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标签（空格分隔）： quartz.net job
最近工作上要用job，公司的job有些不满足个人的使用，于是就想自己搞一个job站练练手，网上看了一下，发现quartz，于是就了解了一下。
目前个人使用的是asp.net core,在core2.0下面进行的开发。
第一版自己简单的写了一个调度器。
我要评论public static class schedulermanage
{
private static ischeduler _scheduler = null;
private static object obj = new object();
public static ischeduler scheduler
{
get
{
var scheduler = _scheduler;
if (scheduler == null)
{
//在这之前有可能_scheduler被改变了scheduler用的还是原来的值
lock (obj)
{
//这里读取最新的内存里面的值赋值给scheduler，保证读取到的是最新的_scheduler
scheduler = volatile.read(ref _scheduler);
if (scheduler == null)
{
scheduler = getscheduler().result;
volatile.write(ref _scheduler, scheduler);
}
}
}
return scheduler;
}
}
public static async task<baseresponse> runjob(ijobdetail job, itrigger trigger)
{
var response = new baseresponse();
try
{
var isexist = await scheduler.checkexists(job.key);
var time = datetimeoffset.now;
if (isexist)
{
//恢复已经存在任务
await scheduler.resumejob(job.key);
}
else
{
time = await scheduler.schedulejob(job, trigger);
}
response.issuccess = true;
response.msg = time.tostring("yyyy-mm-dd hh:mm:ss");
}
catch (exception ex)
{
response.msg = ex.message;
}
return response;
}
public static async task<baseresponse> stopjob(jobkey jobkey)
{
var response = new baseresponse();
try
{
var isexist = await scheduler.checkexists(jobkey);
if (isexist)
{
await scheduler.pausejob(jobkey);
}
response.issuccess = true;
response.msg = "暂停成功！！";
}
catch (exception ex)
{
response.msg = ex.message;
}
return response;
}
public static async task<baseresponse> deljob(jobkey jobkey)
{
var response = new baseresponse();
try
{
var isexist = await scheduler.checkexists(jobkey);
if (isexist)
{
response.issuccess = await scheduler.deletejob(jobkey);
}
}
catch (exception ex)
{
response.issuccess = false;
response.msg = ex.message;
}
return response;
}
private static async task<ischeduler> getscheduler()
{
namevaluecollection props = new namevaluecollection() {
{"quartz.serializer.type", "binary" }
};
stdschedulerfactory factory = new stdschedulerfactory(props);
var scheduler = await factory.getscheduler();
await scheduler.start();
return scheduler;
}
}
简单的实现了，动态的运行job，暂停job，添加job。弄完以后，发现貌似没啥问题，只要自己把运行的job信息找张表存储一下，好像都ok了。
轮到发布的时候，突然发现现实机器不止一台，是通过nigix进行反向代理。突然发现以下几个问题：
1，多台机器很有可能一个job在多台机器上运行。
2，当进行部署的时候，必须得停掉机器，如何在机器停掉以后重新部署的时候自动恢复正在运行的job。
3，如何均衡的运行所有job。
1，第一个问题：由于是经过nigix的反向代理，添加job和运行job只能落到一台服务器上，基本没啥问题。个人控制好runjob的接口，运行了一次，把jobdetail的那张表的运行状态改成已运行，也就不存在多个机器同时运行的情况。
2，在第一个问题解决的情况下，由于我们公司的nigix反向代理的逻辑是：均衡策略。所以均衡运行所有job都没啥问题。
3，重点来了！！！！
如何在部署的时候恢复正在运行的job？
由于我们已经有了一张jobdetail表。里面可以获取到哪些正在运行的job。wome我们把他找出来直接在程序启动的时候运行一下不就好了吗嘛。
下面是个人实现的：
//hostedservice，在主机运行的时候运行的一个服务
public class hostedservice : ihostedservice
{
public hostedservice(ischedulerjob schedulercenter)
{
_schedulerjob = schedulercenter;
}
private ischedulerjob _schedulerjob = null;
public async task startasync(cancellationtoken cancellationtoken)
{
loghelper.writelog("开启hosted+env:"+env);
var reids= new redisoperation();
if (reids.setnx("redisjoblock", "1"))
{
await _schedulerjob.startallruningjob();
}
reids.expire("redisjoblock", 300);
}
public async task stopasync(cancellationtoken cancellationtoken)
{
loghelper.writelog("结束hosted");
var redis = new redisoperation();
if (redis.redisexists("redisjoblock"))
{
var count=redis.delkey("redisjoblock");
loghelper.writelog("删除reidskey-redisjoblock结果：" + count);
}
}
}
//注入用的特性
[servicedescriptor(typeof(ischedulerjob), servicelifetime.transient)]
