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container_test.go
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container_test.go
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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package containerd
import (
"bytes"
"context"
"io"
"io/ioutil"
"os"
"os/exec"
"path"
"runtime"
"strings"
"syscall"
"testing"
"time"
// Register the typeurl
"github.com/containerd/containerd/cio"
"github.com/containerd/containerd/containers"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/oci"
"github.com/containerd/containerd/platforms"
"github.com/containerd/containerd/plugin"
_ "github.com/containerd/containerd/runtime"
"github.com/containerd/containerd/runtime/v2/runc/options"
"github.com/containerd/typeurl"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/containerd/containerd/errdefs"
"github.com/containerd/go-runc"
gogotypes "github.com/gogo/protobuf/types"
)
func empty() cio.Creator {
// TODO (@mlaventure) windows searches for pipes
// when none are provided
if runtime.GOOS == "windows" {
return cio.NewCreator(cio.WithStdio)
}
return cio.NullIO
}
func TestContainerList(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
containers, err := client.Containers(ctx)
if err != nil {
t.Fatalf("container list returned error %v", err)
}
if len(containers) != 0 {
t.Errorf("expected 0 containers but received %d", len(containers))
}
}
func TestNewContainer(t *testing.T) {
t.Parallel()
id := t.Name()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
container, err := client.NewContainer(ctx, id, WithNewSpec())
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx)
if container.ID() != id {
t.Errorf("expected container id %q but received %q", id, container.ID())
}
if _, err = container.Spec(ctx); err != nil {
t.Fatal(err)
}
if err := container.Delete(ctx); err != nil {
t.Fatal(err)
}
}
func TestContainerStart(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), withExitStatus(7)))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if runtime.GOOS != "windows" {
// task.Pid not implemented on Windows
if pid := task.Pid(); pid < 1 {
t.Errorf("invalid task pid %d", pid)
}
}
if err := task.Start(ctx); err != nil {
t.Error(err)
task.Delete(ctx)
return
}
status := <-statusC
code, _, err := status.Result()
if err != nil {
t.Fatal(err)
}
if code != 7 {
t.Errorf("expected status 7 from wait but received %d", code)
}
deleteStatus, err := task.Delete(ctx)
if err != nil {
t.Fatal(err)
}
if ec := deleteStatus.ExitCode(); ec != 7 {
t.Errorf("expected status 7 from delete but received %d", ec)
}
}
func TestContainerOutput(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
expected = "kingkoye"
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), withProcessArgs("echo", expected)))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
stdout := bytes.NewBuffer(nil)
task, err := container.NewTask(ctx, cio.NewCreator(withByteBuffers(stdout)))
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
status := <-statusC
code, _, err := status.Result()
if code != 0 {
t.Errorf("expected status 0 but received %d: %v", code, err)
}
if _, err := task.Delete(ctx); err != nil {
t.Fatal(err)
}
actual := stdout.String()
// echo adds a new line
expected = expected + newLine
if actual != expected {
t.Errorf("expected output %q but received %q", expected, actual)
}
}
func withByteBuffers(stdout io.Writer) cio.Opt {
// TODO: could this use ioutil.Discard?
