etcdserver: initial member api proto

etcdserver/etcdserverpb/rpc.proto

@@ -57,6 +57,20 @@ service Lease {
   // TODO(xiangli) Get details information (expirations, leased keys, etc.) of a lease?
 }
 
+service Cluster {
+  // AddMember adds a member into the cluster.
+  rpc AddMember(AddMemberRequest) returns (AddMemberResponse) {}
+
+  // RemoveMember removes an existing member from the cluster.
+  rpc RemoveMember(RemoveMemberRequest) returns (RemoveMemberResponse) {}
+
+  // UpdateMember updates the member configuration.
+  rpc UpdateMember(UpdateMemberRequest) returns (UpdateMemberResponse) {}
+
+  // ListMember lists all the members in the cluster.
+  rpc ListMember(ListMemberRequest) returns (ListMemberResponse) {}
+}
+
 message ResponseHeader {
   uint64 cluster_id = 1;
   uint64 member_id = 2;
@@ -292,3 +306,47 @@ message LeaseKeepAliveResponse {
   int64 ID = 2;
   int64 TTL = 3;
 }
+
+message Member {
+  uint64 ID = 1;
+  // If the member is not started, name will be an empty string.
+  string name = 2;
+  repeated string peer_URLs = 3;
+  // If the member is not started, client_URLs will be an zero length
+  // string array.
+  repeated string client_URLs = 4;
+}
+
+message AddMemberRequest {
+  repeated string peer_URLs = 1;
+}
+
+message AddMemberResponse {
+  ResponseHeader header = 1;
+  Member member = 2;
+}
+
+message RemoveMemberRequest {
+  uint64 ID = 1;
+}
+
+message RemoveMemberResponse {
+  ResponseHeader header = 1;
+}
+
+message UpdateMemberRequest {
+  uint64 ID = 1;
+  repeated string peer_URLs = 2;
+}
+
+message UpdateMemberResponse{
+  ResponseHeader header = 1;
+}
+
+message ListMemberRequest {
+}
+
+message ListMemberResponse {
+  ResponseHeader header = 1;
+  repeated Member members = 2;
+}