move history to a job

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)

api.go

@@ -202,7 +202,7 @@ func getImagesJSON(srv *Server, version float64, w http.ResponseWriter, r *http.
 		return err
 	}
 
-	if version < 1.9 { // Send as a valide JSON array
+	if version < 1.9 { // Send as a valid JSON array
 		outs := engine.NewTable("Created", 0)
 		if _, err := outs.ReadFrom(buffer); err != nil {
 			return err
@@ -313,13 +313,31 @@ func getImagesHistory(srv *Server, version float64, w http.ResponseWriter, r *ht
 	if vars == nil {
 		return fmt.Errorf("Missing parameter")
 	}
-	name := vars["name"]
-	outs, err := srv.ImageHistory(name)
-	if err != nil {
+
+	var (
+		buffer *bytes.Buffer
+		job    = srv.Eng.Job("history", vars["name"])
+	)
+
+	if version >= 1.9 {
+		job.Stdout.Add(w)
+	} else {
+		buffer = bytes.NewBuffer(nil)
+		job.Stdout.Add(buffer)
+	}
+	if err := job.Run(); err != nil {
 		return err
 	}
-
-	return writeJSON(w, http.StatusOK, outs)
+	if version < 1.9 { // Send as a valid JSON array
+		outs := engine.NewTable("Created", 0)
+		if _, err := outs.ReadFrom(buffer); err != nil {
+			return err
+		}
+		if _, err := outs.WriteListTo(w); err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
 func getContainersChanges(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {

commands.go

@@ -862,9 +862,8 @@ func (cli *DockerCli) CmdHistory(args ...string) error {
 		return err
 	}
 
-	var outs []APIHistory
-	err = json.Unmarshal(body, &outs)
-	if err != nil {
+	outs := engine.NewTable("Created", 0)
+	if _, err := outs.ReadFrom(bytes.NewReader(body)); err != nil {
 		return err
 	}
 
@@ -873,27 +872,28 @@ func (cli *DockerCli) CmdHistory(args ...string) error {
 		fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE")
 	}
 
-	for _, out := range outs {
+	for _, out := range outs.Data {
+		outID := out.Get("ID")
 		if !*quiet {
 			if *noTrunc {
-				fmt.Fprintf(w, "%s\t", out.ID)
+				fmt.Fprintf(w, "%s\t", outID)
 			} else {
-				fmt.Fprintf(w, "%s\t", utils.TruncateID(out.ID))
+				fmt.Fprintf(w, "%s\t", utils.TruncateID(outID))
 			}
 
-			fmt.Fprintf(w, "%s ago\t", utils.HumanDuration(time.Now().UTC().Sub(time.Unix(out.Created, 0))))
+			fmt.Fprintf(w, "%s ago\t", utils.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))))
 
 			if *noTrunc {
-				fmt.Fprintf(w, "%s\t", out.CreatedBy)
+				fmt.Fprintf(w, "%s\t", out.Get("CreatedBy"))
 			} else {
-				fmt.Fprintf(w, "%s\t", utils.Trunc(out.CreatedBy, 45))
+				fmt.Fprintf(w, "%s\t", utils.Trunc(out.Get("CreatedBy"), 45))
 			}
-			fmt.Fprintf(w, "%s\n", utils.HumanSize(out.Size))
+			fmt.Fprintf(w, "%s\n", utils.HumanSize(out.GetInt64("Size")))
 		} else {
 			if *noTrunc {
-				fmt.Fprintln(w, out.ID)
+				fmt.Fprintln(w, outID)
 			} else {
-				fmt.Fprintln(w, utils.TruncateID(out.ID))
+				fmt.Fprintln(w, utils.TruncateID(outID))
 			}
 		}
 	}

docs/sources/api/docker_remote_api.rst

@@ -26,15 +26,34 @@ Docker Remote API
 2. Versions
 ===========
 
-The current version of the API is 1.8
+The current version of the API is 1.9
 
 Calling /images/<name>/insert is the same as calling
-/v1.8/images/<name>/insert
+/v1.9/images/<name>/insert
 
 You can still call an old version of the api using
 /v1.0/images/<name>/insert
 
 
+v1.9
+****
+
+Full Documentation
+------------------
+
+:doc:`docker_remote_api_v1.9`
+
+What's new
+----------
+
+.. http:get:: /images/json
+
+   **New!** This endpoint now returns a list of json message, like the events endpoint
+
+.. http:get:: /images/(name)/history
+
+   **New!** This endpoint now returns a list of json message, like the events endpoint
+
 v1.8
 ****
 

server.go

@@ -131,6 +131,10 @@ func jobInitApi(job *engine.Job) engine.Status {
 		job.Error(err)
 		return engine.StatusErr
 	}
+	if err := job.Eng.Register("history", srv.ImageHistory); err != nil {
+		job.Error(err)
+		return engine.StatusErr
+	}
 	return engine.StatusOK
 }
 
@@ -695,10 +699,16 @@ func (srv *Server) DockerInfo(job *engine.Job) engine.Status {
 	return engine.StatusOK
 }
 
-func (srv *Server) ImageHistory(name string) ([]APIHistory, error) {
+func (srv *Server) ImageHistory(job *engine.Job) engine.Status {
+	if n := len(job.Args); n != 1 {
+		job.Errorf("Usage: %s IMAGE", job.Name)
+		return engine.StatusErr
+	}
+	name := job.Args[0]
 	image, err := srv.runtime.repositories.LookupImage(name)
 	if err != nil {
-		return nil, err
+		job.Error(err)
+		return engine.StatusErr
 	}
 
 	lookupMap := make(map[string][]string)
@@ -712,19 +722,23 @@ func (srv *Server) ImageHistory(name string) ([]APIHistory, error) {
 		}
 	}
 
-	outs := []APIHistory{} //produce [] when empty instead of 'null'
+	outs := engine.NewTable("Created", 0)
 	err = image.WalkHistory(func(img *Image) error {
-		var out APIHistory
-		out.ID = img.ID
-		out.Created = img.Created.Unix()
-		out.CreatedBy = strings.Join(img.ContainerConfig.Cmd, " ")
-		out.Tags = lookupMap[img.ID]
-		out.Size = img.Size
-		outs = append(outs, out)
+		out := &engine.Env{}
+		out.Set("ID", img.ID)
+		out.SetInt64("Created", img.Created.Unix())
+		out.Set("CreatedBy", strings.Join(img.ContainerConfig.Cmd, " "))
+		out.SetList("Tags", lookupMap[img.ID])
+		out.SetInt64("Size", img.Size)
+		outs.Add(out)
 		return nil
 	})
-	return outs, nil
-
+	outs.ReverseSort()
+	if _, err := outs.WriteTo(job.Stdout); err != nil {
+		job.Errorf("%s", err)
+		return engine.StatusErr
+	}
+	return engine.StatusOK
 }
 
 func (srv *Server) ContainerTop(name, psArgs string) (*APITop, error) {