Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
338 lines (297 sloc) 9.3 KB
/*
Copyright 2014 The Kubernetes Authors All rights reserved.
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 dockertools
import (
"fmt"
"os"
"reflect"
"sort"
"sync"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"github.com/fsouza/go-dockerclient"
)
// FakeDockerClient is a simple fake docker client, so that kubelet can be run for testing without requiring a real docker setup.
type FakeDockerClient struct {
sync.Mutex
ContainerList []docker.APIContainers
ExitedContainerList []docker.APIContainers
Container *docker.Container
ContainerMap map[string]*docker.Container
Image *docker.Image
Images []docker.APIImages
Errors map[string]error
called []string
Stopped []string
pulled []string
Created []string
Removed []string
RemovedImages util.StringSet
VersionInfo docker.Env
Information docker.Env
}
func (f *FakeDockerClient) ClearCalls() {
f.Lock()
defer f.Unlock()
f.called = []string{}
f.Stopped = []string{}
f.pulled = []string{}
f.Created = []string{}
f.Removed = []string{}
}
func (f *FakeDockerClient) AssertCalls(calls []string) (err error) {
f.Lock()
defer f.Unlock()
if !reflect.DeepEqual(calls, f.called) {
err = fmt.Errorf("expected %#v, got %#v", calls, f.called)
}
return
}
func (f *FakeDockerClient) AssertCreated(created []string) error {
f.Lock()
defer f.Unlock()
actualCreated := []string{}
for _, c := range f.Created {
dockerName, _, err := ParseDockerName(c)
if err != nil {
return fmt.Errorf("unexpected error: %v", err)
}
actualCreated = append(actualCreated, dockerName.ContainerName)
}
sort.StringSlice(created).Sort()
sort.StringSlice(actualCreated).Sort()
if !reflect.DeepEqual(created, actualCreated) {
return fmt.Errorf("expected %#v, got %#v", created, actualCreated)
}
return nil
}
func (f *FakeDockerClient) AssertStopped(stopped []string) error {
f.Lock()
defer f.Unlock()
sort.StringSlice(stopped).Sort()
sort.StringSlice(f.Stopped).Sort()
if !reflect.DeepEqual(stopped, f.Stopped) {
return fmt.Errorf("expected %#v, got %#v", stopped, f.Stopped)
}
return nil
}
func (f *FakeDockerClient) AssertUnorderedCalls(calls []string) (err error) {
f.Lock()
defer f.Unlock()
expected := make([]string, len(calls))
actual := make([]string, len(f.called))
copy(expected, calls)
copy(actual, f.called)
sort.StringSlice(expected).Sort()
sort.StringSlice(actual).Sort()
if !reflect.DeepEqual(actual, expected) {
err = fmt.Errorf("expected(sorted) %#v, got(sorted) %#v", expected, actual)
}
return
}
func (f *FakeDockerClient) popError(op string) error {
if f.Errors == nil {
return nil
}
err, ok := f.Errors[op]
if ok {
delete(f.Errors, op)
return err
} else {
return nil
}
}
// ListContainers is a test-spy implementation of DockerInterface.ListContainers.
// It adds an entry "list" to the internal method call record.
func (f *FakeDockerClient) ListContainers(options docker.ListContainersOptions) ([]docker.APIContainers, error) {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "list")
err := f.popError("list")
if options.All {
return append(f.ContainerList, f.ExitedContainerList...), err
}
return append([]docker.APIContainers{}, f.ContainerList...), err
}
// InspectContainer is a test-spy implementation of DockerInterface.InspectContainer.
// It adds an entry "inspect" to the internal method call record.
func (f *FakeDockerClient) InspectContainer(id string) (*docker.Container, error) {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "inspect_container")
err := f.popError("inspect_container")
if f.ContainerMap != nil {
if container, ok := f.ContainerMap[id]; ok {
return container, err
}
}
return f.Container, err
}
// InspectImage is a test-spy implementation of DockerInterface.InspectImage.
// It adds an entry "inspect" to the internal method call record.
func (f *FakeDockerClient) InspectImage(name string) (*docker.Image, error) {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "inspect_image")
err := f.popError("inspect_image")
return f.Image, err
}
// CreateContainer is a test-spy implementation of DockerInterface.CreateContainer.
// It adds an entry "create" to the internal method call record.
func (f *FakeDockerClient) CreateContainer(c docker.CreateContainerOptions) (*docker.Container, error) {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "create")
err := f.popError("create")
if err == nil {
f.Created = append(f.Created, c.Name)
// This is not a very good fake. We'll just add this container's name to the list.
