open-nomad/client/alloc_runner_test.go
Alex Dadgar 553bc91725 Parallel client tests (#2890)
* alloc_runner

* Random tests

* parallel task_runner and no exec compatible check

* Parallel client

* Fail fast and use random ports

* Fix docker port mapping

* Make concurrent pull less timing dependant

* up parallel

* Fixes

* don't build chroots in parallel on travis

* Reduce parallelism on travis with lxc/rkt

* make java test app not run forever

* drop parallelism a little

* use docker ports that are out of the os's ephemeral port range

* Limit even more on travis

* rkt deadline
2017-07-22 19:04:36 -07:00

1304 lines
38 KiB
Go

package client
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"sync"
"testing"
"text/template"
"time"
"github.com/boltdb/bolt"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/nomad/nomad/mock"
"github.com/hashicorp/nomad/nomad/structs"
"github.com/hashicorp/nomad/testutil"
"github.com/kr/pretty"
"github.com/hashicorp/nomad/client/config"
"github.com/hashicorp/nomad/client/vaultclient"
)
type MockAllocStateUpdater struct {
Allocs []*structs.Allocation
mu sync.Mutex
}
// Update fulfills the TaskStateUpdater interface
func (m *MockAllocStateUpdater) Update(alloc *structs.Allocation) {
m.mu.Lock()
m.Allocs = append(m.Allocs, alloc)
m.mu.Unlock()
}
// Last returns the total number of updates and the last alloc (or nil)
func (m *MockAllocStateUpdater) Last() (int, *structs.Allocation) {
m.mu.Lock()
defer m.mu.Unlock()
n := len(m.Allocs)
if n == 0 {
return 0, nil
}
return n, m.Allocs[n-1].Copy()
}
func testAllocRunnerFromAlloc(alloc *structs.Allocation, restarts bool) (*MockAllocStateUpdater, *AllocRunner) {
logger := testLogger()
conf := config.DefaultConfig()
conf.Node = mock.Node()
conf.StateDir = os.TempDir()
conf.AllocDir = os.TempDir()
tmp, _ := ioutil.TempFile("", "state-db")
db, _ := bolt.Open(tmp.Name(), 0600, nil)
upd := &MockAllocStateUpdater{}
if !restarts {
*alloc.Job.LookupTaskGroup(alloc.TaskGroup).RestartPolicy = structs.RestartPolicy{Attempts: 0}
alloc.Job.Type = structs.JobTypeBatch
}
vclient := vaultclient.NewMockVaultClient()
ar := NewAllocRunner(logger, conf, db, upd.Update, alloc, vclient, newMockConsulServiceClient())
return upd, ar
}
func testAllocRunner(restarts bool) (*MockAllocStateUpdater, *AllocRunner) {
// Use mock driver
alloc := mock.Alloc()
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "500ms"
return testAllocRunnerFromAlloc(alloc, restarts)
}
func TestAllocRunner_SimpleRun(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
// Test that the watcher will mark the allocation as unhealthy.
func TestAllocRunner_DeploymentHealth_Unhealthy_BadStart(t *testing.T) {
t.Parallel()
// Ensure the task fails and restarts
upd, ar := testAllocRunner(false)
// Make the task fail
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["start_error"] = "test error"
// Make the alloc be part of a deployment
ar.alloc.DeploymentID = structs.GenerateUUID()
ar.alloc.Job.TaskGroups[0].Update = structs.DefaultUpdateStrategy.Copy()
ar.alloc.Job.TaskGroups[0].Update.HealthCheck = structs.UpdateStrategyHealthCheck_TaskStates
ar.alloc.Job.TaskGroups[0].Update.MaxParallel = 1
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.DeploymentStatus == nil || last.DeploymentStatus.Healthy == nil {
return false, fmt.Errorf("want deployment status unhealthy; got unset")
} else if *last.DeploymentStatus.Healthy {
return false, fmt.Errorf("want deployment status unhealthy; got healthy")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
// Test that the watcher will mark the allocation as unhealthy if it hits its
// deadline.
func TestAllocRunner_DeploymentHealth_Unhealthy_Deadline(t *testing.T) {
t.Parallel()
// Ensure the task fails and restarts
upd, ar := testAllocRunner(false)
// Make the task block
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["start_block_for"] = "2s"
task.Config["run_for"] = "10s"
// Make the alloc be part of a deployment
ar.alloc.DeploymentID = structs.GenerateUUID()
ar.alloc.Job.TaskGroups[0].Update = structs.DefaultUpdateStrategy.Copy()
ar.alloc.Job.TaskGroups[0].Update.HealthCheck = structs.UpdateStrategyHealthCheck_TaskStates
