-100,100]"))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// Spread is used to specify desired distribution of allocations according to weight
|
||
type Spread struct {
|
||
// Attribute is the node attribute used as the spread criteria
|
||
Attribute string
|
||
|
||
// Weight is the relative weight of this spread, useful when there are multiple
|
||
// spread and affinities
|
||
Weight int8
|
||
|
||
// SpreadTarget is used to describe desired percentages for each attribute value
|
||
SpreadTarget []*SpreadTarget
|
||
|
||
// Memoized string representation
|
||
str string
|
||
}
|
||
|
||
type Affinities []*Affinity
|
||
|
||
// Equals compares Affinities as a set
|
||
func (xs *Affinities) Equals(ys *Affinities) bool {
|
||
if xs == ys {
|
||
return true
|
||
}
|
||
if xs == nil || ys == nil {
|
||
return false
|
||
}
|
||
if len(*xs) != len(*ys) {
|
||
return false
|
||
}
|
||
SETEQUALS:
|
||
for _, x := range *xs {
|
||
for _, y := range *ys {
|
||
if x.Equals(y) {
|
||
continue SETEQUALS
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
return true
|
||
}
|
||
|
||
func (s *Spread) Copy() *Spread {
|
||
if s == nil {
|
||
return nil
|
||
}
|
||
ns := new(Spread)
|
||
*ns = *s
|
||
|
||
ns.SpreadTarget = CopySliceSpreadTarget(s.SpreadTarget)
|
||
return ns
|
||
}
|
||
|
||
func (s *Spread) String() string {
|
||
if s.str != "" {
|
||
return s.str
|
||
}
|
||
s.str = fmt.Sprintf("%s %s %v", s.Attribute, s.SpreadTarget, s.Weight)
|
||
return s.str
|
||
}
|
||
|
||
func (s *Spread) Validate() error {
|
||
var mErr multierror.Error
|
||
if s.Attribute == "" {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Missing spread attribute"))
|
||
}
|
||
if s.Weight <= 0 || s.Weight > 100 {
|
||
mErr.Errors = append(mErr.Errors, errors.New("Spread stanza must have a positive weight from 0 to 100"))
|
||
}
|
||
seen := make(map[string]struct{})
|
||
sumPercent := uint32(0)
|
||
|
||
for _, target := range s.SpreadTarget {
|
||
// Make sure there are no duplicates
|
||
_, ok := seen[target.Value]
|
||
if !ok {
|
||
seen[target.Value] = struct{}{}
|
||
} else {
|
||
mErr.Errors = append(mErr.Errors, errors.New(fmt.Sprintf("Spread target value %q already defined", target.Value)))
|
||
}
|
||
if target.Percent < 0 || target.Percent > 100 {
|
||
mErr.Errors = append(mErr.Errors, errors.New(fmt.Sprintf("Spread target percentage for value %q must be between 0 and 100", target.Value)))
|
||
}
|
||
sumPercent += uint32(target.Percent)
|
||
}
|
||
if sumPercent > 100 {
|
||
mErr.Errors = append(mErr.Errors, errors.New(fmt.Sprintf("Sum of spread target percentages must not be greater than 100%%; got %d%%", sumPercent)))
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// SpreadTarget is used to specify desired percentages for each attribute value
|
||
type SpreadTarget struct {
|
||
// Value is a single attribute value, like "dc1"
|
||
Value string
|
||
|
||
// Percent is the desired percentage of allocs
|
||
Percent uint8
|
||
|
||
// Memoized string representation
|
||
str string
|
||
}
|
||
|
||
func (s *SpreadTarget) Copy() *SpreadTarget {
|
||
if s == nil {
|
||
return nil
|
||
}
|
||
|
||
ns := new(SpreadTarget)
|
||
*ns = *s
|
||
return ns
|
||
}
|
||
|
||
func (s *SpreadTarget) String() string {
|
||
if s.str != "" {
|
||
return s.str
|
||
}
|
||
s.str = fmt.Sprintf("%q %v%%", s.Value, s.Percent)
|
||
return s.str
|
||
}
|
||
|
||
// EphemeralDisk is an ephemeral disk object
|
||
type EphemeralDisk struct {
|
||
// Sticky indicates whether the allocation is sticky to a node
|
||
Sticky bool
|
||
|
||
// SizeMB is the size of the local disk
|
||
SizeMB int
|
||
|
||
// Migrate determines if Nomad client should migrate the allocation dir for
|
||
// sticky allocations
|
||
Migrate bool
|
||
}
|
||
|
||
// DefaultEphemeralDisk returns a EphemeralDisk with default configurations
|
||
func DefaultEphemeralDisk() *EphemeralDisk {
|
||
return &EphemeralDisk{
|
||
SizeMB: 300,
|
||
}
|
||
}
|
||
|
||
// Validate validates EphemeralDisk
|
||
func (d *EphemeralDisk) Validate() error {
|
||
if d.SizeMB < 10 {
|
||
return fmt.Errorf("minimum DiskMB value is 10; got %d", d.SizeMB)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// Copy copies the EphemeralDisk struct and returns a new one
|
||
func (d *EphemeralDisk) Copy() *EphemeralDisk {
|
||
ld := new(EphemeralDisk)
|
||
*ld = *d
|
||
return ld
|
||
}
|
||
|
||
var (
|
||
// VaultUnrecoverableError matches unrecoverable errors returned by a Vault
|
||
// server
|
||
VaultUnrecoverableError = regexp.MustCompile(`Code:\s+40(0|3|4)`)
|
||
)
|
||
|
||
const (
|
||
// VaultChangeModeNoop takes no action when a new token is retrieved.
|
||
VaultChangeModeNoop = "noop"
|
||
|
||
// VaultChangeModeSignal signals the task when a new token is retrieved.
|
||
VaultChangeModeSignal = "signal"
|
||
|
||
// VaultChangeModeRestart restarts the task when a new token is retrieved.
|
||
VaultChangeModeRestart = "restart"
|
||
)
|
||
|
||
// Vault stores the set of permissions a task needs access to from Vault.
|
||
type Vault struct {
|
||
// Policies is the set of policies that the task needs access to
|
||
Policies []string
|
||
|
||
// Env marks whether the Vault Token should be exposed as an environment
|
||
// variable
|
||
Env bool
|
||
|
||
// ChangeMode is used to configure the task's behavior when the Vault
|
||
// token changes because the original token could not be renewed in time.
|
||
ChangeMode string
|
||
|
||
// ChangeSignal is the signal sent to the task when a new token is
|
||
// retrieved. This is only valid when using the signal change mode.
|
||
ChangeSignal string
|
||
}
|
||
|
||
func DefaultVaultBlock() *Vault {
|
||
return &Vault{
|
||
Env: true,
|
||
ChangeMode: VaultChangeModeRestart,
|
||
}
|
||
}
|
||
|
||
// Copy returns a copy of this Vault block.
|
||
func (v *Vault) Copy() *Vault {
|
||
if v == nil {
|
||
return nil
|
||
}
|
||
|
||
nv := new(Vault)
|
||
*nv = *v
|
||
return nv
|
||
}
|
||
|
||
func (v *Vault) Canonicalize() {
|
||
if v.ChangeSignal != "" {
|
||
v.ChangeSignal = strings.ToUpper(v.ChangeSignal)
|
||
}
|
||
}
|
||
|
||
// Validate returns if the Vault block is valid.
|
||
func (v *Vault) Validate() error {
|
||
if v == nil {
|
||
return nil
|
||
}
|
||
|
||
var mErr multierror.Error
|
||
if len(v.Policies) == 0 {
|
||
multierror.Append(&mErr, fmt.Errorf("Policy list cannot be empty"))
|
||
}
|
||
|
||
for _, p := range v.Policies {
|
||
if p == "root" {
|
||
multierror.Append(&mErr, fmt.Errorf("Can not specify \"root\" policy"))
|
||
}
|
||
}
|
||
|
||
switch v.ChangeMode {
|
||
case VaultChangeModeSignal:
|
||
if v.ChangeSignal == "" {
|
||
multierror.Append(&mErr, fmt.Errorf("Signal must be specified when using change mode %q", VaultChangeModeSignal))
|
||
}
|
||
case VaultChangeModeNoop, VaultChangeModeRestart:
|
||
default:
|
||
multierror.Append(&mErr, fmt.Errorf("Unknown change mode %q", v.ChangeMode))
|
||
}
|
||
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
const (
|
||
// DeploymentStatuses are the various states a deployment can be be in
|
||
DeploymentStatusRunning = "running"
|
||
DeploymentStatusPaused = "paused"
|
||
DeploymentStatusFailed = "failed"
|
||
DeploymentStatusSuccessful = "successful"
|
||
DeploymentStatusCancelled = "cancelled"
|
||
|
||
// DeploymentStatusDescriptions are the various descriptions of the states a
|
||
// deployment can be in.
|
||
DeploymentStatusDescriptionRunning = "Deployment is running"
|
||
DeploymentStatusDescriptionRunningNeedsPromotion = "Deployment is running but requires promotion"
|
||
DeploymentStatusDescriptionPaused = "Deployment is paused"
|
||
DeploymentStatusDescriptionSuccessful = "Deployment completed successfully"
|
||
DeploymentStatusDescriptionStoppedJob = "Cancelled because job is stopped"
|
||
DeploymentStatusDescriptionNewerJob = "Cancelled due to newer version of job"
|
||
DeploymentStatusDescriptionFailedAllocations = "Failed due to unhealthy allocations"
|
||
DeploymentStatusDescriptionProgressDeadline = "Failed due to progress deadline"
|
||
DeploymentStatusDescriptionFailedByUser = "Deployment marked as failed"
|
||
)
|
||
|
||
// DeploymentStatusDescriptionRollback is used to get the status description of
|
||
// a deployment when rolling back to an older job.
|
||
func DeploymentStatusDescriptionRollback(baseDescription string, jobVersion uint64) string {
|
||
return fmt.Sprintf("%s - rolling back to job version %d", baseDescription, jobVersion)
|
||
}
|
||
|
||
// DeploymentStatusDescriptionRollbackNoop is used to get the status description of
|
||
// a deployment when rolling back is not possible because it has the same specification
|
||
func DeploymentStatusDescriptionRollbackNoop(baseDescription string, jobVersion uint64) string {
|
||
return fmt.Sprintf("%s - not rolling back to stable job version %d as current job has same specification", baseDescription, jobVersion)
|
||
}
|
||
|
||
// DeploymentStatusDescriptionNoRollbackTarget is used to get the status description of
|
||
// a deployment when there is no target to rollback to but autorevert is desired.
|
||
func DeploymentStatusDescriptionNoRollbackTarget(baseDescription string) string {
|
||
return fmt.Sprintf("%s - no stable job version to auto revert to", baseDescription)
|
||
}
|
||
|
||
// Deployment is the object that represents a job deployment which is used to
|
||
// transition a job between versions.
|
||
type Deployment struct {
|
||
// ID is a generated UUID for the deployment
|
||
ID string
|
||
|
||
// Namespace is the namespace the deployment is created in
|
||
Namespace string
|
||
|
||
// JobID is the job the deployment is created for
|
||
JobID string
|
||
|
||
// JobVersion is the version of the job at which the deployment is tracking
|
||
JobVersion uint64
|
||
|
||
// JobModifyIndex is the ModifyIndex of the job which the deployment is
|
||
// tracking.
|
||
JobModifyIndex uint64
|
||
|
||
// JobSpecModifyIndex is the JobModifyIndex of the job which the
|
||
// deployment is tracking.
|
||
JobSpecModifyIndex uint64
|
||
|
||
// JobCreateIndex is the create index of the job which the deployment is
|
||
// tracking. It is needed so that if the job gets stopped and reran we can
|
||
// present the correct list of deployments for the job and not old ones.
|
||
JobCreateIndex uint64
|
||
|
||
// TaskGroups is the set of task groups effected by the deployment and their
|
||
// current deployment status.
