[PLUGINS] Added RedisQueue

plugins/RedisQueue/classes/RedisQueueManager.php

@@ -0,0 +1,66 @@
+<?php
+
+use Predis\Client;
+
+class RedisQueueManager extends QueueManager
+{
+    protected $queue;
+    protected $client = null;
+    protected $server;
+
+    public function __construct(string $server)
+    {
+        $this->server = $server;
+        $this->queue = 'gnusocial:' . common_config('site', 'name');
+    }
+
+    private function _ensureConn()
+    {
+        if ($this->client === null) {
+            $this->client = new Client($this->server);
+        }
+    }
+
+    public function pollInterval()
+    {
+        return 10;
+    }
+
+    public function enqueue($object, $queue)
+    {
+        $this->_ensureConn();
+        $ret = $this->client->rpush($this->queue, $this->encode([$queue, $object]));
+        if (empty($ret)) {
+            common_log(LOG_ERR, "Unable to insert object into Redis queue {$queue}");
+        } else {
+            common_debug("The Redis queue for {$queue} has length {$ret}");
+        }
+    }
+
+    public function poll()
+    {
+        common_debug("STARTING POLL");
+        try {
+            $this->_ensureConn();
+            $ret = $this->client->lpop($this->queue);
+            if (!empty($ret)) {
+                list($queue, $object) = $this->decode($ret);
+            } else {
+                return false;
+            }
+        } catch (Exception $e) {
+            $this->_log(LOG_INFO, "[Queue {$queue}] Discarding: " . _ve($e->getMessage()));
+            return false;
+        }
+
+        try {
+            $handler = $this->getHandler($queue);
+            $handler->handle($object);
+            common_debug("Redis Queue handled item from {$queue} queue");
+            return true;
+        } catch (Exception $e) {
+            $this->_log(LOG_ERR, "[Queue: {$queue}] `" . get_class($e) . '` thrown: ' . _ve($e->getMessage()));
+            return false;
+        }
+    }
+};