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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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84 lines
2.7 KiB
84 lines
2.7 KiB
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// Copyright 2024 gRPC authors. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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// |
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#ifndef GRPCPP_GENERIC_CALLBACK_GENERIC_SERVICE_H |
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#define GRPCPP_GENERIC_CALLBACK_GENERIC_SERVICE_H |
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#include <grpc/support/port_platform.h> |
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#include <grpcpp/impl/server_callback_handlers.h> |
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#include <grpcpp/support/byte_buffer.h> |
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#include <grpcpp/support/server_callback.h> |
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struct grpc_server; |
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namespace grpc { |
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/// \a ServerGenericBidiReactor is the reactor class for bidi streaming RPCs |
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/// invoked on a CallbackGenericService. It is just a ServerBidi reactor with |
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/// ByteBuffer arguments. |
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using ServerGenericBidiReactor = ServerBidiReactor<ByteBuffer, ByteBuffer>; |
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class GenericCallbackServerContext final : public grpc::CallbackServerContext { |
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public: |
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const std::string& method() const { return method_; } |
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const std::string& host() const { return host_; } |
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private: |
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friend class grpc::Server; |
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std::string method_; |
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std::string host_; |
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}; |
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/// \a CallbackGenericService is the base class for generic services implemented |
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/// using the callback API and registered through the ServerBuilder using |
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/// RegisterCallbackGenericService. |
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class CallbackGenericService { |
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public: |
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CallbackGenericService() {} |
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virtual ~CallbackGenericService() {} |
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/// The "method handler" for the generic API. This function should be |
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/// overridden to provide a ServerGenericBidiReactor that implements the |
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/// application-level interface for this RPC. Unimplemented by default. |
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virtual ServerGenericBidiReactor* CreateReactor( |
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GenericCallbackServerContext* /*ctx*/) { |
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class Reactor : public ServerGenericBidiReactor { |
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public: |
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Reactor() { this->Finish(Status(StatusCode::UNIMPLEMENTED, "")); } |
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void OnDone() override { delete this; } |
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}; |
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return new Reactor; |
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} |
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private: |
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friend class grpc::Server; |
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internal::CallbackBidiHandler<ByteBuffer, ByteBuffer>* Handler() { |
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return new internal::CallbackBidiHandler<ByteBuffer, ByteBuffer>( |
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[this](grpc::CallbackServerContext* ctx) { |
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return CreateReactor(static_cast<GenericCallbackServerContext*>(ctx)); |
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}); |
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} |
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grpc::Server* server_{nullptr}; |
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}; |
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} // namespace grpc |
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#endif // GRPCPP_GENERIC_CALLBACK_GENERIC_SERVICE_H
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