a8b21da538
This allows clients an easier way to interact with the fifos for a container without having to use the built in copyIO functions when opening fifos. It's nothing that clients could not have already coded but since we use this type of functionality in the tests it makes sense to add an implementation here. Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
383 lines
7.3 KiB
Go
383 lines
7.3 KiB
Go
// +build linux
|
|
|
|
package containerd
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"runtime"
|
|
"sync"
|
|
"syscall"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/containerd/cgroups"
|
|
"github.com/containerd/containerd/linux/runcopts"
|
|
specs "github.com/opencontainers/runtime-spec/specs-go"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func TestContainerUpdate(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
client, err := newClient(t, address)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer client.Close()
|
|
|
|
var (
|
|
ctx, cancel = testContext()
|
|
id = t.Name()
|
|
)
|
|
defer cancel()
|
|
|
|
image, err := client.GetImage(ctx, testImage)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
spec, err := generateSpec(WithImageConfig(ctx, image), withProcessArgs("sleep", "30"))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
limit := int64(32 * 1024 * 1024)
|
|
spec.Linux.Resources.Memory = &specs.LinuxMemory{
|
|
Limit: &limit,
|
|
}
|
|
container, err := client.NewContainer(ctx, id, WithSpec(spec), WithNewSnapshot(id, image))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer container.Delete(ctx, WithSnapshotCleanup)
|
|
|
|
task, err := container.NewTask(ctx, empty())
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer task.Delete(ctx)
|
|
|
|
statusC, err := task.Wait(ctx)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
// check that the task has a limit of 32mb
|
|
cgroup, err := cgroups.Load(cgroups.V1, cgroups.PidPath(int(task.Pid())))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
stat, err := cgroup.Stat(cgroups.IgnoreNotExist)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
if int64(stat.Memory.Usage.Limit) != limit {
|
|
t.Errorf("expected memory limit to be set to %d but received %d", limit, stat.Memory.Usage.Limit)
|
|
return
|
|
}
|
|
limit = 64 * 1024 * 1024
|
|
if err := task.Update(ctx, WithResources(&specs.LinuxResources{
|
|
Memory: &specs.LinuxMemory{
|
|
Limit: &limit,
|
|
},
|
|
})); err != nil {
|
|
t.Error(err)
|
|
}
|
|
// check that the task has a limit of 64mb
|
|
if stat, err = cgroup.Stat(cgroups.IgnoreNotExist); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
if int64(stat.Memory.Usage.Limit) != limit {
|
|
t.Errorf("expected memory limit to be set to %d but received %d", limit, stat.Memory.Usage.Limit)
|
|
}
|
|
if err := task.Kill(ctx, unix.SIGKILL); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
<-statusC
|
|
}
|
|
|
|
func TestShimInCgroup(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
client, err := newClient(t, address)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer client.Close()
|
|
|
|
var (
|
|
ctx, cancel = testContext()
|
|
id = t.Name()
|
|
)
|
|
defer cancel()
|
|
|
|
image, err := client.GetImage(ctx, testImage)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
spec, err := GenerateSpec(WithImageConfig(ctx, image), WithProcessArgs("sleep", "30"))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
container, err := client.NewContainer(ctx, id, WithSpec(spec), WithNewSnapshot(id, image))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer container.Delete(ctx, WithSnapshotCleanup)
|
|
// create a cgroup for the shim to use
|
|
path := "/containerd/shim"
|
|
cg, err := cgroups.New(cgroups.V1, cgroups.StaticPath(path), &specs.LinuxResources{})
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer cg.Delete()
|
|
|
|
task, err := container.NewTask(ctx, empty(), func(_ context.Context, client *Client, r *TaskInfo) error {
|
|
r.Options = &runcopts.CreateOptions{
|
|
ShimCgroup: path,
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer task.Delete(ctx)
|
|
|
|
statusC, err := task.Wait(ctx)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
// check to see if the shim is inside the cgroup
|
|
processes, err := cg.Processes(cgroups.Devices, false)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
if len(processes) == 0 {
|
|
