85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
|
/*
|
||
|
|
Copyright 2015 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 dockertools
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
dockertypes "github.com/docker/engine-api/types"
|
||
|
|
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
|
||
|
|
)
|
||
|
|
|
||
|
|
// This file contains helper functions to convert docker API types to runtime
|
||
|
|
// (kubecontainer) types.
|
||
|
|
const (
|
||
|
|
statusRunningPrefix = "Up"
|
||
|
|
statusExitedPrefix = "Exited"
|
||
|
|
)
|
||
|
|
|
||
|
|
func mapState(state string) kubecontainer.ContainerState {
|
||
|
|
// Parse the state string in dockertypes.Container. This could break when
|
||
|
|
// we upgrade docker.
|
||
|
|
switch {
|
||
|
|
case strings.HasPrefix(state, statusRunningPrefix):
|
||
|
|
return kubecontainer.ContainerStateRunning
|
||
|
|
case strings.HasPrefix(state, statusExitedPrefix):
|
||
|
|
return kubecontainer.ContainerStateExited
|
||
|
|
default:
|
||
|
|
return kubecontainer.ContainerStateUnknown
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Converts dockertypes.Container to kubecontainer.Container.
|
||
|
|
func toRuntimeContainer(c *dockertypes.Container) (*kubecontainer.Container, error) {
|
||
|
|
if c == nil {
|
||
|
|
return nil, fmt.Errorf("unable to convert a nil pointer to a runtime container")
|
||
|
|
}
|
||
|
|
|
||
|
|
dockerName, hash, err := getDockerContainerNameInfo(c)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return &kubecontainer.Container{
|
||
|
|
ID: kubecontainer.DockerID(c.ID).ContainerID(),
|
||
|
|
Name: dockerName.ContainerName,
|
||
|
|
Image: c.Image,
|
||
|
|
ImageID: c.ImageID,
|
||
|
|
Hash: hash,
|
||
|
|
// (random-liu) docker uses status to indicate whether a container is running or exited.
|
||
|
|
// However, in kubernetes we usually use state to indicate whether a container is running or exited,
|
||
|
|
// while use status to indicate the comprehensive status of the container. So we have different naming
|
||
|
|
// norm here.
|
||
|
|
State: mapState(c.Status),
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Converts dockertypes.Image to kubecontainer.Image.
|
||
|
|
func toRuntimeImage(image *dockertypes.Image) (*kubecontainer.Image, error) {
|
||
|
|
if image == nil {
|
||
|
|
return nil, fmt.Errorf("unable to convert a nil pointer to a runtime image")
|
||
|
|
}
|
||
|
|
|
||
|
|
return &kubecontainer.Image{
|
||
|
|
ID: image.ID,
|
||
|
|
RepoTags: image.RepoTags,
|
||
|
|
RepoDigests: image.RepoDigests,
|
||
|
|
Size: image.VirtualSize,
|
||
|
|
}, nil
|
||
|
|
}
|