static async Task Main(string[] args)
{
var hostBuilder = new HostBuilder()
.ConfigureHostConfiguration(builder =>
{
//may consider using a host.json file with config seperate for appsettings.json
builder.AddEnvironmentVariables().AddCommandLine(args);
})
.ConfigureAppConfiguration((context, appbuilder) =>
{
appbuilder.AddJsonFile("appsettings.json");
})
.ConfigureLogging((context, logBuilder) =>
{
Log.Logger = new LoggerConfiguration()
.Enrich.WithRebusCorrelationId("RebusCorrelationId")
.WriteTo.LiterateConsole()
.CreateLogger();
logBuilder.AddSerilog();
})
.ConfigureServices((context, collection) =>
{
collection.AddCoreRebusfWebJobHandlerServiceDependencies(context.Configuration);
//increase the shutdown time-out. Otherwise defaults to 5 seconds and throws error
collection.Configure <HostOptions>(options => options.ShutdownTimeout = TimeSpan.FromSeconds(30));
//this starts/stops the bus
collection.AddHostedService <HandlerService>();
})
.UseConsoleLifetime();
using (var host = hostBuilder.Build())
using (var watcher = new WebJobsShutdownWatcher())
{
var logger = host.Services.GetService <ILogger <Program> >();
try
{
await host.StartAsync().ConfigureAwait(false);
await host.WaitForShutdownAsync(watcher.Token).ConfigureAwait(false);
}
catch (OperationCanceledException e)
{
logger.LogError(e, "An operation cancelled exception has occurred. This may be due to the host/StopAsync not having enough time to finish.");
}
catch (Exception e)
{
logger.LogCritical(e, "An unexpected exception occurred while executing the hosts. Please verify that the host is running.");
}
finally
{
Log.CloseAndFlush();
}
}
}
internal static WebJobsShutdownWatcher Create(CancellationTokenSource cancellationTokenSource)
{
WebJobsShutdownWatcher watcher = new WebJobsShutdownWatcher(cancellationTokenSource, ownsCancellationTokenSource: false);
if (watcher._watcher == null)
{
watcher.Dispose();
return(null);
}
return(watcher);
}
