Viewing file:  LogstashFormatter.php (5.18 KB) -rw-r--r--
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<?php
/*
* This file is part of the Monolog package.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Monolog\Formatter;
/**
* Serializes a log message to Logstash Event Format
*
* @see http://logstash.net/
* @see https://github.com/logstash/logstash/blob/master/lib/logstash/event.rb
*
* @author Tim Mower <timothy.mower@gmail.com>
*/
class LogstashFormatter extends NormalizerFormatter
{
const V0 = 0;
const V1 = 1;
/**
* @var string the name of the system for the Logstash log message, used to fill the @source field
*/
protected $systemName;
/**
* @var string an application name for the Logstash log message, used to fill the @type field
*/
protected $applicationName;
/**
* @var string a prefix for 'extra' fields from the Monolog record (optional)
*/
protected $extraPrefix;
/**
* @var string a prefix for 'context' fields from the Monolog record (optional)
*/
protected $contextPrefix;
/**
* @var int logstash format version to use
*/
protected $version;
/**
* @param string $applicationName the application that sends the data, used as the "type" field of logstash
* @param string $systemName the system/machine name, used as the "source" field of logstash, defaults to the hostname of the machine
* @param string $extraPrefix prefix for extra keys inside logstash "fields"
* @param string $contextPrefix prefix for context keys inside logstash "fields", defaults to ctxt_
* @param int $version the logstash format version to use, defaults to 0
*/
public function __construct($applicationName, $systemName = null, $extraPrefix = null, $contextPrefix = 'ctxt_', $version = self::V0)
{
// logstash requires a ISO 8601 format date with optional millisecond precision.
parent::__construct('Y-m-d\TH:i:s.uP');
$this->systemName = $systemName ?: gethostname();
$this->applicationName = $applicationName;
$this->extraPrefix = $extraPrefix;
$this->contextPrefix = $contextPrefix;
$this->version = $version;
}
/**
* {@inheritdoc}
*/
public function format(array $record)
{
$record = parent::format($record);
if ($this->version === self::V1) {
$message = $this->formatV1($record);
} else {
$message = $this->formatV0($record);
}
return $this->toJson($message) . "\n";
}
protected function formatV0(array $record)
{
if (empty($record['datetime'])) {
$record['datetime'] = gmdate('c');
}
$message = array(
'@timestamp' => $record['datetime'],
'@source' => $this->systemName,
'@fields' => array(),
);
if (isset($record['message'])) {
$message['@message'] = $record['message'];
}
if (isset($record['channel'])) {
$message['@tags'] = array($record['channel']);
$message['@fields']['channel'] = $record['channel'];
}
if (isset($record['level'])) {
$message['@fields']['level'] = $record['level'];
}
if ($this->applicationName) {
$message['@type'] = $this->applicationName;
}
if (isset($record['extra']['server'])) {
$message['@source_host'] = $record['extra']['server'];
}
if (isset($record['extra']['url'])) {
$message['@source_path'] = $record['extra']['url'];
}
if (!empty($record['extra'])) {
foreach ($record['extra'] as $key => $val) {
$message['@fields'][$this->extraPrefix . $key] = $val;
}
}
if (!empty($record['context'])) {
foreach ($record['context'] as $key => $val) {
$message['@fields'][$this->contextPrefix . $key] = $val;
}
}
return $message;
}
protected function formatV1(array $record)
{
if (empty($record['datetime'])) {
$record['datetime'] = gmdate('c');
}
$message = array(
'@timestamp' => $record['datetime'],
'@version' => 1,
'host' => $this->systemName,
);
if (isset($record['message'])) {
$message['message'] = $record['message'];
}
if (isset($record['channel'])) {
$message['type'] = $record['channel'];
$message['channel'] = $record['channel'];
}
if (isset($record['level_name'])) {
$message['level'] = $record['level_name'];
}
if ($this->applicationName) {
$message['type'] = $this->applicationName;
}
if (!empty($record['extra'])) {
foreach ($record['extra'] as $key => $val) {
$message[$this->extraPrefix . $key] = $val;
}
}
if (!empty($record['context'])) {
foreach ($record['context'] as $key => $val) {
$message[$this->contextPrefix . $key] = $val;
}
}
return $message;
}
}
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