78ce5da988
A lot of packages use StringSet, but they don't use anything else from the util package. Moving StringSet into another package will shrink their dependency trees significantly.
363 lines
10 KiB
Go
363 lines
10 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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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 dockertools
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import (
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"encoding/json"
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"fmt"
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"os"
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"reflect"
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"sort"
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"sync"
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docker "github.com/fsouza/go-dockerclient"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/util/sets"
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)
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// FakeDockerClient is a simple fake docker client, so that kubelet can be run for testing without requiring a real docker setup.
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type FakeDockerClient struct {
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sync.Mutex
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ContainerList []docker.APIContainers
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ExitedContainerList []docker.APIContainers
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Container *docker.Container
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ContainerMap map[string]*docker.Container
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Image *docker.Image
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Images []docker.APIImages
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Errors map[string]error
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called []string
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Stopped []string
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pulled []string
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Created []string
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Removed []string
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RemovedImages sets.String
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VersionInfo docker.Env
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Information docker.Env
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ExecInspect *docker.ExecInspect
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execCmd []string
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}
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func (f *FakeDockerClient) ClearCalls() {
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f.Lock()
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defer f.Unlock()
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f.called = []string{}
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f.Stopped = []string{}
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f.pulled = []string{}
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f.Created = []string{}
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f.Removed = []string{}
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}
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func (f *FakeDockerClient) AssertCalls(calls []string) (err error) {
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f.Lock()
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defer f.Unlock()
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if !reflect.DeepEqual(calls, f.called) {
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err = fmt.Errorf("expected %#v, got %#v", calls, f.called)
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}
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return
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}
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func (f *FakeDockerClient) AssertCreated(created []string) error {
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f.Lock()
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defer f.Unlock()
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actualCreated := []string{}
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for _, c := range f.Created {
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dockerName, _, err := ParseDockerName(c)
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if err != nil {
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return fmt.Errorf("unexpected error: %v", err)
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}
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actualCreated = append(actualCreated, dockerName.ContainerName)
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}
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sort.StringSlice(created).Sort()
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sort.StringSlice(actualCreated).Sort()
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if !reflect.DeepEqual(created, actualCreated) {
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return fmt.Errorf("expected %#v, got %#v", created, actualCreated)
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}
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return nil
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}
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func (f *FakeDockerClient) AssertStopped(stopped []string) error {
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f.Lock()
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defer f.Unlock()
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sort.StringSlice(stopped).Sort()
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sort.StringSlice(f.Stopped).Sort()
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if !reflect.DeepEqual(stopped, f.Stopped) {
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return fmt.Errorf("expected %#v, got %#v", stopped, f.Stopped)
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}
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return nil
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}
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func (f *FakeDockerClient) AssertUnorderedCalls(calls []string) (err error) {
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f.Lock()
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defer f.Unlock()
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expected := make([]string, len(calls))
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actual := make([]string, len(f.called))
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copy(expected, calls)
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copy(actual, f.called)
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sort.StringSlice(expected).Sort()
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sort.StringSlice(actual).Sort()
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if !reflect.DeepEqual(actual, expected) {
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err = fmt.Errorf("expected(sorted) %#v, got(sorted) %#v", expected, actual)
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}
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return
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}
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func (f *FakeDockerClient) popError(op string) error {
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if f.Errors == nil {
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return nil
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}
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err, ok := f.Errors[op]
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if ok {
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delete(f.Errors, op)
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return err
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} else {
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return nil
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}
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}
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// ListContainers is a test-spy implementation of DockerInterface.ListContainers.
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// It adds an entry "list" to the internal method call record.
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func (f *FakeDockerClient) ListContainers(options docker.ListContainersOptions) ([]docker.APIContainers, error) {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "list")
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err := f.popError("list")
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if options.All {
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return append(f.ContainerList, f.ExitedContainerList...), err
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}
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return append([]docker.APIContainers{}, f.ContainerList...), err
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}
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// InspectContainer is a test-spy implementation of DockerInterface.InspectContainer.
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// It adds an entry "inspect" to the internal method call record.
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func (f *FakeDockerClient) InspectContainer(id string) (*docker.Container, error) {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "inspect_container")
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err := f.popError("inspect_container")
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if f.ContainerMap != nil {
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if container, ok := f.ContainerMap[id]; ok {
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return container, err
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}
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}
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return f.Container, err
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}
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// InspectImage is a test-spy implementation of DockerInterface.InspectImage.
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// It adds an entry "inspect" to the internal method call record.
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func (f *FakeDockerClient) InspectImage(name string) (*docker.Image, error) {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "inspect_image")
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err := f.popError("inspect_image")
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return f.Image, err
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}
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// CreateContainer is a test-spy implementation of DockerInterface.CreateContainer.
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// It adds an entry "create" to the internal method call record.
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func (f *FakeDockerClient) CreateContainer(c docker.CreateContainerOptions) (*docker.Container, error) {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "create")
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err := f.popError("create")
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if err == nil {
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f.Created = append(f.Created, c.Name)
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// This is not a very good fake. We'll just add this container's name to the list.
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// Docker likes to add a '/', so copy that behavior.
