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endpoint.go
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endpoint.go
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/*
* Tencent is pleased to support the open source community by making Blueking Container Service available.
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the MIT License (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* http://opensource.org/licenses/MIT
* 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 etcd
import (
"fmt"
"reflect"
"sync"
"time"
"k8s.io/apimachinery/pkg/labels"
"github.com/Tencent/bk-bcs/bcs-common/common/blog"
commtypes "github.com/Tencent/bk-bcs/bcs-common/common/types"
"github.com/Tencent/bk-bcs/bcs-common/pkg/cache"
"github.com/Tencent/bk-bcs/bcs-mesos/bcs-mesos-watch/cluster"
"github.com/Tencent/bk-bcs/bcs-mesos/bcs-mesos-watch/types"
bkbcsv2 "github.com/Tencent/bk-bcs/bcs-mesos/kubebkbcsv2/client/informers/bkbcs/v2"
"golang.org/x/net/context"
)
//EndpointInfo wrapper for BCSEndpoint
type EndpointInfo struct {
data *commtypes.BcsEndpoint
syncTime int64
reportTime int64
}
//NewEndpointWatch create endpoint watch
func NewEndpointWatch(cxt context.Context, informer bkbcsv2.BcsEndpointInformer, reporter cluster.Reporter) *EndpointWatch {
keyFunc := func(data interface{}) (string, error) {
dataType, ok := data.(*EndpointInfo)
if !ok {
return "", fmt.Errorf("SchedulerMeta type Assert failed")
}
return dataType.data.ObjectMeta.NameSpace + "." + dataType.data.ObjectMeta.Name, nil
}
return &EndpointWatch{
report: reporter,
cancelCxt: cxt,
dataCache: cache.NewCache(keyFunc),
informer: informer,
}
}
//EndpointWatch watch for Endpoint and store all datas to local cache
type EndpointWatch struct {
eventLock sync.Mutex //lock for event
report cluster.Reporter //reporter
cancelCxt context.Context //context for cancel
dataCache cache.Store //cache for all app data
watchPath string
informer bkbcsv2.BcsEndpointInformer
}
//Work handle all Endpoint datas periodically
func (watch *EndpointWatch) Work() {
watch.ProcessAllEndpoints()
tick := time.NewTicker(10 * time.Second)
defer tick.Stop()
for {
select {
case <-watch.cancelCxt.Done():
blog.V(3).Infof("EndpointWatch asked to exit")
return
case <-tick.C:
blog.V(3).Infof("EndpointWatch is running")
watch.ProcessAllEndpoints()
}
}
}
//ProcessAllEndpoints handle all namespace Endpoint data
func (watch *EndpointWatch) ProcessAllEndpoints() error {
currTime := time.Now().Unix()
blog.V(3).Infof("sync all endpoints, currTime(%d)", currTime)
v2Endpoints, err := watch.informer.Lister().List(labels.Everything())
if err != nil {
blog.Errorf("list bcsendpoints error %s", err.Error())
return err
}
var numNode, numDel int
for _, end := range v2Endpoints {
numNode++
data := &end.Spec.BcsEndpoint
key := data.ObjectMeta.NameSpace + "." + data.ObjectMeta.Name
cacheData, exist, err := watch.dataCache.GetByKey(key)
if err != nil {
blog.Error("get EndpointInfo %s from cache return err:%s", key, err.Error())
continue
}
if exist == true {
cacheDataInfo, ok := cacheData.(*EndpointInfo)
if !ok {
blog.Error("convert cachedata to EndpointInfo fail, key(%s)", key)
continue
}
blog.V(3).Infof("endpoint %s is in cache, update sync time(%d)", key, currTime)
//watch.UpdateEvent(cacheDataInfo.data, data)