|
||
TaskGroups map[string]*DeploymentState
|
||
|
||
// The status of the deployment
|
||
Status string
|
||
|
||
// StatusDescription allows a human readable description of the deployment
|
||
// status.
|
||
StatusDescription string
|
||
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// NewDeployment creates a new deployment given the job.
|
||
func NewDeployment(job *Job) *Deployment {
|
||
return &Deployment{
|
||
ID: uuid.Generate(),
|
||
Namespace: job.Namespace,
|
||
JobID: job.ID,
|
||
JobVersion: job.Version,
|
||
JobModifyIndex: job.ModifyIndex,
|
||
JobSpecModifyIndex: job.JobModifyIndex,
|
||
JobCreateIndex: job.CreateIndex,
|
||
Status: DeploymentStatusRunning,
|
||
StatusDescription: DeploymentStatusDescriptionRunning,
|
||
TaskGroups: make(map[string]*DeploymentState, len(job.TaskGroups)),
|
||
}
|
||
}
|
||
|
||
func (d *Deployment) Copy() *Deployment {
|
||
if d == nil {
|
||
return nil
|
||
}
|
||
|
||
c := &Deployment{}
|
||
*c = *d
|
||
|
||
c.TaskGroups = nil
|
||
if l := len(d.TaskGroups); d.TaskGroups != nil {
|
||
c.TaskGroups = make(map[string]*DeploymentState, l)
|
||
for tg, s := range d.TaskGroups {
|
||
c.TaskGroups[tg] = s.Copy()
|
||
}
|
||
}
|
||
|
||
return c
|
||
}
|
||
|
||
// Active returns whether the deployment is active or terminal.
|
||
func (d *Deployment) Active() bool {
|
||
switch d.Status {
|
||
case DeploymentStatusRunning, DeploymentStatusPaused:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// GetID is a helper for getting the ID when the object may be nil
|
||
func (d *Deployment) GetID() string {
|
||
if d == nil {
|
||
return ""
|
||
}
|
||
return d.ID
|
||
}
|
||
|
||
// HasPlacedCanaries returns whether the deployment has placed canaries
|
||
func (d *Deployment) HasPlacedCanaries() bool {
|
||
if d == nil || len(d.TaskGroups) == 0 {
|
||
return false
|
||
}
|
||
for _, group := range d.TaskGroups {
|
||
if len(group.PlacedCanaries) != 0 {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
// RequiresPromotion returns whether the deployment requires promotion to
|
||
// continue
|
||
func (d *Deployment) RequiresPromotion() bool {
|
||
if d == nil || len(d.TaskGroups) == 0 || d.Status != DeploymentStatusRunning {
|
||
return false
|
||
}
|
||
for _, group := range d.TaskGroups {
|
||
if group.DesiredCanaries > 0 && !group.Promoted {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func (d *Deployment) GoString() string {
|
||
base := fmt.Sprintf("Deployment ID %q for job %q has status %q (%v):", d.ID, d.JobID, d.Status, d.StatusDescription)
|
||
for group, state := range d.TaskGroups {
|
||
base += fmt.Sprintf("\nTask Group %q has state:\n%#v", group, state)
|
||
}
|
||
return base
|
||
}
|
||
|
||
// DeploymentState tracks the state of a deployment for a given task group.
|
||
type DeploymentState struct {
|
||
// AutoRevert marks whether the task group has indicated the job should be
|
||
// reverted on failure
|
||
AutoRevert bool
|
||
|
||
// ProgressDeadline is the deadline by which an allocation must transition
|
||
// to healthy before the deployment is considered failed.
|
||
ProgressDeadline time.Duration
|
||
|
||
// RequireProgressBy is the time by which an allocation must transition
|
||
// to healthy before the deployment is considered failed.
|
||
RequireProgressBy time.Time
|
||
|
||
// Promoted marks whether the canaries have been promoted
|
||
Promoted bool
|
||
|
||
// PlacedCanaries is the set of placed canary allocations
|
||
PlacedCanaries []string
|
||
|
||
// DesiredCanaries is the number of canaries that should be created.
|
||
DesiredCanaries int
|
||
|
||
// DesiredTotal is the total number of allocations that should be created as
|
||
// part of the deployment.
|
||
DesiredTotal int
|
||
|
||
// PlacedAllocs is the number of allocations that have been placed
|
||
PlacedAllocs int
|
||
|
||
// HealthyAllocs is the number of allocations that have been marked healthy.
|
||
HealthyAllocs int
|
||
|
||
// UnhealthyAllocs are allocations that have been marked as unhealthy.
|
||
UnhealthyAllocs int
|
||
}
|
||
|
||
func (d *DeploymentState) GoString() string {
|
||
base := fmt.Sprintf("\tDesired Total: %d", d.DesiredTotal)
|
||
base += fmt.Sprintf("\n\tDesired Canaries: %d", d.DesiredCanaries)
|
||
base += fmt.Sprintf("\n\tPlaced Canaries: %#v", d.PlacedCanaries)
|
||
base += fmt.Sprintf("\n\tPromoted: %v", d.Promoted)
|
||
base += fmt.Sprintf("\n\tPlaced: %d", d.PlacedAllocs)
|
||
base += fmt.Sprintf("\n\tHealthy: %d", d.HealthyAllocs)
|
||
base += fmt.Sprintf("\n\tUnhealthy: %d", d.UnhealthyAllocs)
|
||
base += fmt.Sprintf("\n\tAutoRevert: %v", d.AutoRevert)
|
||
return base
|
||
}
|
||
|
||
func (d *DeploymentState) Copy() *DeploymentState {
|
||
c := &DeploymentState{}
|
||
*c = *d
|
||
c.PlacedCanaries = helper.CopySliceString(d.PlacedCanaries)
|
||
return c
|
||
}
|
||
|
||
// DeploymentStatusUpdate is used to update the status of a given deployment
|
||
type DeploymentStatusUpdate struct {
|
||
// DeploymentID is the ID of the deployment to update
|
||
DeploymentID string
|
||
|
||
// Status is the new status of the deployment.
|
||
Status string
|
||
|
||
// StatusDescription is the new status description of the deployment.
|
||
StatusDescription string
|
||
}
|
||
|
||
// RescheduleTracker encapsulates previous reschedule events
|
||
type RescheduleTracker struct {
|
||
Events []*RescheduleEvent
|
||
}
|
||
|
||
func (rt *RescheduleTracker) Copy() *RescheduleTracker {
|
||
if rt == nil {
|
||
return nil
|
||
}
|
||
nt := &RescheduleTracker{}
|
||
*nt = *rt
|
||
rescheduleEvents := make([]*RescheduleEvent, 0, len(rt.Events))
|
||
for _, tracker := range rt.Events {
|
||
rescheduleEvents = append(rescheduleEvents, tracker.Copy())
|
||
}
|
||
nt.Events = rescheduleEvents
|
||
return nt
|
||
}
|
||
|
||
// RescheduleEvent is used to keep track of previous attempts at rescheduling an allocation
|
||
type RescheduleEvent struct {
|
||
// RescheduleTime is the timestamp of a reschedule attempt
|
||
RescheduleTime int64
|
||
|
||
// PrevAllocID is the ID of the previous allocation being restarted
|
||
PrevAllocID string
|
||
|
||
// PrevNodeID is the node ID of the previous allocation
|
||
PrevNodeID string
|
||
|
||
// Delay is the reschedule delay associated with the attempt
|
||
Delay time.Duration
|
||
}
|
||
|
||
func NewRescheduleEvent(rescheduleTime int64, prevAllocID string, prevNodeID string, delay time.Duration) *RescheduleEvent {
|
||
return &RescheduleEvent{RescheduleTime: rescheduleTime,
|
||
PrevAllocID: prevAllocID,
|
||
PrevNodeID: prevNodeID,
|
||
Delay: delay}
|
||
}
|
||
|
||
func (re *RescheduleEvent) Copy() *RescheduleEvent {
|
||
if re == nil {
|
||
return nil
|
||
}
|
||
copy := new(RescheduleEvent)
|
||
*copy = *re
|
||
return copy
|
||
}
|
||
|
||
// DesiredTransition is used to mark an allocation as having a desired state
|
||
// transition. This information can be used by the scheduler to make the
|
||
// correct decision.
|
||
type DesiredTransition struct {
|
||
// Migrate is used to indicate that this allocation should be stopped and
|
||
// migrated to another node.
|
||
Migrate *bool
|
||
|
||
// Reschedule is used to indicate that this allocation is eligible to be
|
||
// rescheduled. Most allocations are automatically eligible for
|
||
// rescheduling, so this field is only required when an allocation is not
|
||
// automatically eligible. An example is an allocation that is part of a
|
||
// deployment.
|
||
Reschedule *bool
|
||
|
||
// ForceReschedule is used to indicate that this allocation must be rescheduled.
|
||
// This field is only used when operators want to force a placement even if
|
||
// a failed allocation is not eligible to be rescheduled
|
||
ForceReschedule *bool
|
||
}
|
||
|
||
// Merge merges the two desired transitions, preferring the values from the
|
||
// passed in object.
|
||
func (d *DesiredTransition) Merge(o *DesiredTransition) {
|
||
if o.Migrate != nil {
|
||
d.Migrate = o.Migrate
|
||
}
|
||
|
||
if o.Reschedule != nil {
|
||
d.Reschedule = o.Reschedule
|
||
}
|
||
|
||
if o.ForceReschedule != nil {
|
||
d.ForceReschedule = o.ForceReschedule
|
||
}
|
||
}
|
||
|
||
// ShouldMigrate returns whether the transition object dictates a migration.
|
||
func (d *DesiredTransition) ShouldMigrate() bool {
|
||
return d.Migrate != nil && *d.Migrate
|
||
}
|
||
|
||
// ShouldReschedule returns whether the transition object dictates a
|
||
// rescheduling.
|
||
func (d *DesiredTransition) ShouldReschedule() bool {
|
||
return d.Reschedule != nil && *d.Reschedule
|
||
}
|
||
|
||
// ShouldForceReschedule returns whether the transition object dictates a
|
||
// forced rescheduling.
|
||
func (d *DesiredTransition) ShouldForceReschedule() bool {
|
||
if d == nil {
|
||
return false
|
||
}
|
||
return d.ForceReschedule != nil && *d.ForceReschedule
|
||
}
|
||
|
||
const (
|
||
AllocDesiredStatusRun = "run" // Allocation should run
|
||
AllocDesiredStatusStop = "stop" // Allocation should stop
|
||
AllocDesiredStatusEvict = "evict" // Allocation should stop, and was evicted
|
||
)
|
||
|
||
const (
|
||
AllocClientStatusPending = "pending"
|
||
AllocClientStatusRunning = "running"
|
||
AllocClientStatusComplete = "complete"
|
||
AllocClientStatusFailed = "failed"
|
||
AllocClientStatusLost = "lost"
|
||
)
|
||
|
||
// Allocation is used to allocate the placement of a task group to a node.
|
||
type Allocation struct {
|
||
// msgpack omit empty fields during serialization
|
||
_struct bool `codec:",omitempty"` // nolint: structcheck
|
||
|
||
// ID of the allocation (UUID)
|
||
ID string
|
||
|
||
// Namespace is the namespace the allocation is created in
|
||
Namespace string
|
||
|
||
// ID of the evaluation that generated this allocation
|
||
EvalID string
|
||
|
||
// Name is a logical name of the allocation.
|
||
Name string
|
||
|
||
// NodeID is the node this is being placed on
|
||
NodeID string
|
||
|
||
// NodeName is the name of the node this is being placed on.
|
||
NodeName string
|
||
|
||
// Job is the parent job of the task group being allocated.
|
||
// This is copied at allocation time to avoid issues if the job
|
||
// definition is updated.
|
||
JobID string
|
||
Job *Job
|
||
|
||
// TaskGroup is the name of the task group that should be run
|
||
TaskGroup string
|
||
|
||
// COMPAT(0.11): Remove in 0.11
|
||
// Resources is the total set of resources allocated as part
|
||
// of this allocation of the task group. Dynamic ports will be set by
|
||
// the scheduler.
