/**
* <p>
* Method produces JSON from <code>HppRequest</code> object.
* Carries out the following actions:
* <ul>
* <li>Validates inputs</li>
* <li>Generates defaults for security hash, order ID and time stamp (if required)</li>
* <li>Base64 encodes inputs</li>
* <li>Serialises request object to JSON</li>
* </ul>
* </p>
*
* @param HppRequest $hppRequest
* @return string
*/
public function requestToJson(HppRequest $hppRequest)
{
$this->logger->info("Converting HppRequest to JSON.");
$json = null;
//generate defaults
$this->logger->debug("Generating defaults.");
$hppRequest->generateDefaults($this->secret);
//validate request
$this->logger->debug("Validating request.");
ValidationUtils::validate($hppRequest);
//encode
$this->logger->debug("Encoding object.");
try {
$hppRequest = $hppRequest->encode(self::ENCODING_CHARSET);
} catch (Exception $e) {
$this->logger->error("Exception encoding HPP request.", $e);
throw new RealexException("Exception encoding HPP request.", $e);
}
//convert to JSON
$this->logger->debug("Converting to JSON.");
$json = JsonUtils::toJson($hppRequest);
return $json;
}