public function testCanGetSeveralRandomValue()
{
$array = Arrays::random($this->arrayNumbers, 2);
foreach ($array as $a) {
$this->assertContains($a, $this->arrayNumbers);
}
}
/**
* @param $host
* @param int $maxRecursion
* @return Observable\AnonymousObservable with ip address
*/
public function resolve($host, $maxRecursion = 50)
{
// Don't resolve IP
if (filter_var($host, FILTER_VALIDATE_IP)) {
return Observable::just($host);
}
// Caching
if (array_key_exists($host, $this->cache)) {
return Observable::just($this->cache[$host]);
}
return $this->lookup($host, 'A')->flatMap(function (Event $event) use($host, $maxRecursion) {
$ip = Arrays::random($event->data["answers"]);
if (!$ip) {
throw new RemoteNotFoundException("Can't resolve {$host}");
}
if (!filter_var($ip, FILTER_VALIDATE_IP)) {
if ($maxRecursion <= 0) {
throw new RecursionLimitException();
}
return $this->resolve($ip, $maxRecursion - 1);
}
$this->cache[$host] = $ip;
return Observable::just($ip);
});
}
