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/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
#define GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
#include <grpcpp/impl/codegen/channel_interface.h>
namespace grpc {
class CompletionQueue;
namespace internal {
class InterceptorBatchMethodsImpl;
/// An InterceptedChannel is available to client Interceptors. An
/// InterceptedChannel is unique to an interceptor, and when an RPC is started
/// on this channel, only those interceptors that come after this interceptor
/// see the RPC.
class InterceptedChannel : public ChannelInterface {
public:
virtual ~InterceptedChannel() { channel_ = nullptr; }
/// Get the current channel state. If the channel is in IDLE and
/// \a try_to_connect is set to true, try to connect.
grpc_connectivity_state GetState(bool try_to_connect) override {
return channel_->GetState(try_to_connect);
}
private:
InterceptedChannel(ChannelInterface* channel, size_t pos)
: channel_(channel), interceptor_pos_(pos) {}
Call CreateCall(const RpcMethod& method, ::grpc::ClientContext* context,
::grpc::CompletionQueue* cq) override {
return channel_->CreateCallInternal(method, context, cq, interceptor_pos_);
}
void PerformOpsOnCall(CallOpSetInterface* ops, Call* call) override {
return channel_->PerformOpsOnCall(ops, call);
}
void* RegisterMethod(const char* method) override {
return channel_->RegisterMethod(method);
}
void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
gpr_timespec deadline,
::grpc::CompletionQueue* cq,
void* tag) override {
return channel_->NotifyOnStateChangeImpl(last_observed, deadline, cq, tag);
}
bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
gpr_timespec deadline) override {
return channel_->WaitForStateChangeImpl(last_observed, deadline);
}
::grpc::CompletionQueue* CallbackCQ() override {
return channel_->CallbackCQ();
}
ChannelInterface* channel_;
size_t interceptor_pos_;
friend class InterceptorBatchMethodsImpl;
};
} // namespace internal
} // namespace grpc
#endif // GRPCPP_IMPL_CODEGEN_INTERCEPTED_CHANNEL_H
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