190 lines
4.9 KiB
PHP
190 lines
4.9 KiB
PHP
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<?php declare(strict_types=1);
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/*
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* This file is part of the Monolog package.
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*
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* (c) Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Monolog\Handler;
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use Monolog\Formatter\ChromePHPFormatter;
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use Monolog\Formatter\FormatterInterface;
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use Monolog\Level;
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use Monolog\Utils;
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use Monolog\LogRecord;
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use Monolog\DateTimeImmutable;
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/**
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* Handler sending logs to the ChromePHP extension (http://www.chromephp.com/)
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*
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* This also works out of the box with Firefox 43+
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*
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* @author Christophe Coevoet <stof@notk.org>
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*/
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class ChromePHPHandler extends AbstractProcessingHandler
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{
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use WebRequestRecognizerTrait;
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/**
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* Version of the extension
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*/
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protected const VERSION = '4.0';
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/**
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* Header name
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*/
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protected const HEADER_NAME = 'X-ChromeLogger-Data';
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/**
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* Regular expression to detect supported browsers (matches any Chrome, or Firefox 43+)
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*/
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protected const USER_AGENT_REGEX = '{\b(?:Chrome/\d+(?:\.\d+)*|HeadlessChrome|Firefox/(?:4[3-9]|[5-9]\d|\d{3,})(?:\.\d)*)\b}';
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protected static bool $initialized = false;
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/**
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* Tracks whether we sent too much data
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*
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* Chrome limits the headers to 4KB, so when we sent 3KB we stop sending
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*/
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protected static bool $overflowed = false;
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/** @var mixed[] */
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protected static array $json = [
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'version' => self::VERSION,
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'columns' => ['label', 'log', 'backtrace', 'type'],
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'rows' => [],
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];
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protected static bool $sendHeaders = true;
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public function __construct(int|string|Level $level = Level::Debug, bool $bubble = true)
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{
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parent::__construct($level, $bubble);
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if (!function_exists('json_encode')) {
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throw new \RuntimeException('PHP\'s json extension is required to use Monolog\'s ChromePHPHandler');
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}
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}
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/**
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* @inheritDoc
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*/
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public function handleBatch(array $records): void
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{
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if (!$this->isWebRequest()) {
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return;
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}
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$messages = [];
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foreach ($records as $record) {
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if ($record->level < $this->level) {
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continue;
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}
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$message = $this->processRecord($record);
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$messages[] = $message;
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}
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if (\count($messages) > 0) {
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$messages = $this->getFormatter()->formatBatch($messages);
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self::$json['rows'] = array_merge(self::$json['rows'], $messages);
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$this->send();
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}
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}
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/**
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* @inheritDoc
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*/
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protected function getDefaultFormatter(): FormatterInterface
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{
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return new ChromePHPFormatter();
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}
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/**
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* Creates & sends header for a record
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*
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* @see sendHeader()
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* @see send()
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*/
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protected function write(LogRecord $record): void
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{
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if (!$this->isWebRequest()) {
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return;
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}
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self::$json['rows'][] = $record->formatted;
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$this->send();
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}
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/**
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* Sends the log header
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*
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* @see sendHeader()
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*/
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protected function send(): void
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{
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if (self::$overflowed || !self::$sendHeaders) {
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return;
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}
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if (!self::$initialized) {
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self::$initialized = true;
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self::$sendHeaders = $this->headersAccepted();
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if (!self::$sendHeaders) {
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return;
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}
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self::$json['request_uri'] = $_SERVER['REQUEST_URI'] ?? '';
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}
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$json = Utils::jsonEncode(self::$json, Utils::DEFAULT_JSON_FLAGS & ~JSON_UNESCAPED_UNICODE, true);
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$data = base64_encode($json);
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if (strlen($data) > 3 * 1024) {
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self::$overflowed = true;
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$record = new LogRecord(
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message: 'Incomplete logs, chrome header size limit reached',
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level: Level::Warning,
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channel: 'monolog',
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datetime: new DateTimeImmutable(true),
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);
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self::$json['rows'][count(self::$json['rows']) - 1] = $this->getFormatter()->format($record);
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$json = Utils::jsonEncode(self::$json, Utils::DEFAULT_JSON_FLAGS & ~JSON_UNESCAPED_UNICODE, true);
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$data = base64_encode($json);
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}
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if (trim($data) !== '') {
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$this->sendHeader(static::HEADER_NAME, $data);
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}
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}
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/**
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* Send header string to the client
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*/
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protected function sendHeader(string $header, string $content): void
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{
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if (!headers_sent() && self::$sendHeaders) {
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header(sprintf('%s: %s', $header, $content));
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}
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}
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/**
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* Verifies if the headers are accepted by the current user agent
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*/
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protected function headersAccepted(): bool
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{
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if (!isset($_SERVER['HTTP_USER_AGENT'])) {
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return false;
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}
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return preg_match(static::USER_AGENT_REGEX, $_SERVER['HTTP_USER_AGENT']) === 1;
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}
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}
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