return func(streams *cio.Streams) {
streams.Stdin = new(bytes.Buffer)
streams.Stdout = stdout
streams.Stderr = new(bytes.Buffer)
}
}
func TestContainerExec(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
finishedC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
spec, err := container.Spec(ctx)
if err != nil {
t.Fatal(err)
}
// start an exec process without running the original container process info
processSpec := spec.Process
withExecExitStatus(processSpec, 6)
execID := t.Name() + "_exec"
process, err := task.Exec(ctx, execID, processSpec, empty())
if err != nil {
t.Fatal(err)
}
processStatusC, err := process.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := process.Start(ctx); err != nil {
t.Fatal(err)
}
// wait for the exec to return
status := <-processStatusC
code, _, err := status.Result()
if err != nil {
t.Fatal(err)
}
if code != 6 {
t.Errorf("expected exec exit code 6 but received %d", code)
}
deleteStatus, err := process.Delete(ctx)
if err != nil {
t.Fatal(err)
}
if ec := deleteStatus.ExitCode(); ec != 6 {
t.Errorf("expected delete exit code 6 but received %d", ec)
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
t.Error(err)
}
<-finishedC
}
func TestContainerLargeExecArgs(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
finishedC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
spec, err := container.Spec(ctx)
if err != nil {
t.Fatal(err)
}
processSpec := spec.Process
withExecArgs(processSpec, "echo", strings.Repeat("a", 20000))
execID := t.Name() + "_exec"
process, err := task.Exec(ctx, execID, processSpec, empty())
if err != nil {
t.Fatal(err)
}
processStatusC, err := process.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := process.Start(ctx); err != nil {
t.Fatal(err)
}
// wait for the exec to return
status := <-processStatusC
if _, _, err := status.Result(); err != nil {
t.Fatal(err)
}
if _, err := process.Delete(ctx); err != nil {
t.Fatal(err)
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
t.Error(err)
}
<-finishedC
}
func TestContainerPids(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
pid := task.Pid()
if pid < 1 {
t.Errorf("invalid task pid %d", pid)
}
processes, err := task.Pids(ctx)
switch runtime.GOOS {
case "windows":
// TODO: This is currently not implemented on windows
default:
if err != nil {
t.Fatal(err)
}
// 2 processes, 1 for sh and one for sleep
if l := len(processes); l != 2 {
t.Errorf("expected 2 process but received %d", l)
}
if len(processes) > 0 {
actual := processes[0].Pid
if pid != actual {
t.Errorf("expected pid %d but received %d", pid, actual)
}
}
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
select {
case s := <-statusC:
t.Log(s.Result())
default:
}
t.Error(err)
}
<-statusC
}
func TestContainerCloseIO(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), withCat()))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
stdout := bytes.NewBuffer(nil)
r, w, err := os.Pipe()
if err != nil {
t.Fatal(err)
}
task, err := container.NewTask(ctx, cio.NewCreator(cio.WithStreams(r, stdout, ioutil.Discard)))
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
w.Close()
if err := task.CloseIO(ctx, WithStdinCloser); err != nil {
t.Error(err)
}
<-statusC
}
func TestDeleteRunningContainer(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
err = container.Delete(ctx, WithSnapshotCleanup)
if err == nil {
t.Error("delete did not error with running task")
}
if !errdefs.IsFailedPrecondition(err) {
t.Errorf("expected error %q but received %q", errdefs.ErrFailedPrecondition, err)
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
t.Fatal(err)
}
<-statusC
}
func TestContainerKill(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
t.Fatal(err)
}
<-statusC
err = task.Kill(ctx, syscall.SIGTERM)
if err == nil {
t.Fatal("second call to kill should return an error")
}
if !errdefs.IsNotFound(err) {
t.Errorf("expected error %q but received %q", errdefs.ErrNotFound, err)
}
}
func TestKillContainerDeletedByRunc(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
t.Skip("Test relies on runc and is not supported on Windows")
}
// We skip this case when runtime is crun.
