public function getStream($host, $lockKey = null)
{
if (!$lockKey) {
$lockKey = uniqid($host);
}
list($hostname, $port) = explode(':', $host);
// find unlock stream
if (isset(self::$stream[$host])) {
foreach (self::$stream[$host] as $key => $info) {
if ($info['locked']) {
continue;
} else {
self::$stream[$host][$key]['locked'] = true;
$info['stream']->connect();
return array('key' => $key, 'stream' => $info['stream']);
}
}
}
// no idle stream
$stream = new \Kafka\Socket($hostname, $port, $this->getStreamOption('RecvTimeoutSec'), $this->getStreamOption('RecvTimeoutUsec'), $this->getStreamOption('SendTimeoutSec'), $this->getStreamOption('SendTimeoutUsec'));
$stream->connect();
self::$stream[$host][$lockKey] = array('locked' => true, 'stream' => $stream);
return array('key' => $lockKey, 'stream' => $stream);
} /**
* @param array $topics
*/
private function loadTopicDetail(array $topics)
{
if ($this->client === null) {
throw new \Kafka\Exception('client was not provided');
}
$response = null;
foreach ($this->hostList as $host) {
try {
$response = null;
$stream = $this->client->getStream($host);
$conn = $stream['stream'];
$encoder = new \Kafka\Protocol\Encoder($conn);
$encoder->metadataRequest($topics);
$decoder = new \Kafka\Protocol\Decoder($conn);
$response = $decoder->metadataResponse();
$this->client->freeStream($stream['key']);
break;
} catch (\Kafka\Exception $e) {
// keep trying
}
}
if ($response) {
// Merge arrays using "+" operator to preserve key (which are broker IDs)
// instead of array_merge (which reindex numeric keys)
$this->brokers = $response['brokers'] + $this->brokers;
$this->topics = array_merge($response['topics'], $this->topics);
} else {
throw new \Kafka\Exception('Could not connect to any kafka brokers');
}
}
