/*
 * Copyright 2017-present Facebook, Inc.
 *
 * 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/Optional.h>
#include <folly/Range.h>
#include <memory>

namespace folly {

class File;
class LogWriter;

/**
 * A helper class for creating an AsyncFileWriter or ImmediateFileWriter based
 * on log handler options settings.
 *
 * This is used by StreamHandlerFactory and FileHandlerFactory.
 */
class FileWriterFactory {
 public:
  bool processOption(StringPiece name, StringPiece value);
  std::shared_ptr<LogWriter> createWriter(File file);

 private:
  bool async_{true};
  Optional<size_t> maxBufferSize_;
};

} // namespace folly