87 lines
3.0 KiB
PHP
87 lines
3.0 KiB
PHP
<?php
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namespace KTXC\Logger;
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use Psr\Log\LoggerInterface;
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/**
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* Simple file-based PSR-3 logger that writes plain-text lines.
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*
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* Each entry is formatted as:
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* 2026-02-20 12:34:56.123456 message text
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*/
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class PlainFileLogger implements LoggerInterface
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{
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private string $logFile;
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/**
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* @param string $logDir Directory where log files are written
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* @param string $channel Logical channel name (used in filename)
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*/
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public function __construct(string $logDir, string $channel = 'app')
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{
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$this->logFile = rtrim($logDir, '/') . '/' . $channel . '.log';
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$this->ensureWritablePath();
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}
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public function emergency($message, array $context = []): void { $this->log('emergency', $message, $context); }
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public function alert($message, array $context = []): void { $this->log('alert', $message, $context); }
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public function critical($message, array $context = []): void { $this->log('critical', $message, $context); }
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public function error($message, array $context = []): void { $this->log('error', $message, $context); }
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public function warning($message, array $context = []): void { $this->log('warning', $message, $context); }
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public function notice($message, array $context = []): void { $this->log('notice', $message, $context); }
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public function info($message, array $context = []): void { $this->log('info', $message, $context); }
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public function debug($message, array $context = []): void { $this->log('debug', $message, $context); }
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public function log($level, $message, array $context = []): void
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{
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$this->ensureWritablePath();
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$dt = \DateTimeImmutable::createFromFormat('U.u', sprintf('%.6F', microtime(true)));
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$timestamp = $dt?->format('Y-m-d H:i:s.u') ?? date('Y-m-d H:i:s');
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$line = $timestamp . ' ' . $this->interpolate((string) $message, $context) . PHP_EOL;
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if (@file_put_contents($this->logFile, $line, FILE_APPEND | LOCK_EX) === false) {
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error_log(sprintf('Failed to write to log file: %s', $this->logFile));
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}
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}
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private function ensureWritablePath(): void
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{
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$logDir = dirname($this->logFile);
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if (!is_dir($logDir)) {
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@mkdir($logDir, 0777, true);
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}
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if (is_dir($logDir)) {
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@chmod($logDir, 0777);
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}
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if (!file_exists($this->logFile)) {
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@touch($this->logFile);
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}
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clearstatcache(true, $this->logFile);
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if (file_exists($this->logFile)) {
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@chmod($this->logFile, 0666);
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}
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}
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private function interpolate(string $message, array $context): string
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{
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if (!str_contains($message, '{')) {
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return $message;
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}
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$replace = [];
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foreach ($context as $key => $val) {
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if (is_array($val) || (is_object($val) && !method_exists($val, '__toString'))) {
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continue;
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}
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$replace['{' . $key . '}'] = (string) $val;
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}
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return strtr($message, $replace);
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}
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}
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