open-nomad/client/alloc_runner_test.go

591 lines
17 KiB
Go

package client
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"testing"
"time"
"github.com/hashicorp/nomad/nomad/mock"
"github.com/hashicorp/nomad/nomad/structs"
"github.com/hashicorp/nomad/testutil"
"github.com/hashicorp/nomad/client/config"
ctestutil "github.com/hashicorp/nomad/client/testutil"
"github.com/hashicorp/nomad/client/vaultclient"
)
type MockAllocStateUpdater struct {
Count int
Allocs []*structs.Allocation
}
func (m *MockAllocStateUpdater) Update(alloc *structs.Allocation) {
m.Count += 1
m.Allocs = append(m.Allocs, alloc)
}
func testAllocRunnerFromAlloc(alloc *structs.Allocation, restarts bool) (*MockAllocStateUpdater, *AllocRunner) {
logger := testLogger()
conf := config.DefaultConfig()
conf.StateDir = os.TempDir()
conf.AllocDir = os.TempDir()
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, upd.Update, alloc, vclient)
return upd, ar
}
func testAllocRunner(restarts bool) (*MockAllocStateUpdater, *AllocRunner) {
return testAllocRunnerFromAlloc(mock.Alloc(), restarts)
}
func TestAllocRunner_SimpleRun(t *testing.T) {
ctestutil.ExecCompatible(t)
upd, ar := testAllocRunner(false)
go ar.Run()
defer ar.Destroy()
testutil.WaitForResult(func() (bool, error) {
if upd.Count == 0 {
return false, fmt.Errorf("No updates")
}
last := upd.Allocs[upd.Count-1]
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)
})
}
// 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) {
ctestutil.ExecCompatible(t)
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://127.1.1.111:12315/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) {
if upd.Count < 6 {
return false, fmt.Errorf("Not enough updates")
}
last := upd.Allocs[upd.Count-1]
// 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) {
ctestutil.ExecCompatible(t)
upd, ar := testAllocRunner(false)
// Ensure task takes some time
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Config["command"] = "/bin/sleep"
task.Config["args"] = []string{"10"}
go ar.Run()
testutil.WaitForResult(func() (bool, error) {
if upd.Count == 0 {
return false, fmt.Errorf("No updates")
}
last := upd.Allocs[upd.Count-1]
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) {
if upd.Count == 0 {
return false, nil
}
// Check the status has changed.
last := upd.Allocs[upd.Count-1]
if last.ClientStatus != structs.AllocClientStatusComplete {
return false, fmt.Errorf("got client status %v; want %v", last.ClientStatus, structs.AllocClientStatusComplete)
}
// Check the state still exists
if _, err := os.Stat(ar.stateFilePath()); err != nil {
return false, fmt.Errorf("state file destroyed: %v", err)
}
// Check the alloc directory still exists
if _, err := os.Stat(ar.ctx.AllocDir.AllocDir); err != nil {
return false, fmt.Errorf("alloc dir destroyed: %v", ar.ctx.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) {
if upd.Count == 0 {
return false, nil
}
// Check the status has changed.
last := upd.Allocs[upd.Count-1]
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 := os.Stat(ar.stateFilePath()); err == nil {
return false, fmt.Errorf("state file still exists: %v", ar.stateFilePath())
} else if !os.IsNotExist(err) {
return false, fmt.Errorf("stat err: %v", err)
}
// Check the alloc directory was cleaned
if _, err := os.Stat(ar.ctx.AllocDir.AllocDir); err == nil {
return false, fmt.Errorf("alloc dir still exists: %v", ar.ctx.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) {
ctestutil.ExecCompatible(t)
upd, ar := testAllocRunner(false)
// Ensure task takes some time
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Config["command"] = "/bin/sleep"
task.Config["args"] = []string{"10"}
go ar.Run()
start := time.Now()
// Begin the tear down
go func() {
time.Sleep(1 * time.Second)
ar.Destroy()
}()
testutil.WaitForResult(func() (bool, error) {
if upd.Count == 0 {
return false, nil
}
// Check the status has changed.