|
||
Resources *Resources
|
||
|
||
// COMPAT(0.11): Remove in 0.11
|
||
// SharedResources are the resources that are shared by all the tasks in an
|
||
// allocation
|
||
SharedResources *Resources
|
||
|
||
// COMPAT(0.11): Remove in 0.11
|
||
// TaskResources is the set of resources allocated to each
|
||
// task. These should sum to the total Resources. Dynamic ports will be
|
||
// set by the scheduler.
|
||
TaskResources map[string]*Resources
|
||
|
||
// AllocatedResources is the total resources allocated for the task group.
|
||
AllocatedResources *AllocatedResources
|
||
|
||
// Metrics associated with this allocation
|
||
Metrics *AllocMetric
|
||
|
||
// Desired Status of the allocation on the client
|
||
DesiredStatus string
|
||
|
||
// DesiredStatusDescription is meant to provide more human useful information
|
||
DesiredDescription string
|
||
|
||
// DesiredTransition is used to indicate that a state transition
|
||
// is desired for a given reason.
|
||
DesiredTransition DesiredTransition
|
||
|
||
// Status of the allocation on the client
|
||
ClientStatus string
|
||
|
||
// ClientStatusDescription is meant to provide more human useful information
|
||
ClientDescription string
|
||
|
||
// TaskStates stores the state of each task,
|
||
TaskStates map[string]*TaskState
|
||
|
||
// PreviousAllocation is the allocation that this allocation is replacing
|
||
PreviousAllocation string
|
||
|
||
// NextAllocation is the allocation that this allocation is being replaced by
|
||
NextAllocation string
|
||
|
||
// DeploymentID identifies an allocation as being created from a
|
||
// particular deployment
|
||
DeploymentID string
|
||
|
||
// DeploymentStatus captures the status of the allocation as part of the
|
||
// given deployment
|
||
DeploymentStatus *AllocDeploymentStatus
|
||
|
||
// RescheduleTrackers captures details of previous reschedule attempts of the allocation
|
||
RescheduleTracker *RescheduleTracker
|
||
|
||
// FollowupEvalID captures a follow up evaluation created to handle a failed allocation
|
||
// that can be rescheduled in the future
|
||
FollowupEvalID string
|
||
|
||
// PreemptedAllocations captures IDs of any allocations that were preempted
|
||
// in order to place this allocation
|
||
PreemptedAllocations []string
|
||
|
||
// PreemptedByAllocation tracks the alloc ID of the allocation that caused this allocation
|
||
// to stop running because it got preempted
|
||
PreemptedByAllocation string
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
|
||
// AllocModifyIndex is not updated when the client updates allocations. This
|
||
// lets the client pull only the allocs updated by the server.
|
||
AllocModifyIndex uint64
|
||
|
||
// CreateTime is the time the allocation has finished scheduling and been
|
||
// verified by the plan applier.
|
||
CreateTime int64
|
||
|
||
// ModifyTime is the time the allocation was last updated.
|
||
ModifyTime int64
|
||
}
|
||
|
||
// Index returns the index of the allocation. If the allocation is from a task
|
||
// group with count greater than 1, there will be multiple allocations for it.
|
||
func (a *Allocation) Index() uint {
|
||
l := len(a.Name)
|
||
prefix := len(a.JobID) + len(a.TaskGroup) + 2
|
||
if l <= 3 || l <= prefix {
|
||
return uint(0)
|
||
}
|
||
|
||
strNum := a.Name[prefix : len(a.Name)-1]
|
||
num, _ := strconv.Atoi(strNum)
|
||
return uint(num)
|
||
}
|
||
|
||
// Copy provides a copy of the allocation and deep copies the job
|
||
func (a *Allocation) Copy() *Allocation {
|
||
return a.copyImpl(true)
|
||
}
|
||
|
||
// CopySkipJob provides a copy of the allocation but doesn't deep copy the job
|
||
func (a *Allocation) CopySkipJob() *Allocation {
|
||
return a.copyImpl(false)
|
||
}
|
||
|
||
func (a *Allocation) copyImpl(job bool) *Allocation {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
na := new(Allocation)
|
||
*na = *a
|
||
|
||
if job {
|
||
na.Job = na.Job.Copy()
|
||
}
|
||
|
||
na.AllocatedResources = na.AllocatedResources.Copy()
|
||
na.Resources = na.Resources.Copy()
|
||
na.SharedResources = na.SharedResources.Copy()
|
||
|
||
if a.TaskResources != nil {
|
||
tr := make(map[string]*Resources, len(na.TaskResources))
|
||
for task, resource := range na.TaskResources {
|
||
tr[task] = resource.Copy()
|
||
}
|
||
na.TaskResources = tr
|
||
}
|
||
|
||
na.Metrics = na.Metrics.Copy()
|
||
na.DeploymentStatus = na.DeploymentStatus.Copy()
|
||
|
||
if a.TaskStates != nil {
|
||
ts := make(map[string]*TaskState, len(na.TaskStates))
|
||
for task, state := range na.TaskStates {
|
||
ts[task] = state.Copy()
|
||
}
|
||
na.TaskStates = ts
|
||
}
|
||
|
||
na.RescheduleTracker = a.RescheduleTracker.Copy()
|
||
na.PreemptedAllocations = helper.CopySliceString(a.PreemptedAllocations)
|
||
return na
|
||
}
|
||
|
||
// TerminalStatus returns if the desired or actual status is terminal and
|
||
// will no longer transition.
|
||
func (a *Allocation) TerminalStatus() bool {
|
||
// First check the desired state and if that isn't terminal, check client
|
||
// state.
|
||
return a.ServerTerminalStatus() || a.ClientTerminalStatus()
|
||
}
|
||
|
||
// ServerTerminalStatus returns true if the desired state of the allocation is terminal
|
||
func (a *Allocation) ServerTerminalStatus() bool {
|
||
switch a.DesiredStatus {
|
||
case AllocDesiredStatusStop, AllocDesiredStatusEvict:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// ClientTerminalStatus returns if the client status is terminal and will no longer transition
|
||
func (a *Allocation) ClientTerminalStatus() bool {
|
||
switch a.ClientStatus {
|
||
case AllocClientStatusComplete, AllocClientStatusFailed, AllocClientStatusLost:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// ShouldReschedule returns if the allocation is eligible to be rescheduled according
|
||
// to its status and ReschedulePolicy given its failure time
|
||
func (a *Allocation) ShouldReschedule(reschedulePolicy *ReschedulePolicy, failTime time.Time) bool {
|
||
// First check the desired state
|
||
switch a.DesiredStatus {
|
||
case AllocDesiredStatusStop, AllocDesiredStatusEvict:
|
||
return false
|
||
default:
|
||
}
|
||
switch a.ClientStatus {
|
||
case AllocClientStatusFailed:
|
||
return a.RescheduleEligible(reschedulePolicy, failTime)
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
// RescheduleEligible returns if the allocation is eligible to be rescheduled according
|
||
// to its ReschedulePolicy and the current state of its reschedule trackers
|
||
func (a *Allocation) RescheduleEligible(reschedulePolicy *ReschedulePolicy, failTime time.Time) bool {
|
||
if reschedulePolicy == nil {
|
||
return false
|
||
}
|
||
attempts := reschedulePolicy.Attempts
|
||
interval := reschedulePolicy.Interval
|
||
enabled := attempts > 0 || reschedulePolicy.Unlimited
|
||
if !enabled {
|
||
return false
|
||
}
|
||
if reschedulePolicy.Unlimited {
|
||
return true
|
||
}
|
||
// Early return true if there are no attempts yet and the number of allowed attempts is > 0
|
||
if (a.RescheduleTracker == nil || len(a.RescheduleTracker.Events) == 0) && attempts > 0 {
|
||
return true
|
||
}
|
||
attempted := 0
|
||
for j := len(a.RescheduleTracker.Events) - 1; j >= 0; j-- {
|
||
lastAttempt := a.RescheduleTracker.Events[j].RescheduleTime
|
||
timeDiff := failTime.UTC().UnixNano() - lastAttempt
|
||
if timeDiff < interval.Nanoseconds() {
|
||
attempted += 1
|
||
}
|
||
}
|
||
return attempted < attempts
|
||
}
|
||
|
||
// LastEventTime is the time of the last task event in the allocation.
|
||
// It is used to determine allocation failure time. If the FinishedAt field
|
||
// is not set, the alloc's modify time is used
|
||
func (a *Allocation) LastEventTime() time.Time {
|
||
var lastEventTime time.Time
|
||
if a.TaskStates != nil {
|
||
for _, s := range a.TaskStates {
|
||
if lastEventTime.IsZero() || s.FinishedAt.After(lastEventTime) {
|
||
lastEventTime = s.FinishedAt
|
||
}
|
||
}
|
||
}
|
||
|
||
if lastEventTime.IsZero() {
|
||
return time.Unix(0, a.ModifyTime).UTC()
|
||
}
|
||
return lastEventTime
|
||
}
|
||
|
||
// ReschedulePolicy returns the reschedule policy based on the task group
|
||
func (a *Allocation) ReschedulePolicy() *ReschedulePolicy {
|
||
tg := a.Job.LookupTaskGroup(a.TaskGroup)
|
||
if tg == nil {
|
||
return nil
|
||
}
|
||
return tg.ReschedulePolicy
|
||
}
|
||
|
||
// NextRescheduleTime returns a time on or after which the allocation is eligible to be rescheduled,
|
||
// and whether the next reschedule time is within policy's interval if the policy doesn't allow unlimited reschedules
|
||
func (a *Allocation) NextRescheduleTime() (time.Time, bool) {
|
||
failTime := a.LastEventTime()
|
||
reschedulePolicy := a.ReschedulePolicy()
|
||
if a.DesiredStatus == AllocDesiredStatusStop || a.ClientStatus != AllocClientStatusFailed || failTime.IsZero() || reschedulePolicy == nil {
|
||
return time.Time{}, false
|
||
}
|
||
|
||
nextDelay := a.NextDelay()
|
||
nextRescheduleTime := failTime.Add(nextDelay)
|
||
rescheduleEligible := reschedulePolicy.Unlimited || (reschedulePolicy.Attempts > 0 && a.RescheduleTracker == nil)
|
||
if reschedulePolicy.Attempts > 0 && a.RescheduleTracker != nil && a.RescheduleTracker.Events != nil {
|
||
// Check for eligibility based on the interval if max attempts is set
|
||
attempted := 0
|
||
for j := len(a.RescheduleTracker.Events) - 1; j >= 0; j-- {
|
||
lastAttempt := a.RescheduleTracker.Events[j].RescheduleTime
|
||
timeDiff := failTime.UTC().UnixNano() - lastAttempt
|
||
if timeDiff < reschedulePolicy.Interval.Nanoseconds() {
|
||
attempted += 1
|
||
}
|
||
}
|
||
rescheduleEligible = attempted < reschedulePolicy.Attempts && nextDelay < reschedulePolicy.Interval
|
||
}
|
||
return nextRescheduleTime, rescheduleEligible
|
||
}
|
||
|
||
// NextDelay returns a duration after which the allocation can be rescheduled.
|
||
// It is calculated according to the delay function and previous reschedule attempts.
