<?php
/*
* This file is part of the Monolog package.
*
* (c) Jordi Boggiano <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Monolog\Formatter;
use Exception;
use Throwable;
/**
* Encodes whatever record data is passed to it as json
*
* This can be useful to log to databases or remote APIs
*
* @author Jordi Boggiano <[email protected]>
*/
class JsonFormatter extends NormalizerFormatter
{
const BATCH_MODE_JSON = 1;
const BATCH_MODE_NEWLINES = 2;
protected $batchMode;
protected $appendNewline;
/**
* @var bool
*/
protected $includeStacktraces = false;
/**
* @param int $batchMode
*/
public function __construct($batchMode = self::BATCH_MODE_JSON, $appendNewline = true)
{
$this->batchMode = $batchMode;
$this->appendNewline = $appendNewline;
}
/**
* The batch mode option configures the formatting style for
* multiple records. By default, multiple records will be
* formatted as a JSON-encoded array. However, for
* compatibility with some API endpoints, alternative styles
* are available.
*
* @return int
*/
public function getBatchMode()
{
return $this->batchMode;
}
/**
* True if newlines are appended to every formatted record
*
* @return bool
*/
public function isAppendingNewlines()
{
return $this->appendNewline;
}
/**
* {@inheritdoc}
*/
public function format(array $record)
{
return $this->toJson($this->normalize($record), true) . ($this->appendNewline ? "\n" : '');
}
/**
* {@inheritdoc}
*/
public function formatBatch(array $records)
{
switch ($this->batchMode) {
case static::BATCH_MODE_NEWLINES:
return $this->formatBatchNewlines($records);
case static::BATCH_MODE_JSON:
default:
return $this->formatBatchJson($records);
}
}
/**
* @param bool $include
*/
public function includeStacktraces($include = true)
{
$this->includeStacktraces = $include;
}
/**
* Return a JSON-encoded array of records.
*
* @param array $records
* @return string
*/
protected function formatBatchJson(array $records)
{
return $this->toJson($this->normalize($records), true);
}
/**
* Use new lines to separate records instead of a
* JSON-encoded array.
*
* @param array $records
* @return string
*/
protected function formatBatchNewlines(array $records)
{
$instance = $this;
$oldNewline = $this->appendNewline;
$this->appendNewline = false;
array_walk($records, function (&$value, $key) use ($instance) {
$value = $instance->format($value);
});
$this->appendNewline = $oldNewline;
return implode("\n", $records);
}
/**
* Normalizes given $data.
*
* @param mixed $data
*
* @return mixed
*/
protected function normalize($data)
{
if (is_array($data) || $data instanceof \Traversable) {
$normalized = array();
$count = 1;
foreach ($data as $key => $value) {
if ($count++ >= 1000) {
$normalized['...'] = 'Over 1000 items, aborting normalization';
break;
}
$normalized[$key] = $this->normalize($value);
}
return $normalized;
}
if ($data instanceof Exception || $data instanceof Throwable) {
return $this->normalizeException($data);
}
return $data;
}
/**
* Normalizes given exception with or without its own stack trace based on
* `includeStacktraces` property.
*
* @param Exception|Throwable $e
*
* @return array
*/
protected function normalizeException($e)
{
// TODO 2.0 only check for Throwable
if (!$e instanceof Exception && !$e instanceof Throwable) {
throw new \InvalidArgumentException('Exception/Throwable expected, got '.gettype($e).' / '.get_class($e));
}
$data = array(
'class' => get_class($e),
'message' => $e->getMessage(),
'code' => $e->getCode(),
'file' => $e->getFile().':'.$e->getLine(),
);
if ($this->includeStacktraces) {
$trace = $e->getTrace();
foreach ($trace as $frame) {
if (isset($frame['file'])) {
$data['trace'][] = $frame['file'].':'.$frame['line'];
} elseif (isset($frame['function']) && $frame['function'] === '{closure}') {
// We should again normalize the frames, because it might contain invalid items
$data['trace'][] = $frame['function'];
} else {
// We should again normalize the frames, because it might contain invalid items
$data['trace'][] = $this->normalize($frame);
}
}
}
if ($previous = $e->getPrevious()) {
$data['previous'] = $this->normalizeException($previous);
}
return $data;
}
}