Azure Function (Spring Cloud): How to stop/reduce verbose Service Bus Logs?

Daniel 1

Hello

Is there a way to reduce the amount of logs that are generated if I use a "@ServiceBusQueueTrigger" inside a Azure function with Spring Cloud?
e.g. I have this configured:
@ServiceBusQueueTrigger(
name = "message",
queueName = "handle-queue",
connection = "serviceBusConnection"
) message: String

And then, even before my Spring Context is loaded, the logs are hammered with such entries:
[2022-11-23T15:44:21.450Z] handle-queue-988b8f3f-da1b-4c0a-aeaa-2fd5c61f1f84-Receiver: ReceiveBatchAsync start. MessageCount = 1

Setting the root logger in logback-spring.xml to ERROR has no effect (as those logs are not happening in the Spring context).
Setting inside local.settings.json "AzureFunctionsJobHost__logging__logLevel__default": "Warning" stops those messages, but also stops all my own info logs, that I would like to have. So that can't be used.
And I haven't found any other way to affect this.

Help would be much appreciated

Kind Regards

1 answer

MayankBargali-MSFT 70,426 Reputation points

2022-11-29T07:53:43.583+00:00
@Daniel Thanks for reaching out. You can configure the log level for the logging that controls the logging behaviors of the function app, including Application Insights.
If you need only error to log, then you can configure the particular function app with Error.

"logging": { "fileLoggingMode": "debugOnly", "logLevel": { "Function.MyFunction": "Error", "default": "None" }, "console": { ... }, "applicationInsights": { ... } }
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Daniel 1 Reputation point

2022-11-29T09:00:56.607+00:00

Thanks @MayankBargali-MSFT for your reply. But this doesn't lead to my desired result (sorry if I wasn't clear enough).
I lose all the SpringBoot logs if "default": "None" is set. And therefore also all application logs that I'm writing inside my function.

Resulting log with proposed settings:

For detailed output, run func with --verbose flag.
[2022-11-29T08:23:56.939Z] Worker process started and initialized.
[2022-11-29T08:24:01.424Z] Host lock lease acquired by instance ID '000000000000000000000000B4991D7C'.
[2022-11-29T08:24:18.007Z] Executing 'Functions.myRequest' (Reason='This function was programmatically called via the host APIs.', Id=ca4b4ee1-2680-43ad-89d0-1ae62c93a31c)
[2022-11-29T08:24:24.920Z] Function "myRequest" (Id: ca4b4ee1-2680-43ad-89d0-1ae62c93a31c) invoked by Java Worker
[2022-11-29T08:24:25.134Z] Executed 'Functions.myRequest' (Succeeded, Id=ca4b4ee1-2680-43ad-89d0-1ae62c93a31c, Duration=7154ms)

Between the function call and its end there would be log entries like:
[2022-11-29T08:26:45.008Z] INFO c.s.h.c.a.handler.MyRequestHandler - BEGIN request for participant_number '1'
But those are not written because of this setting.
It correctly suppresses the log entries for BlobStorage and ServiceBus connection like such:
[2022-11-29T08:26:44.818Z] x-ms-client-request-id:690486c4-dd5d-4e1a-875d-b807dc59606a

But yeah, it's cutting off too much.

Regards

MayankBargali-MSFT 70,426 Reputation points

2022-12-08T04:46:46.147+00:00

@Daniel Thanks for your response. Unfortunately, there is no configuration that will only a specific set of logs. The logging is applicable at the individual function app level, and it cuts off the logs according to the configure log level.

Daniel 1 Reputation point

2022-12-08T09:40:50.813+00:00

@MayankBargali-MSFT oh okay, that is unfortunate (as we have 8k unwanted logs each hour). But thanks for the clarification

MayankBargali-MSFT 70,426 Reputation points

2022-12-09T05:15:13.65+00:00

@Daniel Thanks for your response. Feel free to 'Accept as answer' if it helped so that it can help others in the community looking for help on similar topics.
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Azure Function (Spring Cloud): How to stop/reduce verbose Service Bus Logs?

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