Logging not working when using Azure SDK from a library project in .NET Core (Dependency Injection)

[elfico]

Hello team,

I am not quite sure if this is the right place to report this.

I am working on a .NET console app that uses Dependency Injection. The app also uses a Common library that contains abstractions that are shared with all apps in the project.

The Common library uses AzureBlob storage and Azure Service Bus. It contains a static method that, when called, injects these libraries.

Here is the code for the static method:

 public static void AddCommonServices(this IServiceCollection services, IConfiguration Configuration)
 {
     services.AddAzureClients(builder =>
     {
         builder.AddBlobServiceClient(Configuration.GetSection(StorageAccountConfig.ConfigName)["ConnectionString"]);
         builder.AddServiceBusClient(Configuration.GetSection(ServiceBusConfig.ConfigName)["ConnectionString"])
        .ConfigureOptions(opt =>
        {
            opt.TransportType = ServiceBusTransportType.AmqpWebSockets; 
        });
     });

     services.AddLogging();
     services.AddHttpClient();
 }

This static method is then called in the Program.cs of the main app:

private static ServiceProvider BuildDI(IConfiguration configuration)
{
    //create a serviceProvider
    IServiceCollection services = new ServiceCollection();

    services.AddCommonServices(configuration); // static method in CommonServices called here
  
    //add the main program to run
    services.AddSingleton<IRunner, Runner>();

    //add logging

    services.AddLogging(loggingBuilder =>
    {
        loggingBuilder.ClearProviders();
        loggingBuilder.SetMinimumLevel(LogLevel.Trace);
        loggingBuilder.AddNLog(configuration);
    });

    return services.BuildServiceProvider();
}

When I run the main project and use the Log:

private readonly ILogger<Runner> _logger;

public Runner(ILogger<Runner> logger)
{
    _logger = logger;
}

public void DoTask()
{
     _logger.LogInformation("Hello world");
}

The log is not written to the file.

Interestingly, the log folder shows the internal.log files but doesn't show the nlog-all-xxxx-xx-xx.log file.

If I comment out the part of the static file that adds the Azure SDK:

    //services.AddAzureClients(builder =>
    //{
    //    builder.AddBlobServiceClient(Configuration.GetSection(StorageAccountConfig.ConfigName)["ConnectionString"]);
    //    builder.AddServiceBusClient(Configuration.GetSection(ServiceBusConfig.ConfigName)["ConnectionString"])
    //   .ConfigureOptions(opt =>
    //   {
    //       opt.TransportType = ServiceBusTransportType.AmqpWebSockets; //set the transport type to AmqpWebSockets so that the ServiceBusClient uses the port 443
    //   });
    //});

Then the logging works fine.

When I inspect the _logger when running, this is what I see:

NLog version: 5.3.2

NLog Extension Version: 5.3.10

Platform: .NET8

Current NLog config (xml or C#, if relevant)

<nlog>
  <targets>
  </targets>
  <rules>
  </rules>
</nlog>

• What is the current result?
  Only internal.log is written.

• What is the expected result?
  Both log files should be written.

• Did you checked the Internal log?
  Yes

• Please post full exception details (message, stacktrace, inner exceptions)
  N/A

• Are there any workarounds? Yes

• Is there a version in which it did work?
  N/A

• Can you help us by writing an unit test?
  Not sure what to test.

[welcome]

Hi! Thanks for opening your first issue here! Please make sure to follow the issue template - so we could help you better!

[snakefoot]

Sounds like a question for StackOverflow.com, but always a good idea to check the output from NLog InternalLogger when troubleshooting logging with NLog.

Maybe paste the output from NLog InternalLogger at internalLogLevel="Debug" (Remember to remove any senstive information)

[snakefoot]

Closing due to inactivity.