public class schedulercenter : ischedulerjob
{
public schedulercenter(ischedulerjobfacade schedulerjobfacade)
{
_schedulerjobfacade = schedulerjobfacade;
}
private ischedulerjobfacade _schedulerjobfacade = null;
public async task<baseresponse> deljob(schedulerjobmodel jobmodel)
{
var response = new baseresponse();
if (jobmodel != null && jobmodel.jobid != 0 && jobmodel.jobname != null)
{
response = await _schedulerjobfacade.modify(new schedulerjobmodifyrequest() { jobid = jobmodel.jobid, dataflag = 0 });
if (response.issuccess)
{
response = await schedulermanage.deljob(getjobkey(jobmodel));
if (!response.issuccess)
{
response = await _schedulerjobfacade.modify(new schedulerjobmodifyrequest() { jobid = jobmodel.jobid, dataflag = 1 });
}
}
}
else
{
response.msg = "请求参数有误";
}
return response;
}
public async task<baseresponse> runjob(schedulerjobmodel jobmodel)
{
if (jobmodel != null)
{
var jobkey = getjobkey(jobmodel);
var trigglebuilder = triggerbuilder.create().withidentity(jobmodel.jobname + "trigger", jobmodel.jobgroup).withcronschedule(jobmodel.jobcron).startat(jobmodel.jobstarttime);
if (jobmodel.jobendtime != null && jobmodel.jobendtime != new datetime(1900, 1, 1) && jobmodel.jobendtime == new datetime(1, 1, 1))
{
trigglebuilder.endat(jobmodel.jobendtime);
}
trigglebuilder.forjob(jobkey);
var triggle = trigglebuilder.build();
var data = new jobdatamap();
data.add("***", "***");
data.add("***", "***");
data.add("***", "***");
var job = jobbuilder.create<schedulerjob>().withidentity(jobkey).setjobdata(data).build();
var result = await schedulermanage.runjob(job, triggle);
if (result.issuccess)
{
var response = await _schedulerjobfacade.modify(new schedulerjobmodifyrequest() { jobid = jobmodel.jobid, jobstate = 1 });
if (!response.issuccess)
{
await schedulermanage.stopjob(jobkey);
}
return response;
}
else
{
return result;
}
}
else
{
return new baseresponse() { msg = "job名称为空！！" };
}
}
public async task<baseresponse> stopjob(schedulerjobmodel jobmodel)
{
var response = new baseresponse();
if (jobmodel != null && jobmodel.jobid != 0 && jobmodel.jobname != null)
{
response = await _schedulerjobfacade.modify(new schedulerjobmodifyrequest() { jobid = jobmodel.jobid, jobstate = 2 });
if (response.issuccess)
{
response = await schedulermanage.stopjob(getjobkey(jobmodel));
if (!response.issuccess)
{
response = await _schedulerjobfacade.modify(new schedulerjobmodifyrequest() { jobid = jobmodel.jobid, jobstate = 2 });
}
}
}
else
{
response.msg = "请求参数有误";
}
return response;
}
private jobkey getjobkey(schedulerjobmodel jobmodel)
{
return new jobkey($"{jobmodel.jobid}_{jobmodel.jobname}", jobmodel.jobgroup);
}
public async task<baseresponse> startallruningjob()
{
try
{
var joblistresponse = await _schedulerjobfacade.querylist(new schedulerjoblistrequest() { dataflag = 1, jobstate = 1, environment=kernel.environment.tolower() });
if (!joblistresponse.issuccess)
{
return joblistresponse;
}
var joblist = joblistresponse.models;
foreach (var job in joblist)
{
await runjob(job);
}
return new baseresponse() { issuccess = true, msg = "程序启动时，启动所有运行中的job成功！！" };
}
catch (exception ex)
{
loghelper.writeexceptionlog(ex);
return new baseresponse() { issuccess = false, msg = "程序启动时，启动所有运行中的job失败！！" };
}
}
}
在程序启动的时候，把所有的job去运行一遍，当中对于多次运行的用到了redis的分布式锁，现在启动的时候锁住，不让别人运行，在程序卸载的时候去把锁释放掉！！感觉没啥问题，主要是可能负载均衡有问题，全打到一台服务器上去了，勉强能够快速的打到效果。当然高可用什么的就先牺牲掉了。
坑点又来了
大家知道，在稍微大点的公司，运维和开发是分开的，公司用的daoker进行部署，在程序停止的时候，不会调用
hostedservice的stopasync方法！！
当时心里真是一万个和谐和谐奔腾而过!!
