add wait many change for watcher

conf/conf.go

@@ -8,6 +8,7 @@ import (
 	"log"
 	"os"
 	"path"
+	"time"
 )
 
 type Conf struct {
@@ -63,10 +64,19 @@ func (p *Conf) Watch(filePath string, reload func()) error {
 		return fmt.Errorf("new watcher error: %s", err)
 	}
 	go func() {
+		var pre time.Time
 		defer watcher.Close()
 		for {
 			select {
-			case <-watcher.Events:
+			case e := <-watcher.Events:
+				if e.Has(fsnotify.Chmod) {
+					continue
+				}
+				if pre.Add(1 * time.Second).After(time.Now()) {
+					continue
+				}
+				time.Sleep(2 * time.Second)
+				pre = time.Now()
 				log.Println("config dir changed, reloading...")
 				*p = *New()
 				err := p.LoadFromPath(filePath)

conf/conf_test.go

@@ -1,8 +1,19 @@
 package conf
 
-import "testing"
+import (
+	"log"
+	"testing"
+)
 
 func TestConf_LoadFromPath(t *testing.T) {
 	c := New()
 	t.Log(c.LoadFromPath("../example/config.yml.example"), c.NodesConfig[0].ControllerConfig.LimitConfig.IPLimit)
 }
+
+func TestConf_Watch(t *testing.T) {
+	c := New()
+	c.Watch("../example/config.yml.example", func() {
+		log.Println(1)
+	})
+	select {}
+}