diff options
Diffstat (limited to 'include/grpc++/impl/codegen/client_unary_call.h')
-rw-r--r-- | include/grpc++/impl/codegen/client_unary_call.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/grpc++/impl/codegen/client_unary_call.h b/include/grpc++/impl/codegen/client_unary_call.h new file mode 100644 index 0000000000..0134dec800 --- /dev/null +++ b/include/grpc++/impl/codegen/client_unary_call.h @@ -0,0 +1,75 @@ +/* + * + * Copyright 2015-2016, 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/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_); + ops.RecvInitialMetadata(context); + ops.RecvMessage(result); + ops.ClientSendClose(); + ops.ClientRecvStatus(context, &status); + call.PerformOps(&ops); + GPR_ASSERT((cq.Pluck(&ops) && ops.got_message) || !status.ok()); + return status; +} + +} // namespace grpc + +#endif // GRPCXX_IMPL_CODEGEN_CLIENT_UNARY_CALL_H |