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Refactoring task file mapper to support multiple backends. Started wo…
…rking on the swift file client. Added new docker exection client based on official docker client (original client stopped workin on latest docker update)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| package ga4gh_taskengine_worker | ||
|
|
||
| import ( | ||
| "github.com/docker/engine-api/client" | ||
| "github.com/docker/engine-api/types" | ||
| "github.com/docker/engine-api/types/container" | ||
| "github.com/docker/engine-api/types/network" | ||
| "golang.org/x/net/context" | ||
| "io" | ||
| "log" | ||
| "os" | ||
| "strings" | ||
| ) | ||
|
|
||
| type DockerEngine struct { | ||
| client *client.Client | ||
| } | ||
|
|
||
| func NewDockerEngine() *DockerEngine { | ||
| client, err := client.NewEnvClient() | ||
| if err != nil { | ||
| log.Printf("Docker Error\n") | ||
| return nil | ||
| } | ||
| return &DockerEngine{client: client} | ||
| } | ||
|
|
||
| func (self *DockerEngine) Run(containerName string, args []string, | ||
| binds []string, workdir string, remove bool, stdout *os.File, stderr *os.File) (int, error) { | ||
|
|
||
| list, err := self.client.ImageList(context.Background(), types.ImageListOptions{MatchName: containerName}) | ||
|
|
||
| if err != nil || len(list) == 0 { | ||
| log.Printf("Image %s not found", containerName) | ||
| pull_opt := types.ImagePullOptions{} | ||
| r, err := self.client.ImagePull(context.Background(), containerName, pull_opt) | ||
| if err != nil { | ||
| log.Printf("Image not pulled: %s", err) | ||
| return -1, err | ||
| } | ||
| for { | ||
| l := make([]byte, 1000) | ||
| _, e := r.Read(l) | ||
| if e == io.EOF { | ||
| break | ||
| } | ||
| log.Printf("%s", l) | ||
| } | ||
| r.Close() | ||
| log.Printf("Image Pulled") | ||
| } | ||
|
|
||
| container, err := self.client.ContainerCreate(context.Background(), | ||
| &container.Config{Cmd: args, Image: containerName, Tty: true}, | ||
| &container.HostConfig{Binds: binds}, | ||
| &network.NetworkingConfig{}, | ||
| "", | ||
| ) | ||
|
|
||
| if err != nil { | ||
| log.Printf("Docker run Error: %s", err) | ||
| return 0, err | ||
| } | ||
|
|
||
| log.Printf("Starting Docker (mount: %s): %s", strings.Join(binds, ","), strings.Join(args, " ")) | ||
| err = self.client.ContainerStart(context.Background(), container.ID, types.ContainerStartOptions{}) | ||
|
|
||
| if err != nil { | ||
| log.Printf("Docker run Error: %s", err) | ||
| return 0, err | ||
| } | ||
|
|
||
| log.Printf("Attaching Container: %s", container.ID) | ||
| exit_code, err := self.client.ContainerWait(context.Background(), container.ID) | ||
| if err != nil { | ||
| log.Printf("docker %s error: %s", container.ID, err) | ||
| } else { | ||
| log.Printf("docker %s complete", container.ID, err) | ||
| } | ||
|
|
||
| if stdout != nil { | ||
| stdout_log, _ := self.client.ContainerLogs(context.Background(), container.ID, types.ContainerLogsOptions{ShowStdout: true, Details: false}) | ||
| buffer := make([]byte, 10240) | ||
| for { | ||
| l, e := stdout_log.Read(buffer) | ||
| if e == io.EOF { | ||
| break | ||
| } | ||
| stdout.Write(buffer[:l]) | ||
| } | ||
| stdout_log.Close() | ||
| } | ||
|
|
||
| if stderr != nil { | ||
| stderr_log, _ := self.client.ContainerLogs(context.Background(), container.ID, types.ContainerLogsOptions{ShowStderr: true}) | ||
| buffer := make([]byte, 10240) | ||
| for { | ||
| l, e := stderr_log.Read(buffer) | ||
| if e == io.EOF { | ||
| break | ||
| } | ||
| stderr.Write(buffer[:l]) | ||
| } | ||
| stderr_log.Close() | ||
| } | ||
| self.client.ContainerRemove(context.Background(), container.ID, types.ContainerRemoveOptions{RemoveVolumes: true}) | ||
| return exit_code, nil | ||
| } |
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