[minor] rename back meta action into extended action

src/mig/action.go

@@ -51,12 +51,12 @@ import (
 // a MetaAction is a json object that extends an Action with
 // additional parameters. It is used to track the completion
 // of an action on agents.
-type MetaAction struct {
 	Action                                                          Action
 	Status                                                          string
 	StartTime, FinishTime, LastUpdateTime                           time.Time
 	CommandIDs                                                      []uint64
 	CmdCompleted, CmdSucceeded, CmdCancelled, CmdFailed, CmdTimeOut int
+type ExtendedAction struct {
 }
 
 // an Action is the json object that is created by an investigator

src/mig/scheduler/flow.go

@@ -84,7 +84,7 @@ import (
 
 // Fly moves an action file to the InFlight directory and
 // write it to database
-func flyAction(ctx Context, ea mig.MetaAction, origin string) (err error) {
+func flyAction(ctx Context, ea mig.ExtendedAction, origin string) (err error) {
 	defer func() {
 		if e := recover(); e != nil {
 			err = fmt.Errorf("flyAction() -> %v", e)

src/mig/scheduler/scheduler.go

@@ -292,7 +292,7 @@ func watchDirectories(watcher *fsnotify.Watcher, ctx Context) {
 // the action from the directory, parse it, retrieve a list of targets from
 // the backend database, and create individual command for each target.
 func processNewAction(actionPath string, ctx Context) (err error) {
-	var ea mig.MetaAction
+	var ea mig.ExtendedAction
 	defer func() {
 		if e := recover(); e != nil {
 			err = fmt.Errorf("processNewAction() -> %v", e)
@@ -584,7 +584,7 @@ func updateAction(cmdPath string, ctx Context) (err error) {
 	}
 
 	// use the action ID from the command file to get the action from the database
-	var eas []mig.MetaAction
+	var eas []mig.ExtendedAction
 	actionCursor := ctx.DB.Col.Action.Find(bson.M{"action.id": cmd.Action.ID}).Iter()
 	err = actionCursor.All(&eas)
 	if err != nil {