/**
* Return an appropriate signature object for a a client based on a description
*
* @param ServiceDescription $description Description that holds a signature option
* @param Collection $config Configuration options
*
* @return SignatureInterface
* @throws InvalidArgumentException
*/
protected function getSignature(ServiceDescription $description, Collection $config)
{
if (!($signature = $config->get(Options::SIGNATURE))) {
switch ($description->getData('signatureVersion')) {
case 'v2':
$signature = new SignatureV2();
break;
case 'v3':
$signature = new SignatureV3();
break;
case 'v3https':
$signature = new SignatureV3Https();
break;
case 'v4':
$signature = new SignatureV4();
break;
default:
throw new InvalidArgumentException('Service description does not specify a valid signatureVersion');
}
}
// Allow a custom service name or region value to be provided
if ($signature instanceof EndpointSignatureInterface) {
// Determine the service name to use when signing
if (!($service = $config->get(Options::SIGNATURE_SERVICE))) {
if (!($service = $description->getData('signingName'))) {
$service = $description->getData('endpointPrefix');
}
}
$signature->setServiceName($service);
// Determine the region to use when signing requests
if (!($region = $config->get(Options::SIGNATURE_REGION))) {
$region = $config->get(Options::REGION);
}
$signature->setRegionName($region);
}
return $signature;
}
/**
* Return an appropriate signature object for a a client based on a description
*
* @param ServiceDescription $description Description that holds a signature option
* @param Collection $config Configuration options
*
* @throws InvalidArgumentException
*/
protected function addSignature(ServiceDescription $description, Collection $config)
{
if (!($signature = $config->get(Options::SIGNATURE))) {
if (!$description->getData('signatureVersion')) {
throw new InvalidArgumentException('The service description does not specify a signatureVersion');
}
switch ($description->getData('signatureVersion')) {
case 'v2':
$signature = new SignatureV2();
break;
case 'v3':
$signature = new SignatureV3();
break;
case 'v3https':
$signature = new SignatureV3Https();
break;
case 'v4':
$signature = new SignatureV4();
break;
}
}
// Allow a custom service name or region value to be provided
if ($signature instanceof EndpointSignatureInterface) {
$signature->setServiceName($config->get(Options::SIGNATURE_SERVICE) ?: $description->getData('signingName'));
$signature->setRegionName($config->get(Options::SIGNATURE_REGION));
}
$config->set(Options::SIGNATURE, $signature);
}
