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README
Apache-2.0

Brun是netcore中轻量级后台任务组件,asp.net中简单易用

  • 轻松的把Http请求内的某些业务代码转移到请求外执行,以便http请求快速返回,后台继续执行业务代码。
  • 所有任务默认多线程并行执行,并行数基于dotnet默认线程池。
  • 后台任务内可以直接从IOC获取已配置的服务,无需自己单独实现复杂的业务逻辑。
  • 多种Worker保证了触发后台任务的灵活性,基于消息通知、HTTP请求、计划时间的任务分别有不同类型的Worker支持。也可以扩展适合自己的Worker。
  • Worker中保存了所有任务执行的记录,异常捕获,异常堆栈,可以实时监控任务执行状态,及Log各种日志。
  • 进程正常结束时,会等待所有未完成任务执行完成,在配置中可以设置最大等待时间。

软件架构

dotnet core的后台任务组件,控制台和web项目都可以直接用。

工作中心Worker,定义了后台任务以什么样的流程来执行
  • OnceWorker 调用一次执行一次的后台任务,可配置自定义数据。在Action里、服务里、任何其他位置调用. 配置BackRun来执行自己的业务逻辑,一个Worker可以配置多个BackRun。

  • SynchroWorker 所有后台任务默认都是并行执行,SynchroWorker强制串行执行,基于严格的流程控制,只需要一行代码的拦截器即可把并行任务控制成串行执行。

  • QueueWorker 队列任务,用QueueWorker添加string到队列,后台任务会立即执行。配置QueueBackRun来写自己的任务逻辑,请自己序列化String,一个Worker可以配置多个QueueBackRun。。

  • TimeWorker 简单的周期执行任务,配置一个TimeSpan,周期循环执行定义的BackRun。继承BackRun/ScopeBackRun来写自己的任务逻辑。

  • PlanTimeWorker 按时间计划执行的任务,配置Cro表达式Cron表达式的简化版),在指定时间执行BackRun。继承BackRun/ScopeBackRun来写自己的任务逻辑。一个BackRun可以配置多个时间计划,一个时间计划可以对应多个不同类型的BackRun。

IBackRun:写业务逻辑的地方,需要自己继承实现抽象方法,不同的Worker可能要求不同的BackRun
  • BackRun 最基础的执行逻辑,公开一个字典属性,在同一个Worker实例中每次执行时共享数据,OnceWorker和TimeWorker都使用这个。不同的BackRun可以配置给同一个OnceWorker。
  • QueueBackRun QueueWorker独有的执行器,接受一个string类型的参数,为每次添加到队列的String数据,目前需要自己序列化。不同的QueueBackRun可以配置给同一个QueueWorke。
  • ScopeBackRun 和BackRun类似,不过每次调用会创建属于自己的Ioc生命周期,GetService<T>取对象时可以直接取services.AddScoped的服务(BackRun中需要自己NewScope)。
WorkerObserver:Worker的观察者(拦截器),目前只是简单的计数、Log,用户也能方便的添加自定义拦截器,后期会用他们实现持久化
WorkerContext:Worker的上下文,储存每个Worker实例运行时的数据,实时监控就是取它的数据
安装教程

nuget搜索Brun 或自己编译

使用说明

  1. 创建一个继承自BackRun的类
//自己任务逻辑的例子,队列任务请继承QueueBackRun
public class TestHttpWorker : BackRun
    {
        public async override Task Run(CancellationToken stoppingToken)
        {

            for (int i = 0; i < 1; i++)
            {
                var log = GetRequiredService<ILogger<TestHttpWorker>>();
                
                HttpClient httpClient = new HttpClient();
                var r = await httpClient.GetAsync("http://127.0.0.1:5000/", stoppingToken);
                log.LogWarning("httpClient发起了请求,state:" + r.StatusCode);

                //也能使用自带的ioc获取服务,瞬时和单例可以直接取,Scoped的需要自己创建CreateScope
                IHttpClientFactory factory = GetRequiredService<IHttpClientFactory>();
                var fclient = factory.CreateClient();
                var fr = await fclient.GetAsync("http://127.0.0.1:5000/", stoppingToken);
                log.LogWarning("fclient发起了请求,state:" + fr.StatusCode);

                using (var scope = NewScope())
                {
                    var testScope = scope.ServiceProvider.GetRequiredService<ITestScopeService>();
                    string scopeR = testScope.Todo();
                    log.LogInformation(scopeR);
                }
            }
        }
    }
  1. 服务配置
public class Program
    {
        public static string BrunKey = Guid.NewGuid().ToString();
        public static string QueueKey = Guid.NewGuid().ToString();
        public static string TimeKey = Guid.NewGuid().ToString();
        public static string ScopeKey = Guid.NewGuid().ToString();
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                })
                .ConfigureServices(services =>
                {
                    //其他服务
                    services.AddHttpClient();
                    //services.AddScoped<ITestScopeService, TestScopeService>();

