开源的.NET定时任务组件Hangfire开发总结

Posted 2021-12-22 dotNET跨平台

　定时任务调度问题，是一个老生常谈的问题。网上有许多定时任务调度的解决方案，以前主要是使用Window计划和Window服务来做任务定时执行，然后就开始使用定时任务调度框架Quartz.Net。Hangfire这个自带后台任务调度面板，可以在后台手动执行任务的神奇的任务调度框架。

　Hangfire是一个开源的.NET任务调度框架，提供了内置集成化的控制台，可以直观明了的查看作业调度情况，并且Hangfire不需要依赖于单独的应用程序执行（如：windows服务，window计划）。并且支持持久性存储。

最近在搞Hangfire任务，下面总结下几个设置

1、配置面板权限

var filter = new BasicAuthAuthorizationFilter(
            new BasicAuthAuthorizationFilterOptions
            
                SslRedirect = false,
                RequireSsl = false,
                LoginCaseSensitive = false,
                Users = new[]
                
                        new BasicAuthAuthorizationUser
                        
                            Login = System.Configuration.ConfigurationManager.AppSettings["user"],
                               PasswordClear = System.Configuration.ConfigurationManager.AppSettings["pwd"]
                        
                
            );


            var options = new DashboardOptions
            
                AuthorizationFilters = new[] 
                    filter
                
            ;


            app.UseHangfireDashboard("/hangfire", options);

2、已完成的job设置过期，防止数据无限增长

public class SucceededStateExpireHandler : IStateHandler
    
        public TimeSpan JobExpirationTimeout;


        public SucceededStateExpireHandler(int jobExpirationTimeout)
        
            JobExpirationTimeout = TimeSpan.FromMinutes(jobExpirationTimeout);
        


        public string StateName => SucceededState.StateName;


        public void Apply(ApplyStateContext context, IWriteOnlyTransaction transaction)
        
            context.JobExpirationTimeout = JobExpirationTimeout;
        


        public void Unapply(ApplyStateContext context, IWriteOnlyTransaction transaction)
        
        

3、设置工作的线程数

app.UseHangfireServer(new BackgroundJobServerOptions  WorkerCount = int.Parse(System.Configuration.ConfigurationManager.AppSettings["WorkerCount"]) );

4、添加BackgroundJob

try
            
                BackgroundJob.Enqueue(() => CreateJob(info));
            
            catch (Exception ex)
            
                Logger.Default.Error("CreateJob失败 " + ex.ToString());
            
            TextBuffer.WriteLine("Background job has been created.");