qlhb/Ropin.IOT.MqttService/Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using Ropin.Inspection.Model.Entities;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Ropin.Core.Extensions.ServiceExtensions;
using Ropin.Inspection.Common.Helper;
using log4net.Config;
using log4net;
using System.Reflection;

namespace Ropin.IOT.MqttService
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            //Configuration = configuration;
            var configBuilder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
            Configuration = configBuilder.Build();
            var logRepo = LogManager.GetRepository(Assembly.GetEntryAssembly());
            XmlConfigurator.Configure(logRepo, new FileInfo("log4net.config"));
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddSingleton(new Appsettings(Configuration));
            services.AddHttpClient();
            services.AddControllersWithViews();

            var mqttOptions = Configuration.GetSection(MqttOptions.Position).Get<MqttOptions>();
            services.AddSingleton<MqttOptions>(mqttOptions);
            services.AddMemoryCache();
            ////services.AddControllers();
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "Ropin.IOT.MqttService", Version = "v1" });
            });
            services.AddRedisCacheSetup();
            services.AddHostedService<MqttWorkService>();

            services.AddNodeServices();

            services.AddSignalR();
            //services.AddSingleton<IConfiguration>(Configuration);

            var connectionString = Configuration["ConnectionSetting:MySqlConnection"];
            ServerVersion serverVersion = ServerVersion.AutoDetect(connectionString);
            services.AddDbContext<InspectionDbContext>(options =>
                options.UseMySql(connectionString, serverVersion));
            //但很多场景下Scoped又不能满足我们，这时候就需要注入一个Singleton的DBContext的工厂方法
            services.AddSingleton<Func<InspectionDbContext>>(() =>
            {
                var optionsBuilder = new DbContextOptionsBuilder<InspectionDbContext>();
                optionsBuilder.UseMySql(connectionString, serverVersion);
                //如果有其他依赖的话，可以通过provider.GetService<XX>()来获取
                return new InspectionDbContext(optionsBuilder.Options);
            });
            services.AddControllers();
            //services.AddMqttClient(mqttOptions);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            MqttClientService._memoryCache = app.ApplicationServices.GetService<IMemoryCache>();
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "Ropin.IOT.MqttService v1"));
            }

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
}