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<?php
namespace App\Services;
use Predis\Client as RedisClient;
use Config\Queue;
class QueueService
{
protected $redis;
public function __construct()
{
// Initialize Redis connection using Predis
try {
$config = new Queue();
$this->redis = new RedisClient([
'scheme' => 'tcp',
'host' => $config->redisHost,
'port' => $config->redisPort,
'timeout' => $config->redisTimeout
]);
} catch (\Exception $e) {
log_message('error', 'Failed to connect to Redis: ' . $e->getMessage());
throw new \RuntimeException('Could not connect to Redis server.');
}
}
// Push a task onto the queue
public function pushToQueue($queueName, $data)
{
try {
return $this->redis->rpush($queueName, json_encode($data)); // Add task to the end of the list
} catch (\Exception $e) {
log_message('error', 'Failed to push task to Redis queue: ' . $e->getMessage());
return false;
}
}
// Pop a task from the queue
public function popFromQueue($queueName)
{
try {
$data = $this->redis->lpop($queueName); // Get task from the start of the list
return $data ? json_decode($data, true) : null; // Decode the task data
} catch (\Exception $e) {
log_message('error', 'Failed to pop task from Redis queue: ' . $e->getMessage());
return null;
}
}
// Get the current length of the queue
public function getQueueLength($queueName)
{
try {
return $this->redis->llen($queueName); // Get the number of items in the list
} catch (\Exception $e) {
log_message('error', 'Failed to get Redis queue length: ' . $e->getMessage());
return 0;
}
}
}