// dockerRun mimics the 'docker run --rm' CLI command. It uses the Docker Remote
// API to create and start a container and stream its logs. The container is
// removed after it terminates.
func dockerRun(client DockerClient, createOpts docker.CreateContainerOptions, logsOpts docker.LogsOptions) error {
// Create a new container.
glog.V(4).Infof("Creating container with options {Name:%q Config:%+v HostConfig:%+v} ...", createOpts.Name, createOpts.Config, createOpts.HostConfig)
c, err := client.CreateContainer(createOpts)
if err != nil {
return fmt.Errorf("create container %q: %v", createOpts.Name, err)
}
containerName := containerNameOrID(c)
removeContainer := func() {
glog.V(4).Infof("Removing container %q ...", containerName)
if err := client.RemoveContainer(docker.RemoveContainerOptions{ID: c.ID}); err != nil {
glog.V(0).Infof("warning: Failed to remove container %q: %v", containerName, err)
} else {
glog.V(4).Infof("Removed container %q", containerName)
}
}
startWaitContainer := func() error {
// Start the container.
glog.V(4).Infof("Starting container %q ...", containerName)
if err := client.StartContainer(c.ID, nil); err != nil {
return fmt.Errorf("start container %q: %v", containerName, err)
}
// Stream container logs.
logsOpts.Container = c.ID
glog.V(4).Infof("Streaming logs of container %q with options %+v ...", containerName, logsOpts)
if err := client.Logs(logsOpts); err != nil {
return fmt.Errorf("streaming logs of %q: %v", containerName, err)
}
// Return an error if the exit code of the container is non-zero.
glog.V(4).Infof("Waiting for container %q to stop ...", containerName)
exitCode, err := client.WaitContainer(c.ID)
if err != nil {
return fmt.Errorf("waiting for container %q to stop: %v", containerName, err)
}
if exitCode != 0 {
return fmt.Errorf("container %q returned non-zero exit code: %d", containerName, exitCode)
}
return nil
}
// the interrupt handler acts as a super-defer which will guarantee removeContainer is executed
// either when startWaitContainer finishes, or when a SIGQUIT/SIGINT/SIGTERM is received.
return interrupt.New(nil, removeContainer).Run(startWaitContainer)
}
// dockerRun mimics the 'docker run --rm' CLI command. It uses the Docker Remote
// API to create and start a container and stream its logs. The container is
// removed after it terminates.
func dockerRun(client DockerClient, createOpts docker.CreateContainerOptions, logsOpts docker.LogsOptions) error {
// Create a new container.
glog.V(4).Infof("Creating container with options {Name:%q Config:%+v HostConfig:%+v} ...", createOpts.Name, createOpts.Config, createOpts.HostConfig)
c, err := client.CreateContainer(createOpts)
if err != nil {
return fmt.Errorf("create container %q: %v", createOpts.Name, err)
}
containerName := containerNameOrID(c)
// Container was created, so we defer its removal.
defer func() {
glog.V(4).Infof("Removing container %q ...", containerName)
if err := client.RemoveContainer(docker.RemoveContainerOptions{ID: c.ID}); err != nil {
glog.Warningf("Failed to remove container %q: %v", containerName, err)
} else {
glog.V(4).Infof("Removed container %q", containerName)
}
}()
// Start the container.
glog.V(4).Infof("Starting container %q ...", containerName)
if err := client.StartContainer(c.ID, nil); err != nil {
return fmt.Errorf("start container %q: %v", containerName, err)
}
// Stream container logs.
logsOpts.Container = c.ID
glog.V(4).Infof("Streaming logs of container %q with options %+v ...", containerName, logsOpts)
if err := client.Logs(logsOpts); err != nil {
return fmt.Errorf("streaming logs of %q: %v", containerName, err)
}
// Return an error if the exit code of the container is non-zero.
glog.V(4).Infof("Waiting for container %q to stop ...", containerName)
exitCode, err := client.WaitContainer(c.ID)
if err != nil {
return fmt.Errorf("waiting for container %q to stop: %v", containerName, err)
}
if exitCode != 0 {
return fmt.Errorf("container %q returned non-zero exit code: %d", containerName, exitCode)
}
return nil
}
