Implemented size parameter on GetContainer

Signed-off-by: Steve Taylor <steven@taylormuff.co.uk>

pkg/api/handlers/generic/containers.go

@@ -101,6 +101,20 @@ func ListContainers(w http.ResponseWriter, r *http.Request) {
 
 func GetContainer(w http.ResponseWriter, r *http.Request) {
 	runtime := r.Context().Value("runtime").(*libpod.Runtime)
+	decoder := r.Context().Value("decoder").(*schema.Decoder)
+	query := struct {
+		Size bool `schema:"size"`
+	}{
+		// override any golang type defaults
+	}
+
+	// Default Size to false
+	query.Size = false
+
+	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
+		utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
+		return
+	}
 
 	name := utils.GetName(r)
 	ctnr, err := runtime.LookupContainer(name)
@@ -108,7 +122,7 @@ func GetContainer(w http.ResponseWriter, r *http.Request) {
 		utils.ContainerNotFound(w, name, err)
 		return
 	}
-	api, err := handlers.LibpodToContainerJSON(ctnr)
+	api, err := handlers.LibpodToContainerJSON(ctnr, query.Size)
 	if err != nil {
 		utils.InternalServerError(w, err)
 		return

pkg/api/handlers/types.go

@@ -402,7 +402,12 @@ func LibpodToContainer(l *libpod.Container, infoData []define.InfoData, sz bool)
 	}, nil
 }
 
-func LibpodToContainerJSON(l *libpod.Container) (*docker.ContainerJSON, error) {
+func LibpodToContainerJSON(l *libpod.Container, sz bool) (*docker.ContainerJSON, error) {
+	var (
+		sizeRootFs int64
+		sizeRW     int64
+	)
+
 	_, imageName := l.Image()
 	inspect, err := l.Inspect(true)
 	if err != nil {
@@ -439,6 +444,18 @@ func LibpodToContainerJSON(l *libpod.Container) (*docker.ContainerJSON, error) {
 		return nil, err
 	}
 
+	if sz {
+		if sizeRW, err = l.RWSize(); err != nil {
+			return nil, err
+		}
+		if sizeRootFs, err = l.RootFsSize(); err != nil {
+			return nil, err
+		}
+	} else {
+		sizeRW = 0
+		sizeRootFs = 0
+	}
+
 	cb := docker.ContainerJSONBase{
 		ID:              l.ID(),
 		Created:         l.CreatedTime().String(),
@@ -461,8 +478,8 @@ func LibpodToContainerJSON(l *libpod.Container) (*docker.ContainerJSON, error) {
 		ExecIDs:         inspect.ExecIDs,
 		HostConfig:      &hc,
 		GraphDriver:     graphDriver,
-		SizeRw:          inspect.SizeRw,
-		SizeRootFs:      &inspect.SizeRootFs,
+		SizeRw:          &sizeRW,
+		SizeRootFs:      &sizeRootFs,
 	}
 
 	stopTimeout := int(l.StopTimeout())