Different Exit code when IHost stops from failing (async)IHostedService #67146
Description
Given the following Program.cs
IHost host = Host.CreateDefaultBuilder(args)
.ConfigureServices(services =>
{
services.AddHostedService<Worker>();
services.Configure<HostOptions>(hostOptions =>
{
hostOptions.BackgroundServiceExceptionBehavior = BackgroundServiceExceptionBehavior.StopHost;
});
})
.Build();
await host.RunAsync();And Worker.cs
public class Worker : BackgroundService
{
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
//await Task.Delay(TimeSpan.FromSeconds(1), stoppingToken);
throw new Exception();
}
}I get an 'error' exit code, which is usefull to detect errors in let's say kubernetes
Process finished with exit code 134.
However when uncommenting the 'await Task...'
There is no longer an 'error' exit code
crit: Microsoft.Extensions.Hosting.Internal.Host[10]
The HostOptions.BackgroundServiceExceptionBehavior is configured to StopHost. A BackgroundService has thrown an unhandled exception, and the IHost instance is stopping. To avoid this behavior, configure this to Ignore; however the BackgroundService will not be restarted.
System.Exception: Exception of type 'System.Exception' was thrown.
at TestUpgrade.Worker.ExecuteAsync(CancellationToken stoppingToken) in Worker.cs:line 8
at Microsoft.Extensions.Hosting.Internal.Host.TryExecuteBackgroundServiceAsync(BackgroundService backgroundService)
info: Microsoft.Hosting.Lifetime[0]
Application is shutting down...
Process finished with exit code 0. <-------
Is there a way to detect this case using the hostbuilder ?