vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php line 157
<?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\Handler;use Monolog\Level;use Monolog\Utils;use Monolog\LogRecord;/*** Stores to any stream resource** Can be used to store into php://stderr, remote and local files, etc.** @author Jordi Boggiano <j.boggiano@seld.be>*/class StreamHandler extends AbstractProcessingHandler{protected const MAX_CHUNK_SIZE = 2147483647;/** 10MB */protected const DEFAULT_CHUNK_SIZE = 10 * 1024 * 1024;protected int $streamChunkSize;/** @var resource|null */protected $stream;protected string|null $url = null;private string|null $errorMessage = null;protected int|null $filePermission;protected bool $useLocking;/** @var true|null */private bool|null $dirCreated = null;/*** @param resource|string $stream If a missing path can't be created, an UnexpectedValueException will be thrown on first write* @param int|null $filePermission Optional file permissions (default (0644) are only for owner read/write)* @param bool $useLocking Try to lock log file before doing any writes** @throws \InvalidArgumentException If stream is not a resource or string*/public function __construct($stream, int|string|Level $level = Level::Debug, bool $bubble = true, ?int $filePermission = null, bool $useLocking = false){parent::__construct($level, $bubble);if (($phpMemoryLimit = Utils::expandIniShorthandBytes(ini_get('memory_limit'))) !== false) {if ($phpMemoryLimit > 0) {// use max 10% of allowed memory for the chunk size, and at least 100KB$this->streamChunkSize = min(static::MAX_CHUNK_SIZE, max((int) ($phpMemoryLimit / 10), 100 * 1024));} else {// memory is unlimited, set to the default 10MB$this->streamChunkSize = static::DEFAULT_CHUNK_SIZE;}} else {// no memory limit information, set to the default 10MB$this->streamChunkSize = static::DEFAULT_CHUNK_SIZE;}if (is_resource($stream)) {$this->stream = $stream;stream_set_chunk_size($this->stream, $this->streamChunkSize);} elseif (is_string($stream)) {$this->url = Utils::canonicalizePath($stream);} else {throw new \InvalidArgumentException('A stream must either be a resource or a string.');}$this->filePermission = $filePermission;$this->useLocking = $useLocking;}/*** @inheritDoc*/public function close(): void{if (null !== $this->url && is_resource($this->stream)) {fclose($this->stream);}$this->stream = null;$this->dirCreated = null;}/*** Return the currently active stream if it is open** @return resource|null*/public function getStream(){return $this->stream;}/*** Return the stream URL if it was configured with a URL and not an active resource*/public function getUrl(): ?string{return $this->url;}public function getStreamChunkSize(): int{return $this->streamChunkSize;}/*** @inheritDoc*/protected function write(LogRecord $record): void{if (!is_resource($this->stream)) {$url = $this->url;if (null === $url || '' === $url) {throw new \LogicException('Missing stream url, the stream can not be opened. This may be caused by a premature call to close().' . Utils::getRecordMessageForException($record));}$this->createDir($url);$this->errorMessage = null;set_error_handler([$this, 'customErrorHandler']);$stream = fopen($url, 'a');if ($this->filePermission !== null) {@chmod($url, $this->filePermission);}restore_error_handler();if (!is_resource($stream)) {$this->stream = null;throw new \UnexpectedValueException(sprintf('The stream or file "%s" could not be opened in append mode: '.$this->errorMessage, $url) . Utils::getRecordMessageForException($record));}stream_set_chunk_size($stream, $this->streamChunkSize);$this->stream = $stream;}$stream = $this->stream;if ($this->useLocking) {// ignoring errors here, there's not much we can do about themflock($stream, LOCK_EX);}$this->streamWrite($stream, $record);if ($this->useLocking) {flock($stream, LOCK_UN);}}/*** Write to stream* @param resource $stream*/protected function streamWrite($stream, LogRecord $record): void{fwrite($stream, (string) $record->formatted);}private function customErrorHandler(int $code, string $msg): bool{$this->errorMessage = preg_replace('{^(fopen|mkdir)\(.*?\): }', '', $msg);return true;}private function getDirFromStream(string $stream): ?string{$pos = strpos($stream, '://');if ($pos === false) {return dirname($stream);}if ('file://' === substr($stream, 0, 7)) {return dirname(substr($stream, 7));}return null;}private function createDir(string $url): void{// Do not try to create dir if it has already been tried.if (true === $this->dirCreated) {return;}$dir = $this->getDirFromStream($url);if (null !== $dir && !is_dir($dir)) {$this->errorMessage = null;set_error_handler([$this, 'customErrorHandler']);$status = mkdir($dir, 0777, true);restore_error_handler();if (false === $status && !is_dir($dir) && strpos((string) $this->errorMessage, 'File exists') === false) {throw new \UnexpectedValueException(sprintf('There is no existing directory at "%s" and it could not be created: '.$this->errorMessage, $dir));}}$this->dirCreated = true;}}