Magento 2

vendor/magento/module-mysql-mq/Model/QueueManagement.php

Queue status:

    const MESSAGE_STATUS_NEW = 2;
    const MESSAGE_STATUS_IN_PROGRESS = 3;
    const MESSAGE_STATUS_COMPLETE= 4;
    const MESSAGE_STATUS_RETRY_REQUIRED = 5;
    const MESSAGE_STATUS_ERROR = 6;
    const MESSAGE_STATUS_TO_BE_DELETED = 7;