/
container.go
247 lines (223 loc) · 8.12 KB
/
container.go
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package dockerclient
import (
"context"
"fmt"
"time"
dockertypes "github.com/docker/docker/api/types"
dockerfilters "github.com/docker/docker/api/types/filters"
"github.com/golang/glog"
"github.com/tangfeixiong/go-to-docker/pb"
mobypb "github.com/tangfeixiong/go-to-docker/pb/moby"
containerpb "github.com/tangfeixiong/go-to-docker/pb/moby/container"
"github.com/tangfeixiong/go-to-docker/pkg/credentialprovider"
"github.com/tangfeixiong/go-to-docker/pkg/kubeletcopycat/dockershim/libdocker"
utilerrors "github.com/tangfeixiong/go-to-docker/pkg/util/errors"
"github.com/tangfeixiong/go-to-docker/pkg/util/parsers"
)
func (cli *DockerClient) RunContainer(ctx context.Context, req *pb.DockerContainerRunReqResp) (*pb.DockerContainerRunReqResp, error) {
resp, err := req.DeepCopyChecked()
if err != nil {
glog.Errorf("Unable running container: %v", err)
return resp, fmt.Errorf("unable running container: %v", err)
}
client := cli.KubeDockerClient
err = ensureDockerImageExists(client, req.Config.Image)
if err != nil {
glog.Errorf("Unable to ensure image %q of running container: %v", req.Config.Image, err)
return resp, fmt.Errorf("failed to ensure image (%q) of running container: %v", req.Config.Image, err)
}
created, err := client.CreateContainer(req.ExportAsDockerApiTypeContainerCreateConfig())
if err != nil {
glog.Errorf("Failed to create container: %v", err)
return resp, err
}
resp.ContainerCreateCreatedBody = containerpb.ConvertFromDockerApiTypeContainerCreateCreatedBody(created)
resp.StateCode = 1
resp.StateMessage = "created"
glog.Infof("docker container %v created", resp.ContainerCreateCreatedBody.Id)
err = client.StartContainer(created.ID)
if err != nil {
glog.Errorf("Failed to start container: %v", err)
return resp, err
}
resp.StateCode = 0
resp.StateMessage = "started"
glog.Infof("docker container %v started", resp.ContainerCreateCreatedBody.Id)
return resp, nil
}
// inspired by: https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/dockershim/helpers.go#L315
// ensureSandboxImageExists pulls the sandbox image when it's not present
//
func ensureDockerImageExists(client libdocker.Interface, image string) error {
_, err := client.InspectImageByRef(image)
if err == nil {
return nil
}
if !libdocker.IsImageNotFoundError(err) {
return fmt.Errorf("failed to inspect image %q: %v", image, err)
}
repoToPull, _, _, err := parsers.ParseImageName(image)
if err != nil {
return err
}
keyring := credentialprovider.NewDockerKeyring()
creds, withCredentials := keyring.Lookup(repoToPull)
if !withCredentials {
glog.V(3).Infof("Pulling image %q without credentials", image)
err := client.PullImage(image, dockertypes.AuthConfig{}, dockertypes.ImagePullOptions{})
if err != nil {
return fmt.Errorf("failed pulling image %q: %v", image, err)
}
return nil
}
var pullErrs []error
for _, currentCreds := range creds {
authConfig := credentialprovider.LazyProvide(currentCreds)
err := client.PullImage(image, authConfig, dockertypes.ImagePullOptions{})
// If there was no error, return success
if err == nil {
return nil
}
pullErrs = append(pullErrs, err)
}
return utilerrors.NewAggregate(pullErrs)
}
func (cli *DockerClient) ListContainers(ctx context.Context, req *pb.DockerContainerListReqResp) (*pb.DockerContainerListReqResp, error) {
resp, err := req.DeepCopyCheckedArgs()
if err != nil {
glog.Errorf("Unable listing containers: %v", err)
return resp, fmt.Errorf("unable to list containers: %v", err)
}
client := cli.KubeDockerClient
affected, err := client.ListContainers(req.ContainerListOptions.ExportIntoDockerApiType())
if nil != err {
glog.Errorf("Failed to list containers: %v", err)
return resp, fmt.Errorf("failed to list docker containers: %v", err)
}
resp.Containers = make([]*mobypb.Container, len(affected))
for _, v := range affected {
resp.Containers = append(resp.Containers, mobypb.ConvertFromDockerApiTypeContainer(v))
}
resp.StateCode = 0
resp.StateMessage = "SUCCEEDED"
