| /** |
| * 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 SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_CLIENT_H_ |
| #define SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_CLIENT_H_ |
| |
| #include "network/network_error.h" |
| #include "proto/messages.h" |
| #include "network/network.h" |
| #include "basics/basics.h" |
| |
| namespace heron { |
| namespace common { |
| class MetricsMgrSt; |
| class MultiCountMetric; |
| } |
| } |
| |
| namespace heron { |
| namespace stmgr { |
| |
| using std::shared_ptr; |
| |
| class StMgrClientMgr; |
| |
| class StMgrClient : public Client { |
| public: |
| StMgrClient(shared_ptr<EventLoop> eventLoop, const NetworkOptions& _options, |
| const sp_string& _topology_name, |
| const sp_string& _topology_id, const sp_string& _our_id, const sp_string& _other_id, |
| StMgrClientMgr* _client_manager, |
| shared_ptr<heron::common::MetricsMgrSt> const& _metrics_manager_client, |
| bool _droptuples_upon_backpressure); |
| virtual ~StMgrClient(); |
| |
| void Quit(); |
| |
| // Return true if successful in sending the message. false otherwise |
| bool SendTupleStreamMessage(proto::stmgr::TupleStreamMessage& _msg); |
| void SendStartBackPressureMessage(); |
| void SendStopBackPressureMessage(); |
| void SendDownstreamStatefulCheckpoint(proto::ckptmgr::DownstreamStatefulCheckpoint* _message); |
| bool IsRegistered() const { return is_registered_; } |
| |
| protected: |
| virtual void HandleConnect(NetworkErrorCode status); |
| virtual void HandleClose(NetworkErrorCode status); |
| |
| private: |
| void HandleHelloResponse( |
| void*, |
| pool_unique_ptr<proto::stmgr::StrMgrHelloResponse> _response, |
| NetworkErrorCode); |
| void HandleTupleStreamMessage(pool_unique_ptr<proto::stmgr::TupleStreamMessage> _message); |
| |
| void OnReConnectTimer(); |
| void SendHelloRequest(); |
| // Do back pressure |
| virtual void StartBackPressureConnectionCb(Connection* _connection); |
| // Relieve back pressure |
| virtual void StopBackPressureConnectionCb(Connection* _connection); |
| |
| sp_string topology_name_; |
| sp_string topology_id_; |
| sp_string our_stmgr_id_; |
| sp_string other_stmgr_id_; |
| bool quit_; |
| |
| StMgrClientMgr* client_manager_; |
| // Metrics |
| shared_ptr<heron::common::MetricsMgrSt> metrics_manager_client_; |
| shared_ptr<heron::common::MultiCountMetric> stmgr_client_metrics_; |
| |
| // Configs to be read |
| sp_int32 reconnect_other_streammgrs_interval_sec_; |
| sp_int32 reconnect_other_streammgrs_max_attempt_; |
| |
| // Counters |
| sp_int64 ndropped_messages_; |
| sp_int32 reconnect_attempts_; |
| |
| // Have we registered ourselves |
| bool is_registered_; |
| // Do we drop tuples upon backpressure |
| bool droptuples_upon_backpressure_; |
| }; |
| |
| } // namespace stmgr |
| } // namespace heron |
| |
| #endif // SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_CLIENT_H_ |