ILoggingBuilder - clear some providers?

David Thielen 2,796

When my code starts, as suggested, I have the following:

		if (builder.Environment.IsDevelopment())
		{
			builder.Logging.ClearProviders();
			builder.Logging.AddJsonConsole();
			builder.Logging.AddDebug();
		}

Now for production on an Azure app service, please correct me if I'm wrong, as I change nothing it'll set up the following providers (assuming I don't make any calls) - is this correct?

Console
Debug
EventSource
EventLog (Windows only) And that feeds them across with all the {name} key:values and scopes passed to be displayed as desired - correct?

And that feeds them across with all the {name} key:values and scopes passed to be displayed as desired - correct?

Question: Where does the Console & Debug providers go in production?

Question: When I turn on log to the stream in Azure and set it to verbose/debug, it ignores the configuration I set in the appsettings.json and is giving me debug level log output for namespaces I set to warning. Shouldn't appsettings.json stop those log statements from ever getting to Azure?

Question: Is the following the correct way to add in Application Insights?

		if (useApplicationInsights)
		{
			builder.Logging.AddApplicationInsights();
			builder.Services.AddApplicationInsightsTelemetry();
		}

thanks - dave

1 answer

Tiny Wang-MSFT 2,321 Reputation points Microsoft Vendor

2023-07-26T02:54:36.7833333+00:00
Hi @David Thielen , I could answer part of your questions.

Question: Where does the Console & Debug providers go in production?

I think this section explained the location. You could find the logs in Kudu site（https://<app-name>.scm.azurewebsites.net）

Question: Is the following the correct way to add in Application Insights?

I think this official document could help you.

var builder = WebApplication.CreateBuilder(args); // The following line enables Application Insights telemetry collection. builder.Services.AddApplicationInsightsTelemetry();
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David Thielen 2,796 Reputation points

2023-07-26T03:14:59.7033333+00:00

I think the AddMvc() is for other stuff - and only for a MVC app. As it says in that link:

// This code adds other services for your application. builder.Services.AddMvc();

And I think the Console only goes to the zip file if you set that in Azure. And then, only for 12 hours? And they're gone if the app service is moved to a different machine.

Is that correct?

thanks - dave

Tiny Wang-MSFT 2,321 Reputation points Microsoft Vendor

2023-07-26T05:29:36.2466667+00:00

Sorry， because of the format, the line builder.Services.AddApplicationInsightsTelemetry(); is hidden in the behind. I already changed the format. And we need to set appInsight connection string in appsettings.json

David Thielen 2,796 Reputation points

2023-07-26T15:31:17.47+00:00

@Tiny Wang-MSFT The editor on this page keeps screwing up what I post too. So no worries.

You did not include the following - is it needed?

builder.Logging.AddApplicationInsights();

thanks - dave

David Thielen 2,796 Reputation points

2023-07-26T15:33:03.64+00:00

@Tiny Wang-MSFT Also FYI I'm not selecting your answer because I'm hoping someone answers my first 3 questions above in full.

thanks - dave

Tiny Wang-MSFT 2,321 Reputation points Microsoft Vendor

2023-07-27T02:35:18.03+00:00

Hi @David Thielen Thanks for your reply. About builder.Logging.AddApplicationInsights(); what I can say is this is not mentioned in the official document I shared above so I think it's not required. Maybe you can share the document where you found this line of code. And about ClearProviders() method, I never used this and I can only searched for document and get some explanation which I trust you already read, and I think if you prepare to use Azure Application insights, you might also have a look at this document. Then going to Azure portal -> your application insights instance -> Transaction Search blade to see what you have. This is all what I know...

David Thielen 2,796 Reputation points

2023-07-27T02:47:33.4666667+00:00

@Tiny Wang-MSFT you can find info on AddApplicationInsights() at:

https://learn.microsoft.com/en-us/azure/azure-monitor/app/ilogger?tabs=dotnet6

If you all don't know the answer for sure on any of these questions, I prefer you not answer. Because the worst is to get an authoritative answer that is wrong. With no answer, I know to keep looking.

I appreciate you trying. And discussion of possibilities is often helpful in finding the solution. But it's also important to not provide the answer when it's actually a guess.

Again, I do appreciate the help.

thanks - dave

David Thielen 2,796 Reputation points

2023-07-27T03:00:23.44+00:00

I've asked in Stack Overflow. Hopefully someone there knows.

thanks - dave

Tiny Wang-MSFT 2,321 Reputation points Microsoft Vendor

2023-07-27T03:08:02.22+00:00

Hi @David Thielen , thank you again for your reply, you had several questions in one ticket, and I just answer the part that I know. builder.Services.AddApplicationInsightsTelemetry(); helps enable the app insights, builder.Logging.AddApplicationInsights also enable the app insights but it provides configure options (including setting connection string) inside the method. It depends on your requirement to choose which method.

David Thielen 2,796 Reputation points

2023-07-27T03:30:12.3933333+00:00

@Tiny Wang-MSFT What concerns me is nowhere does it speak to using AddApplicationInsightsTelemetry() vs AddApplicationInsights(). And no where is it clear if both are needed. Or if either one, what is the reason to select one over the other.

I dislike using something that is not clearly documented. Because it works great at first and then blows up at the worst time.

If there's no answer here or on StackOverflow in the next day or two, I'll submit a help ticket to Microsoft. That eventually gets to someone who does know all of this.

thanks - dave

Tiny Wang-MSFT 2,321 Reputation points Microsoft Vendor

2023-07-27T05:12:06.09+00:00

@David Thielen Hi，it will be good to have a specific support Ticket to Azure application insights team.
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ILoggingBuilder - clear some providers?

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