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Pods/gRPC-C++/include/grpcpp/impl/delegating_channel.h

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+//
+//
+// Copyright 2019 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_DELEGATING_CHANNEL_H
+#define GRPCPP_IMPL_DELEGATING_CHANNEL_H
+
+#include <memory>
+
+#include <grpcpp/impl/channel_interface.h>
+
+namespace grpc {
+namespace experimental {
+
+class DelegatingChannel : public grpc::ChannelInterface {
+ public:
+  ~DelegatingChannel() override {}
+
+  explicit DelegatingChannel(
+      std::shared_ptr<grpc::ChannelInterface> delegate_channel)
+      : delegate_channel_(delegate_channel) {}
+
+  grpc_connectivity_state GetState(bool try_to_connect) override {
+    return delegate_channel()->GetState(try_to_connect);
+  }
+
+  std::shared_ptr<grpc::ChannelInterface> delegate_channel() {
+    return delegate_channel_;
+  }
+
+ private:
+  internal::Call CreateCall(const internal::RpcMethod& method,
+                            ClientContext* context,
+                            grpc::CompletionQueue* cq) final {
+    return delegate_channel()->CreateCall(method, context, cq);
+  }
+
+  void PerformOpsOnCall(internal::CallOpSetInterface* ops,
+                        internal::Call* call) final {
+    delegate_channel()->PerformOpsOnCall(ops, call);
+  }
+
+  void* RegisterMethod(const char* method) final {
+    return delegate_channel()->RegisterMethod(method);
+  }
+
+  void NotifyOnStateChangeImpl(grpc_connectivity_state last_observed,
+                               gpr_timespec deadline, grpc::CompletionQueue* cq,
+                               void* tag) override {
+    delegate_channel()->NotifyOnStateChangeImpl(last_observed, deadline, cq,
+                                                tag);
+  }
+
+  bool WaitForStateChangeImpl(grpc_connectivity_state last_observed,
+                              gpr_timespec deadline) override {
+    return delegate_channel()->WaitForStateChangeImpl(last_observed, deadline);
+  }
+
+  internal::Call CreateCallInternal(const internal::RpcMethod& method,
+                                    ClientContext* context,
+                                    grpc::CompletionQueue* cq,
+                                    size_t interceptor_pos) final {
+    return delegate_channel()->CreateCallInternal(method, context, cq,
+                                                  interceptor_pos);
+  }
+
+  grpc::CompletionQueue* CallbackCQ() final {
+    return delegate_channel()->CallbackCQ();
+  }
+
+  std::shared_ptr<grpc::ChannelInterface> delegate_channel_;
+};
+
+}  // namespace experimental
+}  // namespace grpc
+
+#endif  // GRPCPP_IMPL_DELEGATING_CHANNEL_H