Quartz.Net調(diào)度框架配置解析

在平時(shí)的工作中，估計(jì)大多數(shù)都做過輪詢調(diào)度的任務(wù)，比如定時(shí)輪詢數(shù)據(jù)庫同步，定時(shí)郵件通知等等。大家通過windows計(jì)劃任務(wù)，windows服務(wù)等都實(shí)現(xiàn)過此類任務(wù)，甚至實(shí)現(xiàn)過自己的配置定制化的框架。那今天就來介紹個(gè)開源的調(diào)度框架Quartz.Net（主要介紹配置的實(shí)現(xiàn)，因?yàn)橛信笥褑栠^此類問題）。調(diào)度的實(shí)現(xiàn)代碼很簡單，在源碼中有大量Demo，這里就略過了。

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Quartz.Net當(dāng)前最新版本Quartz.NET 2.0 beta 1 Released

一、基于文件配置

先看一下簡單的實(shí)現(xiàn)代碼

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using Quartz;
using Quartz.Impl;
using Common.Logging;

namespace Demo
{
 class Program
 {
  static void Main(string[] args)
  {
   
   // First we must get a reference to a scheduler
   ISchedulerFactory sf = new StdSchedulerFactory();
   IScheduler sched = sf.GetScheduler();
   
   sched.Start();   
   sched.Shutdown(true);
   
  }
 }
}

代碼很簡單，配置文件中的quartz基礎(chǔ)配置，以及job,trigger信息是如何加載的？這個(gè)過程是發(fā)生 IScheduler sched = sf.GetScheduler();過程，主要體現(xiàn)在源碼這一段

 public void Initialize()
  {
   // short-circuit if already initialized
   if (cfg != null)
   {
    return;
   }
   if (initException != null)
   {
    throw initException;
   }

   NameValueCollection props = (NameValueCollection) ConfigurationManager.GetSection("quartz");

   string requestedFile = Environment.GetEnvironmentVariable(PropertiesFile);
   string propFileName = requestedFile != null && requestedFile.Trim().Length > 0 ? requestedFile : "~/quartz.config";

   // check for specials
   propFileName = FileUtil.ResolveFile(propFileName);

   if (props == null && File.Exists(propFileName))
   {
    // file system
    try
    {
     PropertiesParser pp = PropertiesParser.ReadFromFileResource(propFileName);
     props = pp.UnderlyingProperties;
     Log.Info(string.Format("Quartz.NET properties loaded from configuration file '{0}'", propFileName));
    }
    catch (Exception ex)
    {
     Log.Error("Could not load properties for Quartz from file {0}: {1}".FormatInvariant(propFileName, ex.Message), ex);
    }

   }
   if (props == null)
   {
    // read from assembly
    try
    {
     PropertiesParser pp = PropertiesParser.ReadFromEmbeddedAssemblyResource("Quartz.quartz.config");
     props = pp.UnderlyingProperties;
     Log.Info("Default Quartz.NET properties loaded from embedded resource file");
    }
    catch (Exception ex)
    {
     Log.Error("Could not load default properties for Quartz from Quartz assembly: {0}".FormatInvariant(ex.Message), ex);
    }
   }
   if (props == null)
   {
    throw new SchedulerConfigException(
     @"Could not find  configuration section from your application config or load default configuration from assembly.
Please add configuration to your application config file to correctly initialize Quartz.");
   }
   Initialize(OverrideWithSysProps(props));
  }

通過上面代碼分析，初始化首先會(huì)檢查系統(tǒng)config中是否有 configuration section節(jié)點(diǎn) （config指的app.config,web.config)，如果系統(tǒng)config有quartz節(jié)點(diǎn)，則直接加載此處的配置信息。如果系統(tǒng)config沒有quartz的基礎(chǔ)配置信息，則會(huì)繼續(xù)查找是否有quartz.config/Quartz.quartz.config 這兩個(gè)配置文件的存在，如果有則加載配置信息，如果沒有則扔出初始化配置異常。

而jobs.xml（調(diào)度的任務(wù)和觸發(fā)器plugin節(jié)點(diǎn)配置文件）

app.config/web.config 中plugin配置

quartz.config 中plugin配置指向（quartz.plugin.xml.type / quartz.plugin.xml.fileNames）

# You can configure your scheduler in either  configuration section
# or in quartz properties file
# Configuration section has precedence

quartz.scheduler.instanceName = ServerScheduler

# configure thread pool info
quartz.threadPool.type = Quartz.Simpl.SimpleThreadPool, Quartz
quartz.threadPool.threadCount = 10
quartz.threadPool.threadPriority = Normal

#--------------------------------*************plugin配置------------------------------------
# job initialization plugin handles our xml reading, without it defaults are used
quartz.plugin.xml.type = Quartz.Plugin.Xml.XMLSchedulingDataProcessorPlugin, Quartz
quartz.plugin.xml.fileNames = ~/quartz_jobs.xml

