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client_test.go
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client_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"
"flag"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"testing"
"time"
"github.com/containerd/containerd/defaults"
"github.com/containerd/containerd/images"
"github.com/containerd/containerd/log"
"github.com/containerd/containerd/log/logtest"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/pkg/testutil"
"github.com/containerd/containerd/platforms"
"github.com/containerd/containerd/sys"
"github.com/sirupsen/logrus"
)
var (
address string
noDaemon bool
noCriu bool
supportsCriu bool
testNamespace = "testing"
ctrdStdioFilePath string
ctrd = &daemon{}
)
func init() {
flag.StringVar(&address, "address", defaultAddress, "The address to the containerd socket for use in the tests")
flag.BoolVar(&noDaemon, "no-daemon", false, "Do not start a dedicated daemon for the tests")
flag.BoolVar(&noCriu, "no-criu", false, "Do not run the checkpoint tests")
}
func testContext(t testing.TB) (context.Context, context.CancelFunc) {
ctx, cancel := context.WithCancel(context.Background())
ctx = namespaces.WithNamespace(ctx, testNamespace)
if t != nil {
ctx = logtest.WithT(ctx, t)
}
return ctx, cancel
}
func TestMain(m *testing.M) {
flag.Parse()
if testing.Short() {
os.Exit(m.Run())
}
testutil.RequiresRootM()
// check if criu is installed on the system
_, err := exec.LookPath("criu")
supportsCriu = err == nil && !noCriu
var (
buf = bytes.NewBuffer(nil)
ctx, cancel = testContext(nil)
)
defer cancel()
if !noDaemon {
sys.ForceRemoveAll(defaultRoot)
stdioFile, err := ioutil.TempFile("", "")
if err != nil {
fmt.Fprintf(os.Stderr, "could not create a new stdio temp file: %s\n", err)
os.Exit(1)
}
defer func() {
stdioFile.Close()
os.Remove(stdioFile.Name())
}()
ctrdStdioFilePath = stdioFile.Name()
stdioWriter := io.MultiWriter(stdioFile, buf)
err = ctrd.start("containerd", address, []string{
"--root", defaultRoot,
"--state", defaultState,
"--log-level", "debug",
"--config", createShimDebugConfig(),
}, stdioWriter, stdioWriter)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %s\n", err, buf.String())
os.Exit(1)
}
}
waitCtx, waitCancel := context.WithTimeout(ctx, 2*time.Second)
client, err := ctrd.waitForStart(waitCtx)
waitCancel()
if err != nil {
ctrd.Kill()
ctrd.Wait()
fmt.Fprintf(os.Stderr, "%s: %s\n", err, buf.String())
os.Exit(1)
}
// print out the version in information
version, err := client.Version(ctx)
if err != nil {
fmt.Fprintf(os.Stderr, "error getting version: %s\n", err)
os.Exit(1)
}
// allow comparison with containerd under test
log.G(ctx).WithFields(logrus.Fields{
"version": version.Version,
"revision": version.Revision,
"runtime": os.Getenv("TEST_RUNTIME"),
}).Info("running tests against containerd")
// pull a seed image
log.G(ctx).Info("start to pull seed image")
if _, err = client.Pull(ctx, testImage, WithPullUnpack); err != nil {
fmt.Fprintf(os.Stderr, "%s: %s\n", err, buf.String())
ctrd.Kill()
ctrd.Wait()
os.Exit(1)
}
if err := client.Close(); err != nil {
fmt.Fprintln(os.Stderr, "failed to close client", err)
}
// run the test
status := m.Run()
if !noDaemon {
// tear down the daemon and resources created
if err := ctrd.Stop(); err != nil {
if err := ctrd.Kill(); err != nil {
fmt.Fprintln(os.Stderr, "failed to signal containerd", err)
}
}
if err := ctrd.Wait(); err != nil {
if _, ok := err.(*exec.ExitError); !ok {
fmt.Fprintln(os.Stderr, "failed to wait for containerd", err)
}
}
if err := sys.ForceRemoveAll(defaultRoot); err != nil {
fmt.Fprintln(os.Stderr, "failed to remove test root dir", err)
os.Exit(1)
}
// only print containerd logs if the test failed
if status != 0 {
fmt.Fprintln(os.Stderr, buf.String())
}
}
os.Exit(status)
}
func newClient(t testing.TB, address string, opts ...ClientOpt) (*Client, error) {
if testing.Short() {
t.Skip()
}
if rt := os.Getenv("TEST_RUNTIME"); rt != "" {
opts = append(opts, WithDefaultRuntime(rt))
}
// testutil.RequiresRoot(t) is not needed here (already called in TestMain)
return New(address, opts...)
