icinga2/base/logger.cpp

134 lines
3.7 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
* *
* 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. *
******************************************************************************/
#include "i2-base.h"
using namespace icinga;
set<Logger::Ptr> Logger::m_Loggers;
/**
* Constructor for the logger class.
*
* @param minSeverity The minimum severity of log messages that should be sent
* to this logger.
*/
Logger::Logger(LogSeverity minSeverity)
: m_MinSeverity(minSeverity)
{ }
/**
* Writes a message to the application's log.
*
* @param severity The message severity.
* @param facility The log facility.
* @param message The message.
*/
void Logger::Write(LogSeverity severity, const string& facility,
const string& message)
{
LogEntry entry;
time(&entry.Timestamp);
entry.Severity = severity;
entry.Facility = facility;
entry.Message = message;
Event::Post(boost::bind(&Logger::ForwardLogEntry, entry));
}
/**
* Registers a new logger.
*
* @param logger The logger.
*/
void Logger::RegisterLogger(const Logger::Ptr& logger)
{
assert(Application::IsMainThread());
m_Loggers.insert(logger);
}
/**
* Unregisters a logger.
*
* @param logger The logger.
*/
void Logger::UnregisterLogger(const Logger::Ptr& logger)
{
assert(Application::IsMainThread());
m_Loggers.erase(logger);
}
/**
* Retrieves the minimum severity for this logger.
*
* @returns The minimum severity.
*/
LogSeverity Logger::GetMinSeverity(void) const
{
return m_MinSeverity;
}
/**
* Forwards a log entry to the registered loggers.
*
* @param entry The log entry.
*/
void Logger::ForwardLogEntry(const LogEntry& entry)
{
set<Logger::Ptr>::iterator it;
for (it = m_Loggers.begin(); it != m_Loggers.end(); it++) {
Logger::Ptr logger = *it;
if (entry.Severity >= logger->GetMinSeverity())
logger->ProcessLogEntry(entry);
}
}
string Logger::SeverityToString(LogSeverity severity)
{
switch (severity) {
case LogDebug:
return "debug";
case LogInformation:
return "information";
case LogWarning:
return "warning";
case LogCritical:
return "critical";
default:
throw invalid_argument("Invalid severity.");
}
}
LogSeverity Logger::StringToSeverity(const string& severity)
{
if (severity == "debug")
return LogDebug;
else if (severity == "information")
return LogInformation;
else if (severity == "warning")
return LogWarning;
else if (severity == "critical")
return LogCritical;
else
throw invalid_argument("Invalid severity: " + severity);
}