ar.alloc.Job.TaskGroups[0].Update.MaxParallel = 1
ar.alloc.Job.TaskGroups[0].Update.HealthyDeadline = 100 * time.Millisecond
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.DeploymentStatus == nil || last.DeploymentStatus.Healthy == nil {
return false, fmt.Errorf("want deployment status unhealthy; got unset")
} else if *last.DeploymentStatus.Healthy {
return false, fmt.Errorf("want deployment status unhealthy; got healthy")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
// Test that the watcher will mark the allocation as healthy.
func TestAllocRunner_DeploymentHealth_Healthy_NoChecks(t *testing.T) {
t.Parallel()
// Ensure the task fails and restarts
upd, ar := testAllocRunner(false)
// Make the task run healthy
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "10s"
// Create a task that takes longer to become healthy
ar.alloc.Job.TaskGroups[0].Tasks = append(ar.alloc.Job.TaskGroups[0].Tasks, task.Copy())
task2 := ar.alloc.Job.TaskGroups[0].Tasks[1]
task2.Name = "task 2"
task2.Config["start_block_for"] = "500ms"
// Make the alloc be part of a deployment
ar.alloc.DeploymentID = structs.GenerateUUID()
ar.alloc.Job.TaskGroups[0].Update = structs.DefaultUpdateStrategy.Copy()
ar.alloc.Job.TaskGroups[0].Update.HealthCheck = structs.UpdateStrategyHealthCheck_TaskStates
ar.alloc.Job.TaskGroups[0].Update.MaxParallel = 1
ar.alloc.Job.TaskGroups[0].Update.MinHealthyTime = 100 * time.Millisecond
start := time.Now()
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.DeploymentStatus == nil || last.DeploymentStatus.Healthy == nil {
return false, fmt.Errorf("want deployment status unhealthy; got unset")
} else if !*last.DeploymentStatus.Healthy {
return false, fmt.Errorf("want deployment status healthy; got unhealthy")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
if d := time.Now().Sub(start); d < 500*time.Millisecond {
t.Fatalf("didn't wait for second task group. Only took %v", d)
}
}
// Test that the watcher will mark the allocation as healthy with checks
func TestAllocRunner_DeploymentHealth_Healthy_Checks(t *testing.T) {
t.Parallel()
// Ensure the task fails and restarts
upd, ar := testAllocRunner(false)
// Make the task fail
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "10s"
// Create a task that has no checks
ar.alloc.Job.TaskGroups[0].Tasks = append(ar.alloc.Job.TaskGroups[0].Tasks, task.Copy())
task2 := ar.alloc.Job.TaskGroups[0].Tasks[1]
task2.Name = "task 2"
task2.Services = nil
// Make the alloc be part of a deployment
ar.alloc.DeploymentID = structs.GenerateUUID()
ar.alloc.Job.TaskGroups[0].Update = structs.DefaultUpdateStrategy.Copy()
ar.alloc.Job.TaskGroups[0].Update.HealthCheck = structs.UpdateStrategyHealthCheck_Checks
ar.alloc.Job.TaskGroups[0].Update.MaxParallel = 1
ar.alloc.Job.TaskGroups[0].Update.MinHealthyTime = 100 * time.Millisecond
checkHealthy := &api.AgentCheck{
CheckID: structs.GenerateUUID(),
Status: api.HealthPassing,
}
checkUnhealthy := &api.AgentCheck{
CheckID: checkHealthy.CheckID,
Status: api.HealthWarning,
}
// Only return the check as healthy after a duration
trigger := time.After(500 * time.Millisecond)
ar.consulClient.(*mockConsulServiceClient).checksFn = func(a *structs.Allocation) ([]*api.AgentCheck, error) {
select {
case <-trigger:
return []*api.AgentCheck{checkHealthy}, nil
default:
return []*api.AgentCheck{checkUnhealthy}, nil
}
}
start := time.Now()
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.DeploymentStatus == nil || last.DeploymentStatus.Healthy == nil {
return false, fmt.Errorf("want deployment status unhealthy; got unset")
} else if !*last.DeploymentStatus.Healthy {
return false, fmt.Errorf("want deployment status healthy; got unhealthy")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
if d := time.Now().Sub(start); d < 500*time.Millisecond {
t.Fatalf("didn't wait for second task group. Only took %v", d)
}
}
// Test that the watcher will mark the allocation as healthy.
func TestAllocRunner_DeploymentHealth_Healthy_UpdatedDeployment(t *testing.T) {
t.Parallel()
// Ensure the task fails and restarts
upd, ar := testAllocRunner(false)
