hyperion.ng/libsrc/utils/Logger.cpp
redPanther a930d4e403 fix logger crash (#136)
make logger don't crash when long messages put to logger. Currently longest message is 1024 chars. Longer messages are truncated
2016-07-21 20:12:51 +02:00

149 lines
3.5 KiB
C++

#include "utils/Logger.h"
#include <iostream>
#include <algorithm>
#include <syslog.h>
#include <map>
#include <QFileInfo>
#include <QString>
std::string getBaseName( std::string sourceFile)
{
QFileInfo fi( sourceFile.c_str() );
return fi.fileName().toStdString();
}
static const char * LogLevelStrings[] = { "", "DEBUG", "INFO", "WARNING", "ERROR" };
static const int LogLevelSysLog[] = { LOG_DEBUG, LOG_DEBUG, LOG_INFO, LOG_WARNING, LOG_ERR };
static unsigned int loggerCount = 0;
static unsigned int loggerId = 0;
std::map<std::string,Logger*> *Logger::LoggerMap = nullptr;
Logger::LogLevel Logger::GLOBAL_MIN_LOG_LEVEL = Logger::UNSET;
Logger* Logger::getInstance(std::string name, Logger::LogLevel minLevel)
{
if (LoggerMap == nullptr)
{
LoggerMap = new std::map<std::string,Logger*>;
}
if ( LoggerMap->find(name) == LoggerMap->end() )
{
Logger* log = new Logger(name,minLevel);
LoggerMap->insert(std::pair<std::string,Logger*>(name,log)); // compat version, replace it with following line if we have 100% c++11
//LoggerMap->emplace(name,log); // not compat with older linux distro's e.g. wheezy
return log;
}
return LoggerMap->at(name);
}
void Logger::deleteInstance(std::string name)
{
if (LoggerMap == nullptr)
return;
if ( name.empty() )
{
std::map<std::string,Logger*>::iterator it;
for ( it=LoggerMap->begin(); it != LoggerMap->end(); it++)
{
delete it->second;
}
LoggerMap->clear();
}
else if (LoggerMap->find(name) != LoggerMap->end())
{
delete LoggerMap->at(name);
LoggerMap->erase(name);
}
}
void Logger::setLogLevel(LogLevel level,std::string name)
{
if ( name.empty() )
{
GLOBAL_MIN_LOG_LEVEL = level;
}
else
{
Logger* log = Logger::getInstance(name,level);
log->setMinLevel(level);
}
}
Logger::LogLevel Logger::getLogLevel(std::string name)
{
if ( name.empty() )
{
return GLOBAL_MIN_LOG_LEVEL;
}
Logger* log = Logger::getInstance(name);
return log->getMinLevel();
}
Logger::Logger ( std::string name, LogLevel minLevel ):
_name(name),
_minLevel(minLevel),
_syslogEnabled(true),
_loggerId(loggerId++)
{
#ifdef __GLIBC__
_appname = std::string(program_invocation_short_name);
#else
_appname = std::string(getprogname());
#endif
std::transform(_appname.begin(), _appname.end(),_appname.begin(), ::toupper);
loggerCount++;
if (_syslogEnabled && loggerCount == 1 )
{
openlog (program_invocation_short_name, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL0);
}
}
Logger::~Logger()
{
Debug(this, "logger '%s' destroyed", _name.c_str() );
loggerCount--;
if ( loggerCount == 0 )
closelog();
}
void Logger::Message(LogLevel level, const char* sourceFile, const char* func, unsigned int line, const char* fmt, ...)
{
if ( (GLOBAL_MIN_LOG_LEVEL == Logger::UNSET && level < _minLevel) // no global level, use level from logger
|| (GLOBAL_MIN_LOG_LEVEL > Logger::UNSET && level < GLOBAL_MIN_LOG_LEVEL) ) // global level set, use global level
return;
const size_t max_msg_length = 1024;
char msg[max_msg_length];
va_list args;
va_start (args, fmt);
vsnprintf (msg, max_msg_length, fmt, args);
va_end (args);
std::string location;
std::string function(func);
if ( level == Logger::DEBUG )
{
location = "<" + getBaseName(sourceFile) + ":" + QString::number(line).toStdString()+":"+ function + "()> ";
}
std::cout
<< "[" << _appname << " " << _name << "] <"
<< LogLevelStrings[level] << "> " << location << msg
<< std::endl;
if ( _syslogEnabled && level >= Logger::WARNING )
syslog (LogLevelSysLog[level], "%s", msg);
}