nextcloud/lib/private/Log/Systemdlog.php

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<?php
/**
* @copyright Copyright (c) 2018, Johannes Ernst
*
* @author Johannes Ernst <jernst@indiecomputing.com>
*
* @license GNU AGPL version 3 or any later version
*
* This code 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Log;
use OC\HintException;
use OC\SystemConfig;
use OCP\IConfig;
use OCP\ILogger;
use OCP\Log\IWriter;
// The following fields are understood by systemd/journald, see
// man systemd.journal-fields. All are optional:
// MESSAGE=
// The human-readable message string for this entry.
// MESSAGE_ID=
// A 128-bit message identifier ID
// PRIORITY=
// A priority value between 0 ("emerg") and 7 ("debug")
// CODE_FILE=, CODE_LINE=, CODE_FUNC=
// The code location generating this message, if known
// ERRNO=
// The low-level Unix error number causing this entry, if any.
// SYSLOG_FACILITY=, SYSLOG_IDENTIFIER=, SYSLOG_PID=
// Syslog compatibility fields
class Systemdlog extends LogDetails implements IWriter {
protected $levels = [
ILogger::DEBUG => 7,
ILogger::INFO => 6,
ILogger::WARN => 4,
ILogger::ERROR => 3,
ILogger::FATAL => 2,
];
protected $syslogId;
public function __construct(SystemConfig $config) {
parent::__construct($config);
if(!function_exists('sd_journal_send')) {
throw new HintException(
'PHP extension php-systemd is not available.',
'Please install and enable PHP extension systemd if you wish to log to the Systemd journal.');
}
$this->syslogId = $config->getValue('syslog_tag', 'Nextcloud');
}
/**
* Write a message to the log.
* @param string $app
* @param string $message
* @param int $level
*/
public function write(string $app, $message, int $level) {
$journal_level = $this->levels[$level];
sd_journal_send('PRIORITY='.$journal_level,
'SYSLOG_IDENTIFIER='.$this->syslogId,
'MESSAGE=' . $this->logDetailsAsJSON($app, $message, $level));
}
}