// Make the task run healthy
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "30s"
// Make the alloc be part of a deployment
ar.alloc.DeploymentID = structs.GenerateUUID()
ar.alloc.Job.TaskGroups[0].Update = structs.DefaultUpdateStrategy.Copy()
ar.alloc.Job.TaskGroups[0].Update.HealthCheck = structs.UpdateStrategyHealthCheck_TaskStates
ar.alloc.Job.TaskGroups[0].Update.MaxParallel = 1
ar.alloc.Job.TaskGroups[0].Update.MinHealthyTime = 100 * time.Millisecond
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.DeploymentStatus == nil || last.DeploymentStatus.Healthy == nil {
return false, fmt.Errorf("want deployment status unhealthy; got unset")
} else if !*last.DeploymentStatus.Healthy {
return false, fmt.Errorf("want deployment status healthy; got unhealthy")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Mimick an update to a new deployment id
oldCount, last := upd.Last()
last.DeploymentStatus = nil
last.DeploymentID = structs.GenerateUUID()
ar.Update(last)
testutil.WaitForResult(func() (bool, error) {
newCount, last := upd.Last()
if newCount <= oldCount {
return false, fmt.Errorf("No new updates")
}
if last.DeploymentStatus == nil || last.DeploymentStatus.Healthy == nil {
return false, fmt.Errorf("want deployment status unhealthy; got unset")
} else if !*last.DeploymentStatus.Healthy {
return false, fmt.Errorf("want deployment status healthy; got unhealthy")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
// TestAllocRuner_RetryArtifact ensures that if one task in a task group is
// retrying fetching an artifact, other tasks in the group should be able
// to proceed.
func TestAllocRunner_RetryArtifact(t *testing.T) {
t.Parallel()
alloc := mock.Alloc()
alloc.Job.Type = structs.JobTypeBatch
alloc.Job.TaskGroups[0].RestartPolicy.Mode = structs.RestartPolicyModeFail
alloc.Job.TaskGroups[0].RestartPolicy.Attempts = 1
alloc.Job.TaskGroups[0].RestartPolicy.Delay = time.Duration(4*testutil.TestMultiplier()) * time.Second
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"exit_code": "0",
"run_for": "1s",
}
// Create a new task with a bad artifact
badtask := alloc.Job.TaskGroups[0].Tasks[0].Copy()
badtask.Name = "bad"
badtask.Artifacts = []*structs.TaskArtifact{
{GetterSource: "http://127.0.0.1:0/foo/bar/baz"},
}
alloc.Job.TaskGroups[0].Tasks = append(alloc.Job.TaskGroups[0].Tasks, badtask)
upd, ar := testAllocRunnerFromAlloc(alloc, true)
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
count, last := upd.Last()
if min := 6; count < min {
return false, fmt.Errorf("Not enough updates (%d < %d)", count, min)
}
// web task should have completed successfully while bad task
// retries artififact fetching
webstate := last.TaskStates["web"]
if webstate.State != structs.TaskStateDead {
return false, fmt.Errorf("expected web to be dead but found %q", last.TaskStates["web"].State)
}
if !webstate.Successful() {
return false, fmt.Errorf("expected web to have exited successfully")
}
// bad task should have failed
badstate := last.TaskStates["bad"]
if badstate.State != structs.TaskStateDead {
return false, fmt.Errorf("expected bad to be dead but found %q", badstate.State)
}
if !badstate.Failed {
return false, fmt.Errorf("expected bad to have failed: %#v", badstate.Events)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
func TestAllocRunner_TerminalUpdate_Destroy(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
// Ensure task takes some time
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "10s"
go ar.Run()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusRunning {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusRunning)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Update the alloc to be terminal which should cause the alloc runner to
// stop the tasks and wait for a destroy.
update := ar.alloc.Copy()
update.DesiredStatus = structs.AllocDesiredStatusStop
ar.Update(update)
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
// Check the status has changed.
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got client status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
// Check the allocation state still exists
