Debugging Azure static web sites with Python Azure functions for api

Question

Debugging Azure static web sites with Python Azure functions for api

kanna 106

I'm trying to debug Azure Static web site with api written in Python Azure function. How can I look at logging.info logging.warn messages?

I'm unsuccessful in setting up local dev environment, I would like to look at debug/info messages from Python functions. As it using AD for auth I don't think it is easy to set up local environment.

I would like to view the log messages from azure functions from the static website deployment.
Is it possible to capture and view them in portal?

MughundhanRaveendran-MSFT 12,506 Reputation points

2022-02-01T16:29:27.77+00:00

@kanna , I would like to get some calrity on this question and the flow. Please let me know which scenario is correct
Scenario 1 : Static web app -> calls backend python function app which is hosted seperately. You would like to know how to add logs in the python function app
Scenario 2 : Static web app -> calls function app that is present in the same static web app and you would like to log the information in the static web app
kanna 106 Reputation points

2022-02-02T06:05:40.583+00:00

Scenario 2

I had to go through lot of trouble debugging the function by creating small test projects locally etc.

So it will be really useful if I can get the logging.<> messages in portal etc.

1 answer

Your answer

MughundhanRaveendran-MSFT 12,506 Reputation points

2022-02-01T16:29:27.77+00:00

@kanna , I would like to get some calrity on this question and the flow. Please let me know which scenario is correct
Scenario 1 : Static web app -> calls backend python function app which is hosted seperately. You would like to know how to add logs in the python function app
Scenario 2 : Static web app -> calls function app that is present in the same static web app and you would like to log the information in the static web app
kanna 106 Reputation points

2022-02-02T06:05:40.583+00:00

Scenario 2

I had to go through lot of trouble debugging the function by creating small test projects locally etc.

So it will be really useful if I can get the logging.<> messages in portal etc.

Answer 1

MughundhanRaveendran-MSFT 12,506

@kanna , If you are using the logging.info as mentioned here, you should see the logs in the streaming console. Otherwise you should see the logs in the monitor section under the specific function. You can select one of the invocations and it will show the logs.

Modify your host.json file like below and test again

{
"logging": {
"fileLoggingMode": "always",
"logLevel": {
"default": "Information",
"Host.Results": "Error",
"Function": "Error",
"Host.Aggregator": "Trace"
}
}
}

reference : https://learn.microsoft.com/en-us/azure/azure-functions/configure-monitoring?tabs=v2#configure-log-levels

I hope this helps!

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

kanna 106

I have this in in my host.json

{
  "version": "2.0",
  "logging": {
    "fileLoggingMode": "always",
    "logLevel": {
      "default": "Information",
      "Host.Results": "Error",
      "Function": "Information",
      "Host.Aggregator": "Trace"
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[2.*, 3.0.0)"
  }
}

So this should capture the logs but I'm unable to figure out where to look for them on Portal.

I don't see monitor section under static web app and what do you mean by streaming console? is it on portal?

MughundhanRaveendran-MSFT 12,506 Reputation points

2022-02-02T16:33:40.69+00:00

This is the console logs, try to toggle between file system and Application insights

Otherwise you should be able to see the invocation logs in the monitor section
kanna 106 Reputation points

2022-02-02T16:43:02.317+00:00

If a function is deployed outside web app I can get monitor and view logs but not when it is part of a static webapp, is that right?

So only way to debug in this case is to do some kind of hack to send back logs as a response to api calls?

In the sidebar there is no monitor option.
MughundhanRaveendran-MSFT 12,506 Reputation points

2022-02-14T06:23:14.873+00:00

Please click on the GetRoles functions and you should see the monitor section inisde it
kanna 106 Reputation points

2022-02-14T07:58:21.437+00:00

It is not clickable.
Monitor only shows up when function is not part of static webapp.
MughundhanRaveendran-MSFT 12,506 Reputation points

2022-02-22T09:26:04.107+00:00

@kanna , It depends on how you have added the functions to the static web app. If its a managed function , Turn on logging by enabling Application Insights on your static web app. If its bring your own function , Turn on logging by enabling Application Insights on your Azure Functions app.

https://learn.microsoft.com/en-in/azure/static-web-apps/apis#troubleshooting-and-logs

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Debugging Azure static web sites with Python Azure functions for api

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