85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
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/*
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* Copyright 2017 The Cartographer Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CARTOGRAPHER_GRPC_FRAMEWORK_RPC_H
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#define CARTOGRAPHER_GRPC_FRAMEWORK_RPC_H
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#include <memory>
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#include <unordered_set>
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#include "cartographer/common/mutex.h"
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#include "cartographer_grpc/framework/rpc_handler.h"
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#include "grpc++/grpc++.h"
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namespace cartographer_grpc {
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namespace framework {
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class Service;
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class Rpc {
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public:
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enum class State { NEW_CONNECTION = 0, READ, WRITE, DONE };
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struct RpcState {
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const State state;
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Rpc* rpc;
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};
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Rpc(const RpcHandlerInfo& rpc_handler_info);
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::grpc::internal::RpcMethod::RpcType rpc_type() const;
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::grpc::ServerContext* server_context() { return &server_context_; }
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::grpc::internal::ServerAsyncStreamingInterface* responder();
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RpcState* GetState(State state);
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::google::protobuf::Message* request() { return request_.get(); }
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::google::protobuf::Message* response() { return response_.get(); }
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private:
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Rpc(const Rpc&) = delete;
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Rpc& operator=(const Rpc&) = delete;
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RpcHandlerInfo rpc_handler_info_;
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::grpc::ServerContext server_context_;
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RpcState new_connection_state_ = RpcState{State::NEW_CONNECTION, this};
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RpcState read_state_ = RpcState{State::READ, this};
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RpcState write_state_ = RpcState{State::WRITE, this};
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RpcState done_state_ = RpcState{State::DONE, this};
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std::unique_ptr<google::protobuf::Message> request_;
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std::unique_ptr<google::protobuf::Message> response_;
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};
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// This class keeps track of all in-flight RPCs for a 'Service'. Make sure that
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// all RPCs have been terminated and removed from this object before it goes out
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// of scope.
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class ActiveRpcs {
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public:
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ActiveRpcs();
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~ActiveRpcs() EXCLUDES(lock_);
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Rpc* Add(std::unique_ptr<Rpc> rpc) EXCLUDES(lock_);
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bool Remove(Rpc* rpc) EXCLUDES(lock_);
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private:
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cartographer::common::Mutex lock_;
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std::unordered_set<Rpc*> rpcs_;
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};
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} // namespace framework
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} // namespace cartographer_grpc
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#endif // CARTOGRAPHER_GRPC_FRAMEWORK_RPC_H
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