The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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100 lines
3.6 KiB
100 lines
3.6 KiB
/* |
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* |
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* Copyright 2014, 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 "src/cpp/client/channel.h" |
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#include <chrono> |
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#include <memory> |
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#include <grpc/grpc.h> |
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#include <grpc/grpc_security.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/slice.h> |
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#include "src/cpp/proto/proto_utils.h" |
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#include <grpc++/call.h> |
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#include <grpc++/channel_arguments.h> |
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#include <grpc++/client_context.h> |
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#include <grpc++/completion_queue.h> |
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#include <grpc++/config.h> |
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#include <grpc++/credentials.h> |
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#include <grpc++/impl/rpc_method.h> |
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#include <grpc++/status.h> |
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#include <google/protobuf/message.h> |
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namespace grpc { |
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Channel::Channel(const grpc::string &target, const ChannelArguments &args) |
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: target_(target) { |
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grpc_channel_args channel_args; |
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args.SetChannelArgs(&channel_args); |
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c_channel_ = grpc_channel_create( |
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target_.c_str(), channel_args.num_args > 0 ? &channel_args : nullptr); |
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} |
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Channel::Channel(const grpc::string &target, |
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const std::unique_ptr<Credentials> &creds, |
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const ChannelArguments &args) |
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: target_(args.GetSslTargetNameOverride().empty() |
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? target |
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: args.GetSslTargetNameOverride()) { |
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grpc_channel_args channel_args; |
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args.SetChannelArgs(&channel_args); |
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grpc_credentials *c_creds = creds ? creds->GetRawCreds() : nullptr; |
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c_channel_ = grpc_secure_channel_create( |
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c_creds, target.c_str(), |
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channel_args.num_args > 0 ? &channel_args : nullptr); |
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} |
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Channel::~Channel() { grpc_channel_destroy(c_channel_); } |
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Call Channel::CreateCall(const RpcMethod &method, ClientContext *context, |
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CompletionQueue *cq) { |
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auto c_call = |
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grpc_channel_create_call(c_channel_, cq->cq(), method.name(), |
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target_.c_str(), context->RawDeadline()); |
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context->set_call(c_call); |
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return Call(c_call, this, cq); |
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} |
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void Channel::PerformOpsOnCall(CallOpBuffer *buf, Call *call) { |
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static const size_t MAX_OPS = 8; |
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size_t nops = MAX_OPS; |
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grpc_op ops[MAX_OPS]; |
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buf->FillOps(ops, &nops); |
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GPR_ASSERT(GRPC_CALL_OK == |
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grpc_call_start_batch(call->call(), ops, nops, |
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buf)); |
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} |
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} // namespace grpc
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