FilterGroup.h

/*
 * Copyright (C) 2019-2021 HERE Europe B.V.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * License-Filename: LICENSE
 */
 
#pragma once
 
#include <istream>
#include <string>
#include <unordered_map>
#include <utility>
 
#include <boost/none.hpp>
#include <boost/optional.hpp>
 
#include <olp/core/CoreApi.h>
#include <olp/core/logging/Level.h>
 
namespace olp {
namespace logging {
class CORE_API FilterGroup {
 public:
  inline FilterGroup();
 
  FilterGroup(const FilterGroup&) = default;
 
  FilterGroup& operator=(const FilterGroup&) = default;
 
  inline FilterGroup(FilterGroup&& other) noexcept;
 
  inline FilterGroup& operator=(FilterGroup&& other) noexcept;
 
  inline boost::optional<Level> getLevel() const;
 
  inline FilterGroup& setLevel(Level level);
 
  inline FilterGroup& clearLevel();
 
  inline boost::optional<Level> getLevel(const std::string& tag) const;
 
  inline FilterGroup& setLevel(Level level, const std::string& tag);
 
  inline FilterGroup& clearLevel(const std::string& tag);
 
  inline FilterGroup& clear();
 
  bool load(const std::string& fileName);
 
  bool load(std::istream& stream);
 
  static boost::optional<Level> stringToLevel(const std::string& levelStr);
 
 private:
  friend class Log;
 
  boost::optional<Level> m_defaultLevel;
  std::unordered_map<std::string, Level> m_tagLevels;
};
 
inline FilterGroup::FilterGroup() : m_defaultLevel(boost::none) {}
 
inline FilterGroup::FilterGroup(FilterGroup&& other) noexcept
    : m_defaultLevel(std::move(other.m_defaultLevel)),
      m_tagLevels(std::move(other.m_tagLevels)) {}
 
inline FilterGroup& FilterGroup::operator=(FilterGroup&& other) noexcept {
  m_defaultLevel = std::move(other.m_defaultLevel);
  m_tagLevels = std::move(other.m_tagLevels);
  return *this;
}
 
inline boost::optional<Level> FilterGroup::getLevel() const {
  return m_defaultLevel;
}
 
inline FilterGroup& FilterGroup::setLevel(Level level) {
  m_defaultLevel = level;
  return *this;
}
 
inline FilterGroup& FilterGroup::clearLevel() {
  m_defaultLevel = boost::none;
  return *this;
}
 
inline boost::optional<Level> FilterGroup::getLevel(
    const std::string& tag) const {
  auto foundIter = m_tagLevels.find(tag);
  if (foundIter == m_tagLevels.end()) return boost::none;
  return foundIter->second;
}
 
inline FilterGroup& FilterGroup::setLevel(Level level, const std::string& tag) {
  m_tagLevels[tag] = level;
  return *this;
}
 
inline FilterGroup& FilterGroup::clearLevel(const std::string& tag) {
  m_tagLevels.erase(tag);
  return *this;
}
 
inline FilterGroup& FilterGroup::clear() {
  m_defaultLevel = boost::none;
  m_tagLevels.clear();
  return *this;
}
 
}  // namespace logging
}  // namespace olp