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/*
* Copyright (C) 2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) version 3.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <syncevo/LogSyslog.h>
#include <string.h>
#include <errno.h>
#include <syslog.h>
#include <boost/bind.hpp>
#include <syncevo/declarations.h>
using namespace std;
SE_BEGIN_CXX
LoggerSyslog::LoggerSyslog(const std::string &processName) :
m_processName(processName),
m_parentLogger(Logger::instance())
{
// valgrind tells us that openlog() does not copy the string.
// Must provide pointer to a permanent copy.
openlog(m_processName.c_str(), LOG_CONS | LOG_NDELAY | LOG_PID, LOG_USER);
Logger::pushLogger(this);
}
LoggerSyslog::~LoggerSyslog()
{
closelog();
Logger::popLogger();
}
static void printToSyslog(int sysloglevel, std::string &chunk, size_t expectedTotal)
{
if (!expectedTotal) {
// Might contain line breaks in the middle, split it.
size_t pos = 0;
while(true) {
size_t next = chunk.find('\n', pos);
if (next == chunk.npos) {
// Line break is guaranteed to be last character,
// so we have printed everything now.
return;
}
chunk[next] = 0;
syslog(sysloglevel, "%s", chunk.c_str() + pos);
pos = next + 1;
}
} else {
// Single line. We can print the trailing line break.
syslog(sysloglevel, "%s", chunk.c_str());
}
}
void LoggerSyslog::messagev(const MessageOptions &options,
const char *format,
va_list args)
{
// always to parent first (usually stdout):
// if the parent is a LogRedirect instance, then
// it'll flush its own output first, which ensures
// that the new output comes later (as desired)
{
va_list argscopy;
va_copy(argscopy, args);
m_parentLogger.messagev(options, format, argscopy);
va_end(argscopy);
}
if (options.m_level <= getLevel()) {
const std::string none;
formatLines(options.m_level, getLevel(),
&none, // Process name is set when opening the syslog, don't repeat it.
options.m_prefix,
format, args,
boost::bind(printToSyslog, getSyslogLevel(options.m_level), _1, _2));
}
}
int LoggerSyslog::getSyslogLevel(Level level)
{
switch (level) {
case ERROR:
return LOG_ERR;
case WARNING:
return LOG_WARNING;
case SHOW:
return LOG_NOTICE;
case INFO:
case DEV:
return LOG_INFO;
case DEBUG:
default:
return LOG_DEBUG;
}
}
SE_END_CXX
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