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✏️ Editing: ApiCallAttemptMonitoringMiddleware.php

<?php

namespace Aws\ClientSideMonitoring;

use Aws\CommandInterface;
use Aws\Credentials\CredentialsInterface;
use Aws\Exception\AwsException;
use Aws\ResponseContainerInterface;
use Aws\ResultInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;

/**
 * @internal
 */
class ApiCallAttemptMonitoringMiddleware extends AbstractMonitoringMiddleware
{

/**
     * Standard middleware wrapper function with CSM options passed in.
     *
     * @param callable $credentialProvider
     * @param mixed  $options
     * @param string $region
     * @param string $service
     * @return callable
     */
    public static function wrap(
        callable $credentialProvider,
        $options,
        $region,
        $service
    ) {
        return function (callable $handler) use (
            $credentialProvider,
            $options,
            $region,
            $service
        ) {
            return new static(
                $handler,
                $credentialProvider,
                $options,
                $region,
                $service
            );
        };
    }

/**
     * {@inheritdoc}
     */
    public static function getRequestData(RequestInterface $request)
    {
        return [
            'Fqdn' => $request->getUri()->getHost(),
        ];
    }

/**
     * {@inheritdoc}
     */
    public static function getResponseData($klass)
    {
        if ($klass instanceof ResultInterface) {
            return [
                'AttemptLatency' => self::getResultAttemptLatency($klass),
                'DestinationIp' => self::getResultDestinationIp($klass),
                'DnsLatency' => self::getResultDnsLatency($klass),
                'HttpStatusCode' => self::getResultHttpStatusCode($klass),
                'XAmzId2' => self::getResultHeader($klass, 'x-amz-id-2'),
                'XAmzRequestId' => self::getResultHeader($klass, 'x-amz-request-id'),
                'XAmznRequestId' => self::getResultHeader($klass, 'x-amzn-RequestId'),
            ];
        }
        if ($klass instanceof AwsException) {
            return [
                'AttemptLatency' => self::getAwsExceptionAttemptLatency($klass),
                'AwsException' => substr(
                    self::getAwsExceptionErrorCode($klass),
                    0,
                    128
                ),
                'AwsExceptionMessage' => substr(
                    self::getAwsExceptionMessage($klass),
                    0,
                    512
                ),
                'DestinationIp' => self::getAwsExceptionDestinationIp($klass),
                'DnsLatency' => self::getAwsExceptionDnsLatency($klass),
                'HttpStatusCode' => self::getAwsExceptionHttpStatusCode($klass),
                'XAmzId2' => self::getAwsExceptionHeader($klass, 'x-amz-id-2'),
                'XAmzRequestId' => self::getAwsExceptionHeader(
                    $klass,
                    'x-amz-request-id'
                ),
                'XAmznRequestId' => self::getAwsExceptionHeader(
                    $klass,
                    'x-amzn-RequestId'
                ),
            ];
        }
        if ($klass instanceof \Exception) {
            return [
                'HttpStatusCode' => self::getExceptionHttpStatusCode($klass),
                'SdkException' => substr(
                    self::getExceptionCode($klass),
                    0,
                    128
                ),
                'SdkExceptionMessage' => substr(
                    self::getExceptionMessage($klass),
                    0,
                    512
                ),
                'XAmzId2' => self::getExceptionHeader($klass, 'x-amz-id-2'),
                'XAmzRequestId' => self::getExceptionHeader($klass, 'x-amz-request-id'),
                'XAmznRequestId' => self::getExceptionHeader($klass, 'x-amzn-RequestId'),
            ];
        }

throw new \InvalidArgumentException('Parameter must be an instance of ResultInterface, AwsException or Exception.');
    }

private static function getResultAttemptLatency(ResultInterface $result)
    {
        if (isset($result['@metadata']['transferStats']['http'])) {
            $attempt = end($result['@metadata']['transferStats']['http']);
            if (isset($attempt['total_time'])) {
                return (int) floor($attempt['total_time'] * 1000);
            }
        }
        return null;
    }

private static function getResultDestinationIp(ResultInterface $result)
    {
        if (isset($result['@metadata']['transferStats']['http'])) {
            $attempt = end($result['@metadata']['transferStats']['http']);
            if (isset($attempt['primary_ip'])) {
                return $attempt['primary_ip'];
            }
        }
        return null;
    }

private static function getResultDnsLatency(ResultInterface $result)
    {
        if (isset($result['@metadata']['transferStats']['http'])) {
            $attempt = end($result['@metadata']['transferStats']['http']);
            if (isset($attempt['namelookup_time'])) {
                return (int) floor($attempt['namelookup_time'] * 1000);
            }
        }
        return null;
    }

private static function getResultHttpStatusCode(ResultInterface $result)
    {
        return $result['@metadata']['statusCode'];
    }

private static function getAwsExceptionAttemptLatency(AwsException $e) {
        $attempt = $e->getTransferInfo();
        if (isset($attempt['total_time'])) {
            return (int) floor($attempt['total_time'] * 1000);
        }
        return null;
    }

private static function getAwsExceptionErrorCode(AwsException $e) {
        return $e->getAwsErrorCode();
    }

private static function getAwsExceptionMessage(AwsException $e) {
        return $e->getAwsErrorMessage();
    }

private static function getAwsExceptionDestinationIp(AwsException $e) {
        $attempt = $e->getTransferInfo();
        if (isset($attempt['primary_ip'])) {
            return $attempt['primary_ip'];
        }
        return null;
    }

private static function getAwsExceptionDnsLatency(AwsException $e) {
        $attempt = $e->getTransferInfo();
        if (isset($attempt['namelookup_time'])) {
            return (int) floor($attempt['namelookup_time'] * 1000);
        }
        return null;
    }

private static function getAwsExceptionHttpStatusCode(AwsException $e) {
        $response = $e->getResponse();
        if ($response !== null) {
            return $response->getStatusCode();
        }
        return null;
    }

private static function getExceptionHttpStatusCode(\Exception $e) {
        if ($e instanceof ResponseContainerInterface) {
            $response = $e->getResponse();
            if ($response instanceof ResponseInterface) {
                return $response->getStatusCode();
            }
        }
        return null;
    }

private static function getExceptionCode(\Exception $e) {
        if (!($e instanceof AwsException)) {
            return get_class($e);
        }
        return null;
    }

private static function getExceptionMessage(\Exception $e) {
        if (!($e instanceof AwsException)) {
            return $e->getMessage();
        }
        return null;
    }

/**
     * {@inheritdoc}
     */
    protected function populateRequestEventData(
        CommandInterface $cmd,
        RequestInterface $request,
        array $event
    ) {
        $event = parent::populateRequestEventData($cmd, $request, $event);
        $event['Type'] = 'ApiCallAttempt';
        return $event;
    }

/**
     * {@inheritdoc}
     */
    protected function populateResultEventData(
        $result,
        array $event
    ) {
        $event = parent::populateResultEventData($result, $event);

$provider = $this->credentialProvider;
        /** @var CredentialsInterface $credentials */
        $credentials = $provider()->wait();
        $event['AccessKey'] = $credentials->getAccessKeyId();
        $sessionToken = $credentials->getSecurityToken();
        if ($sessionToken !== null) {
            $event['SessionToken'] = $sessionToken;
        }
        if (empty($event['AttemptLatency'])) {
            $event['AttemptLatency'] = (int) (floor(microtime(true) * 1000) - $event['Timestamp']);
        }
        return $event;
    }
}

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