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name := "/" + c.Name
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f.ContainerList = append(f.ContainerList, docker.APIContainers{ID: name, Names: []string{name}, Image: c.Config.Image})
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return &docker.Container{ID: name}, nil
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}
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return nil, err
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}
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// StartContainer is a test-spy implementation of DockerInterface.StartContainer.
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// It adds an entry "start" to the internal method call record.
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func (f *FakeDockerClient) StartContainer(id string, hostConfig *docker.HostConfig) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "start")
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err := f.popError("start")
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if err == nil {
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f.Container = &docker.Container{
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ID: id,
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Name: id, // For testing purpose, we set name to id
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Config: &docker.Config{Image: "testimage"},
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HostConfig: hostConfig,
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State: docker.State{
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Running: true,
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Pid: os.Getpid(),
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},
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NetworkSettings: &docker.NetworkSettings{IPAddress: "1.2.3.4"},
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}
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}
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return err
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}
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// StopContainer is a test-spy implementation of DockerInterface.StopContainer.
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// It adds an entry "stop" to the internal method call record.
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func (f *FakeDockerClient) StopContainer(id string, timeout uint) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "stop")
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err := f.popError("stop")
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if err == nil {
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f.Stopped = append(f.Stopped, id)
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var newList []docker.APIContainers
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for _, container := range f.ContainerList {
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if container.ID == id {
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f.ExitedContainerList = append(f.ExitedContainerList, container)
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continue
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}
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newList = append(newList, container)
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}
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f.ContainerList = newList
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}
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return err
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}
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func (f *FakeDockerClient) RemoveContainer(opts docker.RemoveContainerOptions) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "remove")
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err := f.popError("remove")
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if err == nil {
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f.Removed = append(f.Removed, opts.ID)
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}
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return err
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}
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// Logs is a test-spy implementation of DockerInterface.Logs.
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// It adds an entry "logs" to the internal method call record.
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func (f *FakeDockerClient) Logs(opts docker.LogsOptions) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "logs")
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return f.popError("logs")
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}
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// PullImage is a test-spy implementation of DockerInterface.StopContainer.
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// It adds an entry "pull" to the internal method call record.
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func (f *FakeDockerClient) PullImage(opts docker.PullImageOptions, auth docker.AuthConfiguration) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "pull")
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err := f.popError("pull")
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if err == nil {
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registry := opts.Registry
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if len(registry) != 0 {
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registry = registry + "/"
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}
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authJson, _ := json.Marshal(auth)
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f.pulled = append(f.pulled, fmt.Sprintf("%s%s:%s using %s", registry, opts.Repository, opts.Tag, string(authJson)))
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}
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return err
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}
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func (f *FakeDockerClient) Version() (*docker.Env, error) {
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return &f.VersionInfo, nil
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}
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func (f *FakeDockerClient) Info() (*docker.Env, error) {
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return &f.Information, nil
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}
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func (f *FakeDockerClient) CreateExec(opts docker.CreateExecOptions) (*docker.Exec, error) {
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f.Lock()
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defer f.Unlock()
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f.execCmd = opts.Cmd
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f.called = append(f.called, "create_exec")
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return &docker.Exec{ID: "12345678"}, nil
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}
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func (f *FakeDockerClient) StartExec(_ string, _ docker.StartExecOptions) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "start_exec")
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return nil
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}
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func (f *FakeDockerClient) AttachToContainer(opts docker.AttachToContainerOptions) error {
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f.Lock()
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defer f.Unlock()
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f.called = append(f.called, "attach")
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return nil
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}
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func (f *FakeDockerClient) InspectExec(id string) (*docker.ExecInspect, error) {
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return f.ExecInspect, f.popError("inspect_exec")
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}
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func (f *FakeDockerClient) ListImages(opts docker.ListImagesOptions) ([]docker.APIImages, error) {
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err := f.popError("list_images")
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return f.Images, err
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}
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func (f *FakeDockerClient) RemoveImage(image string) error {
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err := f.popError("remove_image")
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if err == nil {
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f.RemovedImages.Insert(image)
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}
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return err
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}
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// FakeDockerPuller is a stub implementation of DockerPuller.
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type FakeDockerPuller struct {
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sync.Mutex
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HasImages []string
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ImagesPulled []string
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// Every pull will return the first error here, and then reslice
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// to remove it. Will give nil errors if this slice is empty.
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ErrorsToInject []error
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}
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// Pull records the image pull attempt, and optionally injects an error.
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func (f *FakeDockerPuller) Pull(image string, secrets []api.Secret) (err error) {
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f.Lock()
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defer f.Unlock()
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f.ImagesPulled = append(f.ImagesPulled, image)
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if len(f.ErrorsToInject) > 0 {
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err = f.ErrorsToInject[0]
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f.ErrorsToInject = f.ErrorsToInject[1:]
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}
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return err
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}
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func (f *FakeDockerPuller) IsImagePresent(name string) (bool, error) {
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f.Lock()
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defer f.Unlock()
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if f.HasImages == nil {
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return true, nil
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}
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for _, s := range f.HasImages {
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if s == name {
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return true, nil
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}
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}
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return false, nil
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}
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