text: /*
   * 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 <folly/logging/LogHandlerFactory.h>
  
  namespace folly {
  
  /**
   * FileHandlerFactory is a LogHandlerFactory that constructs log handlers
   * that write to a file.
   *
   * Note that FileHandlerFactory allows opening and appending to arbitrary files
   * based on the handler options.  This may make it unsafe to use
   * FileHandlerFactory in some contexts: for instance, a setuid binary should
   * generally avoid registering the FileHandlerFactory if they allow log
   * handlers to be configured via command line parameters, since otherwise this
   * may allow non-root users to append to files that they otherwise would not
   * have write permissions for.
   */
  class FileHandlerFactory : public LogHandlerFactory {
   public:
    StringPiece getType() const override {
      return "file";
    }
  
    std::shared_ptr<LogHandler> createHandler(const Options& options) override;
  
   private:
    class WriterFactory;
  };
  
  } // namespace folly
  