                    //配置单次任务
                    WorkerBuilder.Create<TestHttpWorker>()
                    .SetKey(BrunKey)
                    .Build();
                    
                    WorkerBuilder.Create<LongTimeBackRun>()
                    .Add<LongTimeBackRun>()//同一个OnceWorker中配置多个BackRun,使用:worker.RunDontWait<TBackRun>()
                    .SetName(nameof(LongTimeBackRun))
                    .Build();

                    //配置Scope任务
                    //WorkerBuilder.Create<TestScopeBackRun>()
                    //.SetKey(ScopeKey)
                    //.Build();


                    //配置队列任务
                    WorkerBuilder.CreateQueue<TestQueueWorker>()
                    .AddQueue<TestQueueErrorWorker>()//配置多个QueueBackRrun,使用:worker.Enqueue<TQueueBackRun>(msg)
                    .SetKey(QueueKey)
                    .Build();


                    //配置简单循环执行任务
                    //WorkerBuilder.CreateTime<ErrorTestRun>()
                    WorkerBuilder.CreateTime<LongTimeBackRun>()
                    .SetCycle(TimeSpan.FromSeconds(5), true)
                    .SetKey(TimeKey)
                    .Build()
                    ;

                    //配置复杂时间计划任务
                    WorkerBuilder.CreatePlanTime<LogTimeRun>("0/5 * * * *", "3,33,53 * * * *", "5 * * * *", "* * * * *")
                    .AddPlanTime<ErrorTestRun>("* * * * *")
                    .SetKey(PlanKey)
                    .Build();

                    //启动后台服务
                    services.AddBrunService();
                })
                ;
    }
  1. Action中使用例子
public class HomeController : Controller
    {
        private readonly ILogger<HomeController> _logger;
        Brun.IWorkerServer _workerServer;
        public HomeController(ILogger<HomeController> logger)
        {
            _logger = logger;
            _workerServer = WorkerServer.Instance;//或者构造函数中用 IWorkerServer 取
        }

        public IActionResult Index()
        {
            return View();
        }

        public IActionResult Once()
        {
            //运行后台任务
            _workerServer.GetOnceWorker(Program.BrunKey).RunDontWait();
            return View();
        }
        public IActionResult Queue(string msg)
        {
            //运行队列任务
            IQueueWorker worker = _workerServer.GetQueueWorker(Program.QueueKey);
            for (int i = 0; i < 100; i++)
            {
                worker.Enqueue(msg);
            }
            return View();
        }
        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult Error()
        {
            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
        }
    }
  1. 完整代码参考simples/BrunWebTest项目,DocFx生成的文档:http://www.dotnet6.net/api/Brun.html

Cro表达式 :Cron表达式的简化版

  • 合并了日期和星期域,比Cron表达式少一个域,Cron表达式是6-7个域,Cro是5-6个。移除了第6个DayofWeek域
  • 不支持第几个星期几这种计划,其他的基本都能满足

Cro域的格式,5-6个域以空格分开

秒(0-59) 分(0-59) 时(0-23) 日/星期(1-31/1-7) 月(1-12) 年(1970-2099)
* , - / 数字 * , - / 数字 * , - / 数字 * , - L 数字 X * , - / 数字 可空 * , - / 数字
  • * 匹配任意,如秒域指定 * 表示每秒都会执行, 年可空,默认也是*
  • , 数组匹配,如分钟域指定 0,10,40 表示0分,10分,40分钟的时候都满足条件
  • - 范围匹配,如小时域指定 10-17 表示10点到17点内都满足条件
  • / 步进匹配,如日期域指定 1/2 表示从1月开始(包含1月),每过2个月,那么3月,5月,7月...满足条件。*/2等同1/2。如果是秒(初始是0)*/10 等同0/10。还能和范围组合使用 3-12/3 表示在3-12月内,从3月开始,每过3个月满足条件。注意:星期暂时不支持步进(这种需求很少)。
  • L 只能在日期域中使用,表示最后一天,2L表示最后一天再往前2天,30L在遇到不是31天的月份都会跳过当月。
  • X 只能在日期域中使用,表示以星期判断,和日期互斥,X1表示每个星期天,X2表示星期一,X7表示星期六。X2-6表示星期一到星期五,X1,7表示周末。

例子

  • 每秒触发:* * * * * 每分钟触发:0 * * * *
  • 每天早上9点整触发:0 0 9 * * 每天早9点和晚6点触发:0 0 9,18 * *
  • 周一到周六每天早上7点半触发:0 30 7 X2-7 *

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  3. 提交代码
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netcore 轻量级后台任务,asp.net中简单易用。 展开 收起
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