Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : #ifndef GRPCXX_IMPL_CLIENT_UNARY_CALL_H
      35             : #define GRPCXX_IMPL_CLIENT_UNARY_CALL_H
      36             : 
      37             : #include <grpc++/impl/call.h>
      38             : #include <grpc++/support/config.h>
      39             : #include <grpc++/support/status.h>
      40             : 
      41             : namespace grpc {
      42             : 
      43             : class Channel;
      44             : class ClientContext;
      45             : class CompletionQueue;
      46             : class RpcMethod;
      47             : 
      48             : // Wrapper that performs a blocking unary call
      49             : template <class InputMessage, class OutputMessage>
      50      159480 : Status BlockingUnaryCall(Channel* channel, const RpcMethod& method,
      51             :                          ClientContext* context, const InputMessage& request,
      52             :                          OutputMessage* result) {
      53      159480 :   CompletionQueue cq;
      54      159482 :   Call call(channel->CreateCall(method, context, &cq));
      55             :   CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
      56             :             CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>,
      57      318970 :             CallOpClientSendClose, CallOpClientRecvStatus> ops;
      58      159480 :   Status status = ops.SendMessage(request);
      59      159484 :   if (!status.ok()) {
      60           0 :     return status;
      61             :   }
      62      159482 :   ops.SendInitialMetadata(context->send_initial_metadata_);
      63      159479 :   ops.RecvInitialMetadata(context);
      64      159479 :   ops.RecvMessage(result);
      65      159480 :   ops.ClientSendClose();
      66      159480 :   ops.ClientRecvStatus(context, &status);
      67      159480 :   call.PerformOps(&ops);
      68      159486 :   GPR_ASSERT((cq.Pluck(&ops) && ops.got_message) || !status.ok());
      69      318962 :   return status;
      70             : }
      71             : 
      72             : }  // namespace grpc
      73             : 
      74             : #endif  // GRPCXX_IMPL_CLIENT_UNARY_CALL_H