How to trigger an alert when a message in Azure ServiceBus moves to DeadLetterQueue?

Hari Prathipati 0

Hi there, I need to trigger an alert when a message in a topic is moved to the dead letter queue in Azure ServiceBus. I tried running this query on Azure Diagnostics table but it didn't return any results with the Category value as 'Deadletter' even though there are messages in the dead letter queue: AzureDiagnostics | where ResourceType == "SERVICEBUS" | where Category == "Deadletter" | where Message contains "moved to DeadLetter" Note: We are not looking for Count of dead-lettered messages in a Queue/Topic Could you please help me out with this? Thank you in advance. Regards, Hari

JananiRamesh-MSFT 26,546 Reputation points

2024-02-26T06:35:07.2066667+00:00

@Hari Prathipati
I hope the answer helps. Please let me know if you have any further queries. Please 'Accept as answer' and ‘Upvote’ if it helped so that it can help others in the community looking for help on similar topics.
Hari Prathipati 0 Reputation points

2024-03-04T14:22:56.03+00:00

Hi @JananiRamesh-MSFT

Thanks for the response, please find the below query.

The Requirement is when a message is dead-lettered in service bus topic/queue, we need to trigger an alert.

As per below suggestion to use Azure Function App/ Logic App to identify the dead-lettered message in queue/topic.

For Example: ( Set a frequency of every 1 hour to trigger the function)

first time, the timer got trigger and identifies 1 message got dead-lettered. After that there is 1 more message got dead-lettered in the next trigger(2 hour), is the function identifies recent dead-letter message based on time interval? or it will give both 2 dead-lettered messages details irrespective to time interval because they are still in dead-letter queue?

And also please explain/provide the capabilities of these Azure Function App.

please let me know if you need more details.

Regards, Hari
Usman Rashid 0 Reputation points

2024-08-22T15:13:07.22+00:00

We can make the alert on count and set the threshold let suppose 0 and frequency to check is 5 minutes. 1 message moved to dead letter and alert fired after 5 minutes it will again fire the same alert. How to stop the second alert until or unless the count is not greater then last time.

1 answer

JananiRamesh-MSFT 26,546 Reputation points

2024-02-19T10:07:16.44+00:00

@Hari Prathipati Thanks for reaching out. Currently it is not possible to create an alert when a message is dead-lettered in azure service Bus. you can create one that fires when you have messages in your Dead letter queue. You should then remove the message from the DLQ which will resolve the alert.

Select Alerts and Alert rules in the Azure portal, click Count of dead-lettered messages in a Queue/Topic and create alert.

Alternatively, you can create an Azure Function with a Service Bus trigger or a Logic App that is triggered when a message is dead-lettered and then configure the function or logic app to send an email or perform any other custom action that you want.

do let me know incase of further queries, I would be happy to assist you.

Please 'Accept as answer' and ‘Upvote’ if it helped so that it can help others in the community looking for help on similar topics.
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Hari Prathipati 0 Reputation points

2024-02-20T14:06:09.66+00:00

Hi @JananiRamesh-MSFT ,

Can you please provide more detailed steps, how an Azure Function with a Service Bus trigger or a Logic App that is triggered when a message is dead-lettered?

Is Azure Function or Service Bus triggers when a message is dead-lettered?

Is this alert at Service bus namespace level or at Individual Queue/Topic level?

Can we use one Azure Function to identify all Queues, if message is dead-lettered or do we need to create separate function for each Queue?

Thanks in advance for quick help. Regards, Hari

JananiRamesh-MSFT 26,546 Reputation points

2024-02-20T17:07:38.7666667+00:00

Hari Prathipati Thanks for getting back,

Is Azure Function with Service Bus trigger triggers when a message is dead-lettered? Yes

Is this alert at Service bus namespace level or at Individual Queue/Topic level? It's on individual queue level.

Please refer https://www.inkeysolutions.com/blogs/handling-dead-letter-queuedlq-using-azure-functions/

https://www.inkeysolutions.com/blogs/handling-dead-letter-queuedlq-using-logic-app/

JananiRamesh-MSFT 26,546 Reputation points

2024-02-21T10:58:36.97+00:00

Hari Prathipati Just a follow up to my previous comment and see if you have any other questions. Feel free to add a comment and if the answer helped with your question, please accept as answer. That would really help others in the community with similar interests. Thanks again for posting it in Q&A.

