251 lines
9.0 KiB
Go
251 lines
9.0 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"errors"
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"io"
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"os"
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"testing"
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"time"
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"github.com/containerd/containerd/api/services/execution"
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"github.com/containerd/containerd/api/types/mount"
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"github.com/containerd/containerd/api/types/task"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"golang.org/x/net/context"
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runtime "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1"
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"github.com/kubernetes-incubator/cri-containerd/pkg/metadata"
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ostesting "github.com/kubernetes-incubator/cri-containerd/pkg/os/testing"
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servertesting "github.com/kubernetes-incubator/cri-containerd/pkg/server/testing"
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)
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func TestStartContainer(t *testing.T) {
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testID := "test-id"
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testSandboxID := "test-sandbox-id"
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testMetadata := &metadata.ContainerMetadata{
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ID: testID,
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Name: "test-name",
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SandboxID: testSandboxID,
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CreatedAt: time.Now().UnixNano(),
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}
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testSandboxMetadata := &metadata.SandboxMetadata{
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ID: testSandboxID,
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Name: "test-sandbox-name",
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}
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testSandboxContainer := &task.Task{
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ID: testSandboxID,
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Pid: uint32(4321),
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Status: task.StatusRunning,
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}
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testMounts := []*mount.Mount{{Type: "bind", Source: "test-source"}}
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for desc, test := range map[string]struct {
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containerMetadata *metadata.ContainerMetadata
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sandboxMetadata *metadata.SandboxMetadata
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sandboxContainerdContainer *task.Task
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snapshotMountsErr bool
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prepareFIFOErr error
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createContainerErr error
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startContainerErr error
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expectStateChange bool
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expectCalls []string
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expectErr bool
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}{
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"should return error when container metadata does not exist": {
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containerMetadata: nil,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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expectCalls: []string{},
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expectErr: true,
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},
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"should return error when container is not in created state": {
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containerMetadata: &metadata.ContainerMetadata{
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ID: testID,
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Name: "test-name",
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SandboxID: testSandboxID,
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CreatedAt: time.Now().UnixNano(),
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StartedAt: time.Now().UnixNano(),
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},
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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expectCalls: []string{},
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expectErr: true,
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},
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"should return error when container is in removing state": {
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containerMetadata: &metadata.ContainerMetadata{
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ID: testID,
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Name: "test-name",
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SandboxID: testSandboxID,
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CreatedAt: time.Now().UnixNano(),
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Removing: true,
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},
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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expectCalls: []string{},
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expectErr: true,
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},
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"should return error when sandbox does not exist": {
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containerMetadata: testMetadata,
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sandboxMetadata: nil,
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sandboxContainerdContainer: testSandboxContainer,
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expectStateChange: true,
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expectCalls: []string{},
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expectErr: true,
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},
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"should return error when sandbox is not running": {
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containerMetadata: testMetadata,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: &task.Task{
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ID: testSandboxID,
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Pid: uint32(4321),
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Status: task.StatusStopped,
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},
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expectStateChange: true,
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expectCalls: []string{"info"},
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expectErr: true,
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},
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"should return error when snapshot mounts fails": {
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containerMetadata: testMetadata,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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snapshotMountsErr: true,
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expectStateChange: true,
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expectCalls: []string{"info"},
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expectErr: true,
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},
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"should return error when fail to open streaming pipes": {
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containerMetadata: testMetadata,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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prepareFIFOErr: errors.New("open error"),
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expectStateChange: true,
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expectCalls: []string{"info"},
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expectErr: true,
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},
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"should return error when fail to create container": {
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containerMetadata: testMetadata,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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createContainerErr: errors.New("create error"),
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expectStateChange: true,
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expectCalls: []string{"info", "create"},
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expectErr: true,
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},
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"should return error when fail to start container": {
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containerMetadata: testMetadata,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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startContainerErr: errors.New("start error"),
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expectStateChange: true,
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// cleanup the containerd task.