|
||
func (a *Allocation) NextDelay() time.Duration {
|
||
policy := a.ReschedulePolicy()
|
||
// Can be nil if the task group was updated to remove its reschedule policy
|
||
if policy == nil {
|
||
return 0
|
||
}
|
||
delayDur := policy.Delay
|
||
if a.RescheduleTracker == nil || a.RescheduleTracker.Events == nil || len(a.RescheduleTracker.Events) == 0 {
|
||
return delayDur
|
||
}
|
||
events := a.RescheduleTracker.Events
|
||
switch policy.DelayFunction {
|
||
case "exponential":
|
||
delayDur = a.RescheduleTracker.Events[len(a.RescheduleTracker.Events)-1].Delay * 2
|
||
case "fibonacci":
|
||
if len(events) >= 2 {
|
||
fibN1Delay := events[len(events)-1].Delay
|
||
fibN2Delay := events[len(events)-2].Delay
|
||
// Handle reset of delay ceiling which should cause
|
||
// a new series to start
|
||
if fibN2Delay == policy.MaxDelay && fibN1Delay == policy.Delay {
|
||
delayDur = fibN1Delay
|
||
} else {
|
||
delayDur = fibN1Delay + fibN2Delay
|
||
}
|
||
}
|
||
default:
|
||
return delayDur
|
||
}
|
||
if policy.MaxDelay > 0 && delayDur > policy.MaxDelay {
|
||
delayDur = policy.MaxDelay
|
||
// check if delay needs to be reset
|
||
|
||
lastRescheduleEvent := a.RescheduleTracker.Events[len(a.RescheduleTracker.Events)-1]
|
||
timeDiff := a.LastEventTime().UTC().UnixNano() - lastRescheduleEvent.RescheduleTime
|
||
if timeDiff > delayDur.Nanoseconds() {
|
||
delayDur = policy.Delay
|
||
}
|
||
|
||
}
|
||
|
||
return delayDur
|
||
}
|
||
|
||
// Terminated returns if the allocation is in a terminal state on a client.
|
||
func (a *Allocation) Terminated() bool {
|
||
if a.ClientStatus == AllocClientStatusFailed ||
|
||
a.ClientStatus == AllocClientStatusComplete ||
|
||
a.ClientStatus == AllocClientStatusLost {
|
||
return true
|
||
}
|
||
return false
|
||
}
|
||
|
||
// RanSuccessfully returns whether the client has ran the allocation and all
|
||
// tasks finished successfully. Critically this function returns whether the
|
||
// allocation has ran to completion and not just that the alloc has converged to
|
||
// its desired state. That is to say that a batch allocation must have finished
|
||
// with exit code 0 on all task groups. This doesn't really have meaning on a
|
||
// non-batch allocation because a service and system allocation should not
|
||
// finish.
|
||
func (a *Allocation) RanSuccessfully() bool {
|
||
// Handle the case the client hasn't started the allocation.
|
||
if len(a.TaskStates) == 0 {
|
||
return false
|
||
}
|
||
|
||
// Check to see if all the tasks finished successfully in the allocation
|
||
allSuccess := true
|
||
for _, state := range a.TaskStates {
|
||
allSuccess = allSuccess && state.Successful()
|
||
}
|
||
|
||
return allSuccess
|
||
}
|
||
|
||
// ShouldMigrate returns if the allocation needs data migration
|
||
func (a *Allocation) ShouldMigrate() bool {
|
||
if a.PreviousAllocation == "" {
|
||
return false
|
||
}
|
||
|
||
if a.DesiredStatus == AllocDesiredStatusStop || a.DesiredStatus == AllocDesiredStatusEvict {
|
||
return false
|
||
}
|
||
|
||
tg := a.Job.LookupTaskGroup(a.TaskGroup)
|
||
|
||
// if the task group is nil or the ephemeral disk block isn't present then
|
||
// we won't migrate
|
||
if tg == nil || tg.EphemeralDisk == nil {
|
||
return false
|
||
}
|
||
|
||
// We won't migrate any data is the user hasn't enabled migration or the
|
||
// disk is not marked as sticky
|
||
if !tg.EphemeralDisk.Migrate || !tg.EphemeralDisk.Sticky {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
// SetEventDisplayMessage populates the display message if its not already set,
|
||
// a temporary fix to handle old allocations that don't have it.
|
||
// This method will be removed in a future release.
|
||
func (a *Allocation) SetEventDisplayMessages() {
|
||
setDisplayMsg(a.TaskStates)
|
||
}
|
||
|
||
// COMPAT(0.11): Remove in 0.11
|
||
// ComparableResources returns the resouces on the allocation
|
||
// handling upgrade paths. After 0.11 calls to this should be replaced with:
|
||
// alloc.AllocatedResources.Comparable()
|
||
func (a *Allocation) ComparableResources() *ComparableResources {
|
||
// ALloc already has 0.9+ behavior
|
||
if a.AllocatedResources != nil {
|
||
return a.AllocatedResources.Comparable()
|
||
}
|
||
|
||
var resources *Resources
|
||
if a.Resources != nil {
|
||
resources = a.Resources
|
||
} else if a.TaskResources != nil {
|
||
resources = new(Resources)
|
||
resources.Add(a.SharedResources)
|
||
for _, taskResource := range a.TaskResources {
|
||
resources.Add(taskResource)
|
||
}
|
||
}
|
||
|
||
// Upgrade path
|
||
return &ComparableResources{
|
||
Flattened: AllocatedTaskResources{
|
||
Cpu: AllocatedCpuResources{
|
||
CpuShares: int64(resources.CPU),
|
||
},
|
||
Memory: AllocatedMemoryResources{
|
||
MemoryMB: int64(resources.MemoryMB),
|
||
},
|
||
Networks: resources.Networks,
|
||
},
|
||
Shared: AllocatedSharedResources{
|
||
DiskMB: int64(resources.DiskMB),
|
||
},
|
||
}
|
||
}
|
||
|
||
// LookupTask by name from the Allocation. Returns nil if the Job is not set, the
|
||
// TaskGroup does not exist, or the task name cannot be found.
|
||
func (a *Allocation) LookupTask(name string) *Task {
|
||
if a.Job == nil {
|
||
return nil
|
||
}
|
||
|
||
tg := a.Job.LookupTaskGroup(a.TaskGroup)
|
||
if tg == nil {
|
||
return nil
|
||
}
|
||
|
||
return tg.LookupTask(name)
|
||
}
|
||
|
||
// Stub returns a list stub for the allocation
|
||
func (a *Allocation) Stub() *AllocListStub {
|
||
return &AllocListStub{
|
||
ID: a.ID,
|
||
EvalID: a.EvalID,
|
||
Name: a.Name,
|
||
Namespace: a.Namespace,
|
||
NodeID: a.NodeID,
|
||
NodeName: a.NodeName,
|
||
JobID: a.JobID,
|
||
JobType: a.Job.Type,
|
||
JobVersion: a.Job.Version,
|
||
TaskGroup: a.TaskGroup,
|
||
DesiredStatus: a.DesiredStatus,
|
||
DesiredDescription: a.DesiredDescription,
|
||
ClientStatus: a.ClientStatus,
|
||
ClientDescription: a.ClientDescription,
|
||
DesiredTransition: a.DesiredTransition,
|
||
TaskStates: a.TaskStates,
|
||
DeploymentStatus: a.DeploymentStatus,
|
||
FollowupEvalID: a.FollowupEvalID,
|
||
RescheduleTracker: a.RescheduleTracker,
|
||
PreemptedAllocations: a.PreemptedAllocations,
|
||
PreemptedByAllocation: a.PreemptedByAllocation,
|
||
CreateIndex: a.CreateIndex,
|
||
ModifyIndex: a.ModifyIndex,
|
||
CreateTime: a.CreateTime,
|
||
ModifyTime: a.ModifyTime,
|
||
}
|
||
}
|
||
|
||
// AllocationDiff converts an Allocation type to an AllocationDiff type
|
||
// If at any time, modification are made to AllocationDiff so that an
|
||
// Allocation can no longer be safely converted to AllocationDiff,
|
||
// this method should be changed accordingly.
|
||
func (a *Allocation) AllocationDiff() *AllocationDiff {
|
||
return (*AllocationDiff)(a)
|
||
}
|
||
|
||
// AllocationDiff is another named type for Allocation (to use the same fields),
|
||
// which is used to represent the delta for an Allocation. If you need a method
|
||
// defined on the al
|
||
type AllocationDiff Allocation
|
||
|
||
// AllocListStub is used to return a subset of alloc information
|
||
type AllocListStub struct {
|
||
ID string
|
||
EvalID string
|
||
Name string
|
||
Namespace string
|
||
NodeID string
|
||
NodeName string
|
||
JobID string
|
||
JobType string
|
||
JobVersion uint64
|
||
TaskGroup string
|
||
DesiredStatus string
|
||
DesiredDescription string
|
||
ClientStatus string
|
||
ClientDescription string
|
||
DesiredTransition DesiredTransition
|
||
TaskStates map[string]*TaskState
|
||
DeploymentStatus *AllocDeploymentStatus
|
||
FollowupEvalID string
|
||
RescheduleTracker *RescheduleTracker
|
||
PreemptedAllocations []string
|
||
PreemptedByAllocation string
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
CreateTime int64
|
||
ModifyTime int64
|
||
}
|
||
|
||
// SetEventDisplayMessage populates the display message if its not already set,
|
||
// a temporary fix to handle old allocations that don't have it.
|
||
// This method will be removed in a future release.
|
||
func (a *AllocListStub) SetEventDisplayMessages() {
|
||
setDisplayMsg(a.TaskStates)
|
||
}
|
||
|
||
func setDisplayMsg(taskStates map[string]*TaskState) {
|
||
if taskStates != nil {
|
||
for _, taskState := range taskStates {
|
||
for _, event := range taskState.Events {
|
||
event.PopulateEventDisplayMessage()
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// AllocMetric is used to track various metrics while attempting
|
||
// to make an allocation. These are used to debug a job, or to better
|
||
// understand the pressure within the system.
|
||
type AllocMetric struct {
|
||
// NodesEvaluated is the number of nodes that were evaluated
|
||
NodesEvaluated int
|
||
|
||
// NodesFiltered is the number of nodes filtered due to a constraint
|
||
NodesFiltered int
|
||
|
||
// NodesAvailable is the number of nodes available for evaluation per DC.
|
||
NodesAvailable map[string]int
|
||
|
||
// ClassFiltered is the number of nodes filtered by class
|
||
ClassFiltered map[string]int
|
||
|
||
// ConstraintFiltered is the number of failures caused by constraint
|
||
ConstraintFiltered map[string]int
|
||
|
||
// NodesExhausted is the number of nodes skipped due to being
|
||
// exhausted of at least one resource
|
||
NodesExhausted int
|
||
|
||
// ClassExhausted is the number of nodes exhausted by class
|
||
ClassExhausted map[string]int
|
||
|
||
// DimensionExhausted provides the count by dimension or reason
|
||
DimensionExhausted map[string]int
|
||
|
||
// QuotaExhausted provides the exhausted dimensions
|
||
QuotaExhausted []string
|
||
|
||
// Scores is the scores of the final few nodes remaining
|
||
// for placement. The top score is typically selected.
|
||
// Deprecated: Replaced by ScoreMetaData in Nomad 0.9
|
||
Scores map[string]float64
|
||
|
||
// ScoreMetaData is a slice of top scoring nodes displayed in the CLI
|
||
ScoreMetaData []*NodeScoreMeta
|
||
|
||
// nodeScoreMeta is used to keep scores for a single node id. It is cleared out after
|
||
// we receive normalized score during the last step of the scoring stack.
|
||
nodeScoreMeta *NodeScoreMeta
|
||
|
||
// topScores is used to maintain a heap of the top K nodes with
|
||
// the highest normalized score
|
||
topScores *kheap.ScoreHeap
|
||
|
||
// AllocationTime is a measure of how long the allocation
|
||
// attempt took. This can affect performance and SLAs.
|
||
AllocationTime time.Duration
|
||
|
||
// CoalescedFailures indicates the number of other
|
||
// allocations that were coalesced into this failed allocation.
|
||
// This is to prevent creating many failed allocations for a
|
||
// single task group.