个人也就懒得和运维去扯这些东西了。最后的最后就是：设置一个redis的分布式锁的过期时间，大概预估一个部署的时间，只要在部署直接，锁能够在就行了，然后每次部署的间隔要大于锁过期时间。好麻烦，说多了都是泪！！
public async task<ischeduler> getscheduler()
{
var properties = new namevaluecollection();
properties["quartz.serializer.type"] = "binary";
//存储类型
properties["quartz.jobstore.type"] = "quartz.impl.adojobstore.jobstoretx, quartz";
//表明前缀
properties["quartz.jobstore.tableprefix"] = "qrtz_";
//驱动类型
properties["quartz.jobstore.driverdelegatetype"] = "quartz.impl.adojobstore.sqlserverdelegate, quartz";
//数据库名称
properties["quartz.jobstore.datasource"] = "scheduljob";
//连接字符串data source = myserveraddress;initial catalog = mydatabase;user id = myusername;password = mypassword;
properties["quartz.datasource.scheduljob.connectionstring"] = "data source =.; initial catalog = scheduljob;user id = sa; password = *****;";
//sqlserver版本(core下面已经没有什么20，21版本了)
properties["quartz.datasource.scheduljob.provider"] = "sqlserver";
//是否集群，集群模式下要设置为true
properties["quartz.jobstore.clustered"] = "true";
properties["quartz.scheduler.instancename"] = "testscheduler";
//集群模式下设置为auto，自动获取实例的id，集群下一定要id不一样，不然不会自动恢复
properties["quartz.scheduler.instanceid"] = "auto";
properties["quartz.threadpool.type"] = "quartz.simpl.simplethreadpool, quartz";
properties["quartz.threadpool.threadcount"] = "25";
properties["quartz.threadpool.threadpriority"] = "normal";
properties["quartz.jobstore.misfirethreshold"] = "60000";
properties["quartz.jobstore.useproperties"] = "false";
ischedulerfactory factory = new stdschedulerfactory(properties);
return await factory.getscheduler();
}
然后是测试代码：
public async task testjob()
{
var sched = await getscheduler();
//console.writeline("***** deleting existing jobs/triggers *****");
//sched.clear();
console.writeline("------- initialization complete -----------");
console.writeline("------- scheduling jobs ------------------");
string schedid = sched.schedulername; //sched.schedulerinstanceid;
int count = 1;
ijobdetail job = jobbuilder.create<simplerecoveryjob>()
.withidentity("job_" + count, schedid) // put triggers in group named after the cluster node instance just to distinguish (in logging) what was scheduled from where
.requestrecovery() // ask scheduler to re-execute this job if it was in progress when the scheduler went down...
.build();
isimpletrigger trigger = (isimpletrigger)triggerbuilder.create()
.withidentity("triger_" + count, schedid)
.startat(datebuilder.futuredate(1, intervalunit.second))
.withsimpleschedule(x => x.withrepeatcount(1000).withinterval(timespan.fromseconds(5)))
.build();
console.writeline("{0} will run at: {1} and repeat: {2} times, every {3} seconds", job.key, trigger.getnextfiretimeutc(), trigger.repeatcount, trigger.repeatinterval.totalseconds);
sched.schedulejob(job, trigger);
count++;
job = jobbuilder.create<simplerecoveryjob>()
.withidentity("job_" + count, schedid) // put triggers in group named after the cluster node instance just to distinguish (in logging) what was scheduled from where
.requestrecovery() // ask scheduler to re-execute this job if it was in progress when the scheduler went down...
.build();
trigger = (isimpletrigger)triggerbuilder.create()
.withidentity("triger_" + count, schedid)
.startat(datebuilder.futuredate(2, intervalunit.second))
.withsimpleschedule(x => x.withrepeatcount(1000).withinterval(timespan.fromseconds(5)))
.build();
console.writeline(string.format("{0} will run at: {1} and repeat: {2} times, every {3} seconds", job.key, trigger.getnextfiretimeutc(), trigger.repeatcount, trigger.repeatinterval.totalseconds));
sched.schedulejob(job, trigger);
// jobs don't start firing until start() has been called...
console.writeline("------- starting scheduler ---------------");
sched.start();
console.writeline("------- started scheduler ----------------");
console.writeline("------- waiting for one hour... ----------");
thread.sleep(timespan.fromhours(1));
console.writeline("------- shutting down --------------------");
sched.shutdown();
console.writeline("------- shutdown complete ----------------");
}
测试添加两个job,每隔5s执行一次。
在图中可以看到：job1和job2不会重复执行，当我停了job2时，job2也在job1当中运行。
这样就可以实现分布式部署时的问题了，quzrtz.net的数据库结构随便网上找一下，运行一些就好了。
截取几个数据库的数据图：基本上就存储了一些这样的信息
jobdetail
触发器的数据
这个是调度器的
这个是锁的
1.job的介绍：有状态job，无状态job。
2.misfire
3.trigger,cron介绍
4.第一部分的改造，自己实现一个基于在hostedservice能够进行分布式调度的job类，其实只要实现了这个，其他的上面讲的都没有问题。弃用quartz的表的行级锁。因为这并发高了比较慢！！
个人还是没有测试出来这个requestrecovery。怎么用过的！！
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