-
Notifications
You must be signed in to change notification settings - Fork 2k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #7383 from hashicorp/b-health-detect-failing-tasks
health: detect failing tasks
- Loading branch information
Showing
3 changed files
with
374 additions
and
25 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,229 @@ | ||
| package allochealth | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "sync/atomic" | ||
| "testing" | ||
| "time" | ||
|
|
||
| consulapi "github.com/hashicorp/consul/api" | ||
| "github.com/hashicorp/nomad/client/consul" | ||
| cstructs "github.com/hashicorp/nomad/client/structs" | ||
| agentconsul "github.com/hashicorp/nomad/command/agent/consul" | ||
| "github.com/hashicorp/nomad/helper/testlog" | ||
| "github.com/hashicorp/nomad/nomad/mock" | ||
| "github.com/hashicorp/nomad/nomad/structs" | ||
| "github.com/hashicorp/nomad/testutil" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestTracker_Checks_Healthy(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| alloc := mock.Alloc() | ||
| alloc.Job.TaskGroups[0].Migrate.MinHealthyTime = 1 // let's speed things up | ||
| task := alloc.Job.TaskGroups[0].Tasks[0] | ||
|
|
||
| // Synthesize running alloc and tasks | ||
| alloc.ClientStatus = structs.AllocClientStatusRunning | ||
| alloc.TaskStates = map[string]*structs.TaskState{ | ||
| task.Name: { | ||
| State: structs.TaskStateRunning, | ||
| StartedAt: time.Now(), | ||
| }, | ||
| } | ||
|
|
||
| // Make Consul response | ||
| check := &consulapi.AgentCheck{ | ||
| Name: task.Services[0].Checks[0].Name, | ||
| Status: consulapi.HealthPassing, | ||
| } | ||
| taskRegs := map[string]*agentconsul.ServiceRegistrations{ | ||
| task.Name: { | ||
| Services: map[string]*agentconsul.ServiceRegistration{ | ||
| task.Services[0].Name: { | ||
| Service: &consulapi.AgentService{ | ||
| ID: "foo", | ||
| Service: task.Services[0].Name, | ||
| }, | ||
| Checks: []*consulapi.AgentCheck{check}, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| logger := testlog.HCLogger(t) | ||
| b := cstructs.NewAllocBroadcaster(logger) | ||
| defer b.Close() | ||
|
|
||
| // Don't reply on the first call | ||
| var called uint64 | ||
| consul := consul.NewMockConsulServiceClient(t, logger) | ||
| consul.AllocRegistrationsFn = func(string) (*agentconsul.AllocRegistration, error) { | ||
| if atomic.AddUint64(&called, 1) == 1 { | ||
| return nil, nil | ||
| } | ||
|
|
||
| reg := &agentconsul.AllocRegistration{ | ||
| Tasks: taskRegs, | ||
| } | ||
|
|
||
| return reg, nil | ||
| } | ||
|
|
||
| ctx, cancelFn := context.WithCancel(context.Background()) | ||
| defer cancelFn() | ||
|
|
||
| checkInterval := 10 * time.Millisecond | ||
| tracker := NewTracker(ctx, logger, alloc, b.Listen(), consul, | ||
| time.Millisecond, true) | ||
| tracker.checkLookupInterval = checkInterval | ||
| tracker.Start() | ||
|
|
||
| select { | ||
| case <-time.After(4 * checkInterval): | ||
| require.Fail(t, "timed out while waiting for health") | ||
| case h := <-tracker.HealthyCh(): | ||
| require.True(t, h) | ||
| } | ||
| } | ||
|
|
||
| func TestTracker_Checks_Unhealthy(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| alloc := mock.Alloc() | ||
| alloc.Job.TaskGroups[0].Migrate.MinHealthyTime = 1 // let's speed things up | ||
| task := alloc.Job.TaskGroups[0].Tasks[0] | ||
|
|
||
| newCheck := task.Services[0].Checks[0].Copy() | ||
| newCheck.Name = "failing-check" | ||
| task.Services[0].Checks = append(task.Services[0].Checks, newCheck) | ||
|
|
||
| // Synthesize running alloc and tasks | ||
| alloc.ClientStatus = structs.AllocClientStatusRunning | ||
| alloc.TaskStates = map[string]*structs.TaskState{ | ||
| task.Name: { | ||