if reflect.DeepEqual(cacheDataInfo.data, data) {
if cacheDataInfo.reportTime > currTime {
cacheDataInfo.reportTime = currTime
}
if currTime-cacheDataInfo.reportTime > 180 {
blog.Info("endpoint %s data not changed, but long time not report, do report", key)
watch.UpdateEvent(cacheDataInfo.data, data)
cacheDataInfo.reportTime = currTime
}
} else {
blog.Info("endpoint %s data changed, do report", key)
watch.UpdateEvent(cacheDataInfo.data, data)
cacheDataInfo.reportTime = currTime
}
cacheDataInfo.syncTime = currTime
cacheDataInfo.data = data
} else {
blog.Info("endpoint %s is not in cache, add, time(%d)", key, currTime)
watch.AddEvent(data)
dataInfo := new(EndpointInfo)
dataInfo.data = data
dataInfo.syncTime = currTime
dataInfo.reportTime = currTime
watch.dataCache.Add(dataInfo)
}
}
// check cache, create delete events
keyList := watch.dataCache.ListKeys()
for _, key := range keyList {
blog.V(3).Infof("to check cache endpoint %s", key)
cacheData, exist, err := watch.dataCache.GetByKey(key)
if err != nil {
blog.Error("endpoint %s in cache keylist, but get return err:%s", err.Error())
continue
}
if exist == false {
blog.Error("endpoint %s in cache keylist, but get return not exist", key)
continue
}
cacheDataInfo, ok := cacheData.(*EndpointInfo)
if !ok {
blog.Error("convert cachedata to endpointInfo fail, key(%s)", key)
continue
}
if cacheDataInfo.syncTime != currTime {
numDel++
blog.Info("endpoint %s is in cache, but syncTime(%d) != currTime(%d), to delete ",
key, cacheDataInfo.syncTime, currTime)
watch.DeleteEvent(cacheDataInfo.data)
watch.dataCache.Delete(cacheDataInfo)
}
}
blog.Info("sync %d endpoints from etcd, delete %d cache endpoints", numNode, numDel)
return nil
}
//AddEvent call when data added
func (watch *EndpointWatch) AddEvent(obj interface{}) {
endpointData, ok := obj.(*commtypes.BcsEndpoint)
if !ok {
blog.Error("can not convert object to Bcsendpoint in AddEvent, object %v", obj)
return
}
blog.Info("EVENT:: Add Event for Bcsendpoint %s.%s", endpointData.ObjectMeta.NameSpace, endpointData.ObjectMeta.Name)
data := &types.BcsSyncData{
DataType: "Endpoint",
Action: "Add",
Item: obj,
}
watch.report.ReportData(data)
}
//DeleteEvent when delete
func (watch *EndpointWatch) DeleteEvent(obj interface{}) {
endpointData, ok := obj.(*commtypes.BcsEndpoint)
if !ok {
blog.Error("can not convert object to Bcsendpoint in DeleteEvent, object %v", obj)
return
}
blog.Info("EVENT:: Delete Event for Bcsendpoint %s.%s", endpointData.ObjectMeta.NameSpace, endpointData.ObjectMeta.Name)
//report to cluster
data := &types.BcsSyncData{
DataType: "Endpoint",
Action: "Delete",
Item: obj,
}
watch.report.ReportData(data)
}
//UpdateEvent when update
func (watch *EndpointWatch) UpdateEvent(old, cur interface{}) {
endpointData, ok := cur.(*commtypes.BcsEndpoint)
if !ok {
blog.Error("can not convert object to Bcsendpoint in UpdateEvent, object %v", cur)
return
}
//if reflect.DeepEqual(old, cur) {
// blog.V(3).Infof("Bcsendpoint %s.%s data do not changed", endpointData.ObjectMeta.NameSpace, endpointData.ObjectMeta.Name)
// return
//}
blog.V(3).Infof("EVENT:: Update Event for Bcsendpoint %s.%s", endpointData.ObjectMeta.NameSpace, endpointData.ObjectMeta.Name)
//report to cluster
data := &types.BcsSyncData{
DataType: "Endpoint",
Action: "Update",
Item: cur,
}
watch.report.ReportData(data)
}