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/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#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/config.h>
#include <grpc++/impl/codegen/rpc_method.h>
#include <grpc++/impl/codegen/status.h>
extern "C" {
struct grpc_byte_buffer;
}
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,
int max_size)
: call(c),
server_context(context),
request(req),
max_message_size(max_size) {}
Call* call;
ServerContext* server_context;
// Handler required to grpc_byte_buffer_destroy this
grpc_byte_buffer* request;
int max_message_size;
};
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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