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<?php
declare(strict_types=1);
namespace OpenTelemetry\API\Behavior\Internal;
use OpenTelemetry\API\Behavior\Internal\LogWriter\ErrorLogWriter;
use OpenTelemetry\API\Behavior\Internal\LogWriter\LogWriterInterface;
use OpenTelemetry\API\Behavior\Internal\LogWriter\NoopLogWriter;
use OpenTelemetry\API\Behavior\Internal\LogWriter\Psr3LogWriter;
use OpenTelemetry\API\Behavior\Internal\LogWriter\StreamLogWriter;
use OpenTelemetry\API\Instrumentation\ConfigurationResolver;
use OpenTelemetry\API\LoggerHolder;
class LogWriterFactory
{
private const OTEL_PHP_LOG_DESTINATION = 'OTEL_PHP_LOG_DESTINATION';
public function create(): LogWriterInterface
{
$dest = (new ConfigurationResolver())->getString(self::OTEL_PHP_LOG_DESTINATION);
$logger = LoggerHolder::get();
switch ($dest) {
case 'none':
return new NoopLogWriter();
case 'stderr':
return new StreamLogWriter('php://stderr');
case 'stdout':
return new StreamLogWriter('php://stdout');
case 'psr3':
if ($logger) {
return new Psr3LogWriter($logger);
}
error_log('OpenTelemetry: cannot use OTEL_PHP_LOG_DESTINATION=psr3 without providing a PSR-3 logger');
//default to error log
return new ErrorLogWriter();
case 'error_log':
return new ErrorLogWriter();
default:
if ($logger) {
return new Psr3LogWriter($logger);
}
return new ErrorLogWriter();
}
}
}
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