| State: structs.TaskStateRunning, | ||
| StartedAt: time.Now(), | ||
| }, | ||
| } | ||
|
|
||
| // Make Consul response | ||
| checkHealthy := &consulapi.AgentCheck{ | ||
| Name: task.Services[0].Checks[0].Name, | ||
| Status: consulapi.HealthPassing, | ||
| } | ||
| checksUnhealthy := &consulapi.AgentCheck{ | ||
| Name: task.Services[0].Checks[1].Name, | ||
| Status: consulapi.HealthCritical, | ||
| } | ||
| taskRegs := map[string]*agentconsul.ServiceRegistrations{ | ||
| task.Name: { | ||
| Services: map[string]*agentconsul.ServiceRegistration{ | ||
| task.Services[0].Name: { | ||
| Service: &consulapi.AgentService{ | ||
| ID: "foo", | ||
| Service: task.Services[0].Name, | ||
| }, | ||
| Checks: []*consulapi.AgentCheck{checkHealthy, checksUnhealthy}, | ||
| }, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| logger := testlog.HCLogger(t) | ||
| b := cstructs.NewAllocBroadcaster(logger) | ||
| defer b.Close() | ||
|
|
||
| // Don't reply on the first call | ||
| var called uint64 | ||
| consul := consul.NewMockConsulServiceClient(t, logger) | ||
| consul.AllocRegistrationsFn = func(string) (*agentconsul.AllocRegistration, error) { | ||
| if atomic.AddUint64(&called, 1) == 1 { | ||
| return nil, nil | ||
| } | ||
|
|
||
| reg := &agentconsul.AllocRegistration{ | ||
| Tasks: taskRegs, | ||
| } | ||
|
|
||
| return reg, nil | ||
| } | ||
|
|
||
| ctx, cancelFn := context.WithCancel(context.Background()) | ||
| defer cancelFn() | ||
|
|
||
| checkInterval := 10 * time.Millisecond | ||
| tracker := NewTracker(ctx, logger, alloc, b.Listen(), consul, | ||
| time.Millisecond, true) | ||
| tracker.checkLookupInterval = checkInterval | ||
| tracker.Start() | ||
|
|
||
| testutil.WaitForResult(func() (bool, error) { | ||
| lookup := atomic.LoadUint64(&called) | ||
| return lookup < 4, fmt.Errorf("wait to get more task registration lookups: %v", lookup) | ||
| }, func(err error) { | ||
| require.NoError(t, err) | ||
| }) | ||
|
|
||
| tracker.l.Lock() | ||
| require.False(t, tracker.checksHealthy) | ||
| tracker.l.Unlock() | ||
|
|
||
| select { | ||
| case v := <-tracker.HealthyCh(): | ||
| require.Failf(t, "expected no health value", " got %v", v) | ||
| default: | ||
| // good | ||
| } | ||
| } | ||
|
|
||
| func TestTracker_Healthy_IfBothTasksAndConsulChecksAreHealthy(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| alloc := mock.Alloc() | ||
| logger := testlog.HCLogger(t) | ||
|
|
||
| ctx, cancelFn := context.WithCancel(context.Background()) | ||
| defer cancelFn() | ||
|
|
||
| tracker := NewTracker(ctx, logger, alloc, nil, nil, | ||
| time.Millisecond, true) | ||
|
|
||
| assertNoHealth := func() { | ||
| require.NoError(t, tracker.ctx.Err()) | ||
| select { | ||
| case v := <-tracker.HealthyCh(): | ||
| require.Failf(t, "unexpected healthy event", "got %v", v) | ||
| default: | ||
| } | ||
| } | ||
|
|
||
| // first set task health without checks | ||
| tracker.setTaskHealth(true, false) | ||
| assertNoHealth() | ||
|
|
||
| // now fail task health again before checks are successful | ||
| tracker.setTaskHealth(false, false) | ||
| assertNoHealth() | ||
|
|
||
| // now pass health checks - do not propagate health yet | ||
| tracker.setCheckHealth(true) | ||
| assertNoHealth() | ||
|
|
||
| // set tasks to healthy - don't propagate health yet, wait for the next check | ||
| tracker.setTaskHealth(true, false) | ||
| assertNoHealth() | ||
|
|
||
| // set checks to true, now propagate health status | ||
| tracker.setCheckHealth(true) | ||
|
|
||
| require.Error(t, tracker.ctx.Err()) | ||
| select { | ||
| case v := <-tracker.HealthyCh(): | ||
| require.True(t, v) | ||
| default: | ||
| require.Fail(t, "expected a health status") | ||
| } | ||
| } |
Oops, something went wrong.