}
func TestNewClient(t *testing.T) {
t.Parallel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
if client == nil {
t.Fatal("New() returned nil client")
}
if err := client.Close(); err != nil {
t.Errorf("client closed returned error %v", err)
}
}
// All the container's tests depends on this, we need it to run first.
func TestImagePull(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
_, err = client.Pull(ctx, testImage, WithPlatformMatcher(platforms.Default()))
if err != nil {
t.Fatal(err)
}
}
func TestImagePullAllPlatforms(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
cs := client.ContentStore()
img, err := client.Fetch(ctx, "docker.io/library/busybox:latest")
if err != nil {
t.Fatal(err)
}
index := img.Target
manifests, err := images.Children(ctx, cs, index)
if err != nil {
t.Fatal(err)
}
for _, manifest := range manifests {
children, err := images.Children(ctx, cs, manifest)
if err != nil {
t.Fatal("Th")
}
// check if childless data type has blob in content store
for _, desc := range children {
ra, err := cs.ReaderAt(ctx, desc)
if err != nil {
t.Fatal(err)
}
ra.Close()
}
}
}
func TestImagePullSomePlatforms(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
cs := client.ContentStore()
platformList := []string{"linux/amd64", "linux/arm64/v8", "linux/s390x"}
m := make(map[string]platforms.Matcher)
var opts []RemoteOpt
for _, platform := range platformList {
p, err := platforms.Parse(platform)
if err != nil {
t.Fatal(err)
}
m[platform] = platforms.NewMatcher(p)
opts = append(opts, WithPlatform(platform))
}
img, err := client.Fetch(ctx, "k8s.gcr.io/pause:3.1", opts...)
if err != nil {
t.Fatal(err)
}
index := img.Target
manifests, err := images.Children(ctx, cs, index)
if err != nil {
t.Fatal(err)
}
count := 0
for _, manifest := range manifests {
children, err := images.Children(ctx, cs, manifest)
found := false
for _, matcher := range m {
if manifest.Platform == nil {
t.Fatal("manifest should have proper platform")
}
if matcher.Match(*manifest.Platform) {
count++
found = true
}
}
if found {
if len(children) == 0 {
t.Fatal("manifest should have pulled children content")
}
// check if childless data type has blob in content store
for _, desc := range children {
ra, err := cs.ReaderAt(ctx, desc)
if err != nil {
t.Fatal(err)
}
ra.Close()
}
} else if err == nil {
t.Fatal("manifest should not have pulled children content")
}
}
if count != len(platformList) {
t.Fatal("expected a different number of pulled manifests")
}
}
func TestImagePullSchema1(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
schema1TestImage := "gcr.io/google_containers/pause:3.0@sha256:0d093c962a6c2dd8bb8727b661e2b5f13e9df884af9945b4cc7088d9350cd3ee"
_, err = client.Pull(ctx, schema1TestImage, WithPlatform(platforms.DefaultString()), WithSchema1Conversion)
if err != nil {
t.Fatal(err)
}
}
func TestImagePullWithConcurrencyLimit(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
_, err = client.Pull(ctx, testImage,
WithPlatformMatcher(platforms.Default()),
WithMaxConcurrentDownloads(2))
if err != nil {
t.Fatal(err)
}
}
func TestClientReconnect(t *testing.T) {
t.Parallel()
ctx, cancel := testContext(t)
defer cancel()
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
if client == nil {
t.Fatal("New() returned nil client")
}
ok, err := client.IsServing(ctx)
if err != nil {
t.Fatal(err)
}
if !ok {
t.Fatal("containerd is not serving")
}
if err := client.Reconnect(); err != nil {
t.Fatal(err)
}
if ok, err = client.IsServing(ctx); err != nil {
t.Fatal(err)
}
if !ok {
t.Fatal("containerd is not serving")
}
if err := client.Close(); err != nil {
t.Errorf("client closed returned error %v", err)
}
}
func createShimDebugConfig() string {
f, err := ioutil.TempFile("", "containerd-config-")
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create config file: %s\n", err)
os.Exit(1)
}
defer f.Close()
if _, err := f.WriteString("version = 1\n"); err != nil {
fmt.Fprintf(os.Stderr, "Failed to write to config file %s: %s\n", f.Name(), err)
os.Exit(1)
}
if _, err := f.WriteString("[plugins.linux]\n\tshim_debug = true\n"); err != nil {
fmt.Fprintf(os.Stderr, "Failed to write to config file %s: %s\n", f.Name(), err)
os.Exit(1)
}
return f.Name()
}
func TestDefaultRuntimeWithNamespaceLabels(t *testing.T) {
client, err := newClient(t, address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
ctx, cancel := testContext(t)
defer cancel()
namespaces := client.NamespaceService()
testRuntime := "testRuntime"
runtimeLabel := defaults.DefaultRuntimeNSLabel
if err := namespaces.SetLabel(ctx, testNamespace, runtimeLabel, testRuntime); err != nil {
t.Fatal(err)
}
testClient, err := New(address, WithDefaultNamespace(testNamespace))
if err != nil {
t.Fatal(err)
}
defer testClient.Close()
if testClient.runtime != testRuntime {
t.Error("failed to set default runtime from namespace labels")
}
}