/**
* @param array $keys
* @return array a key-value array without keys that are not in the hash table
*/
public function get($keys)
{
$keys = array_values($keys);
$items = $this->redis->hmget($this->name, $keys);
$keyValues = [];
for ($i = 0; $i < count($keys); $i++) {
if (!is_null($items[$i])) {
$keyValues[$keys[$i]] = $items[$i];
}
}
return ArraySerialization::unserializeArray($keyValues);
}
public function shift($n = 1, $timeout = 0)
{
$lua = <<<LUA
local values = redis.call('lrange', KEYS[1], 0, KEYS[2] - 1)
redis.call('ltrim', KEYS[1], KEYS[2], - 1)
return values
LUA;
$items = $this->redis->eval($lua, 2, $this->name, $n);
if (!count($items) && $timeout) {
$items = $this->redis->blpop([$this->name], $timeout);
if (is_null($items)) {
return [];
}
$items = [$items[1]];
if ($n > 1) {
$remainingItems = $this->redis->eval($lua, 2, $this->name, $n - 1);
$items = array_merge($items, $remainingItems);
}
}
return ArraySerialization::unserializeArray($items);
}