|
||
CoalescedFailures int
|
||
}
|
||
|
||
func (a *AllocMetric) Copy() *AllocMetric {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
na := new(AllocMetric)
|
||
*na = *a
|
||
na.NodesAvailable = helper.CopyMapStringInt(na.NodesAvailable)
|
||
na.ClassFiltered = helper.CopyMapStringInt(na.ClassFiltered)
|
||
na.ConstraintFiltered = helper.CopyMapStringInt(na.ConstraintFiltered)
|
||
na.ClassExhausted = helper.CopyMapStringInt(na.ClassExhausted)
|
||
na.DimensionExhausted = helper.CopyMapStringInt(na.DimensionExhausted)
|
||
na.QuotaExhausted = helper.CopySliceString(na.QuotaExhausted)
|
||
na.Scores = helper.CopyMapStringFloat64(na.Scores)
|
||
na.ScoreMetaData = CopySliceNodeScoreMeta(na.ScoreMetaData)
|
||
return na
|
||
}
|
||
|
||
func (a *AllocMetric) EvaluateNode() {
|
||
a.NodesEvaluated += 1
|
||
}
|
||
|
||
func (a *AllocMetric) FilterNode(node *Node, constraint string) {
|
||
a.NodesFiltered += 1
|
||
if node != nil && node.NodeClass != "" {
|
||
if a.ClassFiltered == nil {
|
||
a.ClassFiltered = make(map[string]int)
|
||
}
|
||
a.ClassFiltered[node.NodeClass] += 1
|
||
}
|
||
if constraint != "" {
|
||
if a.ConstraintFiltered == nil {
|
||
a.ConstraintFiltered = make(map[string]int)
|
||
}
|
||
a.ConstraintFiltered[constraint] += 1
|
||
}
|
||
}
|
||
|
||
func (a *AllocMetric) ExhaustedNode(node *Node, dimension string) {
|
||
a.NodesExhausted += 1
|
||
if node != nil && node.NodeClass != "" {
|
||
if a.ClassExhausted == nil {
|
||
a.ClassExhausted = make(map[string]int)
|
||
}
|
||
a.ClassExhausted[node.NodeClass] += 1
|
||
}
|
||
if dimension != "" {
|
||
if a.DimensionExhausted == nil {
|
||
a.DimensionExhausted = make(map[string]int)
|
||
}
|
||
a.DimensionExhausted[dimension] += 1
|
||
}
|
||
}
|
||
|
||
func (a *AllocMetric) ExhaustQuota(dimensions []string) {
|
||
if a.QuotaExhausted == nil {
|
||
a.QuotaExhausted = make([]string, 0, len(dimensions))
|
||
}
|
||
|
||
a.QuotaExhausted = append(a.QuotaExhausted, dimensions...)
|
||
}
|
||
|
||
// ScoreNode is used to gather top K scoring nodes in a heap
|
||
func (a *AllocMetric) ScoreNode(node *Node, name string, score float64) {
|
||
// Create nodeScoreMeta lazily if its the first time or if its a new node
|
||
if a.nodeScoreMeta == nil || a.nodeScoreMeta.NodeID != node.ID {
|
||
a.nodeScoreMeta = &NodeScoreMeta{
|
||
NodeID: node.ID,
|
||
Scores: make(map[string]float64),
|
||
}
|
||
}
|
||
if name == NormScorerName {
|
||
a.nodeScoreMeta.NormScore = score
|
||
// Once we have the normalized score we can push to the heap
|
||
// that tracks top K by normalized score
|
||
|
||
// Create the heap if its not there already
|
||
if a.topScores == nil {
|
||
a.topScores = kheap.NewScoreHeap(MaxRetainedNodeScores)
|
||
}
|
||
heap.Push(a.topScores, a.nodeScoreMeta)
|
||
|
||
// Clear out this entry because its now in the heap
|
||
a.nodeScoreMeta = nil
|
||
} else {
|
||
a.nodeScoreMeta.Scores[name] = score
|
||
}
|
||
}
|
||
|
||
// PopulateScoreMetaData populates a map of scorer to scoring metadata
|
||
// The map is populated by popping elements from a heap of top K scores
|
||
// maintained per scorer
|
||
func (a *AllocMetric) PopulateScoreMetaData() {
|
||
if a.topScores == nil {
|
||
return
|
||
}
|
||
|
||
if a.ScoreMetaData == nil {
|
||
a.ScoreMetaData = make([]*NodeScoreMeta, a.topScores.Len())
|
||
}
|
||
heapItems := a.topScores.GetItemsReverse()
|
||
for i, item := range heapItems {
|
||
a.ScoreMetaData[i] = item.(*NodeScoreMeta)
|
||
}
|
||
}
|
||
|
||
// NodeScoreMeta captures scoring meta data derived from
|
||
// different scoring factors.
|
||
type NodeScoreMeta struct {
|
||
NodeID string
|
||
Scores map[string]float64
|
||
NormScore float64
|
||
}
|
||
|
||
func (s *NodeScoreMeta) Copy() *NodeScoreMeta {
|
||
if s == nil {
|
||
return nil
|
||
}
|
||
ns := new(NodeScoreMeta)
|
||
*ns = *s
|
||
return ns
|
||
}
|
||
|
||
func (s *NodeScoreMeta) String() string {
|
||
return fmt.Sprintf("%s %f %v", s.NodeID, s.NormScore, s.Scores)
|
||
}
|
||
|
||
func (s *NodeScoreMeta) Score() float64 {
|
||
return s.NormScore
|
||
}
|
||
|
||
func (s *NodeScoreMeta) Data() interface{} {
|
||
return s
|
||
}
|
||
|
||
// AllocDeploymentStatus captures the status of the allocation as part of the
|
||
// deployment. This can include things like if the allocation has been marked as
|
||
// healthy.
|
||
type AllocDeploymentStatus struct {
|
||
// Healthy marks whether the allocation has been marked healthy or unhealthy
|
||
// as part of a deployment. It can be unset if it has neither been marked
|
||
// healthy or unhealthy.
|
||
Healthy *bool
|
||
|
||
// Timestamp is the time at which the health status was set.
|
||
Timestamp time.Time
|
||
|
||
// Canary marks whether the allocation is a canary or not. A canary that has
|
||
// been promoted will have this field set to false.
|
||
Canary bool
|
||
|
||
// ModifyIndex is the raft index in which the deployment status was last
|
||
// changed.
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// HasHealth returns true if the allocation has its health set.
|
||
func (a *AllocDeploymentStatus) HasHealth() bool {
|
||
return a != nil && a.Healthy != nil
|
||
}
|
||
|
||
// IsHealthy returns if the allocation is marked as healthy as part of a
|
||
// deployment
|
||
func (a *AllocDeploymentStatus) IsHealthy() bool {
|
||
if a == nil {
|
||
return false
|
||
}
|
||
|
||
return a.Healthy != nil && *a.Healthy
|
||
}
|
||
|
||
// IsUnhealthy returns if the allocation is marked as unhealthy as part of a
|
||
// deployment
|
||
func (a *AllocDeploymentStatus) IsUnhealthy() bool {
|
||
if a == nil {
|
||
return false
|
||
}
|
||
|
||
return a.Healthy != nil && !*a.Healthy
|
||
}
|
||
|
||
// IsCanary returns if the allocation is marked as a canary
|
||
func (a *AllocDeploymentStatus) IsCanary() bool {
|
||
if a == nil {
|
||
return false
|
||
}
|
||
|
||
return a.Canary
|
||
}
|
||
|
||
func (a *AllocDeploymentStatus) Copy() *AllocDeploymentStatus {
|
||
if a == nil {
|
||
return nil
|
||
}
|
||
|
||
c := new(AllocDeploymentStatus)
|
||
*c = *a
|
||
|
||
if a.Healthy != nil {
|
||
c.Healthy = helper.BoolToPtr(*a.Healthy)
|
||
}
|
||
|
||
return c
|
||
}
|
||
|
||
const (
|
||
EvalStatusBlocked = "blocked"
|
||
EvalStatusPending = "pending"
|
||
EvalStatusComplete = "complete"
|
||
EvalStatusFailed = "failed"
|
||
EvalStatusCancelled = "canceled"
|
||
)
|
||
|
||
const (
|
||
EvalTriggerJobRegister = "job-register"
|
||
EvalTriggerJobDeregister = "job-deregister"
|
||
EvalTriggerPeriodicJob = "periodic-job"
|
||
EvalTriggerNodeDrain = "node-drain"
|
||
EvalTriggerNodeUpdate = "node-update"
|
||
EvalTriggerAllocStop = "alloc-stop"
|
||
EvalTriggerScheduled = "scheduled"
|
||
EvalTriggerRollingUpdate = "rolling-update"
|
||
EvalTriggerDeploymentWatcher = "deployment-watcher"
|
||
EvalTriggerFailedFollowUp = "failed-follow-up"
|
||
EvalTriggerMaxPlans = "max-plan-attempts"
|
||
EvalTriggerRetryFailedAlloc = "alloc-failure"
|
||
EvalTriggerQueuedAllocs = "queued-allocs"
|
||
EvalTriggerPreemption = "preemption"
|
||
)
|
||
|
||
const (
|
||
// CoreJobEvalGC is used for the garbage collection of evaluations
|
||
// and allocations. We periodically scan evaluations in a terminal state,
|
||
// in which all the corresponding allocations are also terminal. We
|
||
// delete these out of the system to bound the state.
|
||
CoreJobEvalGC = "eval-gc"
|
||
|
||
// CoreJobNodeGC is used for the garbage collection of failed nodes.
|
||
// We periodically scan nodes in a terminal state, and if they have no
|
||
// corresponding allocations we delete these out of the system.
|
||
CoreJobNodeGC = "node-gc"
|
||
|
||
// CoreJobJobGC is used for the garbage collection of eligible jobs. We
|
||
// periodically scan garbage collectible jobs and check if both their
|
||
// evaluations and allocations are terminal. If so, we delete these out of
|
||
// the system.
|
||
CoreJobJobGC = "job-gc"
|
||
|
||
// CoreJobDeploymentGC is used for the garbage collection of eligible
|
||
// deployments. We periodically scan garbage collectible deployments and
|
||
// check if they are terminal. If so, we delete these out of the system.
|
||
CoreJobDeploymentGC = "deployment-gc"
|
||
|
||
// CoreJobForceGC is used to force garbage collection of all GCable objects.
|
||
CoreJobForceGC = "force-gc"
|
||
)
|
||
|
||
// Evaluation is used anytime we need to apply business logic as a result
|
||
// of a change to our desired state (job specification) or the emergent state
|
||
// (registered nodes). When the inputs change, we need to "evaluate" them,
|
||
// potentially taking action (allocation of work) or doing nothing if the state
|
||
// of the world does not require it.
|
||
type Evaluation struct {
|
||
// msgpack omit empty fields during serialization
|
||
_struct bool `codec:",omitempty"` // nolint: structcheck
|
||
|
||
// ID is a randomly generated UUID used for this evaluation. This
|
||
// is assigned upon the creation of the evaluation.
|
||
ID string
|
||
|
||
// Namespace is the namespace the evaluation is created in
|
||
Namespace string
|
||
|
||
// Priority is used to control scheduling importance and if this job
|
||
// can preempt other jobs.
|
||
Priority int
|
||
|
||
// Type is used to control which schedulers are available to handle
|
||
// this evaluation.
|
||
Type string
|
||
|
||
// TriggeredBy is used to give some insight into why this Eval
|
||
// was created. (Job change, node failure, alloc failure, etc).
|
||
TriggeredBy string
|
||
|
||
// JobID is the job this evaluation is scoped to. Evaluations cannot
|
||
// be run in parallel for a given JobID, so we serialize on this.
|
||
JobID string
|
||
|
||
// JobModifyIndex is the modify index of the job at the time
|
||
// the evaluation was created
|
||
JobModifyIndex uint64
|
||
|
||
// NodeID is the node that was affected triggering the evaluation.
|
||
NodeID string
|
||
|
||
// NodeModifyIndex is the modify index of the node at the time
|
||
// the evaluation was created
|
||
NodeModifyIndex uint64
|
||
|
||
// DeploymentID is the ID of the deployment that triggered the evaluation.
