Using Serilog for Logging with Azure Table Storage in .NET Core MVC

Question

Despite hours spent on google, I am not getting there. We have a Core 3.1 MVC Web App project, and I've been asked to use SeriLog to write logs to Azure Table Storage. For the life of me, I can't find a working example or tutorial online. Here's what I've done so far:

Added the following NuGet's:

Serilog
Serilog.Extensions.Logging
Serilog.Sinks.AzureTableStorage

In appsettings.json,I replaced this:

  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Information",
      "Microsoft.Hosting.Lifetime": "Warning"
    }

With this:

  "Serilog": {
    "WriteTo": [
      {
        "Name": "AzureTableStorage",
        "Args": {
          "storageTableName": "Logs",
          "connectionString": "DefaultEndpointsProtocol=https;AccountName=***;AccountKey=***;EndpointSuffix=core.windows.net"
        }
      }
    ]
  },

And now I am stuck. This is currently in Program.cs in CreateHostBuilder :

.ConfigureLogging(logging =>
{
    logging.AddConsole();
})

I assume I should replace this? But, with what? I am not sure where to go from here. The serilog-sinks-azuretablestorage page on Github isn't much help. And I've been unable to find anything via Google that explains how to finish the implementation.

Casey Crookston · Accepted Answer · 2020-04-01 21:08:51Z

Well, I didn't get any bites on this. But after reading about 5 different articles, I managed to figure it out. In Program.cs, this was there by default:

public static IHostBuilder CreateHostBuilder(string[] args) =>
    Host.CreateDefaultBuilder(args)
        .ConfigureLogging(logging =>
        {
            logging.AddConsole();
        })

And I replaced it with this:

public static IHostBuilder CreateHostBuilder(string[] args) =>
    Host.CreateDefaultBuilder(args)
        .ConfigureLogging((hostingContext, logging) =>
        {
            var logger = new LoggerConfiguration()
                 .ReadFrom.Configuration(hostingContext.Configuration)
                 .CreateLogger();

            logging.AddSerilog(logger);
        })

hostingContext is an instance of HostBuilderContext and it contains '.Configuration' which is an instance of IConfiguration. So hostingContext.Configuration contains all your settings in appsetting.json.

In addition to the NuGet packages I mentioned in the OP, I also had to add this one:

Serilog.Settings.Configuration

(It's amazing how sometimes it can take 7 or 8 hours to write 4 lines of code.)

Thomas Eyde · Accepted Answer · 2024-04-02 08:50:43Z

Add Serilog.Settings.Configuration and Microsoft.Extensions.Logging nuget package to your project it helps to read serilog configuration settings from appsettings.json and ensure you have below Serilog config in your Startup.cs file.

 public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
           //logger config 
            var logger = new LoggerConfiguration()
                                              .ReadFrom.Configuration(configuration)
                                              .CreateLogger();

            logger.Information("Logging configured");
            Log.Logger = logger;
        }

public void ConfigureServices(IServiceCollection services)
        {
            services.AddOptions();
            services.AddLogging(loggingBuilder =>
            {
                loggingBuilder.AddConfiguration(Configuration.GetSection("Logging"));
                loggingBuilder.AddConsole();
                loggingBuilder.AddDebug();
                //Add Serilog config to logbuilder
                loggingBuilder.AddSerilog(Log.Logger);
            });
}

//Add this config in appsettings.json
"Serilog": {
        "Using": [ "Serilog.Sinks.AzureTableStorage" ],
        "WriteTo": [
            {
                "Name": "AzureTableStorage",
                "Args": {
                    "storageTableName": "MyAppLogs
                    "connectionString": ""
                }
            }
        ],
        "Enrich": [ "FromLogContext", "WithMachineName", "WithThreadId" ],
        "Properties": {
            "Application": MyApp
        }
    },

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