在 ASP.net 核心上使用 hangfire 和 structuremap 有没有更好的方法？

Question

我在 asp.net 核心上使用带 hangfire 的结构图，应用程序没有错误，但 hangfire 不处理 queue/schedule 任务，即使数据已经在数据库中。这是我的代码片段配置

public IServiceProvider ConfigureServices(IServiceCollection services)
    {
        // setup automapper
        var config = new AutoMapper.MapperConfiguration(cfg =>
        {
            cfg.AddProfile(new AutoMapperProfileConfiguration());
        });

        var mapper = config.CreateMapper();
        services.AddSingleton(mapper);


        // Bind settings parameter
        services.Configure<AppSettings>(Configuration.GetSection("AppSettings"));

        // Add framework services.
        services.AddApplicationInsightsTelemetry(Configuration);
        services.Configure<RouteOptions>(options => options.LowercaseUrls = true);
        services.AddDbContext<DefaultContext>(options =>
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

        services.AddHangfire(options => 
            options.UseSqlServerStorage(Configuration.GetConnectionString("DefaultConnection")));

        services.AddMvc();
        // ASP.NET use the StructureMap container to resolve its services.
        return ConfigureIoC(services);
    }

    public IServiceProvider ConfigureIoC(IServiceCollection services)
    {
        var container = new Container();

        GlobalConfiguration.Configuration.UseStructureMapActivator(container);

        container.Configure(config =>
        {
            // Register stuff in container, using the StructureMap APIs...
            config.Scan(_ =>
            {
                _.AssemblyContainingType(typeof(Startup));
                _.WithDefaultConventions();
                _.AddAllTypesOf<IApplicationService>();
                _.ConnectImplementationsToTypesClosing(typeof(IOptions<>));
            });
            config.For<JobStorage>().Use(new SqlServerStorage(Configuration.GetConnectionString("DefaultConnection")));
            config.For<IJobFilterProvider>().Use(JobFilterProviders.Providers);

            config.For<ILog>().Use(c => LoggerFactory.LoggerFor(c.ParentType)).AlwaysUnique();
            XmlDocument log4netConfig = new XmlDocument();
            log4netConfig.Load(File.OpenRead("log4net.config"));

            var repo = LogManager.CreateRepository(
                Assembly.GetEntryAssembly(), typeof(log4net.Repository.Hierarchy.Hierarchy));

            XmlConfigurator.Configure(repo, log4netConfig["log4net"]);
            //Populate the container using the service collection
            config.Populate(services);
        });

        return container.GetInstance<IServiceProvider>();
    }

有没有更好的方法在 asp.net 核心上使用 hangfire 和 structuremap？我是不是遗漏了什么所以 hangfire 无法正常工作？

我的Hangfire结构图实现

using Hangfire;
using StructureMap;

namespace Lumochift.Helpers
{
    /// <summary>
    /// Bootstrapper Configuration Extensions for StructureMap.
    /// </summary>
    public static class StructureMapBootstrapperConfigurationExtensions
    {
        /// <summary>
        /// Tells bootstrapper to use the specified StructureMap container as a global job activator.
        /// </summary>
        /// <param name="configuration">Bootstrapper Configuration</param>
        /// <param name="container">StructureMap container that will be used to activate jobs</param>
        public static void UseStructureMapActivator(this GlobalConfiguration configuration, IContainer container)
        {
            configuration.UseActivator(new StructureMapJobActivator(container));
        }
    }
}


using Hangfire;
using StructureMap;
using System;

namespace Lumochift.Helpers
{
    public class StructureMapJobActivator : JobActivator
    {
        private readonly IContainer _container;

        /// <summary>
        /// Initializes a new instance of the <see cref="StructureMapJobActivator"/>
        /// class with a given StructureMap container
        /// </summary>
        /// <param name="container">Container that will be used to create instances of classes during
        /// the job activation process</param>
        public StructureMapJobActivator(IContainer container)
        {
            if (container == null) throw new ArgumentNullException(nameof(container));

            _container = container;
        }

        /// <inheritdoc />
        public override object ActivateJob(Type jobType)
        {
            return _container.GetInstance(jobType)
        }

        /// <inheritdoc />
        public override JobActivatorScope BeginScope(JobActivatorContext context)
        {
            return new StructureMapDependencyScope(_container.GetNestedContainer());
        }


        private class StructureMapDependencyScope : JobActivatorScope
        {
            private readonly IContainer _container;

            public StructureMapDependencyScope(IContainer container)
            {
                _container = container;
            }

            public override object Resolve(Type type)
            {
                return _container.GetInstance(type);
            }

            public override void DisposeScope()
            {
                _container.Dispose();
            }
        }
    }
}

控制器上的 hangfire 调用示例[=16=]

    BackgroundJob.Enqueue<CobaService>((cb) => cb.GetCoba());
    BackgroundJob.Schedule<CobaService>((cb) => cb.GetCoba(), TimeSpan.FromSeconds(5) );

截图：

Answer 1

您应该 return StructureMapDependencyScope 使用来自 BeginScope:

的嵌套容器

public override JobActivatorScope BeginScope(JobActivatorContext context)
{
    return new StructureMapDependencyScope(_container.GetNestedContainer());
}

此外，我不会将容器与 Activator.CreateInstance 混合使用，而只是在 ActivateJob

中使用 _container.GetInstance(jobType)

Answer 2

你应该使用 Hangfire.AspNetCore nuget 包。

它使用 AspNetCoreJobActivator 作为默认的作业激活器，因此您不必创建自己的激活器。

AspNetCoreJobActivator 使用 IServiceScope.ServiceProvider.GetRequiredService(type) 方法解决依赖关系。同一个 ServiceProvider，您 return 来自 ConfigureServices，所有服务均由 structuremap 配置。

Implementation of AddHangfire method

Answer 3

主要问题不在hangfire的实现结构图上。起初虽然我认为这是因为 SQL 服务器版本但是降级后问题仍然存在。仅排队但未激活作业。更改配置设置后我发现了问题。

"DefaultConnection": "Server=127.0.0.1,1434;Database=db;User Id=sa;Password=pass;MultipleActiveResultSets=true"

这就是问题所在，我使用端口 1434 后我更改了未指定端口的使用或使用端口 1433 一切正常运行。不再有作业卡在队列中。

在 ASP.net 核心上使用 hangfire 和 structuremap 有没有更好的方法？

Is there any better way using hangfire with structuremap on ASP.net core?

c#

structuremap

asp.net

hangfire

asp.net-core