Azure Function v2 在 NodeJS (index.js) 中使用 ServiceBusQueueTrigger - 如果出现异常，如何将消息发送到死信队列

Question

I am using ServiceBusQueueTrigger in NodeJS. When there is error, it is expected to put message to Deadletter Queue instead of Complete it. How can I do that?

Below is my code in index.js:

module.exports = async function(context, message) {
    ...
}

Answer 1

According to my research, if the function fails, it will call Abandon method and tell service bus message processing failed. The service bus will check if the DeliveryCount of this message reaches MaxDeliveryCount. If it reaches, service bus will move it to Deadletter Queue. Otherwhise, service bus will let the function continue to process it. For more details, please refer to https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-service-bus#trigger---poison-messages and https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-dead-letter-queueshttps://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-dead-letter-queues