mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 21:09:06 +08:00
104 lines
2.3 KiB
Go
104 lines
2.3 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package etcdkv
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import (
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"context"
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"sync"
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"time"
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"github.com/milvus-io/milvus/internal/log"
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"go.etcd.io/etcd/clientv3"
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"go.uber.org/zap"
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)
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type EtcdStatsWatcher struct {
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mu sync.RWMutex
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client *clientv3.Client
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helper etcdStatsHelper
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size int
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startTime time.Time
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}
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type etcdStatsHelper struct {
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eventAfterReceive func()
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eventAfterStartWatch func()
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}
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func defaultHelper() etcdStatsHelper {
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return etcdStatsHelper{
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eventAfterReceive: func() {},
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eventAfterStartWatch: func() {},
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}
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}
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func NewEtcdStatsWatcher(client *clientv3.Client) *EtcdStatsWatcher {
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return &EtcdStatsWatcher{
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client: client,
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helper: defaultHelper(),
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}
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}
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func (w *EtcdStatsWatcher) StartBackgroundLoop(ctx context.Context) {
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ch := w.client.Watch(ctx, "", clientv3.WithPrefix(), clientv3.WithCreatedNotify())
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w.mu.Lock()
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w.startTime = time.Now()
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w.mu.Unlock()
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w.helper.eventAfterStartWatch()
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for {
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select {
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case <-ctx.Done():
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log.Debug("etcd stats watcher shutdown")
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return
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case e := <-ch:
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if e.Err() != nil {
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log.Error("etcd stats watcher receive error response", zap.Error(e.Err()))
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continue
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}
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if len(e.Events) == 0 {
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continue
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}
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t := 0
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for _, event := range e.Events {
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if event.Kv.Version == 1 {
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t += len(event.Kv.Key) + len(event.Kv.Value)
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}
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}
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w.mu.Lock()
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w.size += t
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w.mu.Unlock()
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w.helper.eventAfterReceive()
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}
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}
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}
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func (w *EtcdStatsWatcher) GetSize() int {
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w.mu.RLock()
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defer w.mu.RUnlock()
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return w.size
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}
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/*
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func (w *EtcdStatsWatcher) GetStartTime() time.Time {
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w.mu.RLock()
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defer w.mu.RUnlock()
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return w.startTime
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}
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func (w *EtcdStatsWatcher) Reset() {
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w.mu.Lock()
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defer w.mu.Unlock()
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w.size = 0
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w.startTime = time.Now()
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}
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*/
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