| /** |
| * 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_CLIENTMGR_H_ |
| #define SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_CLIENTMGR_H_ |
| |
| #include <unordered_map> |
| #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 StMgr; |
| class StMgrClient; |
| |
| class StMgrClientMgr { |
| public: |
| StMgrClientMgr(shared_ptr<EventLoop> eventLoop, const sp_string& _topology_name, |
| const sp_string& _topology_id, const sp_string& _stmgr_id, StMgr* _stream_manager, |
| shared_ptr<heron::common::MetricsMgrSt> const& _metrics_manager_client, |
| sp_int64 _high_watermark, sp_int64 _low_watermark, |
| bool _droptuples_upon_backpressure); |
| virtual ~StMgrClientMgr(); |
| |
| // Start the appropriate clients based on a new physical plan |
| virtual void StartConnections(proto::system::PhysicalPlan const& _pplan); |
| // return true if we are successful in sending the message. false otherwise |
| bool SendTupleStreamMessage(sp_int32 _task_id, |
| const sp_string& _stmgr_id, |
| const proto::system::HeronTupleSet2& _msg); |
| |
| // Forward the call to the stmgr |
| void StartBackPressureOnServer(const sp_string& _other_stmgr_id); |
| // Forward the call to the stmgr |
| void StopBackPressureOnServer(const sp_string& _other_stmgr_id); |
| // Used by the server to tell the client to send the back pressure related |
| // messages |
| void SendStartBackPressureToOtherStMgrs(); |
| void SendStopBackPressureToOtherStMgrs(); |
| bool DidAnnounceBackPressure(); |
| // Called by StMgrClient when its connection closes |
| void HandleDeadStMgrConnection(const sp_string& _stmgr_id); |
| // Called by StMgrClient when it successfully registers |
| void HandleStMgrClientRegistered(); |
| void SendDownstreamStatefulCheckpoint(const sp_string& _stmgr_id, |
| proto::ckptmgr::DownstreamStatefulCheckpoint* _message); |
| |
| // Interface to close all connections |
| virtual void CloseConnectionsAndClear(); |
| |
| // Check if all clients are registered |
| virtual bool AllStMgrClientsRegistered(); |
| |
| private: |
| shared_ptr<StMgrClient> CreateClient(const sp_string& _other_stmgr_id, |
| const sp_string& _host_name, sp_int32 _port); |
| |
| // map of stmgrid to its client |
| std::unordered_map<sp_string, shared_ptr<StMgrClient>> clients_; |
| |
| sp_string topology_name_; |
| sp_string topology_id_; |
| sp_string stmgr_id_; |
| shared_ptr<EventLoop> eventLoop_; |
| |
| StMgr* stream_manager_; |
| // Metrics |
| shared_ptr<heron::common::MetricsMgrSt> metrics_manager_client_; |
| shared_ptr<heron::common::MultiCountMetric> stmgr_clientmgr_metrics_; |
| |
| sp_int64 high_watermark_; |
| sp_int64 low_watermark_; |
| |
| bool droptuples_upon_backpressure_; |
| }; |
| |
| } // namespace stmgr |
| } // namespace heron |
| |
| #endif // SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_CLIENTMGR_H_ |