[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/etcdserver/apply_v2.go b/vendor/github.com/coreos/etcd/etcdserver/apply_v2.go
new file mode 100644
index 0000000..a49b682
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/etcdserver/apply_v2.go
@@ -0,0 +1,140 @@
+// Copyright 2016 The etcd Authors
+//
+// 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 etcdserver
+
+import (
+ "encoding/json"
+ "path"
+ "time"
+
+ "github.com/coreos/etcd/etcdserver/api"
+ "github.com/coreos/etcd/etcdserver/membership"
+ "github.com/coreos/etcd/pkg/pbutil"
+ "github.com/coreos/etcd/store"
+ "github.com/coreos/go-semver/semver"
+)
+
+// ApplierV2 is the interface for processing V2 raft messages
+type ApplierV2 interface {
+ Delete(r *RequestV2) Response
+ Post(r *RequestV2) Response
+ Put(r *RequestV2) Response
+ QGet(r *RequestV2) Response
+ Sync(r *RequestV2) Response
+}
+
+func NewApplierV2(s store.Store, c *membership.RaftCluster) ApplierV2 {
+ return &applierV2store{store: s, cluster: c}
+}
+
+type applierV2store struct {
+ store store.Store
+ cluster *membership.RaftCluster
+}
+
+func (a *applierV2store) Delete(r *RequestV2) Response {
+ switch {
+ case r.PrevIndex > 0 || r.PrevValue != "":
+ return toResponse(a.store.CompareAndDelete(r.Path, r.PrevValue, r.PrevIndex))
+ default:
+ return toResponse(a.store.Delete(r.Path, r.Dir, r.Recursive))
+ }
+}
+
+func (a *applierV2store) Post(r *RequestV2) Response {
+ return toResponse(a.store.Create(r.Path, r.Dir, r.Val, true, r.TTLOptions()))
+}
+
+func (a *applierV2store) Put(r *RequestV2) Response {
+ ttlOptions := r.TTLOptions()
+ exists, existsSet := pbutil.GetBool(r.PrevExist)
+ switch {
+ case existsSet:
+ if exists {
+ if r.PrevIndex == 0 && r.PrevValue == "" {
+ return toResponse(a.store.Update(r.Path, r.Val, ttlOptions))
+ }
+ return toResponse(a.store.CompareAndSwap(r.Path, r.PrevValue, r.PrevIndex, r.Val, ttlOptions))
+ }
+ return toResponse(a.store.Create(r.Path, r.Dir, r.Val, false, ttlOptions))
+ case r.PrevIndex > 0 || r.PrevValue != "":
+ return toResponse(a.store.CompareAndSwap(r.Path, r.PrevValue, r.PrevIndex, r.Val, ttlOptions))
+ default:
+ if storeMemberAttributeRegexp.MatchString(r.Path) {
+ id := membership.MustParseMemberIDFromKey(path.Dir(r.Path))
+ var attr membership.Attributes
+ if err := json.Unmarshal([]byte(r.Val), &attr); err != nil {
+ plog.Panicf("unmarshal %s should never fail: %v", r.Val, err)
+ }
+ if a.cluster != nil {
+ a.cluster.UpdateAttributes(id, attr)
+ }
+ // return an empty response since there is no consumer.
+ return Response{}
+ }
+ if r.Path == membership.StoreClusterVersionKey() {
+ if a.cluster != nil {
+ a.cluster.SetVersion(semver.Must(semver.NewVersion(r.Val)), api.UpdateCapability)
+ }
+ // return an empty response since there is no consumer.
+ return Response{}
+ }
+ return toResponse(a.store.Set(r.Path, r.Dir, r.Val, ttlOptions))
+ }
+}
+
+func (a *applierV2store) QGet(r *RequestV2) Response {
+ return toResponse(a.store.Get(r.Path, r.Recursive, r.Sorted))
+}
+
+func (a *applierV2store) Sync(r *RequestV2) Response {
+ a.store.DeleteExpiredKeys(time.Unix(0, r.Time))
+ return Response{}
+}
+
+// applyV2Request interprets r as a call to store.X and returns a Response interpreted
+// from store.Event
+func (s *EtcdServer) applyV2Request(r *RequestV2) Response {
+ defer warnOfExpensiveRequest(time.Now(), r, nil, nil)
+
+ switch r.Method {
+ case "POST":
+ return s.applyV2.Post(r)
+ case "PUT":
+ return s.applyV2.Put(r)
+ case "DELETE":
+ return s.applyV2.Delete(r)
+ case "QGET":
+ return s.applyV2.QGet(r)
+ case "SYNC":
+ return s.applyV2.Sync(r)
+ default:
+ // This should never be reached, but just in case:
+ return Response{Err: ErrUnknownMethod}
+ }
+}
+
+func (r *RequestV2) TTLOptions() store.TTLOptionSet {
+ refresh, _ := pbutil.GetBool(r.Refresh)
+ ttlOptions := store.TTLOptionSet{Refresh: refresh}
+ if r.Expiration != 0 {
+ ttlOptions.ExpireTime = time.Unix(0, r.Expiration)
+ }
+ return ttlOptions
+}
+
+func toResponse(ev *store.Event, err error) Response {
+ return Response{Event: ev, Err: err}
+}