feat: patch once and restore probe by last user exit

pkg/controlplane/watcher.go

@@ -2,6 +2,7 @@ package controlplane
 
 import (
 	"log"
+	"time"
 
 	"github.com/fsnotify/fsnotify"
 )
@@ -25,44 +26,45 @@ func Watch(directory string, notifyCh chan<- NotifyMessage) {
 		log.Fatal(err)
 	}
 	defer watcher.Close()
-
-	done := make(chan bool)
-	go func() {
-		for {
-			select {
-			case event, ok := <-watcher.Events:
-				if !ok {
-					return
-				}
-				if event.Op&fsnotify.Write == fsnotify.Write {
-					notifyCh <- NotifyMessage{
-						Operation: Modify,
-						FilePath:  event.Name,
-					}
-				} else if event.Op&fsnotify.Create == fsnotify.Create {
-					notifyCh <- NotifyMessage{
-						Operation: Create,
-						FilePath:  event.Name,
-					}
-				} else if event.Op&fsnotify.Remove == fsnotify.Remove {
-					notifyCh <- NotifyMessage{
-						Operation: Remove,
-						FilePath:  event.Name,
-					}
-				}
-
-			case err, ok := <-watcher.Errors:
-				if !ok {
-					return
-				}
-				log.Println("error:", err)
-			}
-		}
-	}()
-
 	err = watcher.Add(directory)
 	if err != nil {
 		log.Fatal(err)
 	}
-	<-done
+
+	for {
+		select {
+		case event, ok := <-watcher.Events:
+			if !ok {
+				return
+			}
+			if event.Op&fsnotify.Write == fsnotify.Write {
+				notifyCh <- NotifyMessage{
+					Operation: Modify,
+					FilePath:  event.Name,
+				}
+			} else if event.Op&fsnotify.Create == fsnotify.Create {
+				notifyCh <- NotifyMessage{
+					Operation: Create,
+					FilePath:  event.Name,
+				}
+			} else if event.Op&fsnotify.Remove == fsnotify.Remove {
+				notifyCh <- NotifyMessage{
+					Operation: Remove,
+					FilePath:  event.Name,
+				}
+			}
+
+		case err, ok := <-watcher.Errors:
+			if !ok {
+				return
+			}
+			log.Println("error:", err)
+
+		case <-time.Tick(time.Second * 3):
+			notifyCh <- NotifyMessage{
+				Operation: Remove,
+				FilePath:  directory,
+			}
+		}
+	}
 }