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client_unary_call.h
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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 Status BlockingUnaryCall(Channel* channel, const RpcMethod& method,
51  ClientContext* context, const InputMessage& request,
52  OutputMessage* result) {
53  CompletionQueue cq;
54  Call call(channel->CreateCall(method, context, &cq));
58  Status status = ops.SendMessage(request);
59  if (!status.ok()) {
60  return status;
61  }
62  ops.SendInitialMetadata(context->send_initial_metadata_);
63  ops.RecvInitialMetadata(context);
64  ops.RecvMessage(result);
65  ops.ClientSendClose();
66  ops.ClientRecvStatus(context, &status);
67  call.PerformOps(&ops);
68  GPR_ASSERT((cq.Pluck(&ops) && ops.got_message) || !status.ok());
69  return status;
70 }
71 
72 } // namespace grpc
73 
74 #endif // GRPCXX_IMPL_CLIENT_UNARY_CALL_H
Definition: call.h:426
Status BlockingUnaryCall(Channel *channel, const RpcMethod &method, ClientContext *context, const InputMessage &request, OutputMessage *result)
Definition: client_unary_call.h:50
Definition: client_context.h:149
Definition: call.h:179
Definition: call.h:333
Definition: call.h:560
Primary implementaiton of CallOpSetInterface.
Definition: call.h:502
Definition: call.h:227
A thin wrapper around grpc_completion_queue (see / src/core/surface/completion_queue.h).
Definition: completion_queue.h:81
Definition: rpc_method.h:43
bool ok() const
Is the status OK?
Definition: status.h:67
Did it work? If it didn't, why?
Definition: status.h:45
Definition: call.h:147
Definition: call.h:396
Channels represent a connection to an endpoint. Created by CreateChannel.
Definition: channel.h:69