/* * Copyright (c) Facebook, Inc. and its affiliates. * * 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. */ #pragma once #include #include #include namespace folly { /** * StreamHandlerFactory is a LogHandlerFactory that constructs log handlers * that write to stdout or stderr. * * This is quite similar to FileHandlerFactory, but it always writes to an * existing open file descriptor rather than opening a new file. This handler * factory is separate from FileHandlerFactory primarily for safety reasons: * FileHandlerFactory supports appending to arbitrary files via config * parameters, while StreamHandlerFactory does not. */ class StreamHandlerFactory : public LogHandlerFactory { public: StringPiece getType() const override { return "stream"; } std::shared_ptr createHandler(const Options& options) override; class WriterFactory : public StandardLogHandlerFactory::WriterFactory { public: bool processOption(StringPiece name, StringPiece value) override; std::shared_ptr createWriter() override; private: std::string stream_; FileWriterFactory fileWriterFactory_; }; }; } // namespace folly