Hari Prathipati 0 Reputation points

2024-03-05T07:35:24+00:00

Hi @JananiRamesh-MSFT

Thanks for the response, please find the below query.

The Requirement is when a message is dead-lettered in service bus topic/queue, we need to trigger an alert.

As per below suggestion to use Azure Function App/ Logic App to identify the dead-lettered message in queue/topic.

For Example: ( Set a frequency of every 1 hour to trigger the function)

first time, the timer got trigger and identifies 1 message got dead-lettered. After that there is 1 more message got dead-lettered in the next trigger(2 hour), is the function identifies recent dead-letter message based on time interval? or it will give both 2 dead-lettered messages details irrespective to time interval because they are still in dead-letter queue?

And also please explain/provide the capabilities of these Azure Function App.

please let me know if you need more details.

Regards, Hari

Hari Prathipati 0 Reputation points

2024-03-05T07:36:21.9433333+00:00

Hi @JananiRamesh-MSFT

Thanks for the response, please find the below query.

The Requirement is when a message is dead-lettered in service bus topic/queue, we need to trigger an alert.

As per below suggestion to use Azure Function App/ Logic App to identify the dead-lettered message in queue/topic.

For Example: ( Set a frequency of every 1 hour to trigger the function)

first time, the timer got trigger and identifies 1 message got dead-lettered. After that there is 1 more message got dead-lettered in the next trigger(2 hour), is the function identifies recent dead-letter message based on time interval? or it will give both 2 dead-lettered messages details irrespective to time interval because they are still in dead-letter queue?

And also please explain/provide the capabilities of these Azure Function App.

please let me know if you need more details.

Regards, Hari

JananiRamesh-MSFT 26,546 Reputation points

2024-03-05T08:56:43.7833333+00:00

Hari Prathipati Thanks for getting back, when you use an Azure Function App or Logic App to identify dead-lettered messages in a Service Bus topic/queue, the function will identify all the dead-lettered messages that are currently in the dead-letter queue, regardless of when they were dead-lettered.

In your example, if the function is triggered every hour, it will identify all the dead-lettered messages that are currently in the dead-letter queue at that time, regardless of when they were dead-lettered. So, if there were two dead-lettered messages in the queue at the time of the second trigger (2 hours after the first trigger), the function would identify both of them.

Hari Prathipati 0 Reputation points

2024-03-05T11:51:15.3966667+00:00

Hi @JananiRamesh-MSFT

thanks for the quick response.

In this (it will identify all the dead-lettered messages that are currently in the dead-letter queue at that time, regardless of when they were dead-lettered) case is there any alternative solution to identifies and trigger an alert when a message was dead-lettered.

As I'm looking for a work around solution to trigger an alert when ever any message was dead-lettered.(if there are 5 messages was dead-lettered, but in a given time range, only 2 messages was dead-lettered it needs to identify those dead-lettered messages only).

Regards, Hari

Hari Prathipati 0 Reputation points

2024-03-07T07:36:20.92+00:00

Hi @JananiRamesh-MSFT

Since the Function APP, will identify all the dead-lettered messages that are currently in the dead-letter queue at that time, regardless of when they were dead-lettered, is there any alternative solution to identifies and trigger an alert when a message was dead-lettered.

As I'm looking for a work around solution to trigger an alert when ever any message was dead-lettered.(if there are 5 messages was dead-lettered, but in a given time range, only 2 messages was dead-lettered then it needs to identify those 2 dead-lettered messages.

Thanks in advance for quick help

Regards, Hari

Hari Prathipati 0 Reputation points

2024-03-08T05:38:38.5133333+00:00

Hi JananiRamesh-MSFT, Just a follow up to my previous query, is there any work around solution to identify and trigger an alert when ever any message was dead-lettered.

Thanks in advance for quick response.

Regards, Hari

JananiRamesh-MSFT 26,546 Reputation points

2024-03-11T08:34:57.3033333+00:00

@Hari Prathipati Apologies for the delay, I don't see any built-in way to trigger an alert whenever any message was dead-lettered.

Please feel free to submit a feature request through the Azure feedback forum https://feedback.azure.com/d365community/forum/7c0a897d-2125-ec11-b6e6-000d3a4f0f84
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How to trigger an alert when a message in Azure ServiceBus moves to DeadLetterQueue?

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