iot/projects/Platform/Program.cs

using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Serilog;
using Serilog.Settings.Configuration;
using System;
using System.IO;
using System.Text;

namespace Platform
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.OutputEncoding = Encoding.UTF8;

            var config = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: true)
                .Build();

            var logConfig = new LoggerConfiguration()
                .ReadFrom.Configuration(config, ConfigurationAssemblySource.AlwaysScanDllFiles)
                .WriteTo.Console();

            logConfig = config.GetSection("AppSettings").GetValue("Log", "File") == "File"
                ? logConfig.WriteTo.File("logs/log.txt", rollOnFileSizeLimit: true, fileSizeLimitBytes: 100 * 1024 * 1024, rollingInterval: RollingInterval.Infinite)
                : logConfig.WriteTo.SQLite(Path.Combine(Directory.GetCurrentDirectory(), "log.db"));

            Log.Logger = logConfig.CreateLogger();

            try
            {
                Log.Information("web host start");
                WebHost.CreateDefaultBuilder(args)
                .UseConfiguration(config)
                .UseSerilog()
                .UseStartup<Startup>()
                .Build()
                .Run();
                Log.Information("web host end");
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "Host terminated unexpectedly");
                return;
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }
    }
}