103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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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 dockershim
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import (
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dockertypes "github.com/docker/engine-api/types"
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runtimeapi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
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"k8s.io/kubernetes/pkg/kubelet/dockertools"
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)
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// This file implements methods in ImageManagerService.
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// ListImages lists existing images.
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func (ds *dockerService) ListImages(filter *runtimeapi.ImageFilter) ([]*runtimeapi.Image, error) {
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opts := dockertypes.ImageListOptions{}
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if filter != nil {
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if imgSpec := filter.GetImage(); imgSpec != nil {
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opts.MatchName = imgSpec.Image
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}
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}
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images, err := ds.client.ListImages(opts)
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if err != nil {
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return nil, err
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}
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result := []*runtimeapi.Image{}
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for _, i := range images {
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apiImage, err := imageToRuntimeAPIImage(&i)
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if err != nil {
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// TODO: log an error message?
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continue
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}
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result = append(result, apiImage)
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}
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return result, nil
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}
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// ImageStatus returns the status of the image, returns nil if the image doesn't present.
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func (ds *dockerService) ImageStatus(image *runtimeapi.ImageSpec) (*runtimeapi.Image, error) {
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imageInspect, err := ds.client.InspectImageByRef(image.Image)
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if err != nil {
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if dockertools.IsImageNotFoundError(err) {
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return nil, nil
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}
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return nil, err
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}
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return imageInspectToRuntimeAPIImage(imageInspect)
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}
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// PullImage pulls an image with authentication config.
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func (ds *dockerService) PullImage(image *runtimeapi.ImageSpec, auth *runtimeapi.AuthConfig) (string, error) {
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authConfig := dockertypes.AuthConfig{}
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if auth != nil {
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authConfig.Username = auth.Username
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authConfig.Password = auth.Password
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authConfig.ServerAddress = auth.ServerAddress
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authConfig.IdentityToken = auth.IdentityToken
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authConfig.RegistryToken = auth.RegistryToken
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}
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err := ds.client.PullImage(image.Image,
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authConfig,
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dockertypes.ImagePullOptions{},
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)
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if err != nil {
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return "", err
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}
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return dockertools.GetImageRef(ds.client, image.Image)
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}
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// RemoveImage removes the image.
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func (ds *dockerService) RemoveImage(image *runtimeapi.ImageSpec) error {
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// If the image has multiple tags, we need to remove all the tags
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// TODO: We assume image.Image is image ID here, which is true in the current implementation
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// of kubelet, but we should still clarify this in CRI.
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imageInspect, err := ds.client.InspectImageByID(image.Image)
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if err == nil && imageInspect != nil && len(imageInspect.RepoTags) > 1 {
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for _, tag := range imageInspect.RepoTags {
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if _, err := ds.client.RemoveImage(tag, dockertypes.ImageRemoveOptions{PruneChildren: true}); err != nil {
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return err
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}
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}
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return nil
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}
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_, err = ds.client.RemoveImage(image.Image, dockertypes.ImageRemoveOptions{PruneChildren: true})
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return err
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}
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