| /** |
| * 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_GATEWAY_GATEWAY_H_ |
| #define HERON_INSTANCE_GATEWAY_GATEWAY_H_ |
| |
| #include <string> |
| #include "proto/messages.h" |
| #include "network/network.h" |
| #include "basics/basics.h" |
| |
| #include "utils/notifying-communicator.h" |
| #include "metric/imetric.h" |
| #include "gateway/gateway-metrics.h" |
| #include "gateway/stmgr-client.h" |
| #include "metrics/metricsmgr-client.h" |
| |
| namespace heron { |
| namespace instance { |
| |
| class Gateway { |
| public: |
| Gateway(const std::string& topologyName, |
| const std::string& topologyId, const std::string& instanceId, |
| const std::string& componentName, int taskId, int componentIndex, |
| const std::string& stmgrId, int stmgrPort, int metricsMgrPort, |
| std::shared_ptr<EventLoop> eventLoop); |
| virtual ~Gateway(); |
| |
| // All kinds of initialization like starting clients |
| void Start(); |
| |
| // Called when Slave indicates that it consumed some data |
| void HandleSlaveDataConsumed(); |
| |
| // Called when we need to consume data from slave |
| void HandleSlaveData(google::protobuf::Message* msg); |
| |
| // Called when we need to consume metrics from slave |
| void HandleSlaveMetrics(google::protobuf::Message* msg); |
| |
| 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) { |
| dataToSlave_ = dataToSlave; |
| dataFromSlave_ = dataFromSlave; |
| metricsFromSlave_ = metricsFromSlave; |
| } |
| |
| private: |
| void HandleNewPhysicalPlan(pool_unique_ptr<proto::system::PhysicalPlan> pplan); |
| void HandleStMgrTuples(pool_unique_ptr<proto::system::HeronTupleSet2> tuples); |
| void ResumeConsumingFromSlaveTimer(); |
| std::string topologyName_; |
| std::string topologyId_; |
| int stmgrPort_; |
| int metricsMgrPort_; |
| proto::system::Instance instanceProto_; |
| std::shared_ptr<StMgrClient> stmgrClient_; |
| std::shared_ptr<common::MetricsMgrClient> metricsMgrClient_; |
| std::shared_ptr<GatewayMetrics> gatewayMetrics_; |
| NotifyingCommunicator<pool_unique_ptr<google::protobuf::Message>>* dataToSlave_; |
| NotifyingCommunicator<google::protobuf::Message*>* dataFromSlave_; |
| NotifyingCommunicator<google::protobuf::Message*>* metricsFromSlave_; |
| std::shared_ptr<EventLoop> eventLoop_; |
| // This is the max number of outstanding packets that are yet to be |
| // consumed by the Slave |
| int maxReadBufferSize_; |
| // This is the max number of outstanding packets that are buffered |
| // to be sent to the stmgr |
| int maxWriteBufferSize_; |
| // The maximum size of a packet |
| int maxPacketSize_; |
| // Are we actively reading from slaveQueue |
| bool readingFromSlave_; |
| }; |
| |
| } // namespace instance |
| } // namespace heron |
| |
| #endif // HERON_INSTANCE_GATEWAY_GATEWAY_H_ |