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lyrixxlyrixx
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[FrameworkBundle][Monolog] Added a new way to follow logs
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3 files changed

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3 files changed

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‎src/Symfony/Bridge/Monolog/Formatter/VarDumperFormatter.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <[email protected]>
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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 Symfony\Bridge\Monolog\Formatter;
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use Monolog\Formatter\FormatterInterface;
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use Symfony\Component\VarDumper\Cloner\VarCloner;
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/**
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* @author Grégoire Pineau <[email protected]>
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*/
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class VarDumperFormatter implements FormatterInterface
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{
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private $cloner;
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public function __construct(VarCloner $cloner = null)
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{
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$this->cloner = $cloner ?: new VarCloner();
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}
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public function format(array $record)
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{
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$record['context'] = $this->cloner->cloneVar($record['context']);
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$record['extra'] = $this->cloner->cloneVar($record['extra']);
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return $record;
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}
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public function formatBatch(array $records)
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{
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foreach ($records as $k => $record) {
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$record[$k] = $this->format($record);
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}
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return $records;
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}
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}

‎src/Symfony/Bridge/Monolog/Handler/ServerLogHandler.php

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<?php
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namespace Symfony\Bridge\Monolog\Handler;
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use Monolog\Handler\AbstractHandler;
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use Monolog\Logger;
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use Symfony\Bridge\Monolog\Formatter\VarDumperFormatter;
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class ServerLogHandler extends AbstractHandler
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{
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private $host;
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private $context;
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private $socket;
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public function __construct($host, $level = Logger::DEBUG, $bubble = true, $context = array())
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{
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parent::__construct($level, $bubble);
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if (false === strpos($host, '://')) {
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$host = 'tcp://'.$host;
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}
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$this->host = $host;
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$this->context = stream_context_create($context);
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}
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/**
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* {@inheritdoc}
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*/
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public function handle(array $record)
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{
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if (!$this->isHandling($record)) {
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return false;
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}
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set_error_handler(self::class.'::nullErrorHandler');
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try {
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if (!$this->socket = $this->socket ?: $this->createSocket()) {
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return false === $this->bubble;
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}
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$recordFormatted = $this->formatRecord($record);
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if (!fwrite($this->socket, $recordFormatted)) {
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fclose($this->socket);
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// Let's retry: the persistent connection might just be stale
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if ($this->socket = $this->createSocket()) {
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fwrite($this->socket, $recordFormatted);
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}
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}
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} finally {
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restore_error_handler();
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}
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return false === $this->bubble;
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}
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/**
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* {@inheritdoc}
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*/
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protected function getDefaultFormatter()
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{
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return new VarDumperFormatter();
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}
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private static function nullErrorHandler()
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{
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}
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private function createSocket()
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{
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$socket = stream_socket_client($this->host, $errno, $errstr, 0, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT | STREAM_CLIENT_PERSISTENT, $this->context);
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if ($socket) {
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stream_set_blocking($socket, false);
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}
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return $socket;
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}
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private function formatRecord(array $record)
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{
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if ($this->processors) {
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foreach ($this->processors as $processor) {
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$record = call_user_func($processor, $record);
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}
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}
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$recordFormatted = $this->getFormatter()->format($record);
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foreach (array('log_uuid', 'uuid', 'uid') as $key) {
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if (isset($record['extra'][$key])) {
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$recordFormatted['log_id'] = $record['extra'][$key];
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break;
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}
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}
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return base64_encode(serialize($recordFormatted))."\n";
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}
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}

