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<?php
namespace Liuggio\StatsdClient\Monolog\Formatter;
use Monolog\Formatter\LineFormatter;
/**
* Formats incoming records in order to be a perfect StatsD key.
*
* This is especially useful for logging to files
*
* @author Jordi Boggiano <j.boggiano@seld.be>
* @author Christophe Coevoet <stof@notk.org>
* @author Giulio De Donato <liuggio@gmail.com>
*/
class StatsDFormatter extends LineFormatter
{
const SIMPLE_FORMAT = "%channel%.%level_name%.%short_message%";
protected $numberOfWords;
protected $logContext;
protected $logExtra;
/**
* @param string $format The format of the message
* @param Boolean $logContext If true add multiple rows containing Context information
* @param Boolean $logExtra If true add multiple rows containing Extra information
* @param integer $numberOfWords The number of words to show.
*/
public function __construct($format = null, $logContext = true, $logExtra = true, $numberOfWords = 2)
{
$this->format = $format ? : static::SIMPLE_FORMAT;
$this->numberOfWords = $numberOfWords;
$this->logContext = $logContext;
$this->logExtra = $logExtra;
parent::__construct();
}
/**
* This function converts a long message into a string with the first N-words.
* eg. from: "Notified event "kernel.request" to listener "Symfony\Component\HttpKernel\EventListener"
* to: "Notified event"
*
* @param string $message The message to shortify.
*
* @return string
*/
public function getFirstWords($message)
{
$glue = '-';
$pieces = explode(' ', $message);
array_splice($pieces, $this->numberOfWords);
$shortMessage = preg_replace("/[^A-Za-z0-9?![:space:]]/", "-", implode($glue, $pieces));
return $shortMessage;
}
/**
* {@inheritdoc}
*/
public function format(array $record)
{
$vars = $this->normalize($record);
$firstRow = $this->format;
$output = array();
$vars['short_message'] = $this->getFirstWords($vars['message']);
foreach ($vars as $var => $val) {
$firstRow = str_replace('%' . $var . '%', $this->convertToString($val), $firstRow);
}
$output[] = $firstRow;
// creating more rows for context content
if ($this->logContext && isset($vars['context'])) {
foreach ($vars['context'] as $key => $parameter) {
$output[] = sprintf("%s.context.%s.%s", $firstRow, $key, $parameter);
}
}
// creating more rows for extra content
if ($this->logExtra && isset($vars['extra'])) {
foreach ($vars['extra'] as $key => $parameter) {
$output[] = sprintf("%s.extra.%s.%s", $firstRow, $key, $parameter);
}
}
return $output;
}
/**
* {@inheritdoc}
*/
public function formatBatch(array $records)
{
$output = array();
foreach ($records as $record) {
$output = array_merge($output, $this->format($record));
}
return $output;
}
}
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