// Docker likes to add a '/', so copy that behavior.
name := "/" + c.Name
f.ContainerList = append(f.ContainerList, docker.APIContainers{ID: name, Names: []string{name}, Image: c.Config.Image})
return &docker.Container{ID: name}, nil
}
return nil, err
}
// StartContainer is a test-spy implementation of DockerInterface.StartContainer.
// It adds an entry "start" to the internal method call record.
func (f *FakeDockerClient) StartContainer(id string, hostConfig *docker.HostConfig) error {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "start")
err := f.popError("start")
if err == nil {
f.Container = &docker.Container{
ID: id,
Name: id, // For testing purpose, we set name to id
Config: &docker.Config{Image: "testimage"},
HostConfig: hostConfig,
State: docker.State{
Running: true,
Pid: os.Getpid(),
},
NetworkSettings: &docker.NetworkSettings{IPAddress: "1.2.3.4"},
}
}
return err
}
// StopContainer is a test-spy implementation of DockerInterface.StopContainer.
// It adds an entry "stop" to the internal method call record.
func (f *FakeDockerClient) StopContainer(id string, timeout uint) error {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "stop")
err := f.popError("stop")
if err == nil {
f.Stopped = append(f.Stopped, id)
var newList []docker.APIContainers
for _, container := range f.ContainerList {
if container.ID == id {
f.ExitedContainerList = append(f.ExitedContainerList, container)
continue
}
newList = append(newList, container)
}
f.ContainerList = newList
}
return err
}
func (f *FakeDockerClient) RemoveContainer(opts docker.RemoveContainerOptions) error {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "remove")
err := f.popError("remove")
if err == nil {
f.Removed = append(f.Removed, opts.ID)
}
return err
}
// Logs is a test-spy implementation of DockerInterface.Logs.
// It adds an entry "logs" to the internal method call record.
func (f *FakeDockerClient) Logs(opts docker.LogsOptions) error {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "logs")
return f.popError("logs")
}
// PullImage is a test-spy implementation of DockerInterface.StopContainer.
// It adds an entry "pull" to the internal method call record.
func (f *FakeDockerClient) PullImage(opts docker.PullImageOptions, auth docker.AuthConfiguration) error {
f.Lock()
defer f.Unlock()
f.called = append(f.called, "pull")
err := f.popError("pull")
if err == nil {
registry := opts.Registry
if len(registry) != 0 {
registry = registry + "/"
}
f.pulled = append(f.pulled, fmt.Sprintf("%s%s:%s", registry, opts.Repository, opts.Tag))
}
return err
}
func (f *FakeDockerClient) Version() (*docker.Env, error) {
return &f.VersionInfo, nil
}
func (f *FakeDockerClient) Info() (*docker.Env, error) {
return &f.Information, nil
}
func (f *FakeDockerClient) CreateExec(_ docker.CreateExecOptions) (*docker.Exec, error) {
return &docker.Exec{"12345678"}, nil
}
func (f *FakeDockerClient) StartExec(_ string, _ docker.StartExecOptions) error {
return nil
}
func (f *FakeDockerClient) ListImages(opts docker.ListImagesOptions) ([]docker.APIImages, error) {
err := f.popError("list_images")
return f.Images, err
}
func (f *FakeDockerClient) RemoveImage(image string) error {
err := f.popError("remove_image")
if err == nil {
f.RemovedImages.Insert(image)
}
return err
}
// FakeDockerPuller is a stub implementation of DockerPuller.
type FakeDockerPuller struct {
sync.Mutex
HasImages []string
ImagesPulled []string
// Every pull will return the first error here, and then reslice
// to remove it. Will give nil errors if this slice is empty.
ErrorsToInject []error
}
// Pull records the image pull attempt, and optionally injects an error.
func (f *FakeDockerPuller) Pull(image string) (err error) {
f.Lock()
defer f.Unlock()
f.ImagesPulled = append(f.ImagesPulled, image)
if len(f.ErrorsToInject) > 0 {
err = f.ErrorsToInject[0]
f.ErrorsToInject = f.ErrorsToInject[1:]
}
return err
}
func (f *FakeDockerPuller) IsImagePresent(name string) (bool, error) {
f.Lock()
defer f.Unlock()
if f.HasImages == nil {
return true, nil
}
for _, s := range f.HasImages {
if s == name {
return true, nil
}
}
return false, nil
}
You can’t perform that action at this time.