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main.go
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main.go
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package watch
import (
"fmt"
"sync"
"github.com/oidc-proxy-ecosystem/oidc-proxy/logger"
"github.com/fsnotify/fsnotify"
"github.com/pkg/errors"
)
var (
ErrFileNotFound = errors.New("No such file or directory")
)
type Watcher interface {
Watch(watcher *fsnotify.Watcher) error
Load() error
}
type Watch struct {
mu sync.RWMutex
watcher *fsnotify.Watcher
watching chan bool
log logger.ILogger
Watching Watcher
}
func New(log logger.ILogger) (*Watch, error) {
if watcher, err := fsnotify.NewWatcher(); err != nil {
return nil, errors.Wrap(err, "")
} else {
return &Watch{
log: log,
watcher: watcher,
}, nil
}
}
func (w *Watch) Watch() error {
if err := w.Watching.Watch(w.watcher); err != nil {
return errors.Wrap(err, "")
}
if err := w.Load(); err != nil {
w.log.Error("ファイルロードエラー: %v", err)
}
w.log.Info("監視を開始します。")
w.watching = make(chan bool)
go w.Run()
return nil
}
func (w *Watch) Load() error {
w.mu.Lock()
defer w.mu.Unlock()
return w.Watching.Load()
}
func (w *Watch) Run() {
loop:
for {
select {
case <-w.watching:
break loop
case event := <-w.watcher.Events:
w.log.Info(fmt.Sprintf("監視イベント: %v", event))
if err := w.Load(); err != nil {
w.log.Error(fmt.Sprintf("ファイルロードエラー: %v", err))
}
case err := <-w.watcher.Errors:
w.log.Error(fmt.Sprintf("監視ファイルにエラーが発生しました。: %v", err))
}
}
w.log.Info("ファイル監視を終了します。")
w.watcher.Close()
}
func (w *Watch) Stop() {
w.watching <- false
}