func (svc *IService) Exec(command []string) error {
ctr, err := docker.FindContainer(svc.name())
if err != nil {
return err
}
output, err := utils.AttachAndRun(ctr.ID, command)
if err != nil {
return err
}
os.Stdout.Write(output)
return nil
}
func attachAndRun(dockerID, command string) error {
if dockerID == "" {
return errors.New("missing docker ID")
} else if command == "" {
return nil
}
output, err := utils.AttachAndRun(dockerID, []string{command})
if err != nil {
err = fmt.Errorf("%s (%s)", string(output), err)
glog.Errorf("Could not pause container %s: %s", dockerID, err)
}
return err
}
// AttachAndRun implements zkdocker.ActionHandler; it attaches to a running
// container and performs a command as specified by the container's service
// definition
func (a *HostAgent) AttachAndRun(dockerID string, command []string) ([]byte, error) {
return utils.AttachAndRun(dockerID, command)
}