| /** |
| * 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 HERON_INSTANCE_SLAVE_SLAVE_H_ |
| #define HERON_INSTANCE_SLAVE_SLAVE_H_ |
| |
| #include <string> |
| #include <thread> |
| #include "proto/messages.h" |
| #include "network/network.h" |
| #include "basics/basics.h" |
| |
| #include "utils/notifying-communicator.h" |
| #include "slave/task-context-impl.h" |
| #include "slave/instance-base.h" |
| |
| namespace heron { |
| namespace instance { |
| |
| class Slave { |
| public: |
| Slave(int myTaskId, const std::string& topologySo); |
| ~Slave(); |
| |
| // This essentially fires a thread with internalStart |
| void Start(); |
| |
| std::shared_ptr<EventLoop> eventLoop() { return eventLoop_; } |
| void setCommunicators( |
| NotifyingCommunicator<pool_unique_ptr<google::protobuf::Message>>* dataToSlave, |
| NotifyingCommunicator<google::protobuf::Message*>* dataFromSlave, |
| NotifyingCommunicator<google::protobuf::Message*>* metricsFromSlave); |
| |
| // Handles data from gateway thread |
| void HandleGatewayData(pool_unique_ptr<google::protobuf::Message> msg); |
| |
| // This is the notification that gateway thread consumed something that we wrote |
| void HandleGatewayDataConsumed(); |
| |
| // This is the notification that gateway thread consumed metrics that we sent |
| void HandleGatewayMetricsConsumed() { } |
| |
| private: |
| // This is the one thats running in the slave thread |
| void InternalStart(); |
| // Called when a new phyiscal plan is received |
| void HandleNewPhysicalPlan(pool_unique_ptr<proto::system::PhysicalPlan> pplan); |
| // Called when we receive new tuple messages from gateway |
| void HandleStMgrTuples(pool_unique_ptr<proto::system::HeronTupleSet2> msg); |
| |
| int myTaskId_; |
| std::shared_ptr<TaskContextImpl> taskContext_; |
| NotifyingCommunicator<pool_unique_ptr<google::protobuf::Message>>* dataToSlave_; |
| NotifyingCommunicator<google::protobuf::Message*>* dataFromSlave_; |
| NotifyingCommunicator<google::protobuf::Message*>* metricsFromSlave_; |
| InstanceBase* instance_; |
| std::shared_ptr<EventLoop> eventLoop_; |
| void* dllHandle_; |
| std::string pplan_typename_; |
| std::unique_ptr<std::thread> slaveThread_; |
| }; |
| |
| } // namespace instance |
| } // namespace heron |
| |
| #endif // HERON_INSTANCE_SLAVE_SLAVE_H_ |