528 lines
13 KiB
Go
528 lines
13 KiB
Go
package client
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"os"
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"path/filepath"
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"sync/atomic"
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"testing"
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"time"
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"github.com/hashicorp/nomad/client/config"
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"github.com/hashicorp/nomad/command/agent/consul"
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"github.com/hashicorp/nomad/nomad"
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"github.com/hashicorp/nomad/nomad/mock"
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"github.com/hashicorp/nomad/nomad/structs"
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"github.com/hashicorp/nomad/testutil"
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"github.com/mitchellh/hashstructure"
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ctestutil "github.com/hashicorp/nomad/client/testutil"
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)
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var nextPort uint32 = 16000
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func getPort() int {
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return int(atomic.AddUint32(&nextPort, 1))
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}
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func testServer(t *testing.T, cb func(*nomad.Config)) (*nomad.Server, string) {
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// Setup the default settings
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config := nomad.DefaultConfig()
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config.Build = "unittest"
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config.DevMode = true
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config.RPCAddr = &net.TCPAddr{
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IP: []byte{127, 0, 0, 1},
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Port: getPort(),
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}
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config.NodeName = fmt.Sprintf("Node %d", config.RPCAddr.Port)
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// Tighten the Serf timing
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config.SerfConfig.MemberlistConfig.BindAddr = "127.0.0.1"
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config.SerfConfig.MemberlistConfig.BindPort = getPort()
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config.SerfConfig.MemberlistConfig.SuspicionMult = 2
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config.SerfConfig.MemberlistConfig.RetransmitMult = 2
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config.SerfConfig.MemberlistConfig.ProbeTimeout = 50 * time.Millisecond
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config.SerfConfig.MemberlistConfig.ProbeInterval = 100 * time.Millisecond
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config.SerfConfig.MemberlistConfig.GossipInterval = 100 * time.Millisecond
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// Tighten the Raft timing
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config.RaftConfig.LeaderLeaseTimeout = 20 * time.Millisecond
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config.RaftConfig.HeartbeatTimeout = 40 * time.Millisecond
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config.RaftConfig.ElectionTimeout = 40 * time.Millisecond
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config.RaftConfig.StartAsLeader = true
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config.RaftTimeout = 500 * time.Millisecond
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// Invoke the callback if any
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if cb != nil {
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cb(config)
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}
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shutdownCh := make(chan struct{})
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consulSyncer, err := consul.NewSyncer(conf.ConsulConfig, shutdownCh, log.New(os.Stderr, "", log.LstdFlags))
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Create server
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server, err := nomad.NewServer(config, consulSyncer)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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return server, config.RPCAddr.String()
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}
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func testClient(t *testing.T, cb func(c *config.Config)) *Client {
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conf := config.DefaultConfig()
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conf.DevMode = true
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if cb != nil {
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cb(conf)
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}
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shutdownCh := make(chan struct{})
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consulSyncer, err := consul.NewSyncer(conf.ConsulConfig, shutdownCh, log.New(os.Stderr, "", log.LstdFlags))
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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client, err := NewClient(conf, consulSyncer)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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return client
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}
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func TestClient_StartStop(t *testing.T) {
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client := testClient(t, nil)
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if err := client.Shutdown(); err != nil {
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t.Fatalf("err: %v", err)
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}
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}
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func TestClient_RPC(t *testing.T) {
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s1, addr := testServer(t, nil)
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defer s1.Shutdown()
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c1 := testClient(t, func(c *config.Config) {
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c.Servers = []string{addr}
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})
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defer c1.Shutdown()
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// RPC should succeed
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testutil.WaitForResult(func() (bool, error) {
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var out struct{}
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err := c1.RPC("Status.Ping", struct{}{}, &out)
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return err == nil, err
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_RPC_Passthrough(t *testing.T) {
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s1, _ := testServer(t, nil)
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defer s1.Shutdown()
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c1 := testClient(t, func(c *config.Config) {
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c.RPCHandler = s1
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})
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defer c1.Shutdown()
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// RPC should succeed
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testutil.WaitForResult(func() (bool, error) {
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var out struct{}
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err := c1.RPC("Status.Ping", struct{}{}, &out)
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return err == nil, err
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_Fingerprint(t *testing.T) {
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c := testClient(t, nil)
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defer c.Shutdown()
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// Ensure kernel and arch are always present
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node := c.Node()
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if node.Attributes["kernel.name"] == "" {
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t.Fatalf("missing kernel.name")
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}
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if node.Attributes["arch"] == "" {
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t.Fatalf("missing arch")
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}
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}
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func TestClient_HasNodeChanged(t *testing.T) {
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c := testClient(t, nil)
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defer c.Shutdown()
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node := c.Node()
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attrHash, err := hashstructure.Hash(node.Attributes, nil)
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if err != nil {
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c.logger.Printf("[DEBUG] client: unable to calculate node attributes hash: %v", err)
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}
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// Calculate node meta map hash
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metaHash, err := hashstructure.Hash(node.Meta, nil)
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if err != nil {
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c.logger.Printf("[DEBUG] client: unable to calculate node meta hash: %v", err)
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}
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if changed, _, _ := c.hasNodeChanged(attrHash, metaHash); changed {
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t.Fatalf("Unexpected hash change.")
