mirror of
https://github.com/yunionio/cloudpods.git
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79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
// Copyright 2019 Yunion
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package syncman
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import (
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"fmt"
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"sync/atomic"
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"time"
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"yunion.io/x/jsonutils"
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"yunion.io/x/log"
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"yunion.io/x/onecloud/pkg/appsrv"
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)
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type ISyncClient interface {
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DoSync(first bool) (time.Duration, error)
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NeedSync(dat *jsonutils.JSONDict) bool
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Name() string
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}
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type SSyncManager struct {
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ISyncClient
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lastSync time.Time
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syncTimer *time.Timer
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syncOnce int32
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syncWorkerManager *appsrv.SWorkerManager
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}
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func (manager *SSyncManager) InitSync(client ISyncClient) {
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manager.ISyncClient = client
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manager.syncWorkerManager = appsrv.NewWorkerManagerIgnoreOverflow(fmt.Sprintf("(%s)sync_worker", client.Name()), 1, 1, true, true)
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}
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func (manager *SSyncManager) syncByInterval() error {
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if manager.syncTimer != nil {
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manager.syncTimer.Stop()
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manager.syncTimer = nil
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}
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isFirst := false
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if manager.lastSync.IsZero() {
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isFirst = true
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}
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next, err := manager.DoSync(isFirst)
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if err == nil {
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manager.lastSync = time.Now()
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}
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manager.syncTimer = time.AfterFunc(next, manager.SyncOnce)
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return err
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}
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func (manager *SSyncManager) SyncOnce() {
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log.Debugf("[%s] SyncOnce", manager.Name())
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if atomic.CompareAndSwapInt32(&manager.syncOnce, 0, 1) {
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manager.syncWorkerManager.Run(func() {
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atomic.StoreInt32(&manager.syncOnce, 0)
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manager.syncByInterval()
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}, nil, nil)
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}
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}
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func (manager *SSyncManager) FirstSync() error {
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return manager.syncByInterval()
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}
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