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arangodb/lib/Logger/LogTopic.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGODB_LOGGER_LOG_TOPIC_H
#define ARANGODB_LOGGER_LOG_TOPIC_H 1
#include <stddef.h>
#include <atomic>
#include <string>
#include <utility>
#include <vector>
#include "Logger/LogLevel.h"
namespace arangodb {
class LogTopic {
LogTopic& operator=(LogTopic const&) = delete;
public:
static size_t const MAX_LOG_TOPICS = 64;
public:
static std::vector<std::pair<std::string, LogLevel>> logLevelTopics();
static void setLogLevel(std::string const&, LogLevel);
static LogTopic* lookup(std::string const&);
static std::string lookup(size_t topicId);
public:
explicit LogTopic(std::string const& name);
virtual ~LogTopic() = default;
LogTopic(std::string const& name, LogLevel level);
LogTopic(LogTopic const& that)
: _id(that._id), _name(that._name), _displayName(that._displayName) {
_level.store(that._level, std::memory_order_relaxed);
}
LogTopic(LogTopic&& that) noexcept
: _id(that._id),
_name(std::move(that._name)),
_displayName(std::move(that._displayName)) {
_level.store(that._level, std::memory_order_relaxed);
}
public:
size_t id() const { return _id; }
std::string const& name() const { return _name; }
std::string const& displayName() const { return _displayName; }
LogLevel level() const { return _level.load(std::memory_order_relaxed); }
virtual void setLogLevel(LogLevel level) {
_level.store(level, std::memory_order_relaxed);
}
private:
size_t const _id;
std::string const _name;
std::string _displayName;
std::atomic<LogLevel> _level;
};
} // namespace arangodb
#endif