little-cui commented on a change in pull request #220: SC-49 Pact broker module 
for consumer-driven contract testing
URL: 
https://github.com/apache/incubator-servicecomb-service-center/pull/220#discussion_r158571645
 
 

 ##########
 File path: server/broker/store.go
 ##########
 @@ -0,0 +1,167 @@
+//Copyright 2017 Huawei Technologies Co., Ltd
+//
+//Licensed under the Apache License, Version 2.0 (the "License");
+//you may not use this file except in compliance with the License.
+//You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+//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 broker
+
+import (
+       "sync"
+
+       "github.com/ServiceComb/service-center/pkg/async"
+       "github.com/ServiceComb/service-center/pkg/util"
+       sstore "github.com/ServiceComb/service-center/server/core/backend/store"
+       pb "github.com/ServiceComb/service-center/server/core/proto"
+)
+
+const (
+       PARTICIPANT sstore.StoreType = iota
+       VERSION
+       PACT
+       PACT_VERSION
+       PACT_TAG
+       VERIFICATION
+       PACT_LATEST
+       typeEnd
+)
+
+var TypeNames = []string{
+       PARTICIPANT:  "PARTICIPANT",
+       VERSION:      "VERSION",
+       PACT:         "PACT",
+       PACT_VERSION: "PACT_VERSION",
+       PACT_TAG:     "PACT_TAG",
+       VERIFICATION: "VERIFICATION",
+       PACT_LATEST:  "PACT_LATEST",
+}
+
+var TypeRoots = map[sstore.StoreType]string{
+       PARTICIPANT:  GetBrokerParticipantKey(""),
+       VERSION:      GetBrokerVersionKey(""),
+       PACT:         GetBrokerPactKey(""),
+       PACT_VERSION: GetBrokerPactVersionKey(""),
+       PACT_TAG:     GetBrokerTagKey(""),
+       VERIFICATION: GetBrokerVerificationKey(""),
+       PACT_LATEST:  GetBrokerLatestKey(""),
+}
+
+var store = &BKvStore{}
+
+func Store() *BKvStore {
+       return store
+}
+
+func (s *BKvStore) StoreSize(t sstore.StoreType) int {
+       return 100
+}
+
+func (s *BKvStore) dispatchEvent(t sstore.StoreType, evt *sstore.KvEvent) {
+       s.bindexers[t].OnCacheEvent(evt)
+       select {
+       case <-s.Ready():
+       default:
+               if evt.Action == pb.EVT_CREATE {
+                       evt.Action = pb.EVT_INIT
+               }
+       }
+       sstore.EventProxy(t).OnEvent(evt)
+}
+
+func (s *BKvStore) newStore(t sstore.StoreType, opts 
...sstore.KvCacherCfgOption) {
+       opts = append(opts,
+               sstore.WithKey(TypeRoots[t]),
+               sstore.WithInitSize(s.StoreSize(t)),
+               sstore.WithEventFunc(func(evt *sstore.KvEvent) { 
s.dispatchEvent(t, evt) }),
+       )
+       s.newIndexer(t, sstore.NewKvCacher(opts...))
+}
+
+func (s *BKvStore) store() {
+       for t := sstore.StoreType(0); t != typeEnd; t++ {
+               s.newStore(t)
+       }
+       for _, i := range s.bindexers {
+               <-i.Ready()
+       }
+       util.SafeCloseChan(s.bready)
+
+       util.Logger().Debugf("all indexers are ready")
+}
+
+func init() {
+       store.Initialize()
+
+       //sstore.AddEventHandleFunc(LEASE, store.onLeaseEvent)
+}
+
+type BKvStore struct {
+       *sstore.KvStore
+       bindexers     map[sstore.StoreType]*sstore.Indexer
+       basyncTaskSvc *async.AsyncTaskService
 
 Review comment:
   I think the basyncTaskSvc is no used here.

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