icinga2/lib/base/logger.cpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2013 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. *
******************************************************************************/
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#include "base/application.h"
#include "base/streamlogger.h"
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#include "base/logger.h"
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#include "base/dynamictype.h"
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#include "base/utility.h"
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#include "base/objectlock.h"
#include "base/context.h"
#include "base/convert.h"
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#include <boost/make_shared.hpp>
#include <boost/foreach.hpp>
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#include <iostream>
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using namespace icinga;
REGISTER_TYPE(Logger);
std::set<Logger::Ptr> Logger::m_Loggers;
boost::mutex Logger::m_Mutex;
bool Logger::m_ConsoleLogEnabled = true;
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/**
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* Constructor for the Logger class.
*/
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void Logger::Start(void)
{
DynamicObject::Start();
boost::mutex::scoped_lock lock(m_Mutex);
m_Loggers.insert(GetSelf());
}
void Logger::Stop(void)
{
boost::mutex::scoped_lock lock(m_Mutex);
m_Loggers.erase(GetSelf());
}
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std::set<Logger::Ptr> Logger::GetLoggers(void)
{
boost::mutex::scoped_lock lock(m_Mutex);
return m_Loggers;
}
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/**
* Writes a message to the application's log.
*
* @param severity The message severity.
* @param facility The log facility.
* @param message The message.
*/
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void icinga::Log(LogSeverity severity, const String& facility,
const String& message)
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{
LogEntry entry;
entry.Timestamp = Utility::GetTime();
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entry.Severity = severity;
entry.Facility = facility;
entry.Message = message;
if (severity >= LogWarning) {
ContextTrace context;
if (context.GetLength() > 0) {
std::ostringstream trace;
trace << context;
entry.Message += "\nContext:" + trace.str();
}
}
BOOST_FOREACH(const Logger::Ptr& logger, Logger::GetLoggers()) {
ObjectLock llock(logger);
if (!logger->IsActive())
continue;
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if (entry.Severity >= logger->GetMinSeverity())
logger->ProcessLogEntry(entry);
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}
LogSeverity defaultLogLevel;
if (Application::IsDebugging())
defaultLogLevel = LogDebug;
else
defaultLogLevel = LogInformation;
if (Logger::IsConsoleLogEnabled() && entry.Severity >= defaultLogLevel) {
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static bool tty = StreamLogger::IsTty(std::cout);
StreamLogger::ProcessLogEntry(std::cout, tty, entry);
}
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}
/**
* Retrieves the minimum severity for this logger.
*
* @returns The minimum severity.
*/
LogSeverity Logger::GetMinSeverity(void) const
{
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String severity = GetSeverity();
if (severity.IsEmpty())
return LogInformation;
else
return Logger::StringToSeverity(severity);
}
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/**
* Converts a severity enum value to a string.
*
* @param severity The severity value.
*/
String Logger::SeverityToString(LogSeverity severity)
{
switch (severity) {
case LogDebug:
return "debug";
case LogInformation:
return "information";
case LogWarning:
return "warning";
case LogCritical:
return "critical";
default:
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BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid severity."));
}
}
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/**
* Converts a string to a severity enum value.
*
* @param severity The 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
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BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid severity: " + severity));
}
void Logger::DisableConsoleLog(void)
{
m_ConsoleLogEnabled = false;
}
bool Logger::IsConsoleLogEnabled(void)
{
return m_ConsoleLogEnabled;
}