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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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85 lines
2.7 KiB
85 lines
2.7 KiB
9 months ago
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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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