Add a dedicated table for queues and stop using file-based queues

Author: cdujeu

core/src/plugins/mq.sql/SqlMessageExchanger.php

@@ -22,6 +22,8 @@
 
 use Pydio\Core\Model\ContextInterface;
 
+use Pydio\Core\PluginFramework\SqlTableProvider;
+use Pydio\Core\Utils\DBHelper;
 use Pydio\Core\Utils\FileHelper;
 use Pydio\Core\Utils\Vars\OptionsHelper;
 
@@ -37,7 +39,7 @@
  * @package AjaXplorer_Plugins
  * @subpackage Mq
  */
-class SqlMessageExchanger extends Plugin implements IMessageExchanger
+class SqlMessageExchanger extends Plugin implements IMessageExchanger, SqlTableProvider
 {
 
     /**
@@ -77,9 +79,11 @@ public function loadChannel($channelName, $create = false)
         if (isSet(self::$channels) && is_array(self::$channels[$channelName])) {
             return;
         }
-        if (is_file($this->getPluginWorkDir()."/queues/channel-$channelName")) {
+        $res = dibi::query('SELECT [content] FROM [ajxp_mq_queues] WHERE [channel_name] = %s', $channelName);
+        if($res->count()){
             if(!isset(self::$channels)) self::$channels = array();
-            $data = FileHelper::loadSerialFile($this->getPluginWorkDir() . "/queues/channel-$channelName");
+            $single = $res->fetchSingle();
+            $data = unserialize(base64_decode($single));
             if (is_array($data)) {
                 if(!is_array($data["MESSAGES"])) $data["MESSAGES"] = array();
                 if(!is_array($data["CLIENTS"])) $data["CLIENTS"] = array();
@@ -97,9 +101,36 @@ public function loadChannel($channelName, $create = false)
     public function __destruct()
     {
         if (isSet(self::$channels) && is_array(self::$channels)) {
+            $inserts = [];
+            $deletes = [];
+            $driver = $this->sqlDriver["driver"];
             foreach (self::$channels as $channelName => $data) {
                 if (is_array($data)) {
-                    FileHelper::saveSerialFile($this->getPluginWorkDir() . "/queues/channel-$channelName", $data);
+                    if(isSet($data["CLIENTS"]) && count($data["CLIENTS"])) {
+                        $serialized = base64_encode(serialize($data));
+                        if($driver === "postgre"){
+                            dibi::query("DELETE FROM [ajxp_mq_queues] WHERE [channel_name] = %s", $channelName);
+                            dibi::query('INSERT INTO [ajxp_mq_queues]', ["channel_name" => $channelName, "content" => $serialized]);
+                        }else{
+                            $inserts[] = "('$channelName', '".$serialized."')";
+                        }
+                    }else{
+                        $deletes[] = $channelName;
+                    }
+                }
+            }
+            if(count($inserts)){
+                try{
+                    dibi::query('REPLACE INTO [ajxp_mq_queues] ([channel_name],[content]) VALUES '.implode(",", $inserts));
+                }catch(\DibiException $dE){
+                    $this->logError(__CLASS__, $dE->getMessage());
+                }
+            }
+            if(count($deletes)){
+                try{
+                    dibi::query('DELETE FROM [ajxp_mq_queues] WHERE [channel_name] IN %s', $deletes);
+                }catch(\DibiException $dE){
+                    $this->logError(__CLASS__, $dE->getMessage());
                 }
             }
         }
@@ -337,4 +368,14 @@ public function publishInstantMessage(ContextInterface $ctx, $channel, $message)
         self::$channels[$channel]["MESSAGES"] = $clean;
     }
 
+    /**
+     * @param array $param
+     * @return string
+     * @throws \Exception
+     */
+    public function installSQLTables($param)
+    {
+        $p = OptionsHelper::cleanDibiDriverParameters(isSet($param) && isSet($param["SQL_DRIVER"]) ? $param["SQL_DRIVER"] : $this->sqlDriver);
+        return DBHelper::runCreateTablesQuery($p, $this->getBaseDir() . "/create.sql");
+    }
 }

core/src/plugins/mq.sql/create.sql

@@ -0,0 +1,5 @@
+CREATE TABLE IF NOT EXISTS `ajxp_mq_queues` (
+  `channel_name` varchar(255) NOT NULL,
+  `content` text NOT NULL,
+  PRIMARY KEY (`channel_name`)
+) DEFAULT CHARSET=utf8;