| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H |
| #define GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H |
| |
| #include <grpc++/impl/codegen/config.h> |
| #include <grpc++/impl/codegen/core_codegen_interface.h> |
| #include <grpc++/impl/codegen/rpc_service_method.h> |
| #include <grpc++/impl/codegen/serialization_traits.h> |
| #include <grpc++/impl/codegen/server_interface.h> |
| #include <grpc++/impl/codegen/status.h> |
| |
| namespace grpc { |
| |
| class Call; |
| class CompletionQueue; |
| class Server; |
| class ServerInterface; |
| class ServerCompletionQueue; |
| class ServerContext; |
| |
| class ServerAsyncStreamingInterface { |
| public: |
| virtual ~ServerAsyncStreamingInterface() {} |
| |
| virtual void SendInitialMetadata(void* tag) = 0; |
| |
| private: |
| friend class ServerInterface; |
| virtual void BindCall(Call* call) = 0; |
| }; |
| |
| class Service { |
| public: |
| Service() : server_(nullptr) {} |
| virtual ~Service() {} |
| |
| bool has_async_methods() const { |
| for (auto it = methods_.begin(); it != methods_.end(); ++it) { |
| if (*it && (*it)->handler() == nullptr) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool has_synchronous_methods() const { |
| for (auto it = methods_.begin(); it != methods_.end(); ++it) { |
| if (*it && (*it)->handler() != nullptr) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool has_generic_methods() const { |
| for (auto it = methods_.begin(); it != methods_.end(); ++it) { |
| if (it->get() == nullptr) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| protected: |
| template <class Message> |
| void RequestAsyncUnary(int index, ServerContext* context, Message* request, |
| ServerAsyncStreamingInterface* stream, |
| CompletionQueue* call_cq, |
| ServerCompletionQueue* notification_cq, void* tag) { |
| server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq, |
| notification_cq, tag, request); |
| } |
| void RequestAsyncClientStreaming(int index, ServerContext* context, |
| ServerAsyncStreamingInterface* stream, |
| CompletionQueue* call_cq, |
| ServerCompletionQueue* notification_cq, |
| void* tag) { |
| server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq, |
| notification_cq, tag); |
| } |
| template <class Message> |
| void RequestAsyncServerStreaming(int index, ServerContext* context, |
| Message* request, |
| ServerAsyncStreamingInterface* stream, |
| CompletionQueue* call_cq, |
| ServerCompletionQueue* notification_cq, |
| void* tag) { |
| server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq, |
| notification_cq, tag, request); |
| } |
| void RequestAsyncBidiStreaming(int index, ServerContext* context, |
| ServerAsyncStreamingInterface* stream, |
| CompletionQueue* call_cq, |
| ServerCompletionQueue* notification_cq, |
| void* tag) { |
| server_->RequestAsyncCall(methods_[index].get(), context, stream, call_cq, |
| notification_cq, tag); |
| } |
| |
| void AddMethod(RpcServiceMethod* method) { methods_.emplace_back(method); } |
| |
| void MarkMethodAsync(int index) { |
| GPR_CODEGEN_ASSERT( |
| methods_[index].get() != nullptr && |
| "Cannot mark the method as 'async' because it has already been " |
| "marked as 'generic'."); |
| methods_[index]->ResetHandler(); |
| } |
| |
| void MarkMethodGeneric(int index) { |
| GPR_CODEGEN_ASSERT( |
| methods_[index]->handler() != nullptr && |
| "Cannot mark the method as 'generic' because it has already been " |
| "marked as 'async'."); |
| methods_[index].reset(); |
| } |
| |
| void MarkMethodStreamedUnary(int index, |
| MethodHandler* streamed_unary_method) { |
| GPR_CODEGEN_ASSERT(methods_[index] && methods_[index]->handler() && |
| "Cannot mark an async or generic method Streamed Unary"); |
| methods_[index]->SetHandler(streamed_unary_method); |
| |
| // From the server's point of view, streamed unary is a special |
| // case of BIDI_STREAMING that has 1 read and 1 write, in that order. |
| methods_[index]->SetMethodType(::grpc::RpcMethod::BIDI_STREAMING); |
| } |
| |
| private: |
| friend class Server; |
| friend class ServerInterface; |
| ServerInterface* server_; |
| std::vector<std::unique_ptr<RpcServiceMethod>> methods_; |
| }; |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_IMPL_CODEGEN_SERVICE_TYPE_H |