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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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75 lines
2.9 KiB
75 lines
2.9 KiB
/* |
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* |
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* Copyright 2015-2016, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef GRPCXX_IMPL_CLIENT_UNARY_CALL_H |
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#define GRPCXX_IMPL_CLIENT_UNARY_CALL_H |
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#include <grpc++/impl/call.h> |
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#include <grpc++/impl/codegen/channel_interface.h> |
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#include <grpc++/support/config.h> |
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#include <grpc++/support/status.h> |
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namespace grpc { |
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class Channel; |
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class ClientContext; |
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class CompletionQueue; |
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class RpcMethod; |
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// Wrapper that performs a blocking unary call |
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template <class InputMessage, class OutputMessage> |
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Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method, |
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ClientContext* context, const InputMessage& request, |
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OutputMessage* result) { |
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CompletionQueue cq; |
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Call call(channel->CreateCall(method, context, &cq)); |
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CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, |
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CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>, |
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CallOpClientSendClose, CallOpClientRecvStatus> ops; |
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Status status = ops.SendMessage(request); |
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if (!status.ok()) { |
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return status; |
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} |
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ops.SendInitialMetadata(context->send_initial_metadata_); |
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ops.RecvInitialMetadata(context); |
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ops.RecvMessage(result); |
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ops.ClientSendClose(); |
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ops.ClientRecvStatus(context, &status); |
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call.PerformOps(&ops); |
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GPR_ASSERT((cq.Pluck(&ops) && ops.got_message) || !status.ok()); |
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return status; |
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} |
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} // namespace grpc |
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#endif // GRPCXX_IMPL_CLIENT_UNARY_CALL_H
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