Add missing exit codes (#24)

* Add missing exit codes

* Fix return types in doc blocks

Author: mantiz

Command/DeleteCommand.php

@@ -26,7 +26,7 @@ protected function configure()
      * @param InputInterface $input
      * @param OutputInterface $output
      *
-     * @return void
+     * @return int
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
@@ -51,5 +51,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $this->consumer = $this->getContainer()
             ->get(sprintf($this->getConsumerService(), $input->getArgument('name')));
         $this->consumer->delete();
+
+        return 0;
     }
 }

Command/PurgeConsumerCommand.php

@@ -26,7 +26,7 @@ protected function configure()
      * @param InputInterface $input
      * @param OutputInterface $output
      *
-     * @return void
+     * @return int
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
@@ -51,5 +51,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $this->consumer = $this->getContainer()
             ->get(sprintf($this->getConsumerService(), $input->getArgument('name')));
         $this->consumer->purge($input->getArgument('name'));
+
+        return 0;
     }
 }

RabbitMq/BatchConsumer.php

@@ -126,6 +126,8 @@ public function consume()
                 }
             }
         }
+
+        return 0;
     }
 
     private function batchConsume()