| /* |
| * Copyright 2015 Twitter, Inc. |
| * |
| * 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. |
| */ |
| |
| #ifndef SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_SERVER_H_ |
| #define SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_SERVER_H_ |
| |
| #include <map> |
| #include <set> |
| #include <vector> |
| #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; |
| class TimeSpentMetric; |
| class AssignableMetric; |
| class MultiAssignableMetric; |
| } |
| } |
| |
| namespace heron { |
| namespace stmgr { |
| |
| class StMgr; |
| |
| class StMgrServer : public Server { |
| public: |
| StMgrServer(EventLoop* eventLoop, const NetworkOptions& options, const sp_string& _topology_name, |
| const sp_string& _topology_id, const sp_string& _stmgr_id, |
| const std::vector<sp_string>& _expected_instances, StMgr* _stmgr, |
| heron::common::MetricsMgrSt* _metrics_manager_client); |
| virtual ~StMgrServer(); |
| |
| void SendToInstance2(sp_int32 _task_id, const proto::system::HeronTupleSet2& _message); |
| void SendToInstance2(sp_int32 _task_id, |
| sp_int32 _byte_size, |
| const sp_string _type_name, |
| const char* _message); |
| |
| void BroadcastNewPhysicalPlan(const proto::system::PhysicalPlan& _pplan); |
| |
| // Do back pressure |
| void StartBackPressureClientCb(const sp_string& _other_stmgr_id); |
| // Relieve back pressure |
| void StopBackPressureClientCb(const sp_string& _other_stmgr_id); |
| |
| bool HaveAllInstancesConnectedToUs() const { |
| return active_instances_.size() == expected_instances_.size(); |
| } |
| |
| // Gets all the Instance information |
| void GetInstanceInfo(std::vector<proto::system::Instance*>& _return); |
| |
| bool DidAnnounceBackPressure() { return !remote_ends_who_caused_back_pressure_.empty(); } |
| |
| protected: |
| virtual void HandleNewConnection(Connection* newConnection); |
| virtual void HandleConnectionClose(Connection* connection, NetworkErrorCode status); |
| |
| private: |
| sp_string MakeBackPressureCompIdMetricName(const sp_string& instanceid); |
| sp_string MakeQueueSizeCompIdMetricName(const sp_string& instanceid); |
| sp_string GetInstanceName(Connection* _connection); |
| void UpdateQueueMetrics(EventLoop::Status); |
| |
| // Various handlers for different requests |
| |
| // First from other stream managers |
| void HandleStMgrHelloRequest(REQID _id, Connection* _conn, |
| proto::stmgr::StrMgrHelloRequest* _request); |
| void HandleTupleStreamMessage(Connection* _conn, proto::stmgr::TupleStreamMessage2* _message); |
| |
| // Next from local instances |
| void HandleRegisterInstanceRequest(REQID _id, Connection* _conn, |
| proto::stmgr::RegisterInstanceRequest* _request); |
| void HandleTupleSetMessage(Connection* _conn, proto::system::HeronTupleSet* _message); |
| |
| // Backpressure message from and to other stream managers |
| void HandleStartBackPressureMessage(Connection* _conn, |
| proto::stmgr::StartBackPressureMessage* _message); |
| void HandleStopBackPressureMessage(Connection* _conn, |
| proto::stmgr::StopBackPressureMessage* _message); |
| void SendStartBackPressureToOtherStMgrs(); |
| void SendStopBackPressureToOtherStMgrs(); |
| |
| // Back pressure related connection callbacks |
| // Do back pressure |
| void StartBackPressureConnectionCb(Connection* _connection); |
| // Relieve back pressure |
| void StopBackPressureConnectionCb(Connection* _connection); |
| |
| // Can we free the back pressure on the spouts? |
| void AttemptStopBackPressureFromSpouts(); |
| // Start back pressure on the spouts |
| void StartBackPressureOnSpouts(); |
| |
| // Compute the LocalSpouts from Physical Plan |
| void ComputeLocalSpouts(const proto::system::PhysicalPlan& _pplan); |
| |
| class InstanceData { |
| public: |
| explicit InstanceData(proto::system::Instance* _instance) |
| : instance_(_instance), local_spout_(false), conn_(NULL) {} |
| ~InstanceData() { delete instance_; } |
| |
| void set_local_spout() { local_spout_ = true; } |
| void set_connection(Connection* _conn) { conn_ = _conn; } |
| |
| proto::system::Instance* instance_; |
| bool local_spout_; |
| Connection* conn_; |
| }; |
| |
| // map from stmgr_id to their connection |
| typedef std::map<sp_string, Connection*> StreamManagerConnectionMap; |
| StreamManagerConnectionMap stmgrs_; |
| // Same as above but reverse |
| typedef std::map<Connection*, sp_string> ConnectionStreamManagerMap; |
| ConnectionStreamManagerMap rstmgrs_; |
| |
| // map from Connection to their task_id |
| typedef std::map<Connection*, sp_int32> ConnectionTaskIdMap; |
| ConnectionTaskIdMap active_instances_; |
| // map of task id to InstanceData |
| // Once populated, will not change |
| typedef std::map<sp_int32, InstanceData*> TaskIdInstanceDataMap; |
| TaskIdInstanceDataMap instance_info_; |
| |
| // map of Instance_id/stmgrid to metric |
| // Used for back pressure metrics |
| typedef std::map<sp_string, heron::common::TimeSpentMetric*> InstanceMetricMap; |
| InstanceMetricMap instance_metric_map_; |
| |
| // map of Instance_id/stmgrid to queue metric |
| typedef std::map<sp_string, heron::common::MultiAssignableMetric*> QueueMetricMap; |
| QueueMetricMap queue_metric_map_; |
| |
| // instances/stream mgrs causing back pressure |
| std::set<sp_string> remote_ends_who_caused_back_pressure_; |
| // stream managers that have announced back pressure |
| std::set<sp_string> stmgrs_who_announced_back_pressure_; |
| |
| sp_string topology_name_; |
| sp_string topology_id_; |
| sp_string stmgr_id_; |
| std::vector<sp_string> expected_instances_; |
| StMgr* stmgr_; |
| |
| // Metrics |
| heron::common::MetricsMgrSt* metrics_manager_client_; |
| heron::common::MultiCountMetric* stmgr_server_metrics_; |
| heron::common::TimeSpentMetric* back_pressure_metric_aggr_; |
| heron::common::TimeSpentMetric* back_pressure_metric_initiated_; |
| |
| bool spouts_under_back_pressure_; |
| }; |
| |
| } // namespace stmgr |
| } // namespace heron |
| |
| #endif // SRC_CPP_SVCS_STMGR_SRC_MANAGER_STMGR_SERVER_H_ |