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}
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// Change node attribute
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node.Attributes["arch"] = "xyz_86"
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if changed, newAttrHash, _ := c.hasNodeChanged(attrHash, metaHash); !changed {
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t.Fatalf("Expected hash change in attributes: %d vs %d", attrHash, newAttrHash)
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}
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// Change node meta map
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node.Meta["foo"] = "bar"
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if changed, _, newMetaHash := c.hasNodeChanged(attrHash, metaHash); !changed {
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t.Fatalf("Expected hash change in meta map: %d vs %d", metaHash, newMetaHash)
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}
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}
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func TestClient_Fingerprint_InWhitelist(t *testing.T) {
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c := testClient(t, func(c *config.Config) {
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if c.Options == nil {
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c.Options = make(map[string]string)
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}
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// Weird spacing to test trimming. Whitelist all modules expect cpu.
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c.Options["fingerprint.whitelist"] = " arch, consul,cpu,env_aws,env_gce,host,memory,network,storage,foo,bar "
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})
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defer c.Shutdown()
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node := c.Node()
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if node.Attributes["cpu.frequency"] == "" {
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t.Fatalf("missing cpu fingerprint module")
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}
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}
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func TestClient_Fingerprint_OutOfWhitelist(t *testing.T) {
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c := testClient(t, func(c *config.Config) {
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if c.Options == nil {
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c.Options = make(map[string]string)
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}
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c.Options["fingerprint.whitelist"] = "arch,consul,env_aws,env_gce,host,memory,network,storage,foo,bar"
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})
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defer c.Shutdown()
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node := c.Node()
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if node.Attributes["cpu.frequency"] != "" {
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t.Fatalf("found cpu fingerprint module")
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}
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}
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func TestClient_Drivers(t *testing.T) {
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c := testClient(t, nil)
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defer c.Shutdown()
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node := c.Node()
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if node.Attributes["driver.exec"] == "" {
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t.Fatalf("missing exec driver")
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}
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}
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func TestClient_Drivers_InWhitelist(t *testing.T) {
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c := testClient(t, func(c *config.Config) {
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if c.Options == nil {
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c.Options = make(map[string]string)
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}
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// Weird spacing to test trimming
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c.Options["driver.whitelist"] = " exec , foo "
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})
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defer c.Shutdown()
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node := c.Node()
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if node.Attributes["driver.exec"] == "" {
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t.Fatalf("missing exec driver")
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}
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}
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func TestClient_Drivers_OutOfWhitelist(t *testing.T) {
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c := testClient(t, func(c *config.Config) {
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if c.Options == nil {
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c.Options = make(map[string]string)
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}
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c.Options["driver.whitelist"] = "foo,bar,baz"
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})
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defer c.Shutdown()
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node := c.Node()
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if node.Attributes["driver.exec"] != "" {
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t.Fatalf("found exec driver")
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}
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}
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func TestClient_Register(t *testing.T) {
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s1, _ := testServer(t, nil)
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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c1 := testClient(t, func(c *config.Config) {
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c.RPCHandler = s1
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})
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defer c1.Shutdown()
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req := structs.NodeSpecificRequest{
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NodeID: c1.Node().ID,
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QueryOptions: structs.QueryOptions{Region: "global"},
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}
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var out structs.SingleNodeResponse
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// Register should succeed
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testutil.WaitForResult(func() (bool, error) {
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err := s1.RPC("Node.GetNode", &req, &out)
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if err != nil {
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return false, err
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}
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if out.Node == nil {
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return false, fmt.Errorf("missing reg")
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}
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return out.Node.ID == req.NodeID, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_Heartbeat(t *testing.T) {
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s1, _ := testServer(t, func(c *nomad.Config) {
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c.MinHeartbeatTTL = 50 * time.Millisecond
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})
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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c1 := testClient(t, func(c *config.Config) {
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c.RPCHandler = s1
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})
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defer c1.Shutdown()
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req := structs.NodeSpecificRequest{
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NodeID: c1.Node().ID,
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QueryOptions: structs.QueryOptions{Region: "global"},
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}
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var out structs.SingleNodeResponse
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// Register should succeed
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testutil.WaitForResult(func() (bool, error) {
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err := s1.RPC("Node.GetNode", &req, &out)
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if err != nil {
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return false, err
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}
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if out.Node == nil {
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return false, fmt.Errorf("missing reg")
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}
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return out.Node.Status == structs.NodeStatusReady, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_UpdateAllocStatus(t *testing.T) {
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s1, _ := testServer(t, nil)
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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c1 := testClient(t, func(c *config.Config) {
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c.RPCHandler = s1
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})
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defer c1.Shutdown()
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alloc := mock.Alloc()
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alloc.NodeID = c1.Node().ID
