iot/projects/JobServer/Startup.cs

using Hangfire;
using Hangfire.MySql;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;
using System.Transactions;

namespace JobServer
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        private readonly string _origins = "AllowAllHeaders";
        public IConfiguration Configuration { get; }

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors(options => options.AddPolicy(_origins,
                builder =>
                {
                    builder.SetIsOriginAllowed(o => true).AllowAnyMethod().AllowAnyHeader().AllowCredentials();
                })
            );

            services.AddHttpClient();

            services.AddControllersWithViews();

            var connectionString = Configuration.GetConnectionString("HangfireConnection");

            services.AddHangfire(configuration => configuration.UseStorage(new MySqlStorage(connectionString, new MySqlStorageOptions
            {
                TransactionIsolationLevel = IsolationLevel.ReadCommitted,
                QueuePollInterval = TimeSpan.FromSeconds(15),
                JobExpirationCheckInterval = TimeSpan.FromHours(1),
                CountersAggregateInterval = TimeSpan.FromMinutes(5),
                PrepareSchemaIfNecessary = true,
                DashboardJobListLimit = 50000,
                TransactionTimeout = TimeSpan.FromMinutes(1),
                TablesPrefix = "Hangfire"
            })));
        }

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
            }

            string basePath = this.Configuration.GetValue<String>("BasePath", "");

            app.UsePathBase(basePath);

            app.UseHangfireDashboard(pathMatch: "/job");

            app.UseHangfireServer();

            app.UseCors(_origins);

            app.UseStaticFiles();

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
            });
        }
    }
}