func (job *Job) Exec(docker *dockerclient.DockerClient,
w io.Writer) error {
containerConfig := &dockerclient.ContainerConfig{
Image: job.Image,
Cmd: []string{"/bin/bash", "-c", job.Cmd},
AttachStdout: true,
AttachStderr: true,
}
cid, err := docker.CreateContainer(containerConfig,
fmt.Sprintf("spot-trader-job-%d", job.ID))
if err != nil {
return fmt.Errorf("creating container: %v", err)
}
defer func() {
if err = docker.RemoveContainer(cid, false, false); err != nil {
log.Printf("error removing container: %v", err)
}
}()
options := &dockerclient.AttachOptions{Stdout: true, Stderr: true, Stream: true}
stdout, err := docker.AttachContainer(cid, options)
if err != nil {
return fmt.Errorf("attaching: %v", err)
}
err = docker.StartContainer(cid, nil)
if err != nil {
return fmt.Errorf("starting container: %v", err)
}
done := make(chan struct{})
go func() {
err := copyDockerOut(w, w, stdout)
if err != nil {
log.Println(err)
}
stdout.Close()
close(done)
}()
<-done
err = docker.StopContainer(cid, 5)
if err != nil {
log.Printf("error stopping container: %v",
err)
}
return nil
}