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originalStatus := "foo"
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alloc.ClientStatus = originalStatus
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state := s1.State()
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state.UpsertAllocs(100, []*structs.Allocation{alloc})
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testutil.WaitForResult(func() (bool, error) {
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out, err := state.AllocByID(alloc.ID)
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if err != nil {
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return false, err
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}
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if out == nil {
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return false, fmt.Errorf("no such alloc")
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}
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if out.ClientStatus == originalStatus {
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return false, fmt.Errorf("Alloc client status not updated; got %v", out.ClientStatus)
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}
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return true, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_WatchAllocs(t *testing.T) {
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ctestutil.ExecCompatible(t)
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s1, _ := testServer(t, nil)
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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c1 := testClient(t, func(c *config.Config) {
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c.RPCHandler = s1
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})
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defer c1.Shutdown()
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// Create mock allocations
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alloc1 := mock.Alloc()
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alloc1.NodeID = c1.Node().ID
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alloc2 := mock.Alloc()
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alloc2.NodeID = c1.Node().ID
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state := s1.State()
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err := state.UpsertAllocs(100,
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[]*structs.Allocation{alloc1, alloc2})
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Both allocations should get registered
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testutil.WaitForResult(func() (bool, error) {
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c1.allocLock.RLock()
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num := len(c1.allocs)
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c1.allocLock.RUnlock()
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return num == 2, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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// Delete one allocation
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err = state.DeleteEval(101, nil, []string{alloc1.ID})
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Update the other allocation. Have to make a copy because the allocs are
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// shared in memory in the test and the modify index would be updated in the
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// alloc runner.
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alloc2_2 := new(structs.Allocation)
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*alloc2_2 = *alloc2
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alloc2_2.DesiredStatus = structs.AllocDesiredStatusStop
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err = state.UpsertAllocs(102,
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[]*structs.Allocation{alloc2_2})
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// One allocations should get de-registered
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testutil.WaitForResult(func() (bool, error) {
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c1.allocLock.RLock()
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num := len(c1.allocs)
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c1.allocLock.RUnlock()
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return num == 1, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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// One allocations should get updated
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testutil.WaitForResult(func() (bool, error) {
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c1.allocLock.RLock()
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ar := c1.allocs[alloc2.ID]
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c1.allocLock.RUnlock()
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return ar.Alloc().DesiredStatus == structs.AllocDesiredStatusStop, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_SaveRestoreState(t *testing.T) {
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ctestutil.ExecCompatible(t)
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s1, _ := testServer(t, nil)
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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c1 := testClient(t, func(c *config.Config) {
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c.DevMode = false
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c.RPCHandler = s1
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})
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defer c1.Shutdown()
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// Create mock allocations
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alloc1 := mock.Alloc()
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alloc1.NodeID = c1.Node().ID
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task := alloc1.Job.TaskGroups[0].Tasks[0]
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task.Config["command"] = "/bin/sleep"
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task.Config["args"] = []string{"10"}
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state := s1.State()
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err := state.UpsertAllocs(100, []*structs.Allocation{alloc1})
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Allocations should get registered
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testutil.WaitForResult(func() (bool, error) {
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c1.allocLock.RLock()
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ar := c1.allocs[alloc1.ID]
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c1.allocLock.RUnlock()
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return ar != nil && ar.Alloc().ClientStatus == structs.AllocClientStatusRunning, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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// Shutdown the client, saves state
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err = c1.Shutdown()
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Create a new client
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shutdownCh := make(chan struct{})
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consulSyncer, err := consul.NewSyncer(c1.config.ConsulConfig, shutdownCh, log.New(os.Stderr, "", log.LstdFlags))
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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c2, err := NewClient(c1.config, consulSyncer)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer c2.Shutdown()
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// Ensure the allocation is running
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testutil.WaitForResult(func() (bool, error) {
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c2.allocLock.RLock()
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ar := c2.allocs[alloc1.ID]
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c2.allocLock.RUnlock()
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status := ar.Alloc().ClientStatus
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alive := status != structs.AllocClientStatusRunning ||
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status != structs.AllocClientStatusPending
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if !alive {
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return false, fmt.Errorf("incorrect client status: %#v", ar.Alloc())
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}
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return true, nil
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}, func(err error) {
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t.Fatalf("err: %v", err)
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})
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}
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func TestClient_Init(t *testing.T) {
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dir, err := ioutil.TempDir("", "nomad")
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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defer os.RemoveAll(dir)
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allocDir := filepath.Join(dir, "alloc")
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client := &Client{
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config: &config.Config{
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AllocDir: allocDir,
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},
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logger: log.New(os.Stderr, "", log.LstdFlags),
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}
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if err := client.init(); err != nil {
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t.Fatalf("err: %s", err)
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}
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if _, err := os.Stat(allocDir); err != nil {
|
|
t.Fatalf("err: %s", err)
|
|
}
|
|
}
|