if err := ar.stateDB.View(func(tx *bolt.Tx) error {
if !allocationBucketExists(tx, ar.Alloc().ID) {
return fmt.Errorf("no bucket for alloc")
}
return nil
}); err != nil {
return false, fmt.Errorf("state destroyed")
}
// Check the alloc directory still exists
if _, err := os.Stat(ar.allocDir.AllocDir); err != nil {
return false, fmt.Errorf("alloc dir destroyed: %v", ar.allocDir.AllocDir)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Send the destroy signal and ensure the AllocRunner cleans up.
ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
// Check the status has changed.
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got client status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
// Check the state was cleaned
if err := ar.stateDB.View(func(tx *bolt.Tx) error {
if allocationBucketExists(tx, ar.Alloc().ID) {
return fmt.Errorf("bucket for alloc exists")
}
return nil
}); err != nil {
return false, fmt.Errorf("state not destroyed")
}
// Check the alloc directory was cleaned
if _, err := os.Stat(ar.allocDir.AllocDir); err == nil {
return false, fmt.Errorf("alloc dir still exists: %v", ar.allocDir.AllocDir)
} else if !os.IsNotExist(err) {
return false, fmt.Errorf("stat err: %v", err)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
func TestAllocRunner_Destroy(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
// Ensure task takes some time
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "10s"
go ar.Run()
start := time.Now()
// Begin the tear down
go func() {
time.Sleep(1 * time.Second)
ar.Destroy()
}()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
// Check the status has changed.
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got client status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
// Check the state was cleaned
if err := ar.stateDB.View(func(tx *bolt.Tx) error {
if allocationBucketExists(tx, ar.Alloc().ID) {
return fmt.Errorf("bucket for alloc exists")
}
return nil
}); err != nil {
return false, fmt.Errorf("state not destroyed: %v", err)
}
// Check the alloc directory was cleaned
if _, err := os.Stat(ar.allocDir.AllocDir); err == nil {
return false, fmt.Errorf("alloc dir still exists: %v", ar.allocDir.AllocDir)
} else if !os.IsNotExist(err) {
return false, fmt.Errorf("stat err: %v", err)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
if elapsed := time.Since(start); elapsed > 20*time.Second {
t.Fatalf("took too long to terminate: %s", elapsed)
}
}
func TestAllocRunner_Update(t *testing.T) {
t.Parallel()
_, ar := testAllocRunner(false)
// Deep copy the alloc to avoid races when updating
newAlloc := ar.Alloc().Copy()
// Ensure task takes some time
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config["run_for"] = "10s"
go ar.Run()
defer ar.Destroy()
// Update the alloc definition
newAlloc.Name = "FOO"
newAlloc.AllocModifyIndex++
ar.Update(newAlloc)
// Check the alloc runner stores the update allocation.
testutil.WaitForResult(func() (bool, error) {
return ar.Alloc().Name == "FOO", nil
}, func(err error) {
t.Fatalf("err: %v %#v", err, ar.Alloc())
})
}
func TestAllocRunner_SaveRestoreState(t *testing.T) {
t.Parallel()
alloc := mock.Alloc()
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"exit_code": "0",
"run_for": "10s",
}
upd, ar := testAllocRunnerFromAlloc(alloc, false)
go ar.Run()
defer ar.Destroy()
// Snapshot state
testutil.WaitForResult(func() (bool, error) {
ar.taskLock.RLock()
defer ar.taskLock.RUnlock()
return len(ar.tasks) == 1, nil
}, func(err error) {
t.Fatalf("task never started: %v", err)
})
err := ar.SaveState()
if err != nil {
t.Fatalf("err: %v", err)
}
// Create a new alloc runner
l2 := prefixedTestLogger("----- ar2: ")
ar2 := NewAllocRunner(l2, ar.config, ar.stateDB, upd.Update,
&structs.Allocation{ID: ar.alloc.ID}, ar.vaultClient,
ar.consulClient)
err = ar2.RestoreState()
if err != nil {
t.Fatalf("err: %v", err)
}
go ar2.Run()
testutil.WaitForResult(func() (bool, error) {
if len(ar2.tasks) != 1 {
return false, fmt.Errorf("Incorrect number of tasks")
}
_, last := upd.Last()
if last == nil {
return false, nil
}
return last.ClientStatus == structs.AllocClientStatusRunning, nil
