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client_unary_call.h
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1 /*
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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++/config.h>
38 #include <grpc++/status.h>
39
40 #include <grpc++/impl/call.h>
41
42 namespace grpc {
43
44 class ChannelInterface;
45 class ClientContext;
46 class CompletionQueue;
47 class RpcMethod;
48
49 // Wrapper that performs a blocking unary call
50 template <class InputMessage, class OutputMessage>
51 Status BlockingUnaryCall(ChannelInterface* channel, const RpcMethod& method,
52 ClientContext* context, const InputMessage& request,
53 OutputMessage* result) {
54 CompletionQueue cq;
55 Call call(channel->CreateCall(method, context, &cq));
56 CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
57 CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>,
58 CallOpClientSendClose, CallOpClientRecvStatus> ops;
59 Status status = ops.SendMessage(request);
60 if (!status.ok()) {
61 return status;
62 }
63 ops.SendInitialMetadata(context->send_initial_metadata_);
64 ops.RecvInitialMetadata(context);
65 ops.RecvMessage(result);
66 ops.ClientSendClose();
67 ops.ClientRecvStatus(context, &status);
68 call.PerformOps(&ops);
69 GPR_ASSERT((cq.Pluck(&ops) && ops.got_message) || !status.ok());
70 return status;
71 }
72
73 } // namespace grpc
74
75 #endif // GRPCXX_IMPL_CLIENT_UNARY_CALL_H
grpc::CallOpClientRecvStatus
Definition: call.h:431
config.h
grpc::ClientContext
Definition: client_context.h:74
grpc::ChannelInterface::CreateCall
virtual Call CreateCall(const RpcMethod &method, ClientContext *context, CompletionQueue *cq)=0
grpc::CallOpSendMessage
Definition: call.h:190
grpc::CallOpClientSendClose
Definition: call.h:341
grpc::Call
Definition: call.h:565
grpc::ChannelInterface
Definition: channel_interface.h:52
call.h
grpc::BlockingUnaryCall
Status BlockingUnaryCall(ChannelInterface *channel, const RpcMethod &method, ClientContext *context, const InputMessage &request, OutputMessage *result)
Definition: client_unary_call.h:51
grpc::CallOpSet
Primary implementaiton of CallOpSetInterface.
Definition: call.h:506
grpc::CallOpRecvMessage
Definition: call.h:237
grpc::CompletionQueue
Definition: completion_queue.h:87
status.h
grpc::RpcMethod
Definition: rpc_method.h:39
grpc::Status::ok
bool ok() const
Definition: status.h:55
grpc::Status
Definition: status.h:42
grpc::CallOpSendInitialMetadata
Definition: call.h:159
grpc::CallOpRecvInitialMetadata
Definition: call.h:402