525 lines
12 KiB
Go
525 lines
12 KiB
Go
package nomad
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import (
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"errors"
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"fmt"
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"testing"
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"time"
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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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)
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func TestLeader_LeftServer(t *testing.T) {
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s1 := testServer(t, nil)
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defer s1.Shutdown()
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s2 := testServer(t, func(c *Config) {
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c.DevDisableBootstrap = true
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})
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defer s2.Shutdown()
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s3 := testServer(t, func(c *Config) {
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c.DevDisableBootstrap = true
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})
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defer s3.Shutdown()
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servers := []*Server{s1, s2, s3}
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testJoin(t, s1, s2, s3)
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for _, s := range servers {
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testutil.WaitForResult(func() (bool, error) {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 3, nil
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}, func(err error) {
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t.Fatalf("should have 3 peers")
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})
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}
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// Kill any server
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servers[0].Shutdown()
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testutil.WaitForResult(func() (bool, error) {
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// Force remove the non-leader (transition to left state)
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name := fmt.Sprintf("%s.%s",
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servers[0].config.NodeName, servers[0].config.Region)
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if err := servers[1].RemoveFailedNode(name); err != nil {
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t.Fatalf("err: %v", err)
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}
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for _, s := range servers[1:] {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 2, errors.New(fmt.Sprintf("%v", peers))
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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: %s", err)
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})
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}
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func TestLeader_LeftLeader(t *testing.T) {
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s1 := testServer(t, nil)
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defer s1.Shutdown()
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s2 := testServer(t, func(c *Config) {
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c.DevDisableBootstrap = true
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})
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defer s2.Shutdown()
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s3 := testServer(t, func(c *Config) {
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c.DevDisableBootstrap = true
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})
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defer s3.Shutdown()
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servers := []*Server{s1, s2, s3}
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testJoin(t, s1, s2, s3)
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for _, s := range servers {
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testutil.WaitForResult(func() (bool, error) {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 3, nil
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}, func(err error) {
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t.Fatalf("should have 3 peers")
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})
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}
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// Kill the leader!
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var leader *Server
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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break
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}
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}
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if leader == nil {
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t.Fatalf("Should have a leader")
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}
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leader.Leave()
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leader.Shutdown()
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for _, s := range servers {
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if s == leader {
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continue
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}
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testutil.WaitForResult(func() (bool, error) {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 2, errors.New(fmt.Sprintf("%v", peers))
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}, func(err error) {
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t.Fatalf("should have 2 peers: %v", err)
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})
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}
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}
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func TestLeader_MultiBootstrap(t *testing.T) {
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s1 := testServer(t, nil)
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defer s1.Shutdown()
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s2 := testServer(t, nil)
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defer s2.Shutdown()
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servers := []*Server{s1, s2}
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testJoin(t, s1, s2)
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for _, s := range servers {
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testutil.WaitForResult(func() (bool, error) {
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peers := s.Members()
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return len(peers) == 2, nil
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}, func(err error) {
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t.Fatalf("should have 2 peers")
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})
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}
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// Ensure we don't have multiple raft peers
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for _, s := range servers {
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peers, _ := s.raftPeers.Peers()
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if len(peers) != 1 {
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t.Fatalf("should only have 1 raft peer!")