}, func(err error) {
_, last := upd.Last()
t.Fatalf("err: %v %#v %#v", err, last, last.TaskStates["web"])
})
// Destroy and wait
ar2.Destroy()
start := time.Now()
testutil.WaitForResult(func() (bool, error) {
alloc := ar2.Alloc()
if alloc.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("Bad client status; got %v; want %v", alloc.ClientStatus, structs.AllocClientStatusComplete)
}
return true, nil
}, func(err error) {
_, last := upd.Last()
t.Fatalf("err: %v %#v %#v", err, last, last.TaskStates)
})
if time.Since(start) > time.Duration(testutil.TestMultiplier()*5)*time.Second {
t.Fatalf("took too long to terminate")
}
}
func TestAllocRunner_SaveRestoreState_TerminalAlloc(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
ar.logger = prefixedTestLogger("ar1: ")
// Ensure task takes some time
ar.alloc.Job.TaskGroups[0].Tasks[0].Driver = "mock_driver"
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Config["run_for"] = "10s"
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusRunning {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusRunning)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Update the alloc to be terminal which should cause the alloc runner to
// stop the tasks and wait for a destroy.
update := ar.alloc.Copy()
update.DesiredStatus = structs.AllocDesiredStatusStop
ar.Update(update)
testutil.WaitForResult(func() (bool, error) {
return ar.Alloc().DesiredStatus == structs.AllocDesiredStatusStop, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
err := ar.SaveState()
if err != nil {
t.Fatalf("err: %v", err)
}
// Ensure ar1 doesn't recreate the state file
ar.allocLock.Lock()
defer ar.allocLock.Unlock()
// Create a new alloc runner
ar2 := NewAllocRunner(ar.logger, ar.config, ar.stateDB, upd.Update,
&structs.Allocation{ID: ar.alloc.ID}, ar.vaultClient, ar.consulClient)
ar2.logger = prefixedTestLogger("ar2: ")
err = ar2.RestoreState()
if err != nil {
t.Fatalf("err: %v", err)
}
ar2.logger.Println("[TESTING] running second alloc runner")
go ar2.Run()
defer ar2.Destroy() // Just-in-case of failure before Destroy below
testutil.WaitForResult(func() (bool, error) {
// Check the state still exists
if err := ar.stateDB.View(func(tx *bolt.Tx) error {
if !allocationBucketExists(tx, ar2.Alloc().ID) {
return fmt.Errorf("no bucket for alloc")
}
return nil
}); err != nil {
return false, fmt.Errorf("state destroyed")
}
// Check the alloc directory still exists
if _, err := os.Stat(ar.allocDir.AllocDir); err != nil {
return false, fmt.Errorf("alloc dir destroyed: %v", ar.allocDir.AllocDir)
}
return true, nil
}, func(err error) {
_, last := upd.Last()
t.Fatalf("err: %v %#v %#v", err, last, last.TaskStates)
})
// Send the destroy signal and ensure the AllocRunner cleans up.
ar2.logger.Println("[TESTING] destroying second alloc runner")
ar2.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
// Check the status has changed.
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got client status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
// Check the state was cleaned
if err := ar.stateDB.View(func(tx *bolt.Tx) error {
if allocationBucketExists(tx, ar2.Alloc().ID) {
return fmt.Errorf("bucket for alloc exists")
}
return nil
}); err != nil {
return false, fmt.Errorf("state not destroyed")
}
// Check the alloc directory was cleaned
if _, err := os.Stat(ar.allocDir.AllocDir); err == nil {
return false, fmt.Errorf("alloc dir still exists: %v", ar.allocDir.AllocDir)
} else if !os.IsNotExist(err) {
return false, fmt.Errorf("stat err: %v", err)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
// TestAllocRunner_SaveRestoreState_Upgrade asserts that pre-0.6 exec tasks are
// restarted on upgrade.
func TestAllocRunner_SaveRestoreState_Upgrade(t *testing.T) {
t.Parallel()
alloc := mock.Alloc()
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"exit_code": "0",
"run_for": "10s",
}
upd, ar := testAllocRunnerFromAlloc(alloc, false)
// Hack in old version to cause an upgrade on RestoreState
origConfig := ar.config.Copy()
ar.config.Version = "0.5.6"
go ar.Run()
defer ar.Destroy()
// Snapshot state
