open-consul/agent/grpc-external/services/peerstream/server.go

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package peerstream
import (
"time"
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-memdb"
"google.golang.org/grpc"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/acl/resolver"
"github.com/hashicorp/consul/agent/consul/state"
"github.com/hashicorp/consul/agent/consul/stream"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/proto/pbpeering"
"github.com/hashicorp/consul/proto/pbpeerstream"
)
// TODO(peering): fix up these interfaces to be more testable now that they are
// extracted from private peering
const (
defaultOutgoingHeartbeatInterval = 15 * time.Second
defaultIncomingHeartbeatTimeout = 2 * time.Minute
)
type Server struct {
Config
}
type Config struct {
Backend Backend
Tracker *Tracker
GetStore func() StateStore
Logger hclog.Logger
ACLResolver ACLResolver
// Datacenter of the Consul server this gRPC server is hosted on
Datacenter string
ConnectEnabled bool
// outgoingHeartbeatInterval is how often we send a heartbeat.
outgoingHeartbeatInterval time.Duration
// incomingHeartbeatTimeout is how long we'll wait between receiving heartbeats before we close the connection.
incomingHeartbeatTimeout time.Duration
}
//go:generate mockery --name ACLResolver --inpackage
type ACLResolver interface {
ResolveTokenAndDefaultMeta(string, *acl.EnterpriseMeta, *acl.AuthorizerContext) (resolver.Result, error)
}
func NewServer(cfg Config) *Server {
requireNotNil(cfg.Backend, "Backend")
requireNotNil(cfg.Tracker, "Tracker")
requireNotNil(cfg.GetStore, "GetStore")
requireNotNil(cfg.Logger, "Logger")
// requireNotNil(cfg.ACLResolver, "ACLResolver") // TODO(peering): reenable check when ACLs are required
if cfg.Datacenter == "" {
panic("Datacenter is required")
}
if cfg.outgoingHeartbeatInterval == 0 {
cfg.outgoingHeartbeatInterval = defaultOutgoingHeartbeatInterval
}
if cfg.incomingHeartbeatTimeout == 0 {
cfg.incomingHeartbeatTimeout = defaultIncomingHeartbeatTimeout
}
return &Server{
Config: cfg,
}
}
func requireNotNil(v interface{}, name string) {
if v == nil {
panic(name + " is required")
}
}
var _ pbpeerstream.PeerStreamServiceServer = (*Server)(nil)
func (s *Server) Register(grpcServer *grpc.Server) {
pbpeerstream.RegisterPeerStreamServiceServer(grpcServer, s)
}
type Backend interface {
Subscribe(req *stream.SubscribeRequest) (*stream.Subscription, error)
// IsLeader indicates whether the consul server is in a leader state or not.
IsLeader() bool
// SetLeaderAddress is called on a raft.LeaderObservation in a go routine
// in the consul server; see trackLeaderChanges()
SetLeaderAddress(string)
// GetLeaderAddress provides the best hint for the current address of the
// leader. There is no guarantee that this is the actual address of the
// leader.
GetLeaderAddress() string
PeeringTerminateByID(req *pbpeering.PeeringTerminateByIDRequest) error
PeeringTrustBundleWrite(req *pbpeering.PeeringTrustBundleWriteRequest) error
CatalogRegister(req *structs.RegisterRequest) error
CatalogDeregister(req *structs.DeregisterRequest) error
}
// StateStore provides a read-only interface for querying Peering data.
type StateStore interface {
PeeringRead(ws memdb.WatchSet, q state.Query) (uint64, *pbpeering.Peering, error)
PeeringReadByID(ws memdb.WatchSet, id string) (uint64, *pbpeering.Peering, error)
PeeringList(ws memdb.WatchSet, entMeta acl.EnterpriseMeta) (uint64, []*pbpeering.Peering, error)
PeeringTrustBundleRead(ws memdb.WatchSet, q state.Query) (uint64, *pbpeering.PeeringTrustBundle, error)
PeeringTrustBundleList(ws memdb.WatchSet, entMeta acl.EnterpriseMeta) (uint64, []*pbpeering.PeeringTrustBundle, error)
ExportedServicesForPeer(ws memdb.WatchSet, peerID, dc string) (uint64, *structs.ExportedServiceList, error)
ServiceDump(ws memdb.WatchSet, kind structs.ServiceKind, useKind bool, entMeta *acl.EnterpriseMeta, peerName string) (uint64, structs.CheckServiceNodes, error)
CheckServiceNodes(ws memdb.WatchSet, serviceName string, entMeta *acl.EnterpriseMeta, peerName string) (uint64, structs.CheckServiceNodes, error)
NodeServices(ws memdb.WatchSet, nodeNameOrID string, entMeta *acl.EnterpriseMeta, peerName string) (uint64, *structs.NodeServices, error)
CAConfig(ws memdb.WatchSet) (uint64, *structs.CAConfiguration, error)
TrustBundleListByService(ws memdb.WatchSet, service, dc string, entMeta acl.EnterpriseMeta) (uint64, []*pbpeering.PeeringTrustBundle, error)
AbandonCh() <-chan struct{}
}