mirror of https://github.com/k3s-io/k3s
181 lines
5.3 KiB
Go
181 lines
5.3 KiB
Go
// +build !dockerless
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/*
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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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"fmt"
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"strings"
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"time"
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dockertypes "github.com/docker/docker/api/types"
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runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
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"k8s.io/kubernetes/pkg/kubelet/dockershim/libdocker"
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)
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// This file contains helper functions to convert docker API types to runtime
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// API types, or vice versa.
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func imageToRuntimeAPIImage(image *dockertypes.ImageSummary) (*runtimeapi.Image, error) {
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if image == nil {
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return nil, fmt.Errorf("unable to convert a nil pointer to a runtime API image")
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}
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size := uint64(image.VirtualSize)
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return &runtimeapi.Image{
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Id: image.ID,
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RepoTags: image.RepoTags,
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RepoDigests: image.RepoDigests,
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Size_: size,
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}, nil
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}
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func imageInspectToRuntimeAPIImage(image *dockertypes.ImageInspect) (*runtimeapi.Image, error) {
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if image == nil || image.Config == nil {
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return nil, fmt.Errorf("unable to convert a nil pointer to a runtime API image")
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}
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size := uint64(image.VirtualSize)
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runtimeImage := &runtimeapi.Image{
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Id: image.ID,
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RepoTags: image.RepoTags,
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RepoDigests: image.RepoDigests,
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Size_: size,
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}
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uid, username := getUserFromImageUser(image.Config.User)
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if uid != nil {
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runtimeImage.Uid = &runtimeapi.Int64Value{Value: *uid}
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}
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runtimeImage.Username = username
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return runtimeImage, nil
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}
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func toPullableImageID(id string, image *dockertypes.ImageInspect) string {
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// Default to the image ID, but if RepoDigests is not empty, use
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// the first digest instead.
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imageID := DockerImageIDPrefix + id
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if image != nil && len(image.RepoDigests) > 0 {
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imageID = DockerPullableImageIDPrefix + image.RepoDigests[0]
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}
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return imageID
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}
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func toRuntimeAPIContainer(c *dockertypes.Container) (*runtimeapi.Container, error) {
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state := toRuntimeAPIContainerState(c.Status)
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if len(c.Names) == 0 {
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return nil, fmt.Errorf("unexpected empty container name: %+v", c)
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}
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metadata, err := parseContainerName(c.Names[0])
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if err != nil {
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return nil, err
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}
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labels, annotations := extractLabels(c.Labels)
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sandboxID := c.Labels[sandboxIDLabelKey]
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// The timestamp in dockertypes.Container is in seconds.
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createdAt := c.Created * int64(time.Second)
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return &runtimeapi.Container{
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Id: c.ID,
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PodSandboxId: sandboxID,
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Metadata: metadata,
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Image: &runtimeapi.ImageSpec{Image: c.Image},
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ImageRef: c.ImageID,
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State: state,
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CreatedAt: createdAt,
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Labels: labels,
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Annotations: annotations,
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}, nil
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}
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func toDockerContainerStatus(state runtimeapi.ContainerState) string {
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switch state {
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case runtimeapi.ContainerState_CONTAINER_CREATED:
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return "created"
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case runtimeapi.ContainerState_CONTAINER_RUNNING:
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return "running"
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case runtimeapi.ContainerState_CONTAINER_EXITED:
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return "exited"
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case runtimeapi.ContainerState_CONTAINER_UNKNOWN:
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fallthrough
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default:
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return "unknown"
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}
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}
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func toRuntimeAPIContainerState(state string) runtimeapi.ContainerState {
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// Parse the state string in dockertypes.Container. This could break when
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// we upgrade docker.
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switch {
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case strings.HasPrefix(state, libdocker.StatusRunningPrefix):
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return runtimeapi.ContainerState_CONTAINER_RUNNING
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case strings.HasPrefix(state, libdocker.StatusExitedPrefix):
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return runtimeapi.ContainerState_CONTAINER_EXITED
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case strings.HasPrefix(state, libdocker.StatusCreatedPrefix):
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return runtimeapi.ContainerState_CONTAINER_CREATED
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default:
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return runtimeapi.ContainerState_CONTAINER_UNKNOWN
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}
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}
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func toRuntimeAPISandboxState(state string) runtimeapi.PodSandboxState {
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// Parse the state string in dockertypes.Container. This could break when
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// we upgrade docker.
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switch {
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case strings.HasPrefix(state, libdocker.StatusRunningPrefix):
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return runtimeapi.PodSandboxState_SANDBOX_READY
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default:
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return runtimeapi.PodSandboxState_SANDBOX_NOTREADY
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}
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}
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func containerToRuntimeAPISandbox(c *dockertypes.Container) (*runtimeapi.PodSandbox, error) {
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state := toRuntimeAPISandboxState(c.Status)
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if len(c.Names) == 0 {
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return nil, fmt.Errorf("unexpected empty sandbox name: %+v", c)
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}
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metadata, err := parseSandboxName(c.Names[0])
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if err != nil {
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return nil, err
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}
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labels, annotations := extractLabels(c.Labels)
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// The timestamp in dockertypes.Container is in seconds.
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createdAt := c.Created * int64(time.Second)
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return &runtimeapi.PodSandbox{
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Id: c.ID,
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Metadata: metadata,
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State: state,
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CreatedAt: createdAt,
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Labels: labels,
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Annotations: annotations,
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}, nil
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}
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func checkpointToRuntimeAPISandbox(id string, checkpoint DockershimCheckpoint) *runtimeapi.PodSandbox {
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state := runtimeapi.PodSandboxState_SANDBOX_NOTREADY
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_, name, namespace, _, _ := checkpoint.GetData()
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return &runtimeapi.PodSandbox{
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Id: id,
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Metadata: &runtimeapi.PodSandboxMetadata{
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Name: name,
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Namespace: namespace,
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},
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State: state,
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}
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}
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