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fake_image_service.go
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fake_image_service.go
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/*
Copyright 2016 The Kubernetes Authors.
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 (
"sync"
"testing"
"github.com/stretchr/testify/assert"
runtimeapi "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
"k8s.io/kubernetes/pkg/kubelet/util/sliceutils"
)
type FakeImageService struct {
sync.Mutex
FakeImageSize uint64
Called []string
Images map[string]*runtimeapi.Image
pulledImages []*pulledImage
}
func (r *FakeImageService) SetFakeImages(images []string) {
r.Lock()
defer r.Unlock()
r.Images = make(map[string]*runtimeapi.Image)
for _, image := range images {
r.Images[image] = r.makeFakeImage(image)
}
}
func (r *FakeImageService) SetFakeImageSize(size uint64) {
r.Lock()
defer r.Unlock()
r.FakeImageSize = size
}
func NewFakeImageService() *FakeImageService {
return &FakeImageService{
Called: make([]string, 0),
Images: make(map[string]*runtimeapi.Image),
}
}
func (r *FakeImageService) makeFakeImage(image string) *runtimeapi.Image {
return &runtimeapi.Image{
Id: image,
Size_: r.FakeImageSize,
RepoTags: []string{image},
}
}
func (r *FakeImageService) ListImages(filter *runtimeapi.ImageFilter) ([]*runtimeapi.Image, error) {
r.Lock()
defer r.Unlock()
r.Called = append(r.Called, "ListImages")
images := make([]*runtimeapi.Image, 0)
for _, img := range r.Images {
if filter != nil && filter.Image != nil {
if !sliceutils.StringInSlice(filter.Image.Image, img.RepoTags) {
continue
}
}
images = append(images, img)
}
return images, nil
}
func (r *FakeImageService) ImageStatus(image *runtimeapi.ImageSpec) (*runtimeapi.Image, error) {
r.Lock()
defer r.Unlock()
r.Called = append(r.Called, "ImageStatus")
return r.Images[image.Image], nil
}
func (r *FakeImageService) PullImage(image *runtimeapi.ImageSpec, auth *runtimeapi.AuthConfig) (string, error) {
r.Lock()
defer r.Unlock()
r.Called = append(r.Called, "PullImage")
r.pulledImages = append(r.pulledImages, &pulledImage{imageSpec: image, authConfig: auth})
// ImageID should be randomized for real container runtime, but here just use
// image's name for easily making fake images.
imageID := image.Image
if _, ok := r.Images[imageID]; !ok {
r.Images[imageID] = r.makeFakeImage(image.Image)
}
return imageID, nil
}
func (r *FakeImageService) RemoveImage(image *runtimeapi.ImageSpec) error {
r.Lock()
defer r.Unlock()
r.Called = append(r.Called, "RemoveImage")
// Remove the image
delete(r.Images, image.Image)
return nil
}
// ImageFsInfo returns information of the filesystem that is used to store images.
func (r *FakeImageService) ImageFsInfo(req *runtimeapi.ImageFsInfoRequest) (*runtimeapi.ImageFsInfoResponse, error) {
r.Lock()
defer r.Unlock()
r.Called = append(r.Called, "ImageFsInfo")
return nil, nil
}
func (r *FakeImageService) AssertImagePulledWithAuth(t *testing.T, image *runtimeapi.ImageSpec, auth *runtimeapi.AuthConfig, failMsg string) {
r.Lock()
defer r.Unlock()
expected := &pulledImage{imageSpec: image, authConfig: auth}
assert.Contains(t, r.pulledImages, expected, failMsg)
}
type pulledImage struct {
imageSpec *runtimeapi.ImageSpec
authConfig *runtimeapi.AuthConfig
}