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusRunning {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusRunning)
}
return true, nil
}, func(err error) {
t.Fatalf("task never started: %v", err)
})
err := ar.SaveState()
if err != nil {
t.Fatalf("err: %v", err)
}
// Create a new alloc runner
l2 := prefixedTestLogger("----- ar2: ")
ar2 := NewAllocRunner(l2, origConfig, ar.stateDB, upd.Update, &structs.Allocation{ID: ar.alloc.ID}, ar.vaultClient, ar.consulClient)
err = ar2.RestoreState()
if err != nil {
t.Fatalf("err: %v", err)
}
go ar2.Run()
defer ar2.Destroy() // Just-in-case of failure before Destroy below
testutil.WaitForResult(func() (bool, error) {
count, last := upd.Last()
if min := 3; count < min {
return false, fmt.Errorf("expected at least %d updates but found %d", min, count)
}
for _, ev := range last.TaskStates["web"].Events {
if strings.HasSuffix(ev.RestartReason, pre06ScriptCheckReason) {
return true, nil
}
}
return false, fmt.Errorf("no restart with proper reason found")
}, func(err error) {
count, last := upd.Last()
t.Fatalf("err: %v\nAllocs: %d\nweb state: % #v", err, count, pretty.Formatter(last.TaskStates["web"]))
})
// Destroy and wait
ar2.Destroy()
start := time.Now()
testutil.WaitForResult(func() (bool, error) {
alloc := ar2.Alloc()
if alloc.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("Bad client status; got %v; want %v", alloc.ClientStatus, structs.AllocClientStatusComplete)
}
return true, nil
}, func(err error) {
_, last := upd.Last()
t.Fatalf("err: %v %#v %#v", err, last, last.TaskStates)
})
if time.Since(start) > time.Duration(testutil.TestMultiplier()*5)*time.Second {
t.Fatalf("took too long to terminate")
}
}
// Ensure pre-#2132 state files containing the Context struct are properly
// migrated to the new format.
//
// Old Context State:
//
// "Context": {
// "AllocDir": {
// "AllocDir": "/path/to/allocs/2a54fcff-fc44-8d4f-e025-53c48e9cbbbb",
// "SharedDir": "/path/to/allocs/2a54fcff-fc44-8d4f-e025-53c48e9cbbbb/alloc",
// "TaskDirs": {
// "echo1": "/path/to/allocs/2a54fcff-fc44-8d4f-e025-53c48e9cbbbb/echo1"
// }
// },
// "AllocID": "2a54fcff-fc44-8d4f-e025-53c48e9cbbbb"
// }
func TestAllocRunner_RestoreOldState(t *testing.T) {
t.Parallel()
alloc := mock.Alloc()
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"exit_code": "0",
"run_for": "10s",
}
logger := testLogger()
conf := config.DefaultConfig()
conf.Node = mock.Node()
conf.StateDir = os.TempDir()
conf.AllocDir = os.TempDir()
tmp, err := ioutil.TempFile("", "state-db")
if err != nil {
t.Fatalf("error creating state db file: %v", err)
}
db, err := bolt.Open(tmp.Name(), 0600, nil)
if err != nil {
t.Fatalf("error creating state db: %v", err)
}
if err := os.MkdirAll(filepath.Join(conf.StateDir, "alloc", alloc.ID), 0777); err != nil {
t.Fatalf("error creating state dir: %v", err)
}
statePath := filepath.Join(conf.StateDir, "alloc", alloc.ID, "state.json")
w, err := os.Create(statePath)
if err != nil {
t.Fatalf("error creating state file: %v", err)
}
tmplctx := &struct {
AllocID string
AllocDir string
}{alloc.ID, conf.AllocDir}
err = template.Must(template.New("test_state").Parse(`{
"Version": "0.5.1",
"Alloc": {
"ID": "{{ .AllocID }}",
"Name": "example",
"JobID": "example",
"Job": {
"ID": "example",
"Name": "example",
"Type": "batch",
"TaskGroups": [
{
"Name": "example",
"Tasks": [
{
"Name": "example",
"Driver": "mock",
"Config": {
"exit_code": "0",
"run_for": "10s"
}
}
]
}
]
},
"TaskGroup": "example",
"DesiredStatus": "run",
"ClientStatus": "running",
"TaskStates": {
"example": {
"State": "running",
"Failed": false,
"Events": []
}
}
},
"Context": {
"AllocDir": {
"AllocDir": "{{ .AllocDir }}/{{ .AllocID }}",
"SharedDir": "{{ .AllocDir }}/{{ .AllocID }}/alloc",
"TaskDirs": {
"example": "{{ .AllocDir }}/{{ .AllocID }}/example"
}
},
"AllocID": "{{ .AllocID }}"
}
}`)).Execute(w, tmplctx)
if err != nil {
t.Fatalf("error writing state file: %v", err)
}
w.Close()
upd := &MockAllocStateUpdater{}
*alloc.Job.LookupTaskGroup(alloc.TaskGroup).RestartPolicy = structs.RestartPolicy{Attempts: 0}
alloc.Job.Type = structs.JobTypeBatch
vclient := vaultclient.NewMockVaultClient()
cclient := newMockConsulServiceClient()
