[my mistake] WebApplicationBuilder.Build exits application with error code 1

[pvasek]

It seems that WebApplicationBuilder.Build does a lot of work, unfortunately, there is almost no logging. It's like a huge black box.

We encountered several times the issue that Build method failed but returned no exception.

I have no doubt it's an issue in our code, I just have no idea how to track it down. Any ideas, on how to investigate the WebApplicationBuilder.Build method?

The detailed description of the issue:

Right now we have this issue in our docker image in which it just exits the process with error code 1. No message is logged.

I added the following code, thinking the last error was not logged or something similar.

            Log.Information("Building application...");
            builder.Logging.ClearProviders();
            builder.Logging.AddConsole();
            builder.Logging.SetMinimumLevel(LogLevel.Trace);
            WebApplication app;
            try
            {
                app = builder.Build();
            }
            catch (Exception ex)
            {
                Log.Information("Building application failed");
                Log.Fatal(ex, "Building application failed");
                return 2;
            }
            Log.Information("Building application - Done");

But still, I can see only:

web-1  | [10:09:50 INF] Building application...
web-1 exited with code 1

[martincostello]

Try moving these lines into the try block in case they are where the exception is coming from?

builder.Logging.ClearProviders();
builder.Logging.AddConsole();
builder.Logging.SetMinimumLevel(LogLevel.Trace);

[pvasek]

Sorry, as I expected it was an issue with our code. The problem was that logging somehow stopped working after calling build.Build() when I replaced with just Console.WriteLine I could see that the call finished.

I found it thanks to the article from Andrew Lock about A brief introduction to DiagnosticSource just by comparing traces I have seen during debugging and in the container.