// Init the service.
func (d *Docker) Service() (Service, error) {
log.Print("Docker Service called")
// Ensure we have an image.
c, err := d.getDockerClient()
if err != nil {
return nil, errors.Trace(err)
}
if !docker.HaveImage(c, d.Name) {
// TODO(waigani) I think we should ask for user confirmation.
fmt.Printf("\nno local image found for %s. Pulling new image from %s", d.Name, d.Registry)
if err := d.Pull(false); err != nil {
return nil, err
}
}
return docker.NewService(d.Name)
}
// Pull the image for this tenet from the given registry.
func (d *Docker) Pull(update bool) error {
dClient, err := d.getDockerClient()
if err != nil {
return errors.Trace(err)
}
haveImage := docker.HaveImage(dClient, d.Name)
fmt.Printf("\npulling %s ... ", d.Name)
if haveImage && !update {
fmt.Printf("%s has already been pulled. Use --update to update.\n", d.Name)
return nil
}
if update || !haveImage {
if err := docker.PullImage(dClient, d.Name, d.Registry, d.Tag); err != nil {
return err
}
}
fmt.Printf("done.\n")
return nil
}