ar := NewAllocRunner(logger, conf, db, upd.Update, alloc, vclient, cclient)
defer ar.Destroy()
// RestoreState should fail on the task state since we only test the
// alloc state restoring.
err = ar.RestoreState()
if err == nil {
t.Fatal("expected error restoring Task state")
}
merr, ok := err.(*multierror.Error)
if !ok {
t.Fatalf("expected RestoreState to return a multierror but found: %T -> %v", err, err)
}
if len(merr.Errors) != 1 {
t.Fatalf("expected exactly 1 error from RestoreState but found: %d: %v", len(merr.Errors), err)
}
if expected := "failed to get task bucket"; !strings.Contains(merr.Errors[0].Error(), expected) {
t.Fatalf("expected %q but got: %q", expected, merr.Errors[0].Error())
}
if err := ar.SaveState(); err != nil {
t.Fatalf("error saving new state: %v", err)
}
}
func TestAllocRunner_TaskFailed_KillTG(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
// Create two tasks in the task group
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.KillTimeout = 10 * time.Millisecond
task.Config = map[string]interface{}{
"run_for": "10s",
}
task2 := ar.alloc.Job.TaskGroups[0].Tasks[0].Copy()
task2.Name = "task 2"
task2.Driver = "mock_driver"
task2.Config = map[string]interface{}{
"start_error": "fail task please",
}
ar.alloc.Job.TaskGroups[0].Tasks = append(ar.alloc.Job.TaskGroups[0].Tasks, task2)
ar.alloc.TaskResources[task2.Name] = task2.Resources
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusFailed {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusFailed)
}
// Task One should be killed
state1 := last.TaskStates[task.Name]
if state1.State != structs.TaskStateDead {
return false, fmt.Errorf("got state %v; want %v", state1.State, structs.TaskStateDead)
}
if len(state1.Events) < 2 {
// At least have a received and destroyed
return false, fmt.Errorf("Unexpected number of events")
}
found := false
for _, e := range state1.Events {
if e.Type != structs.TaskSiblingFailed {
found = true
}
}
if !found {
return false, fmt.Errorf("Did not find event %v", structs.TaskSiblingFailed)
}
// Task Two should be failed
state2 := last.TaskStates[task2.Name]
if state2.State != structs.TaskStateDead {
return false, fmt.Errorf("got state %v; want %v", state2.State, structs.TaskStateDead)
}
if !state2.Failed {
return false, fmt.Errorf("task2 should have failed")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
func TestAllocRunner_TaskLeader_KillTG(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
// Create two tasks in the task group
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.KillTimeout = 10 * time.Millisecond
task.Config = map[string]interface{}{
"run_for": "10s",
}
task2 := ar.alloc.Job.TaskGroups[0].Tasks[0].Copy()
task2.Name = "task 2"
task2.Driver = "mock_driver"
task2.Leader = true
task2.Config = map[string]interface{}{
"run_for": "1s",
}
ar.alloc.Job.TaskGroups[0].Tasks = append(ar.alloc.Job.TaskGroups[0].Tasks, task2)
ar.alloc.TaskResources[task2.Name] = task2.Resources
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
// Task One should be killed
state1 := last.TaskStates[task.Name]
if state1.State != structs.TaskStateDead {
return false, fmt.Errorf("got state %v; want %v", state1.State, structs.TaskStateDead)
}
if state1.FinishedAt.IsZero() || state1.StartedAt.IsZero() {
return false, fmt.Errorf("expected to have a start and finish time")
}
if len(state1.Events) < 2 {
// At least have a received and destroyed
return false, fmt.Errorf("Unexpected number of events")
}
found := false
for _, e := range state1.Events {
if e.Type != structs.TaskLeaderDead {
found = true
}
}
if !found {
return false, fmt.Errorf("Did not find event %v", structs.TaskLeaderDead)
}
// Task Two should be dead
state2 := last.TaskStates[task2.Name]
if state2.State != structs.TaskStateDead {
return false, fmt.Errorf("got state %v; want %v", state2.State, structs.TaskStateDead)
}
if state2.FinishedAt.IsZero() || state2.StartedAt.IsZero() {
return false, fmt.Errorf("expected to have a start and finish time")
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
}
// TestAllocRunner_TaskLeader_StopTG asserts that when stopping a task group
