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/*
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*
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* Copyright 2015 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 GRPCXX_GENERIC_ASYNC_GENERIC_SERVICE_H
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#define GRPCXX_GENERIC_ASYNC_GENERIC_SERVICE_H
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#include <grpc++/support/async_stream.h>
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#include <grpc++/support/byte_buffer.h>
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struct grpc_server;
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namespace grpc {
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typedef ServerAsyncReaderWriter<ByteBuffer, ByteBuffer>
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GenericServerAsyncReaderWriter;
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class GenericServerContext final : public ServerContext {
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public:
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const grpc::string& method() const { return method_; }
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const grpc::string& host() const { return host_; }
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private:
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friend class Server;
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friend class ServerInterface;
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grpc::string method_;
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grpc::string host_;
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};
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// A generic service at the server side accepts all RPC methods and hosts. It is
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// typically used in proxies. The generic service can be registered to a server
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// which also has other services.
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// Sample usage:
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// ServerBuilder builder;
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// auto cq = builder.AddCompletionQueue();
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// AsyncGenericService generic_service;
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// builder.RegisterAsyncGeneicService(&generic_service);
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// auto server = builder.BuildAndStart();
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//
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// // request a new call
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// GenericServerContext context;
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// GenericAsyncReaderWriter stream;
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// generic_service.RequestCall(&context, &stream, cq.get(), cq.get(), tag);
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//
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// When tag is retrieved from cq->Next(), context.method() can be used to look
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// at the method and the RPC can be handled accordingly.
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class AsyncGenericService final {
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public:
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AsyncGenericService() : server_(nullptr) {}
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void RequestCall(GenericServerContext* ctx,
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GenericServerAsyncReaderWriter* reader_writer,
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CompletionQueue* call_cq,
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ServerCompletionQueue* notification_cq, void* tag);
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private:
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friend class Server;
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Server* server_;
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};
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} // namespace grpc
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#endif // GRPCXX_GENERIC_ASYNC_GENERIC_SERVICE_H
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