last := upd.Allocs[upd.Count-1]
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 := os.Stat(ar.stateFilePath()); err == nil {
return false, fmt.Errorf("state file still exists: %v", ar.stateFilePath())
} else if !os.IsNotExist(err) {
return false, fmt.Errorf("stat err: %v", err)
}
// Check the alloc directory was cleaned
if _, err := os.Stat(ar.ctx.AllocDir.AllocDir); err == nil {
return false, fmt.Errorf("alloc dir still exists: %v", ar.ctx.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) {
ctestutil.ExecCompatible(t)
_, ar := testAllocRunner(false)
// Ensure task takes some time
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Config["command"] = "/bin/sleep"
task.Config["args"] = []string{"10"}
go ar.Run()
defer ar.Destroy()
// Update the alloc definition
newAlloc := new(structs.Allocation)
*newAlloc = *ar.alloc
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) {
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()
// Snapshot state
testutil.WaitForResult(func() (bool, error) {
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
ar2 := NewAllocRunner(ar.logger, ar.config, upd.Update,
&structs.Allocation{ID: ar.alloc.ID}, ar.vaultClient)
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")
}
if upd.Count == 0 {
return false, nil
}
last := upd.Allocs[upd.Count-1]
return last.ClientStatus == structs.AllocClientStatusRunning, nil
}, func(err error) {
t.Fatalf("err: %v %#v %#v", err, upd.Allocs[0], ar.alloc.TaskStates)
})
// 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) {
t.Fatalf("err: %v %#v %#v", err, upd.Allocs[0], ar.alloc.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) {
ctestutil.ExecCompatible(t)
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()
testutil.WaitForResult(func() (bool, error) {
if upd.Count == 0 {
return false, fmt.Errorf("No updates")
}
last := upd.Allocs[upd.Count-1]
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 both alloc runners don't destroy
ar.destroy = true
// Create a new alloc runner
ar2 := NewAllocRunner(ar.logger, ar.config, upd.Update,
&structs.Allocation{ID: ar.alloc.ID}, ar.vaultClient)
ar2.logger = prefixedTestLogger("ar2: ")
err = ar2.RestoreState()
if err != nil {
t.Fatalf("err: %v", err)
}
go ar2.Run()
ar2.logger.Println("[TESTING] starting second alloc runner")
testutil.WaitForResult(func() (bool, error) {
// Check the state still exists
if _, err := os.Stat(ar.stateFilePath()); err != nil {
return false, fmt.Errorf("state file destroyed: %v", err)
}
// Check the alloc directory still exists
if _, err := os.Stat(ar.ctx.AllocDir.AllocDir); err != nil {
return false, fmt.Errorf("alloc dir destroyed: %v", ar.ctx.AllocDir.AllocDir)
}
return true, nil
}, func(err error) {
t.Fatalf("err: %v %#v %#v", err, upd.Allocs[0], ar.alloc.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) {
if upd.Count == 0 {
return false, nil
}
// Check the status has changed.
last := upd.Allocs[upd.Count-1]
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 := os.Stat(ar.stateFilePath()); err == nil {
return false, fmt.Errorf("state file still exists: %v", ar.stateFilePath())
} else if !os.IsNotExist(err) {
return false, fmt.Errorf("stat err: %v", err)
}
// Check the alloc directory was cleaned
if _, err := os.Stat(ar.ctx.AllocDir.AllocDir); err == nil {
return false, fmt.Errorf("alloc dir still exists: %v", ar.ctx.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_TaskFailed_KillTG(t *testing.T) {
ctestutil.ExecCompatible(t)
upd, ar := testAllocRunner(false)
// Create two tasks in the task group
task := ar.alloc.Job.TaskGroups[0].Tasks[0]
task.Config["command"] = "/bin/sleep"
task.Config["args"] = []string{"1000"}
task2 := ar.alloc.Job.TaskGroups[0].Tasks[0].Copy()
task2.Name = "task 2"
task2.Config = map[string]interface{}{"command": "invalidBinaryToFail"}
ar.alloc.Job.TaskGroups[0].Tasks = append(ar.alloc.Job.TaskGroups[0].Tasks, task2)
ar.alloc.TaskResources[task2.Name] = task2.Resources
//t.Logf("%#v", ar.alloc.Job.TaskGroups[0])
go ar.Run()
testutil.WaitForResult(func() (bool, error) {
if upd.Count == 0 {
return false, fmt.Errorf("No updates")
}
last := upd.Allocs[upd.Count-1]
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) < 3 {
return false, fmt.Errorf("Unexpected number of events")
}
if lastE := state1.Events[len(state1.Events)-3]; lastE.Type != structs.TaskSiblingFailed {
return false, fmt.Errorf("got last event %v; want %v", lastE.Type, 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_MoveAllocDir(t *testing.T) {
// 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()
testutil.WaitForResult(func() (bool, error) {
if upd.Count == 0 {
return false, fmt.Errorf("No updates")
}
last := upd.Allocs[upd.Count-1]
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.ctx.AllocDir.SharedDir, "data", "data_file")
ioutil.WriteFile(dataFile, []byte("hello world"), os.ModePerm)
taskDir := ar.ctx.AllocDir.TaskDirs[task.Name]
taskLocalFile := filepath.Join(taskDir, "local", "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.ctx.AllocDir)
go ar1.Run()
testutil.WaitForResult(func() (bool, error) {
if upd1.Count == 0 {
return false, fmt.Errorf("No updates")
}
last := upd1.Allocs[upd1.Count-1]
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.ctx.AllocDir.TaskDirs[task.Name]
taskLocalFile = filepath.Join(taskDir, "local", "local_file")
if fileInfo, _ := os.Stat(taskLocalFile); fileInfo == nil {
t.Fatalf("file %v not found", taskLocalFile)
}
dataFile = filepath.Join(ar1.ctx.AllocDir.SharedDir, "data", "data_file")
if fileInfo, _ := os.Stat(dataFile); fileInfo == nil {
t.Fatalf("file %v not found", dataFile)
}
}