quartz.net | 易学教程

How to create quartz job that will runs every N seconds even if job takes more time

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问题 What I'm trying to achieve: I have a secondly trigger that fires every 5 secods, and stateful job, that takes sometimes more than 5 seconds (7 for example) and what I have now start: 00:00:00 end : 00:00:07 start: 00:00:07 < right after previous has finished what I want : start: 00:00:00 it should run at 00:00:05 but it hasn't end : 00:00:07 start: 00:00:10 (5 seconds after previous, successive or not) I have tried quartz.net version 2 and 1. Job: [PersistJobDataAfterExecution]

GetNextFireTimeUtc() returns null while trigger takes place in the futre

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I am trying to delete all the triggers that have expired because Quartz.NET crashes when it faces triggers that will never be fired. So I would like to know the next fire time of my triggers and if they do not have any, then they are expired and should be removed. But now I am seeing that even a trigger that is in the future returns a null for its next fire time: string expression = "0 26 13 17 10 ? 2015"; DateTimeOffset? nextFireTimeUtc = TriggerBuilder.Create().WithCronSchedule(expression).Build().GetNextFireTimeUtc(); As can be seen my cron expression is for 2015. But nextFireTimeUtc

Recover from trigger ERROR state after Job constructor threw an exception?

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问题 When using Quartz.net to schedule jobs, I occasionally receive an exception when instantiating a job. This, in turn causes Quartz to set the trigger for the job to an error state. When this occurs, the trigger will cease firing until some manual intervention occurs (restarting the service since I'm using in-memory job scheduling). How can I prevent the error state from being set, or at the very least, tell Quartz to retry triggers that are in the error state? The reason for the exception is

Quartz job store is related to active data?

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问题 As I understood from Quartz official documentation, AdoStore have to be used for active data storing like JobDataMap and other data. Correct me if I am wrong. Beside of this clarification I would like to know is there any way to load job and trigger definition from database. Kind of plugin or something like the Quartz.Plugin.Xml.XMLSchedulingDataProcessorPlugin is for reading from xml file. If there is not, is it the best solution to implement a custom plugin that will read from database or

Trying to install Quartz.net, having issue running server

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So I have been following the instructions here for installing Quartz.NET. However, when I try running "Quartz.Server.exe -i" from the command prmopt, I get this error: Topshelf.HostFactory Error: 0 : The service terminated abnormally, Topshelf.Host ConfigurationException: The service was not properly configured: [Failure] Command Line An unknown command-line option was found: SWITCH: i (True ) [Success] Name QuartzServer [Success] DisplayName Quartz Server [Success] Description Quartz Job Scheduling Server [Success] ServiceName QuartzServer at Topshelf.Configurators.ValidateConfigurationResult

Quartz.NET remoting - scheduler already exists

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I am creating an application that uses Quartz.NET, which is utilised within a Windows service. There is also an administration backend written in ASP.NET, where administrators can add jobs and monitor the state of the scheduler. I am however having issues with the ASP.NET backend. The connection is made in the Global.asax file, which seems to work at first - when the user logs on to the main dashboard, it works fine. The problem is when the user clicks onto a different page, where it then says the scheduler 'schedService' already exists. Here is my Windows Service code: NameValueCollection

How to make Quartz.NET process synchronously?

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问题 I have a scheduled job that have repeat interval for every 5 mins. It's working fine. But I have a situation in where my first job is not completing in 5 mins and a second job is starting (as it scheduled for 5 mins). I don't want to do that, only one job should be working at a time. How can I do that? This is my code: ISchedulerFactory schedFact = new StdSchedulerFactory(); IScheduler sched = schedFact.GetScheduler(); Trigger emailTrigger = TriggerUtils.MakeMinutelyTrigger(5); emailTrigger

Cron expression every 50 seconds in Quartz

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问题 I'm running my Jobs using Quartz with a cron expression every 50 seconds: Cron_Expression = "0/50 * * * * ?" What happens is that my job runs at the seconds: 50, 60, 50, 60,... and not every 50 seconds! and does not run at the second "0". What is the right cron expression every 50 seconds starting at 0? 回答1: The '/' syntax specifies the increment during the period and not a repeat interval. Admittedly a subtle and confusing difference. In this case there is only one available increment (50

Quartz.Net Initializing Project

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I am new to Quartz.Net and I have been following this tutorial to do my first Job. I followed every step and started from zero 3 times but I cannot make this to work. When I run the project on Visual Studio I get this message from the cmd: Failed: Could not load file or assembly: 'HelloWorldDotNet, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. On Visual Studio output I get: 'HelloWorldQuartzDotNet.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0

Create Cron Expression using Quartz .NET

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Is it possible using the Quartz .NET assembly to generate a cron expression? I saw that the CronScheduleBuilder class has a private member cronExpression which is essentially what I am looking for. Is there any other way to get the cron expression itself? Ian R. O'Brien Possible using ICronTrigger.CronExpressionString CronScheduleBuilder csb = CronScheduleBuilder .WeeklyOnDayAndHourAndMinute(DayOfWeek.Monday, 12, 0); ICronTrigger trigger = (ICronTrigger)TriggerBuilder .Create() .WithSchedule(csb) .Build(); string cronExpression = trigger.CronExpressionString; Thomas Using Ian answer, I have