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service.go
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service.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"
"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"
"k8s.io/apimachinery/pkg/labels"
)
//ServiceInfo wrapper for BCSService
type ServiceInfo struct {
data *commtypes.BcsService
syncTime int64
reportTime int64
}
//NewServiceWatch create watch for Service
func NewServiceWatch(cxt context.Context, informer bkbcsv2.BcsServiceInformer, reporter cluster.Reporter) *ServiceWatch {
keyFunc := func(data interface{}) (string, error) {
dataType, ok := data.(*ServiceInfo)
if !ok {
return "", fmt.Errorf("SchedulerMeta type Assert failed")
}
return dataType.data.ObjectMeta.NameSpace + "." + dataType.data.ObjectMeta.Name, nil
}
return &ServiceWatch{
report: reporter,
cancelCxt: cxt,
informer: informer,
dataCache: cache.NewCache(keyFunc),
}
}
//ServiceWatch watch all event for Service and store in local cache
type ServiceWatch 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.BcsServiceInformer
}
//Work list all Service data periodically
func (watch *ServiceWatch) Work() {
blog.Infof("ServiceWatch start work")
watch.ProcessAllServices()
tick := time.NewTicker(8 * time.Second)
defer tick.Stop()
for {
select {
case <-watch.cancelCxt.Done():
blog.Infof("ServiceWatch asked to exit")
return
case <-tick.C:
blog.V(3).Infof("ServiceWatch is running")
watch.ProcessAllServices()
}
}
}
//ProcessAllServices handle all namespace service
func (watch *ServiceWatch) ProcessAllServices() error {
currTime := time.Now().Unix()
blog.V(3).Infof("sync all services, currTime(%d)", currTime)
v2Svc, err := watch.informer.Lister().List(labels.Everything())
if err != nil {
blog.Errorf("list configmaps error %s", err.Error())
return err
}
var numNode, numDel int
for _, svc := range v2Svc {
numNode++
service := &svc.Spec.BcsService
key := service.ObjectMeta.NameSpace + "." + service.ObjectMeta.Name
cacheData, exist, err := watch.dataCache.GetByKey(key)
if err != nil {
blog.Error("get service %s from cache return err:%s", key, err.Error())
continue
}
if exist == true {
cacheDataInfo, ok := cacheData.(*ServiceInfo)
if !ok {
blog.Error("convert cachedata to ServiceInfo fail, key(%s)", key)
continue
}
blog.V(3).Infof("service %s is in cache, update sync time(%d)", key, currTime)
//watch.UpdateEvent(cacheDataInfo.data, data)
if reflect.DeepEqual(cacheDataInfo.data, service) {
if cacheDataInfo.reportTime > currTime {
cacheDataInfo.reportTime = currTime
}
if currTime-cacheDataInfo.reportTime > 180 {
blog.Info("service %s data not changed, but long time not report, do report", key)
watch.UpdateEvent(cacheDataInfo.data, service)
cacheDataInfo.reportTime = currTime
}
} else {
blog.Info("service %s data changed, do report", key)
watch.UpdateEvent(cacheDataInfo.data, service)
cacheDataInfo.reportTime = currTime
}
cacheDataInfo.syncTime = currTime
cacheDataInfo.data = service
} else {
blog.Info("service %s is not in cache, add, time(%d)", key, currTime)
watch.AddEvent(service)
dataInfo := new(ServiceInfo)
dataInfo.data = service
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 service %s", key)
cacheData, exist, err := watch.dataCache.GetByKey(key)
if err != nil {
blog.Error("service %s in cache keylist, but get return err:%s", err.Error())
continue
}
if exist == false {
blog.Error("service %s in cache keylist, but get return not exist", key)
continue
}
cacheDataInfo, ok := cacheData.(*ServiceInfo)
if !ok {
blog.Error("convert cachedata to ServiceInfo fail, key(%s)", key)
continue
}
if cacheDataInfo.syncTime != currTime {
numDel++
blog.Info("service %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 services from etcd, delete %d cache services", numNode, numDel)
return nil
}
//AddEvent call when data added
func (watch *ServiceWatch) AddEvent(obj interface{}) {
serviceData, ok := obj.(*commtypes.BcsService)
if !ok {
blog.Error("can not convert object to BcsService in AddEvent, object %v", obj)
return
}
blog.Info("EVENT:: Add Event for BcsService %s.%s", serviceData.ObjectMeta.NameSpace, serviceData.ObjectMeta.Name)
data := &types.BcsSyncData{
DataType: "Service",
Action: "Add",
Item: obj,
}
if err := watch.report.ReportData(data); err != nil {
cluster.SyncTotal.WithLabelValues(cluster.DataTypeSvr, types.ActionAdd, cluster.SyncFailure).Inc()
} else {
cluster.SyncTotal.WithLabelValues(cluster.DataTypeSvr, types.ActionAdd, cluster.SyncSuccess).Inc()
}
}
//DeleteEvent when delete
func (watch *ServiceWatch) DeleteEvent(obj interface{}) {
serviceData, ok := obj.(*commtypes.BcsService)
if !ok {
blog.Error("can not convert object to BcsService in DeleteEvent, object %v", obj)
return
}
blog.Info("EVENT:: Delete Event for BcsService %s.%s", serviceData.ObjectMeta.NameSpace, serviceData.ObjectMeta.Name)
//report to cluster
data := &types.BcsSyncData{
DataType: "Service",
Action: "Delete",
Item: obj,
}
if err := watch.report.ReportData(data); err != nil {
cluster.SyncTotal.WithLabelValues(cluster.DataTypeSvr, types.ActionDelete, cluster.SyncFailure).Inc()
} else {
cluster.SyncTotal.WithLabelValues(cluster.DataTypeSvr, types.ActionDelete, cluster.SyncSuccess).Inc()
}
}
//UpdateEvent when update
func (watch *ServiceWatch) UpdateEvent(old, cur interface{}) {
serviceData, ok := cur.(*commtypes.BcsService)
if !ok {
blog.Error("can not convert object to BcsService in UpdateEvent, object %v", cur)
return
}
//if reflect.DeepEqual(old, cur) {
// blog.V(3).Infof("BcsService %s.%s data do not changed", serviceData.ObjectMeta.NameSpace, serviceData.ObjectMeta.Name)
// return
//}
blog.V(3).Infof("EVENT:: Update Event for BcsService %s.%s", serviceData.ObjectMeta.NameSpace, serviceData.ObjectMeta.Name)
//report to cluster
data := &types.BcsSyncData{
DataType: "Service",
Action: "Update",
Item: cur,
}
if err := watch.report.ReportData(data); err != nil {
cluster.SyncTotal.WithLabelValues(cluster.DataTypeSvr, types.ActionUpdate, cluster.SyncFailure).Inc()
} else {
cluster.SyncTotal.WithLabelValues(cluster.DataTypeSvr, types.ActionUpdate, cluster.SyncSuccess).Inc()
}
}