Message System

app/code/Magento/Messaging/Block/Messaging.php

@@ -3,8 +3,29 @@ namespace Magento\Messaging\Block;
  
 class Messaging extends \Magento\Framework\View\Element\Template
 {
-    public function getText()
-    {
+	/**
+	  * @var \Magento\Framework\App\ObjectManager
+	  */
+	public $om;
+
+	/**
+	  * @var \Magento\Customer\Model\Session
+	  */
+	public $session;
+
+    public function getText() {
         return 'Hello world!';
     }
+
+    public function getId() {
+    	if ($om === null || $session === null) {
+    		$om = \Magento\Framework\App\ObjectManager::getInstance();
+    		$session = $om->get('\Magento\Customer\Model\Session');
+    	}
+    	if ($session->isLoggedIn()) {
+    		return $session->getCustomer()->getId();
+    	} else {
+    		return -1;
+    	}
+    }
 }
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