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fake_runtime.go
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fake_runtime.go
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/*
Copyright 2015 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 container
import (
"fmt"
"io"
"reflect"
"sync"
"time"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/volume"
)
// FakeRuntime is a fake container runtime for testing.
type FakeRuntime struct {
sync.Mutex
CalledFunctions []string
PodList []*Pod
ContainerList []*Container
ImageList []Image
PodStatus api.PodStatus
StartedPods []string
KilledPods []string
StartedContainers []string
KilledContainers []string
VersionInfo string
Err error
}
// FakeRuntime should implement Runtime.
var _ Runtime = &FakeRuntime{}
type FakeVersion struct {
Version string
}
func (fv *FakeVersion) String() string {
return fv.Version
}
func (fv *FakeVersion) Compare(other string) (int, error) {
result := 0
if fv.Version > other {
result = 1
} else if fv.Version < other {
result = -1
}
return result, nil
}
type FakeRuntimeCache struct {
getter podsGetter
}
func NewFakeRuntimeCache(getter podsGetter) RuntimeCache {
return &FakeRuntimeCache{getter}
}
func (f *FakeRuntimeCache) GetPods() ([]*Pod, error) {
return f.getter.GetPods(false)
}
func (f *FakeRuntimeCache) ForceUpdateIfOlder(time.Time) error {
return nil
}
// ClearCalls resets the FakeRuntime to the initial state.
func (f *FakeRuntime) ClearCalls() {
f.Lock()
defer f.Unlock()
f.CalledFunctions = []string{}
f.PodList = []*Pod{}
f.ContainerList = []*Container{}
f.PodStatus = api.PodStatus{}
f.StartedPods = []string{}
f.KilledPods = []string{}
f.StartedContainers = []string{}
f.KilledContainers = []string{}
f.VersionInfo = ""
f.Err = nil
}
func (f *FakeRuntime) assertList(expect []string, test []string) error {
if !reflect.DeepEqual(expect, test) {
return fmt.Errorf("expected %#v, got %#v", expect, test)
}
return nil
}
// AssertCalls test if the invoked functions are as expected.
func (f *FakeRuntime) AssertCalls(calls []string) error {
f.Lock()
defer f.Unlock()
return f.assertList(calls, f.CalledFunctions)
}
func (f *FakeRuntime) AssertStartedPods(pods []string) error {
f.Lock()
defer f.Unlock()
return f.assertList(pods, f.StartedPods)
}
func (f *FakeRuntime) AssertKilledPods(pods []string) error {
f.Lock()
defer f.Unlock()
return f.assertList(pods, f.KilledPods)
}
func (f *FakeRuntime) AssertStartedContainers(containers []string) error {
f.Lock()
defer f.Unlock()
return f.assertList(containers, f.StartedContainers)
}
func (f *FakeRuntime) AssertKilledContainers(containers []string) error {
f.Lock()
defer f.Unlock()
return f.assertList(containers, f.KilledContainers)
}
func (f *FakeRuntime) Version() (Version, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "Version")
return &FakeVersion{Version: f.VersionInfo}, f.Err
}
func (f *FakeRuntime) GetPods(all bool) ([]*Pod, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GetPods")
return f.PodList, f.Err
}
func (f *FakeRuntime) SyncPod(pod *api.Pod, _ Pod, _ api.PodStatus, _ []api.Secret, backOff *util.Backoff) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "SyncPod")
f.StartedPods = append(f.StartedPods, string(pod.UID))
for _, c := range pod.Spec.Containers {
f.StartedContainers = append(f.StartedContainers, c.Name)
}
return f.Err
}
func (f *FakeRuntime) KillPod(pod *api.Pod, runningPod Pod) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "KillPod")
f.KilledPods = append(f.KilledPods, string(runningPod.ID))
for _, c := range runningPod.Containers {
f.KilledContainers = append(f.KilledContainers, c.Name)
}
return f.Err
}
func (f *FakeRuntime) RunContainerInPod(container api.Container, pod *api.Pod, volumeMap map[string]volume.VolumePlugin) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "RunContainerInPod")
f.StartedContainers = append(f.StartedContainers, container.Name)
pod.Spec.Containers = append(pod.Spec.Containers, container)
for _, c := range pod.Spec.Containers {
if c.Name == container.Name { // Container already in the pod.
return f.Err
}
}
pod.Spec.Containers = append(pod.Spec.Containers, container)
return f.Err
}
func (f *FakeRuntime) KillContainerInPod(container api.Container, pod *api.Pod) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "KillContainerInPod")
f.KilledContainers = append(f.KilledContainers, container.Name)
var containers []api.Container
for _, c := range pod.Spec.Containers {
if c.Name == container.Name {
continue
}
containers = append(containers, c)
}
return f.Err
}
func (f *FakeRuntime) GetPodStatus(*api.Pod) (*api.PodStatus, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GetPodStatus")
status := f.PodStatus
return &status, f.Err
}
func (f *FakeRuntime) GetContainers(all bool) ([]*Container, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GetContainers")
return f.ContainerList, f.Err
}
func (f *FakeRuntime) ExecInContainer(containerID string, cmd []string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "ExecInContainer")
return f.Err
}
func (f *FakeRuntime) AttachContainer(containerID string, stdin io.Reader, stdout, stderr io.WriteCloser, tty bool) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "AttachContainer")
return f.Err
}
func (f *FakeRuntime) RunInContainer(containerID string, cmd []string) ([]byte, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "RunInContainer")
return []byte{}, f.Err
}
func (f *FakeRuntime) GetContainerLogs(pod *api.Pod, containerID, tail string, follow bool, stdout, stderr io.Writer) (err error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GetContainerLogs")
return f.Err
}
func (f *FakeRuntime) PullImage(image ImageSpec, pullSecrets []api.Secret) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "PullImage")
return f.Err
}
func (f *FakeRuntime) IsImagePresent(image ImageSpec) (bool, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "IsImagePresent")
for _, i := range f.ImageList {
if i.ID == image.Image {
return true, f.Err
}
}
return false, f.Err
}
func (f *FakeRuntime) ListImages() ([]Image, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "ListImages")
return f.ImageList, f.Err
}
func (f *FakeRuntime) RemoveImage(image ImageSpec) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "RemoveImage")
index := 0
for i := range f.ImageList {
if f.ImageList[i].ID == image.Image {
index = i
break
}
}
f.ImageList = append(f.ImageList[:index], f.ImageList[index+1:]...)
return f.Err
}
func (f *FakeRuntime) PortForward(pod *Pod, port uint16, stream io.ReadWriteCloser) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "PortForward")
return f.Err
}