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/******************************************************************************
*
* package:
* file: hierarchy.cpp
* created: September 2007
* author: Martin Heinrich
*
*
* changes: Sep 2008, Martin Heinrich:
* - Fixed problem in Qt 4.4 where QReadWriteLock is by default
* non-recursive.
*
*
* Copyright 2007 - 2008 Martin Heinrich
*
* 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.
*
******************************************************************************/
/******************************************************************************
* Dependencies
******************************************************************************/
#include "hierarchy.h"
#include <QtCore/QDebug>
#include "logger.h"
namespace Log4Qt
{
/**************************************************************************
* Declarations
**************************************************************************/
/**************************************************************************
* C helper functions
**************************************************************************/
LOG4QT_DECLARE_STATIC_LOGGER(static_logger, ::LoggerRepository)
/**************************************************************************
* Class implementation: Hierarchy
**************************************************************************/
Hierarchy::Hierarchy() :
#if QT_VERSION < QT_VERSION_CHECK(4, 4, 0)
mObjectGuard(),
#else
mObjectGuard(QReadWriteLock::Recursive),
#endif
mLoggers(),
mThreshold(Level::NULL_INT),
mpRootLogger(logger(QString()))
{
// Store root logger to allow rootLogger() to be const
}
Hierarchy::~Hierarchy()
{
static_logger()->warn("Unexpected destruction of Hierarchy");
// QWriteLocker locker(&mObjectGuard);
//
// resetConfiguration();
// clear();
// delete mpRootLogger;
}
bool Hierarchy::exists(const QString &rName) const
{
QReadLocker locker(&mObjectGuard);
return mLoggers.contains(rName);
}
Logger *Hierarchy::logger(const QString &rName)
{
QWriteLocker locker(&mObjectGuard);
return createLogger(rName);
}
QList<Logger *> Hierarchy::loggers() const
{
QReadLocker locker(&mObjectGuard);
return mLoggers.values();
}
void Hierarchy::setThreshold(const QString &rThreshold)
{
setThreshold(Level::fromString(rThreshold));
}
void Hierarchy::resetConfiguration()
{
QWriteLocker locker(&mObjectGuard);
// Reset all loggers.
// Leave log, qt and root logger to the last to allow debugging of shutdown.
Logger *p_logging_logger = logger(QLatin1String(""));
Logger *p_qt_logger = logger(QLatin1String("Qt"));
Logger *p_root_logger = rootLogger();
Logger *p_logger;
Q_FOREACH(p_logger, mLoggers)
{
if ((p_logger == p_logging_logger) || (p_logger == p_qt_logger) || (p_logger == p_root_logger))
continue;
resetLogger(p_logger, Level::NULL_INT);
}
resetLogger(p_qt_logger, Level::NULL_INT);
resetLogger(p_logging_logger, Level::NULL_INT);
resetLogger(p_root_logger, Level::DEBUG_INT);
}
void Hierarchy::shutdown()
{
static_logger()->debug("Shutting down Hierarchy");
resetConfiguration();
}
#ifndef QT_NO_DEBUG_STREAM
QDebug Hierarchy::debug(QDebug &rDebug) const
{
rDebug.nospace() << "Hierarchy("
<< "loggers:" << loggers().count() << " "
<< "threshold:" << threshold().toString() << " "
<< "root-level:" << rootLogger()->level().toString() << " "
<< "root-appenders:" << rootLogger()->appenders().count()
<< ")";
return rDebug.space();
}
#endif // QT_NO_DEBUG_STREAM
Logger *Hierarchy::createLogger(const QString &rName)
{
// Q_ASSERT_X(, "Hierarchy::createLogger", "Lock must be held by caller")
const QString name_separator = QLatin1String("::");
Logger *p_logger = mLoggers.value(rName, 0);
if (p_logger != 0)
return p_logger;
if (rName.isEmpty())
{
p_logger = new Logger(this, Level::DEBUG_INT, QLatin1String("root"), 0);
mLoggers.insert(QString(), p_logger);
return p_logger;
}
QString parent_name;
int index = rName.lastIndexOf(name_separator);
if (index >=0)
parent_name = rName.left(index);
p_logger = new Logger(this, Level::NULL_INT, rName, createLogger(parent_name));
mLoggers.insert(rName, p_logger);
return p_logger;
}
void Hierarchy::resetLogger(Logger *pLogger, Level level) const
{
// Q_ASSERT_X(, "Hierarchy::resetLogger", "Lock must be held by caller")
pLogger->removeAllAppenders();
pLogger->setAdditivity(true);
pLogger->setLevel(level);
}
/**************************************************************************
* Implementation: Operators, Helper
**************************************************************************/
} // namespace Log4Qt
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