/**
* Get changes as a stream.
*
* This method similar to the getChanges() method. But instead of returning
* the set of changes, it returns the connection stream from which the response
* can be read line by line. This is useful when you want to continuously get changes
* as they occur. Filtered changes feed is not supported by this method.
*
* @param array $params
* @param bool $raw
* @return resource
* @throws HTTPException
*/
public function getChangesAsStream(array $params = array())
{
// Set feed to continuous.
if (!isset($params['feed']) || $params['feed'] != 'continuous') {
$params['feed'] = 'continuous';
}
$path = '/' . $this->databaseName . '/_changes';
$connectionOptions = $this->getHttpClient()->getOptions();
$streamClient = new StreamClient($connectionOptions['host'], $connectionOptions['port'], $connectionOptions['username'], $connectionOptions['password'], $connectionOptions['ip'], $connectionOptions['ssl'], $connectionOptions['path']);
foreach ($params as $key => $value) {
if (isset($params[$key]) === true && is_bool($value) === true) {
$params[$key] = $value ? 'true' : 'false';
}
}
if (count($params) > 0) {
$query = http_build_query($params);
$path = $path . '?' . $query;
}
$stream = $streamClient->getConnection('GET', $path, null);
$headers = $streamClient->getStreamHeaders($stream);
if (empty($headers['status'])) {
throw HTTPException::readFailure($connectionOptions['ip'], $connectionOptions['port'], 'Received an empty response or not status code', 0);
} elseif ($headers['status'] != 200) {
$body = '';
while (!feof($stream)) {
$body .= fgets($stream);
}
throw HTTPException::fromResponse($path, new Response($headers['status'], $headers, $body));
}
// Everything seems okay. Return the connection resource.
return $stream;
}
