basic reload

helpers/watcher.go

@@ -0,0 +1,75 @@
+package helpers
+
+import (
+	"log"
+
+	"github.com/fsnotify/fsnotify"
+)
+
+type IFileWatcher interface {
+	GetEvents() chan string
+}
+
+type FileWatcher struct {
+	path    []string
+	events  chan string
+	watcher *fsnotify.Watcher
+}
+
+func NewFileWatcher(path []string) (*FileWatcher, error) {
+	fw := &FileWatcher{path: path, events: make(chan string, 48)}
+	err := fw.Watch(path)
+	if err != nil {
+		return nil, err
+	}
+	return fw, nil
+}
+
+func (fw *FileWatcher) Watch(paths []string) error {
+	fw.events = make(chan string, 48)
+
+	watcher, err := fsnotify.NewWatcher()
+	if err != nil {
+		return err
+	}
+	fw.watcher = watcher
+
+	// Start listening for events.
+	go func() {
+		for {
+			select {
+			case event, ok := <-watcher.Events:
+				if !ok {
+					return
+				}
+				log.Println("event:", event)
+				if !event.Has(fsnotify.Chmod) {
+					fw.events <- event.Name
+				}
+			case err, ok := <-watcher.Errors:
+				if !ok {
+					return
+				}
+				log.Println("error:", err)
+			}
+		}
+	}()
+
+	for _, path := range paths {
+		err = watcher.Add(path)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (fw *FileWatcher) GetEvents() chan string {
+	return fw.events
+}
+
+func (fw *FileWatcher) Close() {
+	fw.watcher.Close()
+	close(fw.events)
+}