Add annotations to list and state output

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

Author: crosbymichael

libcontainer/specconv/spec_linux.go

@@ -165,14 +165,16 @@ func CreateLibcontainerConfig(opts *CreateOpts) (*configs.Config, error) {
 	if !filepath.IsAbs(rootfsPath) {
 		rootfsPath = filepath.Join(cwd, rootfsPath)
 	}
+	labels := []string{}
+	for k, v := range spec.Annotations {
+		labels = append(labels, fmt.Sprintf("%s=%s", k, v))
+	}
 	config := &configs.Config{
 		Rootfs:      rootfsPath,
 		NoPivotRoot: opts.NoPivotRoot,
 		Readonlyfs:  spec.Root.Readonly,
 		Hostname:    spec.Hostname,
-		Labels: []string{
-			"bundle=" + cwd,
-		},
+		Labels:      append(labels, fmt.Sprintf("bundle=%s", cwd)),
 	}
 
 	exists := false

libcontainer/utils/utils.go

@@ -100,3 +100,22 @@ func SearchLabels(labels []string, query string) string {
 	}
 	return ""
 }
+
+// Annotations returns the bundle path and user defined annotations from the
+// libcontianer state.  We need to remove the bundle because that is a label
+// added by libcontainer.
+func Annotations(labels []string) (bundle string, userAnnotations map[string]string) {
+	userAnnotations = make(map[string]string)
+	for _, l := range labels {
+		parts := strings.SplitN(l, "=", 2)
+		if len(parts) < 2 {
+			continue
+		}
+		if parts[0] == "bundle" {
+			bundle = parts[1]
+		} else {
+			userAnnotations[parts[0]] = parts[1]
+		}
+	}
+	return
+}

list.go

@@ -31,6 +31,8 @@ type containerState struct {
 	Bundle string `json:"bundle"`
 	// Created is the unix timestamp for the creation time of the container in UTC
 	Created time.Time `json:"created"`
+	// Annotations is the user defined annotations added to the config.
+	Annotations map[string]string `json:"annotations,omitempty"`
 }
 
 var listCommand = cli.Command{
@@ -116,12 +118,15 @@ func getContainers(context *cli.Context) ([]containerState, error) {
 			if err != nil {
 				return nil, err
 			}
+			bundle, annotations := utils.Annotations(state.Config.Labels)
 			s = append(s, containerState{
 				ID:             state.BaseState.ID,
 				InitProcessPid: state.BaseState.InitProcessPid,
 				Status:         containerStatus.String(),
-				Bundle:         utils.SearchLabels(state.Config.Labels, "bundle"),
-				Created:        state.BaseState.Created})
+				Bundle:         bundle,
+				Created:        state.BaseState.Created,
+				Annotations:    annotations,
+			})
 		}
 	}
 	return s, nil

state.go

@@ -30,6 +30,8 @@ type cState struct {
 	Status string `json:"status"`
 	// Created is the unix timestamp for the creation time of the container in UTC
 	Created time.Time `json:"created"`
+	// Annotations is the user defined annotations added to the config.
+	Annotations map[string]string `json:"annotations,omitempty"`
 }
 
 var stateCommand = cli.Command{
@@ -53,14 +55,17 @@ instance of a container.`,
 		if err != nil {
 			return err
 		}
+		bundle, annotations := utils.Annotations(state.Config.Labels)
 		cs := cState{
 			Version:        state.BaseState.Config.Version,
 			ID:             state.BaseState.ID,
 			InitProcessPid: state.BaseState.InitProcessPid,
 			Status:         containerStatus.String(),
-			Bundle:         utils.SearchLabels(state.Config.Labels, "bundle"),
+			Bundle:         bundle,
 			Rootfs:         state.BaseState.Config.Rootfs,
-			Created:        state.BaseState.Created}
+			Created:        state.BaseState.Created,
+			Annotations:    annotations,
+		}
 		data, err := json.MarshalIndent(cs, "", "  ")
 		if err != nil {
 			return err