|
||
DeploymentID string
|
||
|
||
// Status of the evaluation
|
||
Status string
|
||
|
||
// StatusDescription is meant to provide more human useful information
|
||
StatusDescription string
|
||
|
||
// Wait is a minimum wait time for running the eval. This is used to
|
||
// support a rolling upgrade in versions prior to 0.7.0
|
||
// Deprecated
|
||
Wait time.Duration
|
||
|
||
// WaitUntil is the time when this eval should be run. This is used to
|
||
// supported delayed rescheduling of failed allocations
|
||
WaitUntil time.Time
|
||
|
||
// NextEval is the evaluation ID for the eval created to do a followup.
|
||
// This is used to support rolling upgrades and failed-follow-up evals, where
|
||
// we need a chain of evaluations.
|
||
NextEval string
|
||
|
||
// PreviousEval is the evaluation ID for the eval creating this one to do a followup.
|
||
// This is used to support rolling upgrades and failed-follow-up evals, where
|
||
// we need a chain of evaluations.
|
||
PreviousEval string
|
||
|
||
// BlockedEval is the evaluation ID for a created blocked eval. A
|
||
// blocked eval will be created if all allocations could not be placed due
|
||
// to constraints or lacking resources.
|
||
BlockedEval string
|
||
|
||
// FailedTGAllocs are task groups which have allocations that could not be
|
||
// made, but the metrics are persisted so that the user can use the feedback
|
||
// to determine the cause.
|
||
FailedTGAllocs map[string]*AllocMetric
|
||
|
||
// ClassEligibility tracks computed node classes that have been explicitly
|
||
// marked as eligible or ineligible.
|
||
ClassEligibility map[string]bool
|
||
|
||
// QuotaLimitReached marks whether a quota limit was reached for the
|
||
// evaluation.
|
||
QuotaLimitReached string
|
||
|
||
// EscapedComputedClass marks whether the job has constraints that are not
|
||
// captured by computed node classes.
|
||
EscapedComputedClass bool
|
||
|
||
// AnnotatePlan triggers the scheduler to provide additional annotations
|
||
// during the evaluation. This should not be set during normal operations.
|
||
AnnotatePlan bool
|
||
|
||
// QueuedAllocations is the number of unplaced allocations at the time the
|
||
// evaluation was processed. The map is keyed by Task Group names.
|
||
QueuedAllocations map[string]int
|
||
|
||
// LeaderACL provides the ACL token to when issuing RPCs back to the
|
||
// leader. This will be a valid management token as long as the leader is
|
||
// active. This should not ever be exposed via the API.
|
||
LeaderACL string
|
||
|
||
// SnapshotIndex is the Raft index of the snapshot used to process the
|
||
// evaluation. The index will either be set when it has gone through the
|
||
// scheduler or if a blocked evaluation is being created. The index is set
|
||
// in this case so we can determine if an early unblocking is required since
|
||
// capacity has changed since the evaluation was created. This can result in
|
||
// the SnapshotIndex being less than the CreateIndex.
|
||
SnapshotIndex uint64
|
||
|
||
// Raft Indexes
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// TerminalStatus returns if the current status is terminal and
|
||
// will no longer transition.
|
||
func (e *Evaluation) TerminalStatus() bool {
|
||
switch e.Status {
|
||
case EvalStatusComplete, EvalStatusFailed, EvalStatusCancelled:
|
||
return true
|
||
default:
|
||
return false
|
||
}
|
||
}
|
||
|
||
func (e *Evaluation) GoString() string {
|
||
return fmt.Sprintf("<Eval %q JobID: %q Namespace: %q>", e.ID, e.JobID, e.Namespace)
|
||
}
|
||
|
||
func (e *Evaluation) Copy() *Evaluation {
|
||
if e == nil {
|
||
return nil
|
||
}
|
||
ne := new(Evaluation)
|
||
*ne = *e
|
||
|
||
// Copy ClassEligibility
|
||
if e.ClassEligibility != nil {
|
||
classes := make(map[string]bool, len(e.ClassEligibility))
|
||
for class, elig := range e.ClassEligibility {
|
||
classes[class] = elig
|
||
}
|
||
ne.ClassEligibility = classes
|
||
}
|
||
|
||
// Copy FailedTGAllocs
|
||
if e.FailedTGAllocs != nil {
|
||
failedTGs := make(map[string]*AllocMetric, len(e.FailedTGAllocs))
|
||
for tg, metric := range e.FailedTGAllocs {
|
||
failedTGs[tg] = metric.Copy()
|
||
}
|
||
ne.FailedTGAllocs = failedTGs
|
||
}
|
||
|
||
// Copy queued allocations
|
||
if e.QueuedAllocations != nil {
|
||
queuedAllocations := make(map[string]int, len(e.QueuedAllocations))
|
||
for tg, num := range e.QueuedAllocations {
|
||
queuedAllocations[tg] = num
|
||
}
|
||
ne.QueuedAllocations = queuedAllocations
|
||
}
|
||
|
||
return ne
|
||
}
|
||
|
||
// ShouldEnqueue checks if a given evaluation should be enqueued into the
|
||
// eval_broker
|
||
func (e *Evaluation) ShouldEnqueue() bool {
|
||
switch e.Status {
|
||
case EvalStatusPending:
|
||
return true
|
||
case EvalStatusComplete, EvalStatusFailed, EvalStatusBlocked, EvalStatusCancelled:
|
||
return false
|
||
default:
|
||
panic(fmt.Sprintf("unhandled evaluation (%s) status %s", e.ID, e.Status))
|
||
}
|
||
}
|
||
|
||
// ShouldBlock checks if a given evaluation should be entered into the blocked
|
||
// eval tracker.
|
||
func (e *Evaluation) ShouldBlock() bool {
|
||
switch e.Status {
|
||
case EvalStatusBlocked:
|
||
return true
|
||
case EvalStatusComplete, EvalStatusFailed, EvalStatusPending, EvalStatusCancelled:
|
||
return false
|
||
default:
|
||
panic(fmt.Sprintf("unhandled evaluation (%s) status %s", e.ID, e.Status))
|
||
}
|
||
}
|
||
|
||
// MakePlan is used to make a plan from the given evaluation
|
||
// for a given Job
|
||
func (e *Evaluation) MakePlan(j *Job) *Plan {
|
||
p := &Plan{
|
||
EvalID: e.ID,
|
||
Priority: e.Priority,
|
||
Job: j,
|
||
NodeUpdate: make(map[string][]*Allocation),
|
||
NodeAllocation: make(map[string][]*Allocation),
|
||
NodePreemptions: make(map[string][]*Allocation),
|
||
}
|
||
if j != nil {
|
||
p.AllAtOnce = j.AllAtOnce
|
||
}
|
||
return p
|
||
}
|
||
|
||
// NextRollingEval creates an evaluation to followup this eval for rolling updates
|
||
func (e *Evaluation) NextRollingEval(wait time.Duration) *Evaluation {
|
||
return &Evaluation{
|
||
ID: uuid.Generate(),
|
||
Namespace: e.Namespace,
|
||
Priority: e.Priority,
|
||
Type: e.Type,
|
||
TriggeredBy: EvalTriggerRollingUpdate,
|
||
JobID: e.JobID,
|
||
JobModifyIndex: e.JobModifyIndex,
|
||
Status: EvalStatusPending,
|
||
Wait: wait,
|
||
PreviousEval: e.ID,
|
||
}
|
||
}
|
||
|
||
// CreateBlockedEval creates a blocked evaluation to followup this eval to place any
|
||
// failed allocations. It takes the classes marked explicitly eligible or
|
||
// ineligible, whether the job has escaped computed node classes and whether the
|
||
// quota limit was reached.
|
||
func (e *Evaluation) CreateBlockedEval(classEligibility map[string]bool,
|
||
escaped bool, quotaReached string) *Evaluation {
|
||
|
||
return &Evaluation{
|
||
ID: uuid.Generate(),
|
||
Namespace: e.Namespace,
|
||
Priority: e.Priority,
|
||
Type: e.Type,
|
||
TriggeredBy: EvalTriggerQueuedAllocs,
|
||
JobID: e.JobID,
|
||
JobModifyIndex: e.JobModifyIndex,
|
||
Status: EvalStatusBlocked,
|
||
PreviousEval: e.ID,
|
||
ClassEligibility: classEligibility,
|
||
EscapedComputedClass: escaped,
|
||
QuotaLimitReached: quotaReached,
|
||
}
|
||
}
|
||
|
||
// CreateFailedFollowUpEval creates a follow up evaluation when the current one
|
||
// has been marked as failed because it has hit the delivery limit and will not
|
||
// be retried by the eval_broker. Callers should copy the created eval's ID to
|
||
// into the old eval's NextEval field.
|
||
func (e *Evaluation) CreateFailedFollowUpEval(wait time.Duration) *Evaluation {
|
||
return &Evaluation{
|
||
ID: uuid.Generate(),
|
||
Namespace: e.Namespace,
|
||
Priority: e.Priority,
|
||
Type: e.Type,
|
||
TriggeredBy: EvalTriggerFailedFollowUp,
|
||
JobID: e.JobID,
|
||
JobModifyIndex: e.JobModifyIndex,
|
||
Status: EvalStatusPending,
|
||
Wait: wait,
|
||
PreviousEval: e.ID,
|
||
}
|
||
}
|
||
|
||
// Plan is used to submit a commit plan for task allocations. These
|
||
// are submitted to the leader which verifies that resources have
|
||
// not been overcommitted before admitting the plan.
|
||
type Plan struct {
|
||
// msgpack omit empty fields during serialization
|
||
_struct bool `codec:",omitempty"` // nolint: structcheck
|
||
|
||
// EvalID is the evaluation ID this plan is associated with
|
||
EvalID string
|
||
|
||
// EvalToken is used to prevent a split-brain processing of
|
||
// an evaluation. There should only be a single scheduler running
|
||
// an Eval at a time, but this could be violated after a leadership
|
||
// transition. This unique token is used to reject plans that are
|
||
// being submitted from a different leader.
|
||
EvalToken string
|
||
|
||
// Priority is the priority of the upstream job
|
||
Priority int
|
||
|
||
// AllAtOnce is used to control if incremental scheduling of task groups
|
||
// is allowed or if we must do a gang scheduling of the entire job.
|
||
// If this is false, a plan may be partially applied. Otherwise, the
|
||
// entire plan must be able to make progress.
|
||
AllAtOnce bool
|
||
|
||
// Job is the parent job of all the allocations in the Plan.
|
||
// Since a Plan only involves a single Job, we can reduce the size
|
||
// of the plan by only including it once.
|
||
Job *Job
|
||
|
||
// NodeUpdate contains all the allocations for each node. For each node,
|
||
// this is a list of the allocations to update to either stop or evict.
|
||
NodeUpdate map[string][]*Allocation
|
||
|
||
// NodeAllocation contains all the allocations for each node.
|
||
// The evicts must be considered prior to the allocations.
|
||
NodeAllocation map[string][]*Allocation
|
||
|
||
// Annotations contains annotations by the scheduler to be used by operators
|
||
// to understand the decisions made by the scheduler.
|
||
Annotations *PlanAnnotations
|
||
|
||
// Deployment is the deployment created or updated by the scheduler that
|
||
// should be applied by the planner.
|
||
Deployment *Deployment
|
||
|
||
// DeploymentUpdates is a set of status updates to apply to the given
|
||
// deployments. This allows the scheduler to cancel any unneeded deployment
|
||
// because the job is stopped or the update block is removed.
|
||
DeploymentUpdates []*DeploymentStatusUpdate
|
||
|
||
// NodePreemptions is a map from node id to a set of allocations from other
|
||
// lower priority jobs that are preempted. Preempted allocations are marked
|
||
// as evicted.
|
||
NodePreemptions map[string][]*Allocation
|
||
}
|
||
|
||
// AppendStoppedAlloc marks an allocation to be stopped. The clientStatus of the
|
||
// allocation may be optionally set by passing in a non-empty value.