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expectCalls: []string{"info", "create", "start", "delete"},
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expectErr: true,
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},
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"should be able to start container successfully": {
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containerMetadata: testMetadata,
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sandboxMetadata: testSandboxMetadata,
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sandboxContainerdContainer: testSandboxContainer,
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expectStateChange: true,
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expectCalls: []string{"info", "create", "start"},
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expectErr: false,
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},
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} {
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t.Logf("TestCase %q", desc)
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c := newTestCRIContainerdService()
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fake := c.taskService.(*servertesting.FakeExecutionClient)
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fakeOS := c.os.(*ostesting.FakeOS)
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fakeSnapshotClient := WithFakeSnapshotClient(c)
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if test.containerMetadata != nil {
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assert.NoError(t, c.containerStore.Create(*test.containerMetadata))
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}
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if test.sandboxMetadata != nil {
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assert.NoError(t, c.sandboxStore.Create(*test.sandboxMetadata))
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}
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if test.sandboxContainerdContainer != nil {
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fake.SetFakeTasks([]task.Task{*test.sandboxContainerdContainer})
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}
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if !test.snapshotMountsErr {
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fakeSnapshotClient.SetFakeMounts(testID, testMounts)
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}
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// TODO(random-liu): Test behavior with different streaming config.
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fakeOS.OpenFifoFn = func(context.Context, string, int, os.FileMode) (io.ReadWriteCloser, error) {
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return nopReadWriteCloser{}, test.prepareFIFOErr
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}
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if test.createContainerErr != nil {
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fake.InjectError("create", test.createContainerErr)
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}
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if test.startContainerErr != nil {
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fake.InjectError("start", test.startContainerErr)
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}
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resp, err := c.StartContainer(context.Background(), &runtime.StartContainerRequest{
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ContainerId: testID,
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})
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// Check containerd functions called.
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assert.Equal(t, test.expectCalls, fake.GetCalledNames())
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// Check results returned.
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if test.expectErr {
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assert.Error(t, err)
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assert.Nil(t, resp)
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} else {
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assert.NoError(t, err)
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assert.NotNil(t, resp)
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}
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// Check container state.
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meta, err := c.containerStore.Get(testID)
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if !test.expectStateChange {
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// Do not check the error, because container may not exist
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// in the test case.
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assert.Equal(t, meta, test.containerMetadata)
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continue
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}
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assert.NoError(t, err)
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require.NotNil(t, meta)
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if test.expectErr {
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t.Logf("container state should be in exited state when fail to start")
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assert.Equal(t, runtime.ContainerState_CONTAINER_EXITED, meta.State())
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assert.Zero(t, meta.Pid)
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assert.EqualValues(t, errorStartExitCode, meta.ExitCode)
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assert.Equal(t, errorStartReason, meta.Reason)
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assert.NotEmpty(t, meta.Message)
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_, err = fake.Info(context.Background(), &execution.InfoRequest{ContainerID: testID})
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assert.True(t, isContainerdGRPCNotFoundError(err),
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"containerd task should be cleaned up when fail to start")
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continue
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}
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t.Logf("container state should be running when start successfully")
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assert.Equal(t, runtime.ContainerState_CONTAINER_RUNNING, meta.State())
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info, err := fake.Info(context.Background(), &execution.InfoRequest{ContainerID: testID})
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assert.NoError(t, err)
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pid := info.Task.Pid
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assert.Equal(t, pid, meta.Pid)
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assert.Equal(t, task.StatusRunning, info.Task.Status)
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calls := fake.GetCalledDetails()
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createOpts, ok := calls[1].Argument.(*execution.CreateRequest)
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assert.True(t, ok, "2nd call should be create")
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_, stdout, stderr := getStreamingPipes(getContainerRootDir(c.rootDir, testID))
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assert.Equal(t, &execution.CreateRequest{
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ContainerID: testID,
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Rootfs: testMounts,
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// TODO(random-liu): Test streaming configurations.
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Stdout: stdout,
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Stderr: stderr,
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}, createOpts, "create options should be correct")
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}
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}
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