| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #ifndef __TMASTERSERVER_H |
| #define __TMASTERSERVER_H |
| |
| #include "network/network_error.h" |
| #include "network/network.h" |
| #include "proto/tmaster.pb.h" |
| #include "proto/ckptmgr.pb.h" |
| #include "basics/basics.h" |
| |
| namespace heron { |
| namespace tmaster { |
| |
| using std::shared_ptr; |
| |
| class TMaster; |
| class TMetricsCollector; |
| |
| class TMasterServer : public Server { |
| public: |
| TMasterServer(std::shared_ptr<EventLoop> eventLoop, const NetworkOptions& options, |
| shared_ptr<TMetricsCollector> _collector, TMaster* _tmaster); |
| virtual ~TMasterServer(); |
| |
| protected: |
| virtual void HandleNewConnection(Connection* newConnection); |
| virtual void HandleConnectionClose(Connection* connection, NetworkErrorCode status); |
| |
| private: |
| // Various handlers for different requests |
| void HandleStMgrRegisterRequest(REQID _id, Connection* _conn, |
| pool_unique_ptr<proto::tmaster::StMgrRegisterRequest> _request); |
| void HandleStMgrHeartbeatRequest(REQID _id, Connection* _conn, |
| pool_unique_ptr<proto::tmaster::StMgrHeartbeatRequest> _request); |
| void HandleMetricsMgrStats(Connection*, pool_unique_ptr<proto::tmaster::PublishMetrics> _request); |
| |
| // Message sent by stmgr to tell tmaster that a particular checkpoint message |
| // was saved. This way the tmaster can keep track of which all instances have saved their |
| // state for any given checkpoint id. |
| void HandleInstanceStateStored(Connection*, |
| pool_unique_ptr<proto::ckptmgr::InstanceStateStored> _message); |
| // Handle response from stmgr for the RestoreTopologyStateRequest |
| void HandleRestoreTopologyStateResponse(Connection*, |
| pool_unique_ptr<proto::ckptmgr::RestoreTopologyStateResponse> _message); |
| // Stmgr can request tmaster to reset the state of the topology in case it finds any errors. |
| void HandleResetTopologyStateMessage(Connection*, |
| pool_unique_ptr<proto::ckptmgr::ResetTopologyState> _message); |
| |
| // our tmaster |
| shared_ptr<TMetricsCollector> collector_; |
| TMaster* tmaster_; |
| }; |
| } // namespace tmaster |
| } // namespace heron |
| |
| #endif |