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/* Copyright 2013 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#pragma once
#ifndef _WIN32 // TODO(schwerin): Should be #if MONGO_CONFIG_HAVE_SYSLOG_H?
#include <sstream>
#include <syslog.h>
#include "mongo/base/disallow_copying.h"
#include "mongo/base/status.h"
#include "mongo/logger/appender.h"
#include "mongo/logger/encoder.h"
namespace mongo {
namespace logger {
/**
* Appender for writing to syslog. Users must have separately called openlog().
*/
template <typename Event>
class SyslogAppender : public Appender<Event> {
MONGO_DISALLOW_COPYING(SyslogAppender);
public:
typedef Encoder<Event> EventEncoder;
explicit SyslogAppender(EventEncoder* encoder) : _encoder(encoder) {}
virtual Status append(const Event& event) {
std::ostringstream os;
_encoder->encode(event, os);
if (!os)
return Status(ErrorCodes::LogWriteFailed, "Error writing log message to syslog.");
syslog(getSyslogPriority(event.getSeverity()), "%s", os.str().c_str());
return Status::OK();
}
private:
int getSyslogPriority(LogSeverity severity) {
if (severity <= LogSeverity::Debug(1))
return LOG_DEBUG;
if (severity == LogSeverity::Warning())
return LOG_WARNING;
if (severity == LogSeverity::Error())
return LOG_ERR;
if (severity >= LogSeverity::Severe())
return LOG_CRIT;
// Info() and Log().
return LOG_INFO;
}
std::unique_ptr<EventEncoder> _encoder;
};
} // namespace logger
} // namespace mongo
#endif
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