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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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72 lines
2.8 KiB
72 lines
2.8 KiB
7 years ago
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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 GRPCPP_GENERIC_GENERIC_STUB_H
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#define GRPCPP_GENERIC_GENERIC_STUB_H
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#include <grpcpp/support/async_stream.h>
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#include <grpcpp/support/async_unary_call.h>
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#include <grpcpp/support/byte_buffer.h>
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namespace grpc {
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class CompletionQueue;
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typedef ClientAsyncReaderWriter<ByteBuffer, ByteBuffer>
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GenericClientAsyncReaderWriter;
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typedef ClientAsyncResponseReader<ByteBuffer> GenericClientAsyncResponseReader;
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/// Generic stubs provide a type-unsafe interface to call gRPC methods
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/// by name.
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class GenericStub final {
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public:
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explicit GenericStub(std::shared_ptr<ChannelInterface> channel)
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: channel_(channel) {}
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/// Setup a call to a named method \a method using \a context, but don't
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/// start it. Let it be started explicitly with StartCall and a tag.
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/// The return value only indicates whether or not registration of the call
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/// succeeded (i.e. the call won't proceed if the return value is nullptr).
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std::unique_ptr<GenericClientAsyncReaderWriter> PrepareCall(
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ClientContext* context, const grpc::string& method, CompletionQueue* cq);
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/// Setup a unary call to a named method \a method using \a context, and don't
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/// start it. Let it be started explicitly with StartCall.
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/// The return value only indicates whether or not registration of the call
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/// succeeded (i.e. the call won't proceed if the return value is nullptr).
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std::unique_ptr<GenericClientAsyncResponseReader> PrepareUnaryCall(
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ClientContext* context, const grpc::string& method,
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const ByteBuffer& request, CompletionQueue* cq);
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/// DEPRECATED for multi-threaded use
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/// Begin a call to a named method \a method using \a context.
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/// A tag \a tag will be delivered to \a cq when the call has been started
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/// (i.e, initial metadata has been sent).
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/// The return value only indicates whether or not registration of the call
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/// succeeded (i.e. the call won't proceed if the return value is nullptr).
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std::unique_ptr<GenericClientAsyncReaderWriter> Call(
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ClientContext* context, const grpc::string& method, CompletionQueue* cq,
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void* tag);
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private:
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std::shared_ptr<ChannelInterface> channel_;
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};
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} // namespace grpc
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#endif // GRPCPP_GENERIC_GENERIC_STUB_H
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