Subscribing and reading data from redis channels using php-redis simultaneously - php

Question

I have to subscribe to all the channels of my Redis db and simultaneously read data from another hash in the same db node. The following is the code I have written for this using phpredis:
$notif = new Worker;
try {
// connect redis
$notif->connectRedisServer();
// start the worker processing
$notif->startWorkerProcess();
}
catch(Exception $e) {
exit('Exception: '.$e->getMessage());
}
class Worker {
private $redis;
public $recentHash = 'tracker.data.recent';
public $notifHash = 'tracker.settings.data';
public $serverConnectionDetails = { //Redis server connection details
};
private $redis;
// redis database used for getting recent record of every imei
const RECENTDATA_DB = 1;
public function connectRedisServer() {
if(!empty($this->redis))
return $this->redis; // already connected
$this->redis = new Redis();
if(!$this->redis->pconnect(
$this->serverConnectionDetails['redis']['host'],
$this->serverConnectionDetails['redis']['port']
))
return 'Redis connection failed.';
if(isset($this->serverConnectionDetails['redis']['password'])
&&
!$this->redis->auth($this->serverConnectionDetails['redis']['password'])
)
return 'Redis authentication failed.';
return $this->redis;
}
public function startWorkerProcess() {
$this->redis->select(self::RECENTDATA_DB);
$this->redis->pSubscribe(array('*'), array($this, 'processRedisData'));
}
public function processRedisData($redis, $pattern, $chan, $msg) {
$message = rtrim((string) $msg,",");
$tData = json_decode($message, true);
$tId = (int) $tData['tID'];
echo "Recent Published Data:";
var_dump($tData);
$data = $this->getNotifSettings($tId);
if(!empty($data)) {
echo "Redis Settings: ";
var_dump($trackerSettings);
}
}
public function getNotifSettings($tId) {
$data = $this->redis->hGet($this->notifHash, $tId); //This command doesn't return any data even if it exists for the $tId
if($data === false)
return null;
$data = json_decode($data, true);
return $data; // Always comes up as null
}
}
The problem here is that once I get subscribed to all the channels on db1 in Redis. I don't get any result if I try to run HGET, even though the data for the given key exists in the db. I have put additional comments in the code above to explain where the problem is. Check getNotifSettings() function.
Any help will be appreciated.