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}
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}
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}
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func TestLeader_PlanQueue_Reset(t *testing.T) {
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s1 := testServer(t, nil)
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defer s1.Shutdown()
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s2 := testServer(t, func(c *Config) {
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c.DevDisableBootstrap = true
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})
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defer s2.Shutdown()
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s3 := testServer(t, func(c *Config) {
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c.DevDisableBootstrap = true
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})
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defer s3.Shutdown()
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servers := []*Server{s1, s2, s3}
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testJoin(t, s1, s2, s3)
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for _, s := range servers {
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testutil.WaitForResult(func() (bool, error) {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 3, nil
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}, func(err error) {
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t.Fatalf("should have 3 peers")
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})
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}
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var leader *Server
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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break
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}
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}
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if leader == nil {
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t.Fatalf("Should have a leader")
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}
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if !leader.planQueue.Enabled() {
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t.Fatalf("should enable plan queue")
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}
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for _, s := range servers {
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if !s.IsLeader() && s.planQueue.Enabled() {
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t.Fatalf("plan queue should not be enabled")
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}
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}
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// Kill the leader
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leader.Shutdown()
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time.Sleep(100 * time.Millisecond)
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// Wait for a new leader
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leader = nil
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testutil.WaitForResult(func() (bool, error) {
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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return true, nil
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}
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}
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return false, nil
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}, func(err error) {
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t.Fatalf("should have leader")
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})
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// Check that the new leader has a pending GC expiration
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testutil.WaitForResult(func() (bool, error) {
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return leader.planQueue.Enabled(), nil
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}, func(err error) {
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t.Fatalf("should enable plan queue")
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})
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}
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func TestLeader_EvalBroker_Reset(t *testing.T) {
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s1 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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})
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defer s1.Shutdown()
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s2 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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c.DevDisableBootstrap = true
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})
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defer s2.Shutdown()
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s3 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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c.DevDisableBootstrap = true
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})
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defer s3.Shutdown()
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servers := []*Server{s1, s2, s3}
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testJoin(t, s1, s2, s3)
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testutil.WaitForLeader(t, s1.RPC)
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for _, s := range servers {
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testutil.WaitForResult(func() (bool, error) {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 3, nil
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}, func(err error) {
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t.Fatalf("should have 3 peers")
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})
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}
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var leader *Server
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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break
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}
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}
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if leader == nil {
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t.Fatalf("Should have a leader")
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}
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// Inject a pending eval
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req := structs.EvalUpdateRequest{
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Evals: []*structs.Evaluation{mock.Eval()},
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}
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_, _, err := leader.raftApply(structs.EvalUpdateRequestType, req)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Kill the leader
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leader.Shutdown()
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time.Sleep(100 * time.Millisecond)
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// Wait for a new leader
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leader = nil
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testutil.WaitForResult(func() (bool, error) {
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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return true, nil
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}
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}
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return false, nil
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}, func(err error) {
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t.Fatalf("should have leader")
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})
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// Check that the new leader has a pending evaluation
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testutil.WaitForResult(func() (bool, error) {
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stats := leader.evalBroker.Stats()
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return stats.TotalReady == 1, nil
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}, func(err error) {
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t.Fatalf("should have pending evaluation")
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})
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}
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func TestLeader_PeriodicDispatcher_Restore_Adds(t *testing.T) {
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s1 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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})
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defer s1.Shutdown()
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s2 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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c.DevDisableBootstrap = true
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})
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defer s2.Shutdown()
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s3 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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c.DevDisableBootstrap = true
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})
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defer s3.Shutdown()
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servers := []*Server{s1, s2, s3}
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testJoin(t, s1, s2, s3)
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testutil.WaitForLeader(t, s1.RPC)
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for _, s := range servers {
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testutil.WaitForResult(func() (bool, error) {
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peers, _ := s.raftPeers.Peers()
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return len(peers) == 3, nil
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}, func(err error) {
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t.Fatalf("should have 3 peers")
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})
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}
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var leader *Server
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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break
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}
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}
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if leader == nil {
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t.Fatalf("Should have a leader")
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}
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// Inject a periodic job and non-periodic job
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periodic := mock.PeriodicJob()
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nonPeriodic := mock.Job()
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for _, job := range []*structs.Job{nonPeriodic, periodic} {
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req := structs.JobRegisterRequest{
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Job: job,
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}
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_, _, err := leader.raftApply(structs.JobRegisterRequestType, req)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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}
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// Kill the leader
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leader.Shutdown()
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time.Sleep(100 * time.Millisecond)
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// Wait for a new leader
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leader = nil
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testutil.WaitForResult(func() (bool, error) {
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for _, s := range servers {
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if s.IsLeader() {
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leader = s
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return true, nil
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}
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}
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return false, nil
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}, func(err error) {
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t.Fatalf("should have leader")
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})
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// Check that the new leader is tracking the periodic job.
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testutil.WaitForResult(func() (bool, error) {
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_, tracked := leader.periodicDispatcher.tracked[periodic.ID]
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return tracked, nil
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}, func(err error) {
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t.Fatalf("periodic job not tracked")
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})
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}
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func TestLeader_PeriodicDispatcher_Restore_NoEvals(t *testing.T) {
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s1 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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})
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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// Inject a periodic job that will be triggered soon.
