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Diffstat (limited to 'include/grpcpp/impl/codegen/intercepted_channel.h')
-rw-r--r-- | include/grpcpp/impl/codegen/intercepted_channel.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/grpcpp/impl/codegen/intercepted_channel.h b/include/grpcpp/impl/codegen/intercepted_channel.h new file mode 100644 index 0000000000..5255a6d147 --- /dev/null +++ b/include/grpcpp/impl/codegen/intercepted_channel.h @@ -0,0 +1,80 @@ +/* + * + * 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 { + +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, ClientContext* context, + 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, 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); + } + + 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 |