‎src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <[email protected]>
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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 Symfony\Bundle\WebServerBundle\Command;
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use Symfony\Component\Console\Command\Command;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
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use Symfony\Component\VarDumper\Cloner\Data;
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use Symfony\Component\VarDumper\Dumper\CliDumper;
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/**
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* @author Grégoire Pineau <[email protected]>
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*/
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class ServerLogCommand extends Command
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{
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private $dumper;
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private $output;
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private $el;
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private static $levelColorMap = array(
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100 => 'fg=white',
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200 => 'fg=green',
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250 => 'fg=blue',
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300 => 'fg=cyan',
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400 => 'fg=yellow',
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500 => 'fg=red',
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550 => 'fg=red',
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600 => 'fg=white;bg=red',
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);
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private static $bgColor = array(
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'black',
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'blue',
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'cyan',
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'green',
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'magenta',
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'red',
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'white',
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'yellow',
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);
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protected function configure()
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{
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$this
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->setName('server:log')
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->setDescription('Start a log server that displays logs in real time')
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->addOption('host', null, InputOption::VALUE_REQUIRED, 'The server host', '0:9911')
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->addOption('date-format', null, InputOption::VALUE_REQUIRED, 'The date format', 'H:i:s')
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->addOption('format', null, InputOption::VALUE_REQUIRED, 'The line format', '%s <%s>%-9s</> <options=bold>%-8.8s</> %s')
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->addOption('show-context', null, InputOption::VALUE_NONE, 'Display the context')
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->addOption('show-extra', null, InputOption::VALUE_NONE, 'Display the extra')
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->addOption('filter', null, InputOption::VALUE_REQUIRED, 'An expression to filter log. Example: record[\'level\'] > 200 or record[\'channel\'] in [\'app\', \'doctrine\']"')
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;
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}
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protected function initialize(InputInterface $input, OutputInterface $output)
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{
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$this->dumper = new CliDumper();
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$this->dumper->setOutput($this->output = fopen('php://memory', 'r+b'));
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if ($input->getOption('filter')) {
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if (!class_exists(ExpressionLanguage::class)) {
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throw new \LogicException('Package "symfony/expression-language" is required to use the "filter" option.');
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}
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$this->el = new ExpressionLanguage();
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}
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}
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protected function execute(InputInterface $input, OutputInterface $output)
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{
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if (false === strpos($host = $input->getOption('host'), '://')) {
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$host = 'tcp://'.$host;
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}
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if (!$socket = stream_socket_server($host, $errno, $errstr)) {
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throw new \RuntimeException(sprintf('Server start failed on "%s": %s %s.', $host, $errstr, $errno));
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}
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$this->displayLog($input, $output, 0, array(
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'datetime' => new \DateTime(),
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'level' => 100,
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'level_name' => 'info',
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'channel' => 'app',
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'message' => sprintf('Listening on <comment>%s</comment>', $host).PHP_EOL,
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'context' => array(),
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'extra' => array(),
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));
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$logs = $this->getLogs($socket);
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$filter = $input->getOption('filter');
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foreach ($logs as $clientId => $message) {
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$record = unserialize(base64_decode($message));
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// Impossible to decode the message, give up.
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if (false === $record) {
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continue;
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}
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if ($filter && !$this->el->evaluate($filter, $record)) {
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continue;
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}
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$this->displayLog($input, $output, $clientId, $record);
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}
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}
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private function getLogs($socket)
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{
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$sockets = array((int) $socket => $socket);
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$write = array();
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while (true) {
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$read = $sockets;
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stream_select($read, $write, $write, null);
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foreach ($read as $stream) {
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if ($socket === $stream) {
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$stream = stream_socket_accept($socket);
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$sockets[(int) $stream] = $stream;
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} elseif (feof($stream)) {
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unset($sockets[(int) $stream]);
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fclose($stream);
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} else {
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yield (int) $stream => fgets($stream);
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}
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}
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}
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}
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private function displayLog(InputInterface $input, OutputInterface $output, $clientId, array $record)
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{
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$record = $this->replacePlaceHolder($output, $record);
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$format = $input->getOption('format');
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$date = $record['datetime']->format($input->getOption('date-format'));
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if (isset($record['log_id'])) {
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$clientId = unpack('H*', $record['log_id'])[1];
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}
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$logBlock = sprintf('<bg=%s> </>', self::$bgColor[$clientId % 8]);
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$levelColor = self::$levelColorMap[$record['level']];
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$message = $logBlock.sprintf($format, $date, $levelColor, $record['level_name'], $record['channel'], $record['message']);
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$output->writeln($message);
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if ($record['context'] && $input->getOption('show-context') && $record['context']->getRawData()[0][0]) {
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$output->writeln(sprintf('%sContext %s', $logBlock, $this->dumpData($output, $record['context'])));
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}
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if ($record['extra'] && $input->getOption('show-extra') && $record['extra']->getRawData()[0][0]) {
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$output->writeln(sprintf('%sExtra %s', $logBlock, $this->dumpData($output, $record['extra'])));
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}
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}
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private function replacePlaceHolder(OutputInterface $output, array $record)
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{
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$message = $record['message'];
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if (false === strpos($message, '{')) {
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return $record;
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}
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$context = $record['context'];
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$replacements = array();
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foreach ($context->getRawData()[1] as $k => $v) {
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$replacements['"{'.$k.'}"'] = sprintf('<comment>%s</>', $this->dumpData($output, $context->seek($k), false));
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}
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$record['message'] = strtr($message, $replacements);
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return $record;
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}
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private function dumpData(OutputInterface $output, Data $data, $colors = true, $maxDepth = 0)
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{
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if ($output->isDecorated()) {
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$this->dumper->setColors($colors);
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}
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$this->dumper->dump($data);
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$dump = stream_get_contents($this->output, -1, 0);
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rewind($this->output);
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ftruncate($this->output, 0);
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return rtrim($dump);
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}
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}

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