/**
* Get the currently active brokers participating in a particular topic.
*
* @param string $topic the topic to get the brokers for
*
* @return array an array of brokers (int) that are participating in the topic
*/
public function brokers($topic)
{
$topicPath = sprintf(self::TOPIC_PATH, $topic);
if (!@$this->zookeeper->exists($topicPath)) {
if ($this->zookeeper->getState() != Zookeeper::CONNECTED_STATE) {
$msg = 'Cannot connect to Zookeeper to fetch brokers for topic ' . $topic;
throw new Kafka_Exception_ZookeeperConnection($msg);
}
return array();
}
$children = $this->zookeeper->getChildren($topicPath);
if (empty($children)) {
return array();
}
$results = array();
foreach ($children as $child) {
$results[] = intval(str_replace($topicPath, '', $child));
}
return $results;
}
