| /* |
| * |
| * Copyright 2015, 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_CLIENT_UNARY_CALL_H |
| #define GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H |
| |
| #include <grpc++/impl/codegen/call.h> |
| #include <grpc++/impl/codegen/channel_interface.h> |
| #include <grpc++/impl/codegen/config.h> |
| #include <grpc++/impl/codegen/core_codegen_interface.h> |
| #include <grpc++/impl/codegen/status.h> |
| |
| namespace grpc { |
| |
| class Channel; |
| class ClientContext; |
| class CompletionQueue; |
| class RpcMethod; |
| |
| // Wrapper that performs a blocking unary call |
| template <class InputMessage, class OutputMessage> |
| Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method, |
| ClientContext* context, const InputMessage& request, |
| OutputMessage* result) { |
| CompletionQueue cq; |
| Call call(channel->CreateCall(method, context, &cq)); |
| CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, |
| CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>, |
| CallOpClientSendClose, CallOpClientRecvStatus> |
| ops; |
| Status status = ops.SendMessage(request); |
| if (!status.ok()) { |
| return status; |
| } |
| ops.SendInitialMetadata(context->send_initial_metadata_, |
| context->initial_metadata_flags()); |
| ops.RecvInitialMetadata(context); |
| ops.RecvMessage(result); |
| ops.ClientSendClose(); |
| ops.ClientRecvStatus(context, &status); |
| call.PerformOps(&ops); |
| if (cq.Pluck(&ops)) { |
| if (!ops.got_message && status.ok()) { |
| return Status(StatusCode::UNIMPLEMENTED, |
| "No message returned for unary request"); |
| } |
| } else { |
| GPR_CODEGEN_ASSERT(!status.ok()); |
| } |
| return status; |
| } |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H |