glog.Infoln("docker container listed")
return resp, nil
}
func (cli *DockerClient) InspectContainer(ctx context.Context, req *pb.DockerContainerInspectReqResp) (*pb.DockerContainerInspectReqResp, error) {
resp, err := req.DeepCopyCheckedArgs()
if err != nil {
glog.Errorf("Unable inspecting container: %v", err)
return resp, fmt.Errorf("uable to inspect docker container: %v", err)
}
client := cli.KubeDockerClient
switch req.KeyType {
case pb.DockerContainerInspectReqResp_NAME:
cond := dockerfilters.NewArgs()
cond.Add("name", req.Name)
affected, err := client.ListContainers(dockertypes.ContainerListOptions{
Filters: cond,
})
if nil != err {
glog.Errorf("Unable inspecting container by name: %v", err)
return resp, fmt.Errorf("unalbe to inspect docker container by name: %v", err)
}
var ok bool
LOOP:
for _, v := range affected {
for _, v1 := range v.Names {
if v1 == req.Name {
req.Id = v.ID
resp.Id = v.ID
ok = true
break LOOP
}
}
}
if !ok {
resp.StateCode = 100
glog.Errorln("Could not find correspond cotainer name in list")
return resp, fmt.Errorf("Could not find correspond container name %s", req.Name)
}
fallthrough
case pb.DockerContainerInspectReqResp_ID:
detailed, err := client.InspectContainer(resp.Id)
if nil != err {
glog.Errorf("Failed to inspect docker container: %v", err)
return resp, fmt.Errorf("Failed to inspect docker container: %v", err)
}
resp.ContainerJson = mobypb.ConvertFromDockerApiTypeContainerJSON(detailed)
}
resp.StateCode = 0
resp.StateMessage = "SUCCEEDED"
glog.Infof("docker container %s inspected", resp.Id)
return resp, nil
}
func (cli *DockerClient) RemoveContainer(ctx context.Context, req *pb.DockerContainerRemoveReqResp) (*pb.DockerContainerRemoveReqResp, error) {
resp, err := req.DeepCopyCheckedArgs()
if err != nil {
glog.Errorf("Unable removing container: %v", err)
return resp, fmt.Errorf("unable to remove container: %v", err)
}
client := cli.KubeDockerClient
switch req.KeyType {
case pb.DockerContainerRemoveReqResp_NAME:
cond := dockerfilters.NewArgs()
cond.Add("name", req.Name)
affected, err := client.ListContainers(dockertypes.ContainerListOptions{
Filters: cond,
})
if nil != err {
glog.Errorf("Unable to remove container by name: %v", err)
return resp, fmt.Errorf("unalbe to remove docker container by name: %v", err)
}
var ok bool
LOOP:
for _, v := range affected {
for _, v1 := range v.Names {
if v1 == req.Name {
req.Id = v.ID
resp.Id = v.ID
ok = true
break LOOP
}
}
}
if !ok {
resp.StateCode = 100
glog.Errorln("Could not find correspond cotainer name in list")
return resp, fmt.Errorf("Could not find correspond container name %s", req.Name)
}
fallthrough
case pb.DockerContainerRemoveReqResp_ID:
if err := client.StopContainer(resp.Id, 60*time.Second); err != nil {
// Stopping an already stopped container will not cause an error in dockerapi
glog.Warningf("Could not stop container before removing: %v", err)
}
err := client.RemoveContainer(resp.Id, req.ContainerRemoveOptions.ExportIntoDockerApiType())
if nil != err {
glog.Errorf("Failed to remove docker container: %v", err)
return resp, fmt.Errorf("Failed to remove docker container: %v", err)
}
}
resp.StateCode = 0
resp.StateMessage = "removed"
glog.Infof("docker container %s removed", resp.Id)
return resp, nil
}
func (cli *DockerClient) PruneContainers(ctx context.Context, req *pb.DockerContainerPruneReqResp) (*pb.DockerContainerPruneReqResp, error) {
resp, err := req.DeepCopyCheckedArgs()
if err != nil {
glog.Errorf("Unable to prune docker containers: %v", err)
return resp, fmt.Errorf("Unable to prune docker containers: %v", err)
}
report, err := cli.DockerApiClient.ContainersPrune(ctx, req.Filters.ExportIntoDockerApiType())
if err != nil {
glog.Errorf("Failed to prune docker containers: %v", err)
return resp, fmt.Errorf("Failed to prune docker containers: %v", err)
}
resp.ContainersPruneReport = mobypb.ConvertFromDockerApiTypeContainersPruneReport(report)
resp.StateCode = 0
resp.StateMessage = "pruned"
glog.Infof("docker containers pruned")
return resp, nil
}