|
||
func (p *Plan) AppendStoppedAlloc(alloc *Allocation, desiredDesc, clientStatus string) {
|
||
newAlloc := new(Allocation)
|
||
*newAlloc = *alloc
|
||
|
||
// If the job is not set in the plan we are deregistering a job so we
|
||
// extract the job from the allocation.
|
||
if p.Job == nil && newAlloc.Job != nil {
|
||
p.Job = newAlloc.Job
|
||
}
|
||
|
||
// Normalize the job
|
||
newAlloc.Job = nil
|
||
|
||
// Strip the resources as it can be rebuilt.
|
||
newAlloc.Resources = nil
|
||
|
||
newAlloc.DesiredStatus = AllocDesiredStatusStop
|
||
newAlloc.DesiredDescription = desiredDesc
|
||
|
||
if clientStatus != "" {
|
||
newAlloc.ClientStatus = clientStatus
|
||
}
|
||
|
||
node := alloc.NodeID
|
||
existing := p.NodeUpdate[node]
|
||
p.NodeUpdate[node] = append(existing, newAlloc)
|
||
}
|
||
|
||
// AppendPreemptedAlloc is used to append an allocation that's being preempted to the plan.
|
||
// To minimize the size of the plan, this only sets a minimal set of fields in the allocation
|
||
func (p *Plan) AppendPreemptedAlloc(alloc *Allocation, preemptingAllocID string) {
|
||
newAlloc := &Allocation{}
|
||
newAlloc.ID = alloc.ID
|
||
newAlloc.JobID = alloc.JobID
|
||
newAlloc.Namespace = alloc.Namespace
|
||
newAlloc.DesiredStatus = AllocDesiredStatusEvict
|
||
newAlloc.PreemptedByAllocation = preemptingAllocID
|
||
|
||
desiredDesc := fmt.Sprintf("Preempted by alloc ID %v", preemptingAllocID)
|
||
newAlloc.DesiredDescription = desiredDesc
|
||
|
||
// TaskResources are needed by the plan applier to check if allocations fit
|
||
// after removing preempted allocations
|
||
if alloc.AllocatedResources != nil {
|
||
newAlloc.AllocatedResources = alloc.AllocatedResources
|
||
} else {
|
||
// COMPAT Remove in version 0.11
|
||
newAlloc.TaskResources = alloc.TaskResources
|
||
newAlloc.SharedResources = alloc.SharedResources
|
||
}
|
||
|
||
// Append this alloc to slice for this node
|
||
node := alloc.NodeID
|
||
existing := p.NodePreemptions[node]
|
||
p.NodePreemptions[node] = append(existing, newAlloc)
|
||
}
|
||
|
||
func (p *Plan) PopUpdate(alloc *Allocation) {
|
||
existing := p.NodeUpdate[alloc.NodeID]
|
||
n := len(existing)
|
||
if n > 0 && existing[n-1].ID == alloc.ID {
|
||
existing = existing[:n-1]
|
||
if len(existing) > 0 {
|
||
p.NodeUpdate[alloc.NodeID] = existing
|
||
} else {
|
||
delete(p.NodeUpdate, alloc.NodeID)
|
||
}
|
||
}
|
||
}
|
||
|
||
func (p *Plan) AppendAlloc(alloc *Allocation) {
|
||
node := alloc.NodeID
|
||
existing := p.NodeAllocation[node]
|
||
|
||
// Normalize the job
|
||
alloc.Job = nil
|
||
|
||
p.NodeAllocation[node] = append(existing, alloc)
|
||
}
|
||
|
||
// IsNoOp checks if this plan would do nothing
|
||
func (p *Plan) IsNoOp() bool {
|
||
return len(p.NodeUpdate) == 0 &&
|
||
len(p.NodeAllocation) == 0 &&
|
||
p.Deployment == nil &&
|
||
len(p.DeploymentUpdates) == 0
|
||
}
|
||
|
||
// NormalizeAllocations normalizes allocations to remove fields that can
|
||
// be fetched from the MemDB instead of sending over the wire
|
||
func (p *Plan) NormalizeAllocations() {
|
||
for _, allocs := range p.NodeUpdate {
|
||
for i, alloc := range allocs {
|
||
allocs[i] = &Allocation{
|
||
ID: alloc.ID,
|
||
DesiredDescription: alloc.DesiredDescription,
|
||
ClientStatus: alloc.ClientStatus,
|
||
}
|
||
}
|
||
}
|
||
|
||
for _, allocs := range p.NodePreemptions {
|
||
for i, alloc := range allocs {
|
||
allocs[i] = &Allocation{
|
||
ID: alloc.ID,
|
||
PreemptedByAllocation: alloc.PreemptedByAllocation,
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// PlanResult is the result of a plan submitted to the leader.
|
||
type PlanResult struct {
|
||
// NodeUpdate contains all the updates that were committed.
|
||
NodeUpdate map[string][]*Allocation
|
||
|
||
// NodeAllocation contains all the allocations that were committed.
|
||
NodeAllocation map[string][]*Allocation
|
||
|
||
// Deployment is the deployment that was committed.
|
||
Deployment *Deployment
|
||
|
||
// DeploymentUpdates is the set of deployment updates that were committed.
|
||
DeploymentUpdates []*DeploymentStatusUpdate
|
||
|
||
// NodePreemptions is a map from node id to a set of allocations from other
|
||
// lower priority jobs that are preempted. Preempted allocations are marked
|
||
// as stopped.
|
||
NodePreemptions map[string][]*Allocation
|
||
|
||
// RefreshIndex is the index the worker should refresh state up to.
|
||
// This allows all evictions and allocations to be materialized.
|
||
// If any allocations were rejected due to stale data (node state,
|
||
// over committed) this can be used to force a worker refresh.
|
||
RefreshIndex uint64
|
||
|
||
// AllocIndex is the Raft index in which the evictions and
|
||
// allocations took place. This is used for the write index.
|
||
AllocIndex uint64
|
||
}
|
||
|
||
// IsNoOp checks if this plan result would do nothing
|
||
func (p *PlanResult) IsNoOp() bool {
|
||
return len(p.NodeUpdate) == 0 && len(p.NodeAllocation) == 0 &&
|
||
len(p.DeploymentUpdates) == 0 && p.Deployment == nil
|
||
}
|
||
|
||
// FullCommit is used to check if all the allocations in a plan
|
||
// were committed as part of the result. Returns if there was
|
||
// a match, and the number of expected and actual allocations.
|
||
func (p *PlanResult) FullCommit(plan *Plan) (bool, int, int) {
|
||
expected := 0
|
||
actual := 0
|
||
for name, allocList := range plan.NodeAllocation {
|
||
didAlloc, _ := p.NodeAllocation[name]
|
||
expected += len(allocList)
|
||
actual += len(didAlloc)
|
||
}
|
||
return actual == expected, expected, actual
|
||
}
|
||
|
||
// PlanAnnotations holds annotations made by the scheduler to give further debug
|
||
// information to operators.
|
||
type PlanAnnotations struct {
|
||
// DesiredTGUpdates is the set of desired updates per task group.
|
||
DesiredTGUpdates map[string]*DesiredUpdates
|
||
|
||
// PreemptedAllocs is the set of allocations to be preempted to make the placement successful.
|
||
PreemptedAllocs []*AllocListStub
|
||
}
|
||
|
||
// DesiredUpdates is the set of changes the scheduler would like to make given
|
||
// sufficient resources and cluster capacity.
|
||
type DesiredUpdates struct {
|
||
Ignore uint64
|
||
Place uint64
|
||
Migrate uint64
|
||
Stop uint64
|
||
InPlaceUpdate uint64
|
||
DestructiveUpdate uint64
|
||
Canary uint64
|
||
Preemptions uint64
|
||
}
|
||
|
||
func (d *DesiredUpdates) GoString() string {
|
||
return fmt.Sprintf("(place %d) (inplace %d) (destructive %d) (stop %d) (migrate %d) (ignore %d) (canary %d)",
|
||
d.Place, d.InPlaceUpdate, d.DestructiveUpdate, d.Stop, d.Migrate, d.Ignore, d.Canary)
|
||
}
|
||
|
||
// msgpackHandle is a shared handle for encoding/decoding of structs
|
||
var MsgpackHandle = func() *codec.MsgpackHandle {
|
||
h := &codec.MsgpackHandle{RawToString: true}
|
||
|
||
// Sets the default type for decoding a map into a nil interface{}.
|
||
// This is necessary in particular because we store the driver configs as a
|
||
// nil interface{}.
|
||
h.MapType = reflect.TypeOf(map[string]interface{}(nil))
|
||
return h
|
||
}()
|
||
|
||
var (
|
||
// JsonHandle and JsonHandlePretty are the codec handles to JSON encode
|
||
// structs. The pretty handle will add indents for easier human consumption.
|
||
JsonHandle = &codec.JsonHandle{
|
||
HTMLCharsAsIs: true,
|
||
}
|
||
JsonHandlePretty = &codec.JsonHandle{
|
||
HTMLCharsAsIs: true,
|
||
Indent: 4,
|
||
}
|
||
)
|
||
|
||
// TODO Figure out if we can remove this. This is our fork that is just way
|
||
// behind. I feel like its original purpose was to pin at a stable version but
|
||
// now we can accomplish this with vendoring.
|
||
var HashiMsgpackHandle = func() *hcodec.MsgpackHandle {
|
||
h := &hcodec.MsgpackHandle{RawToString: true}
|
||
|
||
// Sets the default type for decoding a map into a nil interface{}.
|
||
// This is necessary in particular because we store the driver configs as a
|
||
// nil interface{}.
|
||
h.MapType = reflect.TypeOf(map[string]interface{}(nil))
|
||
return h
|
||
}()
|
||
|
||
// Decode is used to decode a MsgPack encoded object
|
||
func Decode(buf []byte, out interface{}) error {
|
||
return codec.NewDecoder(bytes.NewReader(buf), MsgpackHandle).Decode(out)
|
||
}
|
||
|
||
// Encode is used to encode a MsgPack object with type prefix
|
||
func Encode(t MessageType, msg interface{}) ([]byte, error) {
|
||
var buf bytes.Buffer
|
||
buf.WriteByte(uint8(t))
|
||
err := codec.NewEncoder(&buf, MsgpackHandle).Encode(msg)
|
||
return buf.Bytes(), err
|
||
}
|
||
|
||
// KeyringResponse is a unified key response and can be used for install,
|
||
// remove, use, as well as listing key queries.
|
||
type KeyringResponse struct {
|
||
Messages map[string]string
|
||
Keys map[string]int
|
||
NumNodes int
|
||
}
|
||
|
||
// KeyringRequest is request objects for serf key operations.
|
||
type KeyringRequest struct {
|
||
Key string
|
||
}
|
||
|
||
// RecoverableError wraps an error and marks whether it is recoverable and could
|
||
// be retried or it is fatal.
|
||
type RecoverableError struct {
|
||
Err string
|
||
Recoverable bool
|
||
}
|
||
|
||
// NewRecoverableError is used to wrap an error and mark it as recoverable or
|
||
// not.
|
||
func NewRecoverableError(e error, recoverable bool) error {
|
||
if e == nil {
|
||
return nil
|
||
}
|
||
|
||
return &RecoverableError{
|
||
Err: e.Error(),
|
||
Recoverable: recoverable,
|
||
}
|
||
}
|
||
|
||
// WrapRecoverable wraps an existing error in a new RecoverableError with a new
|
||
// message. If the error was recoverable before the returned error is as well;
|
||
// otherwise it is unrecoverable.
|
||
func WrapRecoverable(msg string, err error) error {
|
||
return &RecoverableError{Err: msg, Recoverable: IsRecoverable(err)}
|
||
}
|
||
|
||
func (r *RecoverableError) Error() string {
|
||
return r.Err
|
||
}
|
||
|
||
func (r *RecoverableError) IsRecoverable() bool {
|
||
return r.Recoverable
|
||
}
|
||
|
||
func (r *RecoverableError) IsUnrecoverable() bool {
|
||
return !r.Recoverable
|
||
}
|
||
|
||
// Recoverable is an interface for errors to implement to indicate whether or
|
||
// not they are fatal or recoverable.
