package registry import ( "github.com/dotcloud/docker/engine" ) // Service exposes registry capabilities in the standard Engine // interface. Once installed, it extends the engine with the // following calls: // // 'auth': Authenticate against the public registry // 'search': Search for images on the public registry // 'pull': Download images from any registry (TODO) // 'push': Upload images to any registry (TODO) type Service struct { } // NewService returns a new instance of Service ready to be // installed no an engine. func NewService() *Service { return &Service{} } // Install installs registry capabilities to eng. func (s *Service) Install(eng *engine.Engine) error { eng.Register("auth", s.Auth) eng.Register("search", s.Search) return nil } // Auth contacts the public registry with the provided credentials, // and returns OK if authentication was sucessful. // It can be used to verify the validity of a client's credentials. func (s *Service) Auth(job *engine.Job) engine.Status { var ( err error authConfig = &AuthConfig{} ) job.GetenvJson("authConfig", authConfig) // TODO: this is only done here because auth and registry need to be merged into one pkg if addr := authConfig.ServerAddress; addr != "" && addr != IndexServerAddress() { addr, err = ExpandAndVerifyRegistryUrl(addr) if err != nil { return job.Error(err) } authConfig.ServerAddress = addr } status, err := Login(authConfig, HTTPRequestFactory(nil)) if err != nil { return job.Error(err) } job.Printf("%s\n", status) return engine.StatusOK } // Search queries the public registry for images matching the specified // search terms, and returns the results. // // Argument syntax: search TERM // // Option environment: // 'authConfig': json-encoded credentials to authenticate against the registry. // The search extends to images only accessible via the credentials. // // 'metaHeaders': extra HTTP headers to include in the request to the registry. // The headers should be passed as a json-encoded dictionary. // // Output: // Results are sent as a collection of structured messages (using engine.Table). // Each result is sent as a separate message. // Results are ordered by number of stars on the public registry. func (s *Service) Search(job *engine.Job) engine.Status { if n := len(job.Args); n != 1 { return job.Errorf("Usage: %s TERM", job.Name) } var ( term = job.Args[0] metaHeaders = map[string][]string{} authConfig = &AuthConfig{} ) job.GetenvJson("authConfig", authConfig) job.GetenvJson("metaHeaders", metaHeaders) r, err := NewRegistry(authConfig, HTTPRequestFactory(metaHeaders), IndexServerAddress(), true) if err != nil { return job.Error(err) } results, err := r.SearchRepositories(term) if err != nil { return job.Error(err) } outs := engine.NewTable("star_count", 0) for _, result := range results.Results { out := &engine.Env{} out.Import(result) outs.Add(out) } outs.ReverseSort() if _, err := outs.WriteListTo(job.Stdout); err != nil { return job.Error(err) } return engine.StatusOK }