fsnotify 文件系统通知

Posted 2022-06-29 刘贤松handler

File system notifications for Go  

fsnotify utilizes golang.org/x/sys rather than syscall from the standard library.

跨平台：Windows、Linux、BSD 和 macOS。

Adapter	OS	Status
inotify	Linux 2.6.27 or later, android*	Supported
kqueue	BSD, macOS, ios*	Supported
ReadDirectoryChangesW	Windows	Supported
FSEvents	macOS	Planned
FEN	Solaris 11	In Progress
fanotify	Linux 2.6.37+	Maybe
USN Journals	Windows	Maybe
Polling	All	Maybe

* Android and iOS are untested.

Please see the documentation and consult the FAQ for usage information.

package main

import (
	"log"

	"github.com/fsnotify/fsnotify"
)

func main() 
	watcher, err := fsnotify.NewWatcher()
	if err != nil 
		log.Fatal(err)
	
	defer watcher.Close()

	done := make(chan bool)
	go func() 
		for 
			select 
			case event, ok := <-watcher.Events:
				if !ok 
					return
				
				log.Println("event:", event)
				if event.Op&fsnotify.Write == fsnotify.Write 
					log.Println("modified file:", event.Name)
				
			case err, ok := <-watcher.Errors:
				if !ok 
					return
				
				log.Println("error:", err)
			
		
	()

	err = watcher.Add("/tmp/foo")
	if err != nil 
		log.Fatal(err)
	
	<-done