|
||
type Recoverable interface {
|
||
error
|
||
IsRecoverable() bool
|
||
}
|
||
|
||
// IsRecoverable returns true if error is a RecoverableError with
|
||
// Recoverable=true. Otherwise false is returned.
|
||
func IsRecoverable(e error) bool {
|
||
if re, ok := e.(Recoverable); ok {
|
||
return re.IsRecoverable()
|
||
}
|
||
return false
|
||
}
|
||
|
||
// WrappedServerError wraps an error and satisfies
|
||
// both the Recoverable and the ServerSideError interfaces
|
||
type WrappedServerError struct {
|
||
Err error
|
||
}
|
||
|
||
// NewWrappedServerError is used to create a wrapped server side error
|
||
func NewWrappedServerError(e error) error {
|
||
return &WrappedServerError{
|
||
Err: e,
|
||
}
|
||
}
|
||
|
||
func (r *WrappedServerError) IsRecoverable() bool {
|
||
return IsRecoverable(r.Err)
|
||
}
|
||
|
||
func (r *WrappedServerError) Error() string {
|
||
return r.Err.Error()
|
||
}
|
||
|
||
func (r *WrappedServerError) IsServerSide() bool {
|
||
return true
|
||
}
|
||
|
||
// ServerSideError is an interface for errors to implement to indicate
|
||
// errors occurring after the request makes it to a server
|
||
type ServerSideError interface {
|
||
error
|
||
IsServerSide() bool
|
||
}
|
||
|
||
// IsServerSide returns true if error is a wrapped
|
||
// server side error
|
||
func IsServerSide(e error) bool {
|
||
if se, ok := e.(ServerSideError); ok {
|
||
return se.IsServerSide()
|
||
}
|
||
return false
|
||
}
|
||
|
||
// ACLPolicy is used to represent an ACL policy
|
||
type ACLPolicy struct {
|
||
Name string // Unique name
|
||
Description string // Human readable
|
||
Rules string // HCL or JSON format
|
||
Hash []byte
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// SetHash is used to compute and set the hash of the ACL policy
|
||
func (c *ACLPolicy) SetHash() []byte {
|
||
// Initialize a 256bit Blake2 hash (32 bytes)
|
||
hash, err := blake2b.New256(nil)
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
|
||
// Write all the user set fields
|
||
hash.Write([]byte(c.Name))
|
||
hash.Write([]byte(c.Description))
|
||
hash.Write([]byte(c.Rules))
|
||
|
||
// Finalize the hash
|
||
hashVal := hash.Sum(nil)
|
||
|
||
// Set and return the hash
|
||
c.Hash = hashVal
|
||
return hashVal
|
||
}
|
||
|
||
func (a *ACLPolicy) Stub() *ACLPolicyListStub {
|
||
return &ACLPolicyListStub{
|
||
Name: a.Name,
|
||
Description: a.Description,
|
||
Hash: a.Hash,
|
||
CreateIndex: a.CreateIndex,
|
||
ModifyIndex: a.ModifyIndex,
|
||
}
|
||
}
|
||
|
||
func (a *ACLPolicy) Validate() error {
|
||
var mErr multierror.Error
|
||
if !validPolicyName.MatchString(a.Name) {
|
||
err := fmt.Errorf("invalid name '%s'", a.Name)
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
if _, err := acl.Parse(a.Rules); err != nil {
|
||
err = fmt.Errorf("failed to parse rules: %v", err)
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
if len(a.Description) > maxPolicyDescriptionLength {
|
||
err := fmt.Errorf("description longer than %d", maxPolicyDescriptionLength)
|
||
mErr.Errors = append(mErr.Errors, err)
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// ACLPolicyListStub is used to for listing ACL policies
|
||
type ACLPolicyListStub struct {
|
||
Name string
|
||
Description string
|
||
Hash []byte
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// ACLPolicyListRequest is used to request a list of policies
|
||
type ACLPolicyListRequest struct {
|
||
QueryOptions
|
||
}
|
||
|
||
// ACLPolicySpecificRequest is used to query a specific policy
|
||
type ACLPolicySpecificRequest struct {
|
||
Name string
|
||
QueryOptions
|
||
}
|
||
|
||
// ACLPolicySetRequest is used to query a set of policies
|
||
type ACLPolicySetRequest struct {
|
||
Names []string
|
||
QueryOptions
|
||
}
|
||
|
||
// ACLPolicyListResponse is used for a list request
|
||
type ACLPolicyListResponse struct {
|
||
Policies []*ACLPolicyListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// SingleACLPolicyResponse is used to return a single policy
|
||
type SingleACLPolicyResponse struct {
|
||
Policy *ACLPolicy
|
||
QueryMeta
|
||
}
|
||
|
||
// ACLPolicySetResponse is used to return a set of policies
|
||
type ACLPolicySetResponse struct {
|
||
Policies map[string]*ACLPolicy
|
||
QueryMeta
|
||
}
|
||
|
||
// ACLPolicyDeleteRequest is used to delete a set of policies
|
||
type ACLPolicyDeleteRequest struct {
|
||
Names []string
|
||
WriteRequest
|
||
}
|
||
|
||
// ACLPolicyUpsertRequest is used to upsert a set of policies
|
||
type ACLPolicyUpsertRequest struct {
|
||
Policies []*ACLPolicy
|
||
WriteRequest
|
||
}
|
||
|
||
// ACLToken represents a client token which is used to Authenticate
|
||
type ACLToken struct {
|
||
AccessorID string // Public Accessor ID (UUID)
|
||
SecretID string // Secret ID, private (UUID)
|
||
Name string // Human friendly name
|
||
Type string // Client or Management
|
||
Policies []string // Policies this token ties to
|
||
Global bool // Global or Region local
|
||
Hash []byte
|
||
CreateTime time.Time // Time of creation
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
var (
|
||
// AnonymousACLToken is used no SecretID is provided, and the
|
||
// request is made anonymously.
|
||
AnonymousACLToken = &ACLToken{
|
||
AccessorID: "anonymous",
|
||
Name: "Anonymous Token",
|
||
Type: ACLClientToken,
|
||
Policies: []string{"anonymous"},
|
||
Global: false,
|
||
}
|
||
)
|
||
|
||
type ACLTokenListStub struct {
|
||
AccessorID string
|
||
Name string
|
||
Type string
|
||
Policies []string
|
||
Global bool
|
||
Hash []byte
|
||
CreateTime time.Time
|
||
CreateIndex uint64
|
||
ModifyIndex uint64
|
||
}
|
||
|
||
// SetHash is used to compute and set the hash of the ACL token
|
||
func (a *ACLToken) SetHash() []byte {
|
||
// Initialize a 256bit Blake2 hash (32 bytes)
|
||
hash, err := blake2b.New256(nil)
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
|
||
// Write all the user set fields
|
||
hash.Write([]byte(a.Name))
|
||
hash.Write([]byte(a.Type))
|
||
for _, policyName := range a.Policies {
|
||
hash.Write([]byte(policyName))
|
||
}
|
||
if a.Global {
|
||
hash.Write([]byte("global"))
|
||
} else {
|
||
hash.Write([]byte("local"))
|
||
}
|
||
|
||
// Finalize the hash
|
||
hashVal := hash.Sum(nil)
|
||
|
||
// Set and return the hash
|
||
a.Hash = hashVal
|
||
return hashVal
|
||
}
|
||
|
||
func (a *ACLToken) Stub() *ACLTokenListStub {
|
||
return &ACLTokenListStub{
|
||
AccessorID: a.AccessorID,
|
||
Name: a.Name,
|
||
Type: a.Type,
|
||
Policies: a.Policies,
|
||
Global: a.Global,
|
||
Hash: a.Hash,
|
||
CreateTime: a.CreateTime,
|
||
CreateIndex: a.CreateIndex,
|
||
ModifyIndex: a.ModifyIndex,
|
||
}
|
||
}
|
||
|
||
// Validate is used to sanity check a token
|
||
func (a *ACLToken) Validate() error {
|
||
var mErr multierror.Error
|
||
if len(a.Name) > maxTokenNameLength {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("token name too long"))
|
||
}
|
||
switch a.Type {
|
||
case ACLClientToken:
|
||
if len(a.Policies) == 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("client token missing policies"))
|
||
}
|
||
case ACLManagementToken:
|
||
if len(a.Policies) != 0 {
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("management token cannot be associated with policies"))
|
||
}
|
||
default:
|
||
mErr.Errors = append(mErr.Errors, fmt.Errorf("token type must be client or management"))
|
||
}
|
||
return mErr.ErrorOrNil()
|
||
}
|
||
|
||
// PolicySubset checks if a given set of policies is a subset of the token
|
||
func (a *ACLToken) PolicySubset(policies []string) bool {
|
||
// Hot-path the management tokens, superset of all policies.
|
||
if a.Type == ACLManagementToken {
|
||
return true
|
||
}
|
||
associatedPolicies := make(map[string]struct{}, len(a.Policies))
|
||
for _, policy := range a.Policies {
|
||
associatedPolicies[policy] = struct{}{}
|
||
}
|
||
for _, policy := range policies {
|
||
if _, ok := associatedPolicies[policy]; !ok {
|
||
return false
|
||
}
|
||
}
|
||
return true
|
||
}
|
||
|
||
// ACLTokenListRequest is used to request a list of tokens
|
||
type ACLTokenListRequest struct {
|
||
GlobalOnly bool
|
||
QueryOptions
|
||
}
|
||
|
||
// ACLTokenSpecificRequest is used to query a specific token
|
||
type ACLTokenSpecificRequest struct {
|
||
AccessorID string
|
||
QueryOptions
|
||
}
|
||
|
||
// ACLTokenSetRequest is used to query a set of tokens
|
||
type ACLTokenSetRequest struct {
|
||
AccessorIDS []string
|
||
QueryOptions
|
||
}
|
||
|
||
// ACLTokenListResponse is used for a list request
|
||
type ACLTokenListResponse struct {
|
||
Tokens []*ACLTokenListStub
|
||
QueryMeta
|
||
}
|
||
|
||
// SingleACLTokenResponse is used to return a single token
|
||
type SingleACLTokenResponse struct {
|
||
Token *ACLToken
|
||
QueryMeta
|
||
}
|
||
|
||
// ACLTokenSetResponse is used to return a set of token
|
||
type ACLTokenSetResponse struct {
|
||
Tokens map[string]*ACLToken // Keyed by Accessor ID
|
||
QueryMeta
|
||
}
|
||
|
||
// ResolveACLTokenRequest is used to resolve a specific token
|
||
type ResolveACLTokenRequest struct {
|
||
SecretID string
|
||
QueryOptions
|
||
}
|
||
|
||
// ResolveACLTokenResponse is used to resolve a single token
|
||
type ResolveACLTokenResponse struct {
|
||
Token *ACLToken
|
||
QueryMeta
|
||
}
|
||
|
||
// ACLTokenDeleteRequest is used to delete a set of tokens
|
||
type ACLTokenDeleteRequest struct {
|
||
AccessorIDs []string
|
||
WriteRequest
|
||
}
|
||
|
||
// ACLTokenBootstrapRequest is used to bootstrap ACLs
|
||
type ACLTokenBootstrapRequest struct {
|
||
Token *ACLToken // Not client specifiable
|
||
ResetIndex uint64 // Reset index is used to clear the bootstrap token
|
||
WriteRequest
|
||
}
|
||
|
||
// ACLTokenUpsertRequest is used to upsert a set of tokens
|
||
type ACLTokenUpsertRequest struct {
|
||
Tokens []*ACLToken
|
||
WriteRequest
|
||
}
|
||
|
||
// ACLTokenUpsertResponse is used to return from an ACLTokenUpsertRequest
|
||
type ACLTokenUpsertResponse struct {
|
||
Tokens []*ACLToken
|
||
WriteMeta
|
||
}
|