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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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79 lines
2.3 KiB
79 lines
2.3 KiB
7 years ago
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/*
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*
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* Copyright 2016 gRPC 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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*/
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#ifndef GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
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#define GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
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#include <climits>
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#include <functional>
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#include <map>
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#include <memory>
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#include <vector>
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#include <grpcpp/impl/codegen/byte_buffer.h>
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#include <grpcpp/impl/codegen/config.h>
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#include <grpcpp/impl/codegen/rpc_method.h>
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#include <grpcpp/impl/codegen/status.h>
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namespace grpc {
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class ServerContext;
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namespace internal {
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/// Base class for running an RPC handler.
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class MethodHandler {
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public:
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virtual ~MethodHandler() {}
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struct HandlerParameter {
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HandlerParameter(Call* c, ServerContext* context, grpc_byte_buffer* req)
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: call(c), server_context(context) {
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request.set_buffer(req);
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}
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~HandlerParameter() { request.Release(); }
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Call* call;
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ServerContext* server_context;
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// Handler required to destroy these contents
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ByteBuffer request;
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};
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virtual void RunHandler(const HandlerParameter& param) = 0;
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};
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/// Server side rpc method class
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class RpcServiceMethod : public RpcMethod {
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public:
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/// Takes ownership of the handler
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RpcServiceMethod(const char* name, RpcMethod::RpcType type,
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MethodHandler* handler)
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: RpcMethod(name, type), server_tag_(nullptr), handler_(handler) {}
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void set_server_tag(void* tag) { server_tag_ = tag; }
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void* server_tag() const { return server_tag_; }
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/// if MethodHandler is nullptr, then this is an async method
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MethodHandler* handler() const { return handler_.get(); }
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void ResetHandler() { handler_.reset(); }
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void SetHandler(MethodHandler* handler) { handler_.reset(handler); }
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private:
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void* server_tag_;
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std::unique_ptr<MethodHandler> handler_;
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};
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} // namespace internal
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} // namespace grpc
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#endif // GRPCPP_IMPL_CODEGEN_RPC_SERVICE_METHOD_H
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