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secret.go
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secret.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"
bkbcsv2 "github.com/Tencent/bk-bcs/bcs-mesos/kubebkbcsv2/client/informers/externalversions/bkbcs/v2"
"github.com/Tencent/bk-bcs/bcs-runtime/bcs-mesos/bcs-mesos-watch/cluster"
"github.com/Tencent/bk-bcs/bcs-runtime/bcs-mesos/bcs-mesos-watch/types"
"golang.org/x/net/context"
"k8s.io/apimachinery/pkg/labels"
)
// SecretInfo wrapper for BCSSecret
type SecretInfo struct {
data *commtypes.BcsSecret
syncTime int64
reportTime int64
}
// NewSecretWatch create SecretWatch for data synchronization
func NewSecretWatch(cxt context.Context, informer bkbcsv2.BcsSecretInformer, reporter cluster.Reporter) *SecretWatch {
keyFunc := func(data interface{}) (string, error) {
dataType, ok := data.(*SecretInfo)
if !ok {
return "", fmt.Errorf("SchedulerMeta type Assert failed")
}
return dataType.data.ObjectMeta.NameSpace + "." + dataType.data.ObjectMeta.Name, nil
}
return &SecretWatch{
report: reporter,
cancelCxt: cxt,
dataCache: cache.NewCache(keyFunc),
informer: informer,
}
}
// SecretWatch watch all secret data and store in local cache
type SecretWatch 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.BcsSecretInformer
}
// Work list all namespace secret periodically
func (watch *SecretWatch) Work() {
blog.Infof("SecretWatch start work")
watch.ProcessAllSecrets()
tick := time.NewTicker(10 * time.Second)
defer tick.Stop()
for {
select {
case <-watch.cancelCxt.Done():
blog.Infof("SecretWatch asked to exit")
return
case <-tick.C:
blog.V(3).Infof("SecretWatch is running")
watch.ProcessAllSecrets()
}
}
}
// ProcessAllSecrets handle all namespaces data
func (watch *SecretWatch) ProcessAllSecrets() error {
currTime := time.Now().Unix()
blog.V(3).Infof("sync all secrets, currTime(%d)", currTime)
v2Secs, 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 _, sec := range v2Secs {
numNode++
secret := &sec.Spec.BcsSecret
key := secret.ObjectMeta.NameSpace + "." + secret.ObjectMeta.Name
cacheData, exist, err := watch.dataCache.GetByKey(key)
if err != nil {
blog.Error("get secret %s from cache return err:%s", key, err.Error())
continue
}
if exist == true {
cacheDataInfo, ok := cacheData.(*SecretInfo)
if !ok {
blog.Error("convert cachedata to SecretInfo fail, key(%s)", key)
continue
}
blog.V(3).Infof("secret %s is in cache, update sync time(%d)", key, currTime)
// watch.UpdateEvent(cacheDataInfo.data, data)
if reflect.DeepEqual(cacheDataInfo.data, secret) {
if cacheDataInfo.reportTime > currTime {
cacheDataInfo.reportTime = currTime
}
if currTime-cacheDataInfo.reportTime > 180 {
blog.Info("secret %s data not changed, but long time not report, do report", key)
watch.UpdateEvent(cacheDataInfo.data, secret)
cacheDataInfo.reportTime = currTime
}
} else {
blog.Info("secret %s data changed, do report", key)
watch.UpdateEvent(cacheDataInfo.data, secret)
cacheDataInfo.reportTime = currTime
}
cacheDataInfo.syncTime = currTime
cacheDataInfo.data = secret
} else {
blog.Info("secret %s is not in cache, add, time(%d)", key, currTime)
watch.AddEvent(secret)
dataInfo := new(SecretInfo)
dataInfo.data = secret
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 secret %s", key)
cacheData, exist, err := watch.dataCache.GetByKey(key)
if err != nil {
blog.Error("secret %s in cache keylist, but get return err:%s", err.Error())
continue
}
if exist == false {
blog.Error("secret %s in cache keylist, but get return not exist", key)
continue
}
cacheDataInfo, ok := cacheData.(*SecretInfo)
if !ok {
blog.Error("convert cachedata to SecretInfo fail, key(%s)", key)
continue
}
if cacheDataInfo.syncTime != currTime {
numDel++
blog.Info("secret %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 secrets from etcd, delete %d cache secrets", numNode, numDel)
return nil
}
// AddEvent call when data added
func (watch *SecretWatch) AddEvent(obj interface{}) {
secretData, ok := obj.(*commtypes.BcsSecret)
if !ok {
blog.Error("can not convert object to BcsSecret in AddEvent, object %v", obj)
return
}
blog.Info("EVENT:: Add Event for BcsSecret %s.%s", secretData.ObjectMeta.NameSpace, secretData.ObjectMeta.Name)
data := &types.BcsSyncData{
DataType: "Secret",
Action: "Add",
Item: obj,
}
watch.report.ReportData(data)
}
// DeleteEvent when delete
func (watch *SecretWatch) DeleteEvent(obj interface{}) {
secretData, ok := obj.(*commtypes.BcsSecret)
if !ok {
blog.Error("can not convert object to BcsSecret in DeleteEvent, object %v", obj)
return
}
blog.Info("EVENT:: Delete Event for BcsSecret %s.%s", secretData.ObjectMeta.NameSpace, secretData.ObjectMeta.Name)
// report to cluster
data := &types.BcsSyncData{
DataType: "Secret",
Action: "Delete",
Item: obj,
}
watch.report.ReportData(data)
}
// UpdateEvent when update
func (watch *SecretWatch) UpdateEvent(old, cur interface{}) {
secretData, ok := cur.(*commtypes.BcsSecret)
if !ok {
blog.Error("can not convert object to BcsSecret in UpdateEvent, object %v", cur)
return
}
blog.V(3).Infof("EVENT:: Update Event for BcsSecret %s.%s", secretData.ObjectMeta.NameSpace,
secretData.ObjectMeta.Name)
data := &types.BcsSyncData{
DataType: "Secret",
Action: "Update",
Item: cur,
}
watch.report.ReportData(data)
}