mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-11-30 10:59:32 +08:00
89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
// Licensed to the LF AI & Data foundation under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you 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 config
|
|
|
|
import (
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/milvus-io/milvus/internal/log"
|
|
"go.uber.org/zap"
|
|
)
|
|
|
|
type refresher struct {
|
|
refreshInterval time.Duration
|
|
intervalDone chan bool
|
|
intervalInitOnce sync.Once
|
|
eh EventHandler
|
|
|
|
fetchFunc func() error
|
|
}
|
|
|
|
func newRefresher(interval time.Duration, fetchFunc func() error) refresher {
|
|
return refresher{
|
|
refreshInterval: interval,
|
|
intervalDone: make(chan bool, 1),
|
|
fetchFunc: fetchFunc,
|
|
}
|
|
}
|
|
|
|
func (r refresher) start(name string) {
|
|
if r.refreshInterval > 0 {
|
|
r.intervalInitOnce.Do(func() {
|
|
go r.refreshPeriodically(name)
|
|
})
|
|
}
|
|
}
|
|
|
|
func (r refresher) stop() {
|
|
r.intervalDone <- true
|
|
}
|
|
|
|
func (r refresher) refreshPeriodically(name string) {
|
|
ticker := time.NewTicker(r.refreshInterval)
|
|
defer ticker.Stop()
|
|
log.Info("start refreshing configurations", zap.String("source", name))
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
err := r.fetchFunc()
|
|
if err != nil {
|
|
log.Error("can not pull configs", zap.Error(err))
|
|
r.intervalDone <- true
|
|
}
|
|
case <-r.intervalDone:
|
|
log.Info("stop refreshing configurations")
|
|
return
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
func (r refresher) fireEvents(name string, source, target map[string]string) error {
|
|
events, err := PopulateEvents(name, source, target)
|
|
if err != nil {
|
|
log.Warn("generating event error", zap.Error(err))
|
|
return err
|
|
}
|
|
//Generate OnEvent Callback based on the events created
|
|
if r.eh != nil {
|
|
for _, e := range events {
|
|
r.eh.OnEvent(e)
|
|
}
|
|
}
|
|
return nil
|
|
}
|