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