private static async Task HostingUsingOnlyInterfaceMethodsAsync(string[] args, CancellationToken ct)
{
var loggerFactory = new LoggerFactory()
.AddConsole(LogLevel.Trace, true);
var logger = loggerFactory.CreateLogger <Program>();
using (logger.BeginScope("Example:{exampleNumber}", "01"))
{
logger.LogInformation("Hosting an application using only interface methods");
using (var hostBuilder = new HostBuilder("ASPNETCORE_ENVIRONMENT"))
{
hostBuilder.SetLoggerFactory(loggerFactory);
hostBuilder.AddConfigurationBuilderHandler(param =>
{
param.Builder
.SetBasePath(param.Environment.ContentRootPath)
.AddJsonFile("appsettings.json", true, true)
.AddJsonFile($"appsettings.{param.Environment.Name}.json", true, true)
.AddEnvironmentVariables()
.AddCommandLine(args);
});
hostBuilder.AddConfigurationHandler(param =>
{
if (param.Environment.IsDevelopment())
{
param.Configuration["CacheTimeoutInMs"] = "1000";
}
});
hostBuilder.AddLoggerFactoryHandler(param =>
{
NLog.LogManager.LoadConfiguration(
param.Environment.ContentRootFileProvider.GetFileInfo(
param.Environment.IsDevelopment()
? "nlog.config"
: $"nlog.{param.Environment.Name}.config")
.PhysicalPath);
param.LoggerFactory.AddNLog();
});
hostBuilder.AddServiceCollectionHandler(param =>
{
param.ServiceCollection
.AddOptions()
.Configure <ExampleHostOptions>(param.Configuration)
.AddSingleton(k => k.GetRequiredService <IOptions <ExampleHostOptions> >().Value);
});
hostBuilder.ServiceProviderBuilder = param =>
{
var container = new Autofac.ContainerBuilder();
container.Populate(param.ServiceCollection);
return(new AutofacServiceProvider(container.Build()));
};
using (var ctx = hostBuilder.BuildRunContext <ExampleHost>())
{
await ctx.Host.RunAsync(ct);
}
}
logger.LogInformation("Terminated");
}
}
