demo

fsnotify-demo/demo/demo.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+
+	"github.com/fsnotify/fsnotify"
+)
+
+func main() {
+	watcher, err := fsnotify.NewWatcher()
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer watcher.Close()
+
+	ctx, cancel := context.WithCancel(context.Background())
+
+	go func() {
+		for {
+			select {
+			case event, ok := <-watcher.Events:
+				if !ok {
+					return
+				}
+
+				log.Println("event:", event)
+				if event.Has(fsnotify.Create) {
+					log.Println("created file:", event.Name)
+				}
+			case err, ok := <-watcher.Errors:
+				if !ok {
+					return
+				}
+				log.Println("error:", err)
+			case <-ctx.Done():
+				return
+			}
+		}
+	}()
+
+	if err = watcher.Add("/home/yono/watchdir"); err != nil {
+		log.Fatal(err)
+	}
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+
+	<-c
+
+	cancel()
+}