// with a leader the leader is stopped before other tasks.
func TestAllocRunner_TaskLeader_StopTG(t *testing.T) {
t.Parallel()
upd, ar := testAllocRunner(false)
// Create 3 tasks in the task group
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Name = "follower1"
task.Driver = "mock_driver"
task.KillTimeout = 10 * time.Millisecond
task.Config = map[string]interface{}{
"run_for": "10s",
}
task2 := ar.alloc.Job.TaskGroups[0].Tasks[0].Copy()
task2.Name = "leader"
task2.Driver = "mock_driver"
task2.Leader = true
task2.KillTimeout = 10 * time.Millisecond
task2.Config = map[string]interface{}{
"run_for": "10s",
}
task3 := ar.alloc.Job.TaskGroups[0].Tasks[0].Copy()
task3.Name = "follower2"
task3.Driver = "mock_driver"
task3.KillTimeout = 10 * time.Millisecond
task3.Config = map[string]interface{}{
"run_for": "10s",
}
ar.alloc.Job.TaskGroups[0].Tasks = append(ar.alloc.Job.TaskGroups[0].Tasks, task2, task3)
ar.alloc.TaskResources[task2.Name] = task2.Resources
defer ar.Destroy()
go ar.Run()
// Wait for tasks to start
oldCount, last := upd.Last()
testutil.WaitForResult(func() (bool, error) {
oldCount, last = upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if n := len(last.TaskStates); n != 3 {
return false, fmt.Errorf("Not enough task states (want: 3; found %d)", n)
}
for name, state := range last.TaskStates {
if state.State != structs.TaskStateRunning {
return false, fmt.Errorf("Task %q is not running yet (it's %q)", name, state.State)
}
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Stop alloc
update := ar.Alloc()
update.DesiredStatus = structs.AllocDesiredStatusStop
ar.Update(update)
// Wait for tasks to stop
testutil.WaitForResult(func() (bool, error) {
newCount, last := upd.Last()
if newCount == oldCount {
return false, fmt.Errorf("no new updates (count: %d)", newCount)
}
if last.TaskStates["leader"].FinishedAt.UnixNano() >= last.TaskStates["follower1"].FinishedAt.UnixNano() {
return false, fmt.Errorf("expected leader to finish before follower1: %s >= %s",
last.TaskStates["leader"].FinishedAt, last.TaskStates["follower1"].FinishedAt)
}
if last.TaskStates["leader"].FinishedAt.UnixNano() >= last.TaskStates["follower2"].FinishedAt.UnixNano() {
return false, fmt.Errorf("expected leader to finish before follower2: %s >= %s",
last.TaskStates["leader"].FinishedAt, last.TaskStates["follower2"].FinishedAt)
}
return true, nil
}, func(err error) {
count, last := upd.Last()
t.Logf("Updates: %d", count)
for name, state := range last.TaskStates {
t.Logf("%s: %s", name, state.State)
}
t.Fatalf("err: %v", err)
})
}
func TestAllocRunner_MoveAllocDir(t *testing.T) {
t.Parallel()
// Create an alloc runner
alloc := mock.Alloc()
task := alloc.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"run_for": "1s",
}
upd, ar := testAllocRunnerFromAlloc(alloc, false)
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Write some data in data dir and task dir of the alloc
dataFile := filepath.Join(ar.allocDir.SharedDir, "data", "data_file")
ioutil.WriteFile(dataFile, []byte("hello world"), os.ModePerm)
taskDir := ar.allocDir.TaskDirs[task.Name]
taskLocalFile := filepath.Join(taskDir.LocalDir, "local_file")
ioutil.WriteFile(taskLocalFile, []byte("good bye world"), os.ModePerm)
// Create another alloc runner
alloc1 := mock.Alloc()
task = alloc1.Job.TaskGroups[0].Tasks[0]
task.Driver = "mock_driver"
task.Config = map[string]interface{}{
"run_for": "1s",
}
upd1, ar1 := testAllocRunnerFromAlloc(alloc1, false)
ar1.SetPreviousAllocDir(ar.allocDir)
go ar1.Run()
defer ar1.Destroy()
testutil.WaitForResult(func() (bool, error) {
_, last := upd1.Last()
if last == nil {
return false, fmt.Errorf("No updates")
}
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v", err)
})
// Ensure that data from ar1 was moved to ar
taskDir = ar1.allocDir.TaskDirs[task.Name]
taskLocalFile = filepath.Join(taskDir.LocalDir, "local_file")
if fileInfo, _ := os.Stat(taskLocalFile); fileInfo == nil {
t.Fatalf("file %v not found", taskLocalFile)
}
dataFile = filepath.Join(ar1.allocDir.SharedDir, "data", "data_file")
if fileInfo, _ := os.Stat(dataFile); fileInfo == nil {
t.Fatalf("file %v not found", dataFile)
}
}