add errCode to MessageNotFound

Author: ikilobyte

examples/consumer-not-loop.php

@@ -50,9 +50,14 @@
         // The message will be re-delivered after the specified time
         // $consumer->nack($message);
 
-    } catch (MessageNotFound$e) {
-        echo "Message Not Found\n";
-        continue;
+    } catch (MessageNotFound $e) {
+        // enum code see Exception/MessageNotFound.php
+        $code = $e->getCode();
+        if ($code == MessageNotFound::Ignore) {
+            continue;
+        }
+        
+        throw $e;
     } catch (Throwable $e) {
         echo $e->getMessage();
         throw $e;

src/Consumer.php

@@ -204,7 +204,7 @@ public function receive(bool $loop = true): Message
         // It may appear that the current message is not CommandMessage
         if (!( $commandMessage instanceof CommandMessage )) {
             if (!$loop) {
-                throw new MessageNotFound();
+                throw new MessageNotFound('command parse fail', MessageNotFound::CommandParseFail);
             }
             return $this->receive($loop);
         }

src/Exception/MessageNotFound.php

@@ -18,11 +18,23 @@
 class MessageNotFound extends Exception
 {
 
+    /**
+     * Can be ignored, not a err
+     */
+    const Ignore = 0;
+
+    /**
+     * Command parsing failed
+     */
+    const CommandParseFail = 1;
+
+    
     /**
      * @param string $message
+     * @param int $code
      */
-    public function __construct(string $message = 'Message Not Found')
+    public function __construct(string $message = 'Message Not Found', int $code = MessageNotFound::Ignore)
     {
-        parent::__construct($message);
+        parent::__construct($message, $code);
     }
 }