Log messages not showing up in App Insights

[johnknoop]

Hi

Sorry for the unspecificity of this question, but I've run out of ideas to try.

I've configured this sink using the latest knowledge I could piece together from the readme and various issues in this repo. My application is an AspNetCore 3.0 web app and the host is configured like this:

return Host.CreateDefaultBuilder(args)
	.ConfigureWebHostDefaults(webBuilder =>
	{
		webBuilder.UseStartup<Startup>()
			.UseShutdownTimeout(TimeSpan.FromSeconds(10))
			.UseUrls($"http://*:{Environment.GetEnvironmentVariable("PORT")}");
	})
	.UseContentRoot(Directory.GetCurrentDirectory())
	.UseSerilog((hostingContext, services, loggerConfig) =>
	{
		loggerConfig
			.Enrich.FromLogContext()
			.MinimumLevel.Debug()
			.MinimumLevel.Override("Microsoft.ServiceProfiler", LogEventLevel.Warning)
			.MinimumLevel.Override("Microsoft.Extensions", LogEventLevel.Warning)
			.MinimumLevel.Override("Microsoft.AspNetCore", LogEventLevel.Warning)
			.MinimumLevel.Override("System", LogEventLevel.Warning)
			.WriteTo.Console(
				outputTemplate:
				"{Timestamp:yyyy-MM-dd HH:mm:ss} {Level:u3} [{TenantKey}] {Message:lj} [Instance: {WEBSITE_INSTANCE_ID}]{NewLine}{Properties:j}{NewLine}{Exception}",
				theme: SystemConsoleTheme.Colored
			);

		if (hostingContext.HostingEnvironment.IsProduction() || hostingContext.HostingEnvironment.IsStaging())
		{
			loggerConfig = loggerConfig
				.MinimumLevel.Information()
				.WriteTo.ApplicationInsights(services.GetRequiredService<TelemetryConfiguration>(), TelemetryConverter.Traces)
				.WriteTo.Logentries(
					token: hostingContext.Configuration["Logging:LogentriesToken"],
					textFormatter: new RenderedCompactJsonFormatter()
				);
		}
	});

And my ConfigureServices method contains this:

services.AddApplicationInsightsTelemetry("<redacted>"); 

I can't figure out why I'm not seeing any traces in App Insights. As you can see, I'm also sending log messages to Logentries, and they turn up as they should.

Anyone who can spot something wrong in my configuration?

Big thanks

[i3anaan]

In my experience it seemed that Serilog needs time to flush before the azure function stops, maybe try adding a delay?

[johnknoop]

@i3anaan it's not an Azure Function so there is plenty of time to flush.

[i3anaan]

@johnknoop Even if it is not an azure function, I'd say it is worth to try to add a delay to see if flushing is part of the problem

[johnknoop]

This is a long lived process. There's no reason why flushing would be a problem here. Besides, it writes successfully to the other sinks.

[i3anaan]

Hmm, I just noticed your WriteTo.ApplicationInsights differs from ours, maybe give this a try?

#pragma warning disable CS0618 // Type or member is obsolete, serilog documentation still recommends this
                    .WriteTo.ApplicationInsights(TelemetryConfiguration.Active, TelemetryConverter.Traces);
#pragma warning restore CS0618 // Type or member is obsolete

[jeroenheijmans]

FWIW, I had the WriteTo from previous comment, but it didn't start working until I changed it to:

.WriteTo.ApplicationInsights(TelemetryConfiguration.CreateDefault(), TelemetryConverter.Events)

(And am curently trying to move this config to my App Service's Configuration, so far without success.)

[nblumhardt]

Hi! 👋 Thanks for getting in touch, and sorry we were unable to respond to your request. We're in the process of bringing new maintainers onto this project, and need to close stale tickets so that we can identify which items are still important to users of the sink.

If this issue still affects you:

• Please consider whether it's a question that can be asked on Stack Overflow; if so, the serilog tag will get your question in front of many more people who can help you
• Please consider whether you can research or investigate the issue and propose a solution for other users to benefit from
• Feel free to comment here, letting us know it's still a problem

Thanks again!