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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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111 lines
3.9 KiB
111 lines
3.9 KiB
/* |
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include "test/cpp/util/cli_call.h" |
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#include <iostream> |
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#include <grpc/grpc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/slice.h> |
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#include <grpc++/support/byte_buffer.h> |
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#include <grpc++/channel.h> |
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#include <grpc++/client_context.h> |
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#include <grpc++/generic/generic_stub.h> |
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namespace grpc { |
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namespace testing { |
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namespace { |
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void* tag(int i) { return (void*)(intptr_t)i; } |
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} // namespace |
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Status CliCall::Call(std::shared_ptr<grpc::Channel> channel, |
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const grpc::string& method, const grpc::string& request, |
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grpc::string* response, |
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const OutgoingMetadataContainer& metadata, |
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IncomingMetadataContainer* server_initial_metadata, |
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IncomingMetadataContainer* server_trailing_metadata) { |
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std::unique_ptr<grpc::GenericStub> stub(new grpc::GenericStub(channel)); |
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grpc::ClientContext ctx; |
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if (!metadata.empty()) { |
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for (OutgoingMetadataContainer::const_iterator iter = metadata.begin(); |
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iter != metadata.end(); ++iter) { |
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ctx.AddMetadata(iter->first, iter->second); |
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} |
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} |
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grpc::CompletionQueue cq; |
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std::unique_ptr<grpc::GenericClientAsyncReaderWriter> call( |
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stub->Call(&ctx, method, &cq, tag(1))); |
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void* got_tag; |
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bool ok; |
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cq.Next(&got_tag, &ok); |
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GPR_ASSERT(ok); |
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gpr_slice s = gpr_slice_from_copied_string(request.c_str()); |
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grpc::Slice req_slice(s, grpc::Slice::STEAL_REF); |
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grpc::ByteBuffer send_buffer(&req_slice, 1); |
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call->Write(send_buffer, tag(2)); |
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cq.Next(&got_tag, &ok); |
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GPR_ASSERT(ok); |
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call->WritesDone(tag(3)); |
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cq.Next(&got_tag, &ok); |
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GPR_ASSERT(ok); |
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grpc::ByteBuffer recv_buffer; |
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call->Read(&recv_buffer, tag(4)); |
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cq.Next(&got_tag, &ok); |
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if (!ok) { |
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std::cout << "Failed to read response." << std::endl; |
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return Status(StatusCode::INTERNAL, "Failed to read response"); |
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} |
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grpc::Status status; |
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call->Finish(&status, tag(5)); |
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cq.Next(&got_tag, &ok); |
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GPR_ASSERT(ok); |
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if (status.ok()) { |
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std::vector<grpc::Slice> slices; |
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recv_buffer.Dump(&slices); |
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response->clear(); |
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for (size_t i = 0; i < slices.size(); i++) { |
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response->append(reinterpret_cast<const char*>(slices[i].begin()), |
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slices[i].size()); |
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} |
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} |
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*server_initial_metadata = ctx.GetServerInitialMetadata(); |
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*server_trailing_metadata = ctx.GetServerTrailingMetadata(); |
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return status; |
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} |
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} // namespace testing |
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} // namespace grpc
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