log.cpp
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#include "log.h"
#include "threadcontext.h"
// std
#include <ios>
#include <iomanip>
#include <sstream>
#include <syslog.h>
#include <sys/types.h>
#include <thread>
#include <unistd.h>
using namespace osdev::components::mqtt;
namespace {
std::string toString( LogLevel level )
{
switch (level)
{
case LogLevel::Trace:
return "T";
case LogLevel::Debug:
return "D";
case LogLevel::Info:
return "I";
case LogLevel::Warning:
return "W";
case LogLevel::Error:
return "E";
}
return "U";
}
} // namespace
const std::string Log::s_startMarker = std::string("|________________________________________________________________________________________________________________________________|");
std::string Log::s_context = std::string();
std::string Log::s_fileName = std::string();
LogLevel Log::s_logLevel = LogLevel::Info;
void Log::init( const std::string &context, const std::string &logFile, LogLevel logDepth )
{
s_logLevel = logDepth;
s_context = context;
if( !logFile.empty())
{
s_fileName = logFile;
}
}
void Log::terminate()
{
s_context.clear();
s_fileName.clear();
s_logLevel = LogLevel::Info;
}
void Log::log( const std::string &category, const std::string &message, LogLevel level )
{
std::string logCategory = s_context + '|' + toString( level ) + '|' + ThreadContext::instance().context() + '|' + category;
std::string logMessage = message;
if( logMessage.empty() )
{
static const std::string emptyMessage( "--" );
logMessage = emptyMessage;
}
else
{
// Replace % signs
ReplaceAll( logMessage, "%", "%%" );
}
writeLog( logCategory, logMessage, level );
}
void Log::writeLog(const std::string &category, const std::string &message, LogLevel level)
{
if( s_fileName.empty() )
{
(void)level;
// To be implemented.
return;
}
else
{
setlogmask( LOG_UPTO( LOG_NOTICE ) );
openlog( category.c_str(), LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1 );
syslog( LOG_NOTICE, "%s", message.c_str() );
closelog();
}
}
void Log::ReplaceAll( std::string &strToReplace,
const std::string& from_chars,
const std::string& to_chars )
{
size_t start_pos = 0;
while( ( start_pos = strToReplace.find( from_chars, start_pos ) ) != std::string::npos )
{
strToReplace.replace( start_pos, from_chars.length(), to_chars );
start_pos += to_chars.length(); // Handles case where 'to' is a substring of 'from'
}
}