@PostCreate

[RichardHightower]

    @QueueCallback(QueueCallbackType.INIT)
    fun connectionInit() {
        checkConnectionBreaker()
    }


    @QueueCallback(QueueCallbackType.SHUTDOWN)
    fun shutdown() {
        try {
            connectionBreaker.ifOk {
                it.close()
            }.cleanup { it.close() }
        } catch (ex : Exception) {
            logger.warn("unable to close connection", ex)
        }
    }

The above should also work like this

    @PostCreate
    fun connectionInit() {
        checkConnectionBreaker()
    }


    @PreDestroy
    fun shutdown() {
        try {
            connectionBreaker.ifOk {
                it.close()
            }.cleanup { it.close() }
        } catch (ex : Exception) {
            logger.warn("unable to close connection", ex)
        }
    }

[RichardHightower]

http:https://docs.oracle.com/javaee/5/api/javax/annotation/PostConstruct.html