icinga2/lib/base/logger.hpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
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* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef LOGGER_H
#define LOGGER_H
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#include "base/i2-base.hpp"
#include "base/logger.thpp"
#include <set>
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#include <sstream>
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namespace icinga
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{
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/**
* Log severity.
*
* @ingroup base
*/
enum LogSeverity
{
LogDebug,
LogNotice,
LogInformation,
LogWarning,
LogCritical
};
/**
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* A log entry.
*
* @ingroup base
*/
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struct LogEntry {
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double Timestamp; /**< The timestamp when this log entry was created. */
LogSeverity Severity; /**< The severity of this log entry. */
String Facility; /**< The facility this log entry belongs to. */
String Message; /**< The log entry's message. */
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};
/**
* A log provider.
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*
* @ingroup base
*/
class I2_BASE_API Logger : public ObjectImpl<Logger>
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{
public:
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DECLARE_OBJECT(Logger);
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static String SeverityToString(LogSeverity severity);
static LogSeverity StringToSeverity(const String& severity);
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LogSeverity GetMinSeverity(void) const;
/**
* Processes the log entry and writes it to the log that is
* represented by this ILogger object.
*
* @param entry The log entry that is to be processed.
*/
virtual void ProcessLogEntry(const LogEntry& entry) = 0;
virtual void Flush(void) = 0;
static std::set<Logger::Ptr> GetLoggers(void);
static void DisableConsoleLog(void);
static bool IsConsoleLogEnabled(void);
static void DisableTimestamp(bool);
static bool IsTimestampEnabled(void);
static void SetConsoleLogSeverity(LogSeverity logSeverity);
static LogSeverity GetConsoleLogSeverity(void);
static void StaticInitialize(void);
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protected:
virtual void Start(void);
virtual void Stop(void);
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private:
static boost::mutex m_Mutex;
static std::set<Logger::Ptr> m_Loggers;
static bool m_ConsoleLogEnabled;
static bool m_TimestampEnabled;
static LogSeverity m_ConsoleLogSeverity;
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};
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I2_BASE_API void IcingaLog(LogSeverity severity, const String& facility, const String& message);
class Log
{
public:
inline Log(LogSeverity severity, const String& facility, const String& message)
: m_Severity(severity), m_Facility(facility)
{
m_Buffer << message;
}
inline Log(LogSeverity severity, const String& facility)
: m_Severity(severity), m_Facility(facility)
{ }
inline ~Log(void)
{
IcingaLog(m_Severity, m_Facility, m_Buffer.str());
}
template<typename T>
Log& operator<<(const T& val)
{
m_Buffer << val;
return *this;
}
private:
LogSeverity m_Severity;
String m_Facility;
std::ostringstream m_Buffer;
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Log(void);
Log& operator=(const Log& rhs);
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};
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}
#endif /* LOGGER_H */