84 lines
2.0 KiB
PHP
84 lines
2.0 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace OpenTelemetry\SDK\Logs;
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use Psr\Log\InvalidArgumentException;
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use Psr\Log\LoggerInterface;
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use Psr\Log\LoggerTrait;
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use Psr\Log\LogLevel;
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use ReflectionClass;
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use Throwable;
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class SimplePsrFileLogger implements LoggerInterface
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{
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use LoggerTrait;
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private const DEFAULT_LOGGER_NAME = 'otel';
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private static ?array $logLevels = null;
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private string $filename;
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private string $loggerName ;
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/**
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* @param string $filename
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*/
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public function __construct(string $filename, string $loggerName = self::DEFAULT_LOGGER_NAME)
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{
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$this->filename = $filename;
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$this->loggerName = $loggerName;
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}
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/**
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* @psalm-suppress MoreSpecificImplementedParamType
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*/
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public function log($level, $message, array $context = []): void
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{
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$level = strtolower($level);
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if (!in_array($level, self::getLogLevels(), true)) {
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throw new InvalidArgumentException(
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sprintf('Invalid Log level: "%s"', $level)
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);
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}
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file_put_contents($this->filename, $this->formatLog((string) $level, (string) $message, $context), FILE_APPEND);
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}
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/**
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* @param string $level
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* @param string $message
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* @param array $context
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* @return string
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*/
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private function formatLog(string $level, string $message, array $context = []): string
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{
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try {
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$encodedContext = json_encode($context, JSON_THROW_ON_ERROR);
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} catch (Throwable $t) {
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$encodedContext = sprintf('(Could not encode context: %s)', $t->getMessage());
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}
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return sprintf(
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'[%s] %s %s: %s %s%s',
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date(DATE_RFC3339_EXTENDED),
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$this->loggerName,
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$level,
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$message,
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$encodedContext,
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PHP_EOL
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);
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}
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/**
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* @return array
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*/
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private static function getLogLevels(): array
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{
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return self::$logLevels ?? self::$logLevels = (new ReflectionClass(LogLevel::class))->getConstants();
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}
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}
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