1package artifactserver 2 3import ( 4 "io" 5 "net/http" 6 "strconv" 7 8 "github.com/concourse/baggageclaim" 9 "github.com/concourse/concourse/atc/db" 10) 11 12func (s *Server) GetArtifact(team db.Team) http.Handler { 13 logger := s.logger.Session("get-artifact") 14 15 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { 16 17 w.Header().Set("Content-Type", "application/octet-stream") 18 19 artifactID, err := strconv.Atoi(r.FormValue(":artifact_id")) 20 if err != nil { 21 logger.Error("failed-to-get-artifact-id", err) 22 w.WriteHeader(http.StatusInternalServerError) 23 return 24 } 25 26 artifactVolume, found, err := team.FindVolumeForWorkerArtifact(artifactID) 27 if err != nil { 28 logger.Error("failed-to-get-artifact-volume", err) 29 w.WriteHeader(http.StatusInternalServerError) 30 return 31 } 32 33 if !found { 34 logger.Error("failed-to-find-artifact-volume", err) 35 w.WriteHeader(http.StatusNotFound) 36 return 37 } 38 39 workerVolume, found, err := s.workerClient.FindVolume(logger, team.ID(), artifactVolume.Handle()) 40 if err != nil { 41 logger.Error("failed-to-get-worker-volume", err) 42 w.WriteHeader(http.StatusInternalServerError) 43 return 44 } 45 46 if !found { 47 logger.Error("failed-to-find-worker-volume", err) 48 w.WriteHeader(http.StatusNotFound) 49 return 50 } 51 52 reader, err := workerVolume.StreamOut(r.Context(), "/", baggageclaim.GzipEncoding) 53 if err != nil { 54 logger.Error("failed-to-stream-volume-contents", err) 55 w.WriteHeader(http.StatusInternalServerError) 56 return 57 } 58 59 defer reader.Close() 60 61 _, err = io.Copy(w, reader) 62 if err != nil { 63 logger.Error("failed-to-encode-artifact", err) 64 } 65 }) 66} 67