1 /* 2 * 3 * Copyright 2019 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #ifndef GRPCPP_IMPL_CODEGEN_DELEGATING_CHANNEL_H 20 #define GRPCPP_IMPL_CODEGEN_DELEGATING_CHANNEL_H 21 22 namespace grpc { 23 namespace experimental { 24 25 class DelegatingChannel : public ::grpc::ChannelInterface { 26 public: ~DelegatingChannel()27 virtual ~DelegatingChannel() {} 28 DelegatingChannel(std::shared_ptr<::grpc::ChannelInterface> delegate_channel)29 DelegatingChannel(std::shared_ptr<::grpc::ChannelInterface> delegate_channel) 30 : delegate_channel_(delegate_channel) {} 31 GetState(bool try_to_connect)32 grpc_connectivity_state GetState(bool try_to_connect) override { 33 return delegate_channel()->GetState(try_to_connect); 34 } 35 delegate_channel()36 std::shared_ptr<::grpc::ChannelInterface> delegate_channel() { 37 return delegate_channel_; 38 } 39 40 private: CreateCall(const internal::RpcMethod & method,ClientContext * context,::grpc_impl::CompletionQueue * cq)41 internal::Call CreateCall(const internal::RpcMethod& method, 42 ClientContext* context, 43 ::grpc_impl::CompletionQueue* cq) final { 44 return delegate_channel()->CreateCall(method, context, cq); 45 } 46 PerformOpsOnCall(internal::CallOpSetInterface * ops,internal::Call * call)47 void PerformOpsOnCall(internal::CallOpSetInterface* ops, 48 internal::Call* call) final { 49 delegate_channel()->PerformOpsOnCall(ops, call); 50 } 51 RegisterMethod(const char * method)52 void* RegisterMethod(const char* method) final { 53 return delegate_channel()->RegisterMethod(method); 54 } 55 NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,gpr_timespec deadline,::grpc_impl::CompletionQueue * cq,void * tag)56 void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed, 57 gpr_timespec deadline, 58 ::grpc_impl::CompletionQueue* cq, 59 void* tag) override { 60 delegate_channel()->NotifyOnStateChangeImpl(last_observed, deadline, cq, 61 tag); 62 } 63 WaitForStateChangeImpl(grpc_connectivity_state last_observed,gpr_timespec deadline)64 bool WaitForStateChangeImpl(grpc_connectivity_state last_observed, 65 gpr_timespec deadline) override { 66 return delegate_channel()->WaitForStateChangeImpl(last_observed, deadline); 67 } 68 CreateCallInternal(const internal::RpcMethod & method,ClientContext * context,::grpc_impl::CompletionQueue * cq,size_t interceptor_pos)69 internal::Call CreateCallInternal(const internal::RpcMethod& method, 70 ClientContext* context, 71 ::grpc_impl::CompletionQueue* cq, 72 size_t interceptor_pos) final { 73 return delegate_channel()->CreateCallInternal(method, context, cq, 74 interceptor_pos); 75 } 76 CallbackCQ()77 ::grpc_impl::CompletionQueue* CallbackCQ() final { 78 return delegate_channel()->CallbackCQ(); 79 } 80 81 std::shared_ptr<::grpc::ChannelInterface> delegate_channel_; 82 }; 83 84 } // namespace experimental 85 } // namespace grpc 86 87 #endif // GRPCPP_IMPL_CODEGEN_DELEGATING_CHANNEL_H 88