Add ability to scan snaps (as a source) (#3929)

internal/bus/helpers.go

@@ -36,8 +36,8 @@ func Notify(message string) {
 	})
 }
 
-func StartCatalogerTask(info monitor.GenericTask, size int64, initialStage string) *monitor.CatalogerTaskProgress {
-	t := &monitor.CatalogerTaskProgress{
+func StartCatalogerTask(info monitor.GenericTask, size int64, initialStage string) *monitor.TaskProgress {
+	t := &monitor.TaskProgress{
 		AtomicStage: progress.NewAtomicStage(initialStage),
 		Manual:      progress.NewManual(size),
 	}
@@ -50,3 +50,33 @@ func StartCatalogerTask(info monitor.GenericTask, size int64, initialStage strin
 
 	return t
 }
+
+func StartPullSourceTask(info monitor.GenericTask, size int64, initialStage string) *monitor.TaskProgress {
+	t := &monitor.TaskProgress{
+		AtomicStage: progress.NewAtomicStage(initialStage),
+		Manual:      progress.NewManual(size),
+	}
+
+	Publish(partybus.Event{
+		Type:   event.PullSourceStarted,
+		Source: info,
+		Value:  progress.StagedProgressable(t),
+	})
+
+	return t
+}
+
+func StartIndexingFiles(path string) *monitor.TaskProgress {
+	t := &monitor.TaskProgress{
+		AtomicStage: progress.NewAtomicStage(""),
+		Manual:      progress.NewManual(-1),
+	}
+
+	Publish(partybus.Event{
+		Type:   event.FileIndexingStarted,
+		Source: path,
+		Value:  progress.StagedProgressable(t),
+	})
+
+	return t
+}