/**
* Insert items into queue
* @param PriorityItem[] $items
* @return mixed
*/
public function enqueue(array $items)
{
//$t0 = the time that the next item currently in the queue will get expired (inf if nothing)
//$best = the id corresponding to $t0 (0 if nothing)
//$n = the number of items in $items array that are going to get expired sooner than $t0
$first = $this->redis->zrange($this->name, 0, 0, 'WITHSCORES');
if (count($first)) {
$t0 = array_values($first)[0];
$best = array_keys($first)[0];
$n = 0;
foreach ($items as $item) {
if ($item->score < $t0) {
$n++;
}
}
} else {
$t0 = INF;
$best = 0;
$n = count($items);
}
//zadd $items in the sorted set
$this->queue->enqueue($items);
//lpush $n flags into list "{$this->name}:$best" and make sure this list will expire soon
if ($n) {
$this->redis->lpush($this->name . ':' . $best, array_fill(0, $n, ''));
$exp = $t0 != INF ? ceil($t0) : time() + 1;
$this->redis->expireat($this->name . ':' . $best, $exp);
}
}
public function test_pop_multiple_elements_at_once()
{
$now = microtime(true);
$input = [new PriorityItem('first', $now - 9), new PriorityItem('second', $now - 8), new PriorityItem('third', $now - 10), new PriorityItem('duplicate', $now), new PriorityItem('duplicate', $now)];
$this->queue->enqueue($input);
$this->assertCount(5, $this->queue->dequeue(50));
}