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launch := time.Now().Add(1 * time.Second)
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job := testPeriodicJob(launch)
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req := structs.JobRegisterRequest{
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Job: job,
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}
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_, _, err := s1.raftApply(structs.JobRegisterRequestType, req)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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// Flush the periodic dispatcher, ensuring that no evals will be created.
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s1.periodicDispatcher.SetEnabled(false)
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// Get the current time to ensure the launch time is after this once we
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// restore.
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now := time.Now()
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// Sleep till after the job should have been launched.
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time.Sleep(3 * time.Second)
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// Restore the periodic dispatcher.
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s1.periodicDispatcher.SetEnabled(true)
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s1.periodicDispatcher.Start()
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s1.restorePeriodicDispatcher()
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// Ensure the job is tracked.
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if _, tracked := s1.periodicDispatcher.tracked[job.ID]; !tracked {
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t.Fatalf("periodic job not restored")
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}
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// Check that an eval was made.
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last, err := s1.fsm.State().PeriodicLaunchByID(job.ID)
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if err != nil || last == nil {
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t.Fatalf("failed to get periodic launch time: %v", err)
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}
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if last.Launch.Before(now) {
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t.Fatalf("restorePeriodicDispatcher did not force launch: last %v; want after %v", last.Launch, now)
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}
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}
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func TestLeader_PeriodicDispatcher_Restore_Evals(t *testing.T) {
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s1 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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})
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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// Inject a periodic job that triggered once in the past, should trigger now
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// and once in the future.
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now := time.Now()
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past := now.Add(-1 * time.Second)
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future := now.Add(10 * time.Second)
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job := testPeriodicJob(past, now, future)
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req := structs.JobRegisterRequest{
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Job: job,
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}
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_, _, err := s1.raftApply(structs.JobRegisterRequestType, req)
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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 an eval for the past launch.
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s1.periodicDispatcher.createEval(job, past)
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// Flush the periodic dispatcher, ensuring that no evals will be created.
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s1.periodicDispatcher.SetEnabled(false)
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// Sleep till after the job should have been launched.
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time.Sleep(3 * time.Second)
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// Restore the periodic dispatcher.
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s1.periodicDispatcher.SetEnabled(true)
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s1.periodicDispatcher.Start()
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s1.restorePeriodicDispatcher()
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// Ensure the job is tracked.
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if _, tracked := s1.periodicDispatcher.tracked[job.ID]; !tracked {
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t.Fatalf("periodic job not restored")
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}
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// Check that an eval was made.
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last, err := s1.fsm.State().PeriodicLaunchByID(job.ID)
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if err != nil || last == nil {
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t.Fatalf("failed to get periodic launch time: %v", err)
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}
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if last.Launch == past {
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t.Fatalf("restorePeriodicDispatcher did not force launch")
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}
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}
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func TestLeader_PeriodicDispatch(t *testing.T) {
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s1 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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c.EvalGCInterval = 5 * time.Millisecond
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})
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defer s1.Shutdown()
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// Wait for a periodic dispatch
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testutil.WaitForResult(func() (bool, error) {
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stats := s1.evalBroker.Stats()
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bySched, ok := stats.ByScheduler[structs.JobTypeCore]
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if !ok {
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return false, nil
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}
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return bySched.Ready > 0, nil
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}, func(err error) {
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t.Fatalf("should pending job")
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})
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}
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func TestLeader_ReapFailedEval(t *testing.T) {
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s1 := testServer(t, func(c *Config) {
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c.NumSchedulers = 0
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c.EvalDeliveryLimit = 1
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})
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defer s1.Shutdown()
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testutil.WaitForLeader(t, s1.RPC)
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// Wait for a periodic dispatch
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eval := mock.Eval()
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testutil.WaitForResult(func() (bool, error) {
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err := s1.evalBroker.Enqueue(eval)
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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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// Dequeue and Nack
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out, token, err := s1.evalBroker.Dequeue(defaultSched, time.Second)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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s1.evalBroker.Nack(out.ID, token)
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// Wait updated evaluation
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state := s1.fsm.State()
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testutil.WaitForResult(func() (bool, error) {
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out, err := state.EvalByID(eval.ID)
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if err != nil {
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return false, err
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}
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return out != nil && out.Status == structs.EvalStatusFailed, 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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