如何在不重启服务器的情况下添加带有触发器的作业来运行Quartz.NET调度程序实例?

时间:2014-06-20 06:17:11

标签: c# c#-4.0 quartz.net

是否可以添加带有触发器的作业来运行Quartz.NET调度程序实例而无需重新启动服务器?

2 个答案:

答案 0 :(得分:7)

ADOJobStore的一个相当强大的实现是拥有一个自定义表来存储作业,并创建一个继承自ISchedulerPlugin和IJob的类,以自动为您的作业创建计划。

您的配置如下所示:

<add key="quartz.plugin.sqlquartzjobs.type" value="(JobSchedulerPlugin assembly path)" />
<add key="quartz.plugin.sqlquartzjobs.RescanCronExpression" value="0 0/5 * * * ?" /> //plugin should fire every five minutes
<add key="quartz.plugin.sqlquartzjobs.ConnectionString" value="(your connection string)" />

您的插件/工作类可能如下所示:

public class JobSchedulerPlugin : ISchedulerPlugin, IJob
{
        //Entry point for plugin, quartz server runs when it starts
        public void Initialize(string pluginName, IScheduler sched)
        {
            Name = pluginName;
            Scheduler = sched;
        }

        //Runs after Initialize()
        public void Start()
        {
                //schedule plugin as a job
            JobDataMap jobData = new JobDataMap();
            jobData["ConnectionString"] = ConnectionString;

            IJobDetail job = JobBuilder.Create(this.GetType())
                .WithDescription("Job to rescan jobs from SQL db")
                .WithIdentity(new JobKey(JobInitializationPluginJobName, JobInitializationPluginGroup))
                .UsingJobData(jobData)
                .Build();

             TriggerKey triggerKey = new TriggerKey(JobInitializationPluginJobTriggerName, JobInitializationPluginGroup);

             ITrigger trigger = TriggerBuilder.Create()
                 .WithCronSchedule(ConfigFileCronExpression)
                 .StartNow()
                 .WithDescription("trigger for sql job loader")
                 .WithIdentity(triggerKey)
                 .WithPriority(1)
                 .Build();

             Scheduler.ScheduleJob(job, trigger);
        }
}

现在,JobSchedulerPlugin已经进入QRTZ_TRIGGERS的触发器,该触发器将以最高优先级每五分钟触发一次。您可以使用它从自定义表中加载作业(让我们称之为QUARTZJOBS)。 QUARTZJOBS可以包含诸如工作名,装配路径,日期,状态等信息,以及可用于帮助您有效创建触发器的任何信息。它还应该包含作业的cron表达式。这是触发器触发时可以执行的操作:

//Entry point of every job
public void Execute(IJobExecutionContext context)
{
    Scheduler = context.Scheduler;

    JobCollection jobs = LoadJobs(context.JobDetail.JobDataMap["ConnectionString"].ToString());
    JobsWithTriggers jobTriggers = CreateTriggers(jobs);
    SchedulerJob(jobTriggers);
}

//You can use ADO.NET or an ORM here to load job information from the the table
//and push it into a class. 
protected JobCollection LoadJobs(string connectionString);

//In this class you can create JobDetails and ITriggers for each job
//and push them into a custom class
protected JobsWithTriggers CreateTriggers(jobs);

//Finally here you can schedule the jobs
protected void ScheduleJobs(jobstriggers)

在上面的每个类中,您可以添加自定义验证,以确保在状态或cron表达式发生更改时正确处理触发器。

使用此解决方案,永远不需要重新启动服务器。插件/作业类将扫描表并采取相应的行动。

答案 1 :(得分:0)

您的数据存储是什么?

这是一个场景......有点偏僻:

您可以编写一个小型控制台应用程序(或类似的),即“Job Populater”。

您可以将其连接到从xml文件中提取作业定义,然后将它们推送到ADO数据存储区(sql server)。

这是我的石英配置:

<quartz>

    <!-- 
    This configuration is a way to have jobs defined in xml, but will get them written to the database.
    See https://stackoverflow.com/questions/21589964/ramjobstore-quartz-jobs-xml-to-adojobstore-data-move/ 
    -->


    <add key="quartz.plugin.xml.type" value="Quartz.Plugin.Xml.XMLSchedulingDataProcessorPlugin, Quartz" />
    <add key="quartz.plugin.xml.fileNames" value="~/Quartz_Jobs_001.xml" />
    <!-- 
    <add key="quartz.plugin.xml.ScanInterval" value="10" />
    -->

    <add key="quartz.jobStore.type" value="Quartz.Impl.AdoJobStore.JobStoreTX, Quartz" />
    <add key="quartz.jobStore.driverDelegateType" value="Quartz.Impl.AdoJobStore.SqlServerDelegate, Quartz"/>
    <add key="quartz.jobStore.dataSource" value="default"/>
    <add key="quartz.dataSource.default.connectionString" value="Server=MyServer\MyInstance;Database=QuartzDB;Trusted_Connection=True;Application Name='quartz_config';"/>
    <add key="quartz.dataSource.default.provider" value="SqlServer-20"/>

</quartz>

哪个(正如你在xml的评论中看到的那样),我得到了帮助。

这是原作: RAMJobStore (quartz_jobs.xml) to AdoJobStore Data Move