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Macross Software Demo Application

A simple demo application using Macross.Logging.Files and Macross.Windows.Debugging.

Notes, Tips, and Tricks

  • Feature registration is done via ConfigureLogging and ConfigureDebugWindow called in Program.cs:

     	public static IHostBuilder CreateHostBuilder(string[] args)
 	{
 		return Host
 			.CreateDefaultBuilder(args)
 			#if WINDOWS && DEBUG
 			.ConfigureDebugWindow()
 			#endif
 			.ConfigureWebHostDefaults(webBuilder => webBuilder.UseStartup<Startup>())
 			.ConfigureLogging((builder) => builder.AddFiles(options => options.IncludeGroupNameInFileName = true));
 	}

    Logging into files by group is turned on.

  • The WINDOWS constant is set in csproj:

       <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
 	<TargetFramework>net5.0-windows</TargetFramework>
 	<DefineConstants>WINDOWS</DefineConstants>
   </PropertyGroup>

   <PropertyGroup Condition="'$(OS)' != 'Windows_NT'">
 	<TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>

  • appsettings.Development.json has some configuration targeted for development:

     {
 	"Logging": {
 		"LogLevel": {
 			"DemoWebApplication": "Debug",
 			"DemoWebApplication.MessageSpamBackgroundService": "Warning"
 		}
 	}
 }

    The MessageSpamBackgroundService writes a lot of spam (by design), the "Warning" rule demonstrates how to filter that out when debugging.

  • Properties\launchSettings.json has been customized so IIS Express debugging is not the default launch setting. Launching via the compiled executable will give the best experience when combined with the DebugWindow.

  • A custom (somewhat experimental) middleware has been provided (Middleware\RequestTraceMiddleware.cs) which will group log messages by routes and then trace them out to logs as the Http pipeline is executed. It will also log raw request and response bodies when debugging. I have it configured to only log bodies for JSON & XML responses, but you can tweak that in your own applications. Here's an example of the output:

     {
   "TimestampUtc": "2020-02-02T18:26:12.0192317Z",
   "ThreadId": 15,
   "LogLevel": "Information",
   "GroupName": "WeatherForecast",
   "CategoryName": "DemoWebApplication.RequestTraceMiddleware",
   "Content": "REQ",
   "RequestId": "0HLT81LCG66U6:00000003",
   "RequestPath": "/api/WeatherForecast",
   "SpanId": "8911b2e83f658a4e",
   "TraceId": "c5dc1ceb867e44449789e8669d6f7eae",
   "ParentId": "0000000000000000",
   "RemoteEndpoint": "::1:64468",
   "Protocol": "HTTP/2",
   "Method": "GET",
   "Scheme": "https",
   "Path": "/api/WeatherForecast",
   "QueryString": "?postalCode=90210",
   "Headers": {
 	"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
 	"Accept-Encoding": "gzip, deflate, br",
 	"Accept-Language": "en-US,en;q=0.9",
 	"Host": "localhost:5001",
 	"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36 Edg/79.0.309.71",
 	"Upgrade-Insecure-Requests": "1",
 	":method": "GET",
 	":authority": "localhost:5001",
 	":scheme": "https",
 	":path": "/api/WeatherForecast?postalCode=90210",
 	"sec-fetch-user": "?1",
 	"sec-fetch-site": "none",
 	"sec-fetch-mode": "navigate"
   },
   "Cookies": {},
   "Body": ""
 }
 {
   "TimestampUtc": "2020-02-02T18:26:12.0592014Z",
   "ThreadId": 15,
   "LogLevel": "Information",
   "GroupName": "WeatherForecast",
   "CategoryName": "DemoWebApplication.RequestTraceMiddleware",
   "Content": "RSP",
   "RequestId": "0HLT81LCG66U6:00000003",
   "RequestPath": "/api/WeatherForecast",
   "SpanId": "8911b2e83f658a4e",
   "TraceId": "c5dc1ceb867e44449789e8669d6f7eae",
   "ParentId": "0000000000000000",
   "StatusCode": 200,
   "Headers": {
 	"Content-Type": "application/json; charset=utf-8"
   },
   "Cookies": {},
   "Body": "{\"postalCode\":90210,\"friendlyName\":\"Blanchtown\",\"highTemperatureInFahrenheitDegrees\":70,\"lowTemperatureInFahrenheitDegrees\":50,\"forecastGoodUntilTime\":\"2020-02-02T10:26:42.041683-08:00\"}",
   "ElapsedMilliseconds": 38.9791
 }

    The RequestTraceMiddleware is registered in Startup.cs:

     public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
 {
 	app.UseMiddleware<RequestTraceMiddleware>();
 	...
 }

    Note: It has to be the first middleware registered to be useful.