iot/projects/IoTCenter/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.Formatting.Json;
using Serilog.Sinks.Elasticsearch;
using Serilog.Sinks.RollingFile;
using System;
using System.IO;
using System.Linq;
using System.Text;

namespace IoTCenter
{
    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();
            WebHost.CreateDefaultBuilder(args)
                .UseConfiguration(config)
                .ConfigureAppConfiguration((c, o) =>
                {
                    if (config.GetValue<bool>("useConfigServer", false))
                    {
                        o.AddNacosConfiguration(o =>
                        {
                            var section = config.GetSection("nacosConfigServer");
                            o.ServerAddresses = section.GetValue<string>("ServerAddresses").Split(';').ToList();
                            o.Optional = section.GetValue<bool>("Optional");
                            o.DataId = section.GetValue<string>("DataId");
                            o.Group = section.GetValue<string>("Group");
                            o.Tenant = section.GetValue<string>("Tenant");
                        });
                    }
                })
            .ConfigureLogging((c, o) => //http://localhost:9200/_search?size=100
            {
                if (config.GetValue<bool>("useLogServer", false))
                {
                    var url = c.Configuration["elasticsearch:url"];
                    Log.Logger = new LoggerConfiguration()
                        .WriteTo.Elasticsearch(new ElasticsearchSinkOptions(new Uri(url))
                        {
                            TypeName = "_doc",
                            AutoRegisterTemplate = true,
                            AutoRegisterTemplateVersion = AutoRegisterTemplateVersion.ESv7,
                            FailureCallback = e => Console.WriteLine("Unable to submit event " + e.MessageTemplate),
                            EmitEventFailure = EmitEventFailureHandling.WriteToSelfLog |
                                        EmitEventFailureHandling.WriteToFailureSink |
                                        EmitEventFailureHandling.RaiseCallback,
                            FailureSink = new RollingFileSink("logs/log.txt", new JsonFormatter(), fileSizeLimitBytes: 100 * 1024 * 1024, 1)
                        })
                        .CreateLogger();
                }
                else
                {
                    Log.Logger = new LoggerConfiguration().WriteTo.Console().CreateLogger();
                }
                o.AddSerilog();
            })
            .UseStartup<Startup>()
            .Build()
            .Run();
        }
    }
}