/**
* Will call for the measurement protocol endpoint
*
* @param \AppserverIo\Psr\HttpMessage\RequestInterface $request A request object
* @param \AppserverIo\Psr\HttpMessage\ResponseInterface $response A response object
* @param \AppserverIo\Server\Interfaces\RequestContextInterface $requestContext A requests context instance
*
* @return null
*/
public function call(RequestInterface $request, ResponseInterface $response, RequestContextInterface $requestContext)
{
// merge default and configured parameters into our list
$parameters = array_merge($this->defaultParameters, $this->parameters);
// we want the request to be like it came from the same host, so we will reuse part of it
$parameters['ua'] = $request->getHeader(HttpProtocol::HEADER_USER_AGENT);
$parameters['uip'] = $requestContext->getServerVar(ServerVars::REMOTE_ADDR);
// the client will be a random UUID, at least if we do not get a matching cookie
if ($request->hasHeader(HttpProtocol::HEADER_COOKIE)) {
// the user is known to us
$cookie = $request->getHeader(HttpProtocol::HEADER_COOKIE);
$matches = array();
preg_match('/_ga=GA[0-9]\\.[0-9]\\.(.+)/', $cookie, $matches);
if (isset($matches[1])) {
$parameters['cid'] = $matches[1];
// remove the cookie to avoid additional calls
$response->removeCookie('_ga');
// filter the parameters for a known cookie
$parameters = $this->filterParameters($parameters, self::COOKIE_PRESENT);
}
}
// if there is no known client id we will set one randomly
if (!isset($parameters['cid'])) {
$uuid4 = Uuid::uuid4();
$parameters['cid'] = $uuid4->toString();
// filter the parameters for usage without cookie
$parameters = $this->filterParameters($parameters, self::COOKIE_NOT_PRESENT);
}
// make the actual call
$this->sendToService($parameters);
}
