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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 testing
import (
"fmt"
"io"
"reflect"
"sync"
"time"
"k8s.io/kubernetes/pkg/api"
. "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/types"
"k8s.io/kubernetes/pkg/util/flowcontrol"
"k8s.io/kubernetes/pkg/volume"
)
// FakeRuntime is a fake container runtime for testing.
type FakeRuntime struct {
sync.Mutex
CalledFunctions []string
PodList []*Pod
AllPodList []*Pod
ImageList []Image
APIPodStatus api.PodStatus
PodStatus PodStatus
StartedPods []string
KilledPods []string
StartedContainers []string
KilledContainers []string
VersionInfo string
APIVersionInfo string
RuntimeType string
Err error
InspectErr error
StatusErr 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 podsGetter interface {
GetPods(bool) ([]*Pod, error)
}
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.AllPodList = []*Pod{}
f.APIPodStatus = api.PodStatus{}
f.StartedPods = []string{}
f.KilledPods = []string{}
f.StartedContainers = []string{}
f.KilledContainers = []string{}
f.VersionInfo = ""
f.RuntimeType = ""
f.Err = nil
f.InspectErr = nil
f.StatusErr = 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) Type() string {
return f.RuntimeType
}
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) APIVersion() (Version, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "APIVersion")
return &FakeVersion{Version: f.APIVersionInfo}, f.Err
}
func (f *FakeRuntime) Status() error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "Status")
return f.StatusErr
}
func (f *FakeRuntime) GetPods(all bool) ([]*Pod, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GetPods")
if all {
return f.AllPodList, f.Err
}
return f.PodList, f.Err
}
func (f *FakeRuntime) SyncPod(pod *api.Pod, _ api.PodStatus, _ *PodStatus, _ []api.Secret, backOff *flowcontrol.Backoff) (result PodSyncResult) {
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)
}
// TODO(random-liu): Add SyncResult for starting and killing containers
if f.Err != nil {
result.Fail(f.Err)
}
return
}
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(uid types.UID, name, namespace string) (*PodStatus, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GetPodStatus")
status := f.PodStatus
return &status, f.Err
}
func (f *FakeRuntime) ExecInContainer(containerID ContainerID, 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 ContainerID, 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 ContainerID, 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 ContainerID, logOptions *api.PodLogOptions, 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, nil
}
}
return false, f.InspectErr
}
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
}
func (f *FakeRuntime) GarbageCollect(gcPolicy ContainerGCPolicy) error {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "GarbageCollect")
return f.Err
}
func (f *FakeRuntime) ImageStats() (*ImageStats, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "ImageStats")
return nil, f.Err
}