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conf.go
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conf.go
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// Copyright 2020 Douyu
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package conf
import (
"log"
"time"
"github.com/douyu/jupiter/pkg/util/xgo"
"github.com/fsnotify/fsnotify"
)
// AppConf ...
type AppConf map[string]interface{}
// AppConfScanner ...
type AppConfScanner struct {
dirPath string
stop chan struct{}
chanAppConf chan AppConf
}
// NewScanner new app config scanner
func NewScanner(dirPath string) *AppConfScanner {
return &AppConfScanner{
dirPath: dirPath,
stop: make(chan struct{}),
chanAppConf: make(chan AppConf, 100),
}
}
// Start ...
func (sc *AppConfScanner) Start() error {
xgo.DelayGo(time.Second*5, sc.watch)
return nil
}
// Close ...
func (sc *AppConfScanner) Close() error {
sc.stop <- struct{}{}
return nil
}
// C ...
func (sc *AppConfScanner) C() <-chan AppConf {
return sc.chanAppConf
}
// Scan ...
func (sc *AppConfScanner) Scan() {
}
// watch ...
func (sc *AppConfScanner) watch() {
watcher, err := fsnotify.NewWatcher()
if err != nil {
panic(err)
}
defer watcher.Close()
err = watcher.Add(sc.dirPath)
if err != nil {
log.Fatal(err)
}
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)
case <-sc.stop:
return
}
}
}