t.Errorf("created cgroup should have atleast one process inside: %d", len(processes))
|
|
}
|
|
if err := task.Kill(ctx, unix.SIGKILL); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
<-statusC
|
|
}
|
|
|
|
func TestDaemonRestart(t *testing.T) {
|
|
client, err := newClient(t, address)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer client.Close()
|
|
|
|
var (
|
|
image Image
|
|
ctx, cancel = testContext()
|
|
id = t.Name()
|
|
)
|
|
defer cancel()
|
|
|
|
image, err = client.GetImage(ctx, testImage)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
spec, err := generateSpec(withImageConfig(ctx, image), withProcessArgs("sleep", "30"))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
container, err := client.NewContainer(ctx, id, WithSpec(spec), withNewSnapshot(id, image))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer container.Delete(ctx, WithSnapshotCleanup)
|
|
|
|
task, err := container.NewTask(ctx, Stdio)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer task.Delete(ctx)
|
|
|
|
statusC, err := task.Wait(ctx)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
if err := task.Start(ctx); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
if err := ctrd.Restart(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
status := <-statusC
|
|
_, _, err = status.Result()
|
|
if err == nil {
|
|
t.Errorf(`first task.Wait() should have failed with "transport is closing"`)
|
|
}
|
|
|
|
waitCtx, waitCancel := context.WithTimeout(ctx, 2*time.Second)
|
|
serving, err := client.IsServing(waitCtx)
|
|
waitCancel()
|
|
if !serving {
|
|
t.Fatalf("containerd did not start within 2s: %v", err)
|
|
}
|
|
|
|
statusC, err = task.Wait(ctx)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
if err := task.Kill(ctx, syscall.SIGKILL); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
<-statusC
|
|
}
|
|
|
|
func TestContainerAttach(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
if runtime.GOOS == "windows" {
|
|
// On windows, closing the write side of the pipe closes the read
|
|
// side, sending an EOF to it and preventing reopening it.
|
|
// Hence this test will always fails on windows
|
|
t.Skip("invalid logic on windows")
|
|
}
|
|
|
|
client, err := newClient(t, address)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer client.Close()
|
|
|
|
var (
|
|
image Image
|
|
ctx, cancel = testContext()
|
|
id = t.Name()
|
|
)
|
|
defer cancel()
|
|
|
|
if runtime.GOOS != "windows" {
|
|
image, err = client.GetImage(ctx, testImage)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
}
|
|
|
|
spec, err := generateSpec(withImageConfig(ctx, image), withCat())
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
container, err := client.NewContainer(ctx, id, WithSpec(spec), withNewSnapshot(id, image))
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer container.Delete(ctx, WithSnapshotCleanup)
|
|
|
|
expected := "hello" + newLine
|
|
|
|
direct, err := NewDirectIO(ctx, false)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer direct.Delete()
|
|
var (
|
|
wg sync.WaitGroup
|
|
buf = bytes.NewBuffer(nil)
|
|
)
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
io.Copy(buf, direct.Stdout)
|
|
}()
|
|
|
|
task, err := container.NewTask(ctx, direct.IOCreate)
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
defer task.Delete(ctx)
|
|
|
|
status, err := task.Wait(ctx)
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
if err := task.Start(ctx); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
if _, err := fmt.Fprint(direct.Stdin, expected); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
// load the container and re-load the task
|
|
if container, err = client.LoadContainer(ctx, id); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
if task, err = container.Task(ctx, direct.IOAttach); err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
|
|
if _, err := fmt.Fprint(direct.Stdin, expected); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
direct.Stdin.Close()
|
|
|
|
if err := task.CloseIO(ctx, WithStdinCloser); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
<-status
|
|
|
|
wg.Wait()
|
|
if _, err := task.Delete(ctx); err != nil {
|
|
t.Error(err)
|
|
}
|
|
|
|
output := buf.String()
|
|
|
|
// we wrote the same thing after attach
|
|
expected = expected + expected
|
|
if output != expected {
|
|
t.Errorf("expected output %q but received %q", expected, output)
|
|
}
|
|
}
|