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<?php declare(strict_types=1);
/*
* 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;
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 <j.boggiano@seld.be>
*
* @phpstan-import-type Record from \Monolog\Logger
*/
class JsonFormatter extends NormalizerFormatter
{
public const BATCH_MODE_JSON = 1;
public const BATCH_MODE_NEWLINES = 2;
/** @var self::BATCH_MODE_* */
protected $batchMode;
/** @var bool */
protected $appendNewline;
/** @var bool */
protected $ignoreEmptyContextAndExtra;
/** @var bool */
protected $includeStacktraces = false;
/**
* @param self::BATCH_MODE_* $batchMode
*/
public function __construct(int $batchMode = self::BATCH_MODE_JSON, bool $appendNewline = true, bool $ignoreEmptyContextAndExtra = false, bool $includeStacktraces = false)
{
$this->batchMode = $batchMode;
$this->appendNewline = $appendNewline;
$this->ignoreEmptyContextAndExtra = $ignoreEmptyContextAndExtra;
$this->includeStacktraces = $includeStacktraces;
parent::__construct();
}
/**
* 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.
*/
public function getBatchMode(): int
{
return $this->batchMode;
}
/**
* True if newlines are appended to every formatted record
*/
public function isAppendingNewlines(): bool
{
return $this->appendNewline;
}
/**
* {@inheritDoc}
*/
public function format(array $record): string
{
$normalized = $this->normalize($record);
if (isset($normalized['context']) && $normalized['context'] === []) {
if ($this->ignoreEmptyContextAndExtra) {
unset($normalized['context']);
} else {
$normalized['context'] = new \stdClass;
}
}
if (isset($normalized['extra']) && $normalized['extra'] === []) {
if ($this->ignoreEmptyContextAndExtra) {
unset($normalized['extra']);
} else {
$normalized['extra'] = new \stdClass;
}
}
return $this->toJson($normalized, true) . ($this->appendNewline ? "\n" : '');
}
/**
* {@inheritDoc}
*/
public function formatBatch(array $records): string
{
switch ($this->batchMode) {
case static::BATCH_MODE_NEWLINES:
return $this->formatBatchNewlines($records);
case static::BATCH_MODE_JSON:
default:
return $this->formatBatchJson($records);
}
}
/**
* @return self
*/
public function includeStacktraces(bool $include = true): self
{
$this->includeStacktraces = $include;
return $this;
}
/**
* Return a JSON-encoded array of records.
*
* @phpstan-param Record[] $records
*/
protected function formatBatchJson(array $records): string
{
return $this->toJson($this->normalize($records), true);
}
/**
* Use new lines to separate records instead of a
* JSON-encoded array.
*
* @phpstan-param Record[] $records
*/
protected function formatBatchNewlines(array $records): string
{
$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, int $depth = 0)
{
if ($depth > $this->maxNormalizeDepth) {
return 'Over '.$this->maxNormalizeDepth.' levels deep, aborting normalization';
}
if (is_array($data)) {
$normalized = [];
$count = 1;
foreach ($data as $key => $value) {
if ($count++ > $this->maxNormalizeItemCount) {
$normalized['...'] = 'Over '.$this->maxNormalizeItemCount.' items ('.count($data).' total), aborting normalization';
break;
}
$normalized[$key] = $this->normalize($value, $depth + 1);
}
return $normalized;
}
if (is_object($data)) {
if ($data instanceof \DateTimeInterface) {
return $this->formatDate($data);
}
if ($data instanceof Throwable) {
return $this->normalizeException($data, $depth);
}
// if the object has specific json serializability we want to make sure we skip the __toString treatment below
if ($data instanceof \JsonSerializable) {
return $data;
}
if (method_exists($data, '__toString')) {
return $data->__toString();
}
return $data;
}
if (is_resource($data)) {
return parent::normalize($data);
}
return $data;
}
/**
* Normalizes given exception with or without its own stack trace based on
* `includeStacktraces` property.
*
* {@inheritDoc}
*/
protected function normalizeException(Throwable $e, int $depth = 0): array
{
$data = parent::normalizeException($e, $depth);
if (!$this->includeStacktraces) {
unset($data['trace']);
}
return $data;
}
}
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