// More information in https://github.com/containerd/containerd/pull/4214#discussion_r422769497
if os.Getenv("RUNC_FLAVOR") == "crun" {
t.Skip("skip it when using crun")
}
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
if client.runtime == plugin.RuntimeLinuxV1 {
t.Skip("test relies on runtime v2")
}
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
runcRoot = "/tmp/runc-test"
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id,
WithNewSnapshot(id, image),
WithNewSpec(oci.WithImageConfig(image), longCommand),
WithRuntime(client.runtime, &options.Options{Root: runcRoot}))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
rcmd := &runc.Runc{
Root: path.Join(runcRoot, testNamespace),
}
if err := rcmd.Delete(ctx, id, &runc.DeleteOpts{Force: true}); err != nil {
t.Fatal(err)
}
err = task.Kill(ctx, syscall.SIGKILL)
if err == nil {
t.Fatal("kill should return NotFound error")
} else if !errdefs.IsNotFound(err) {
t.Errorf("expected error %q but received %q", errdefs.ErrNotFound, err)
}
select {
case <-statusC:
case <-time.After(2 * time.Second):
t.Errorf("unexpected timeout when try to get exited container's status")
}
}
func TestContainerNoBinaryExists(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id,
WithNewSnapshot(id, image),
WithNewSpec(oci.WithImageConfig(image), oci.WithProcessArgs("nothing")))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
switch runtime.GOOS {
case "windows":
if err != nil {
t.Fatalf("failed to create task %v", err)
}
defer task.Delete(ctx, WithProcessKill)
if err := task.Start(ctx); err == nil {
t.Error("task.Start() should return an error when binary does not exist")
}
default:
if err == nil {
t.Error("NewTask should return an error when binary does not exist")
task.Delete(ctx)
}
}
}
func TestContainerExecNoBinaryExists(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
finishedC, err := task.Wait(ctx)
if err != nil {
t.Error(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
spec, err := container.Spec(ctx)
if err != nil {
t.Fatal(err)
}
// start an exec process without running the original container process
processSpec := spec.Process
processSpec.Args = []string{
"none",
}
execID := t.Name() + "_exec"
process, err := task.Exec(ctx, execID, processSpec, empty())
if err != nil {
t.Fatal(err)
}
defer process.Delete(ctx)
if err := process.Start(ctx); err == nil {
t.Error("Process.Start should fail when process does not exist")
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
t.Error(err)
}
<-finishedC
}
func TestWaitStoppedTask(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), withExitStatus(7)))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
statusC, err := task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if runtime.GOOS != "windows" {
// Getting the pid is not currently implemented on windows
if pid := task.Pid(); pid < 1 {
t.Errorf("invalid task pid %d", pid)
}
}
if err := task.Start(ctx); err != nil {
t.Error(err)
task.Delete(ctx)
return
}
// wait for the task to stop then call wait again
<-statusC
statusC, err = task.Wait(ctx)
if err != nil {
t.Fatal(err)
}
status := <-statusC
code, _, err := status.Result()
if err != nil {
t.Fatal(err)
}
if code != 7 {
t.Errorf("exit status from stopped task should be 7 but received %d", code)
}
}
func TestWaitStoppedProcess(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
var (
image Image
ctx, cancel = testContext(t)
id = t.Name()
)
defer cancel()
image, err = client.GetImage(ctx, testImage)
if err != nil {
t.Fatal(err)
}
container, err := client.NewContainer(ctx, id, WithNewSnapshot(id, image), WithNewSpec(oci.WithImageConfig(image), longCommand))
if err != nil {
t.Fatal(err)
}
defer container.Delete(ctx, WithSnapshotCleanup)
task, err := container.NewTask(ctx, empty())
if err != nil {
t.Fatal(err)
}
defer task.Delete(ctx)
finishedC, err := task.Wait(ctx)
if err != nil {
t.Error(err)
}
if err := task.Start(ctx); err != nil {
t.Fatal(err)
}
spec, err := container.Spec(ctx)
if err != nil {
t.Fatal(err)
}
// start an exec process without running the original container process info
processSpec := spec.Process
withExecExitStatus(processSpec, 6)
execID := t.Name() + "_exec"
process, err := task.Exec(ctx, execID, processSpec, empty())
if err != nil {
t.Fatal(err)
}
defer process.Delete(ctx)
statusC, err := process.Wait(ctx)
if err != nil {
t.Fatal(err)
}
if err := process.Start(ctx); err != nil {
t.Fatal(err)
}
// wait for the exec to return
<-statusC
// try to wait on the process after it has stopped
statusC, err = process.Wait(ctx)
if err != nil {
t.Fatal(err)
}
status := <-statusC
code, _, err := status.Result()
if err != nil {
t.Fatal(err)
}
if code != 6 {
t.Errorf("exit status from stopped process should be 6 but received %d", code)
}
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
t.Error(err)
}
<-finishedC
}
func TestTaskForceDelete(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()