# export this server to remoting context
quartz.scheduler.exporter.type = Quartz.Simpl.RemotingSchedulerExporter, Quartz
quartz.scheduler.exporter.port = 555
quartz.scheduler.exporter.bindName = QuartzScheduler
quartz.scheduler.exporter.channelType = tcp
quartz.scheduler.exporter.channelName = httpQuartz

二、基于代碼的方式

這種情況直接通過代碼實(shí)現(xiàn)的，官方DEMO很多都是如此，我們舉個(gè)例子

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text; using Quartz;
using Quartz.Impl;
using System.Threading;
using Common.Logging;

namespace Demo
{
 class Program
 {
  static void Main(string[] args)
  {
   ILog log = LogManager.GetLogger(typeof(Demo.HelloJob));

   log.Info("------- Initializing ----------------------");

   // First we must get a reference to a scheduler
   ISchedulerFactory sf = new StdSchedulerFactory();
   IScheduler sched = sf.GetScheduler();

   log.Info("------- Initialization Complete -----------");


   //---------------------------------------代碼添加job和trigger
   // computer a time that is on the next round minute
   DateTimeOffset runTime = DateBuilder.EvenMinuteDate(DateTimeOffset.UtcNow);

   log.Info("------- Scheduling Job -------------------");

   // define the job and tie it to our HelloJob class
   IJobDetail job = JobBuilder.Create()
    .WithIdentity("job1", "group1")
    .Build();

   // Trigger the job to run on the next round minute
   ITrigger trigger = TriggerBuilder.Create()
    .WithIdentity("trigger1", "group1")
    .StartAt(runTime)
    .Build();

   // Tell quartz to schedule the job using our trigger
   sched.ScheduleJob(job, trigger);
   log.Info(string.Format("{0} will run at: {1}", job.Key, runTime.ToString("r")));

   // Start up the scheduler (nothing can actually run until the 
   // scheduler has been started)
   sched.Start();
   log.Info("------- Started Scheduler -----------------");

   // wait long enough so that the scheduler as an opportunity to 
   // run the job!
   log.Info("------- Waiting 65 seconds... -------------");

   // wait 65 seconds to show jobs
   Thread.Sleep(TimeSpan.FromSeconds(65));

   // shut down the scheduler
   log.Info("------- Shutting Down ---------------------");
   sched.Shutdown(true);
   log.Info("------- Shutdown Complete -----------------");
  }
 }
}

其實(shí)代碼方式已經(jīng)實(shí)現(xiàn)了和配置文件混搭的方式了。但是這種對方式是通過配置關(guān)聯(lián)加載job與trigger配置，我們還有第三種方式，自己加載job與trigger配置文件。

三、手動(dòng)加載配置文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text; 
using Quartz;
using Quartz.Xml;
using Quartz.Impl;
using Quartz.Simpl;
using System.Threading;
using Common.Logging;
using System.IO;

namespace Demo
{
 class Program
 {
  static void Main(string[] args)
  {    
   XMLSchedulingDataProcessor processor = new XMLSchedulingDataProcessor(new SimpleTypeLoadHelper());
   ISchedulerFactory sf = new StdSchedulerFactory();
   IScheduler scheduler = sf.GetScheduler();

   Stream s = new StreamReader("~/quartz.xml").BaseStream;
   processor.ProcessStream(s, null);
   processor.ScheduleJobs(scheduler);

   scheduler.Start();
   scheduler.Shutdown();
   
  }
 }
}

亦或者這樣

using System.Text; 
using Quartz;
using Quartz.Xml;
using Quartz.Impl;
using Quartz.Simpl;
using System.Threading;
using Common.Logging;
using System.IO;

namespace Demo
{
 class Program
 {
  static void Main(string[] args)
  {    
   XMLSchedulingDataProcessor processor = new XMLSchedulingDataProcessor(new SimpleTypeLoadHelper());
   ISchedulerFactory sf = new StdSchedulerFactory();
   IScheduler scheduler = sf.GetScheduler();

   
   processor.ProcessFileAndScheduleJobs("~/quartz.xml",scheduler);
   
   scheduler.Start();
   scheduler.Shutdown();
   
  }
 }
}

目前根據(jù)源碼分析大致就這幾種配置方式，很靈活可以任意組合。關(guān)于quartz的使用源碼很詳細(xì)，并且園子量有大量的學(xué)習(xí)文章。

記住quartz的配置讀取方式首先app.config/web.config ---->quartz.config/Quartz.quartz.config ---->quartz_jobs.xml .

通過代碼方式我們可以改變quartz_jobs.xml 的指向即自己新命名的xml文件

（默認(rèn)的quartz_jobs.xml是在XMLSchedulingDataProcessor.QuartzXmlFileName = "quartz_jobs.xml"被指定的）

方式一，通過quartz節(jié)點(diǎn)/quartz.config指向指定的jobs.xml。

方式二，通過XMLSchedulingDataProcessor 加載指定的jobs.xml

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持創(chuàng)新互聯(lián)。

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Quartz.Net調(diào)度框架配置解析

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