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<?php
namespace Http\Client\Common\HttpClientPool;
use Http\Client\Common\Exception\HttpClientNotFoundException;
use Http\Client\Common\HttpClientPool;
/**
* RoundRobinClientPool will choose the next client in the pool.
*
* @author Joel Wurtz <joel.wurtz@gmail.com>
*/
final class RoundRobinClientPool extends HttpClientPool
{
/**
* {@inheritdoc}
*/
protected function chooseHttpClient()
{
$last = current($this->clientPool);
do {
$client = next($this->clientPool);
if (false === $client) {
$client = reset($this->clientPool);
if (false === $client) {
throw new HttpClientNotFoundException('Cannot choose a http client as there is no one present in the pool');
}
}
// Case when there is only one and the last one has been disabled
if ($last === $client && $client->isDisabled()) {
throw new HttpClientNotFoundException('Cannot choose a http client as there is no one enabled in the pool');
}
} while ($client->isDisabled());
return $client;
}
}
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