Quartz 中集群工作原理
一个 Quartz 集群中的每个节点是一个独立的 Quartz 应用，它又管理着其他的节点。意思是你必须对每个节点分别启动或停止。不像许多应用服务器的集群，独立的 Quartz 节点并不与另一其的节点或是管理节点通信。Quartz 应用是通过数据库表来感知到另一应用的。离开了db将无法感知。
建表语句
quartz使用了数据库锁保证定时任务只有在一台机器上触发。在quartz的集群解决方案里有张表scheduler_locks，quartz采用了悲观锁的方式对triggers表进行行加锁，以保证任务同步的正确性,所以我们需要导入quartz持久化所需的一些表：
可有去官网查找quartz版本对应数据库建表语句：quartz官网
本文使用的是建表语句（springboot2.1.0对应的是quartz2.3.0）
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for QRTZ_BLOB_TRIGGERS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_BLOB_TRIGGERS`;
CREATE TABLE `QRTZ_BLOB_TRIGGERS` (
`SCHED_NAME` varchar(120) NOT NULL,
`TRIGGER_NAME` varchar(200) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
`BLOB_DATA` blob,
PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
KEY `SCHED_NAME` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
CONSTRAINT `qrtz_blob_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `QRTZ_TRIGGERS` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_CALENDARS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_CALENDARS`;
CREATE TABLE `QRTZ_CALENDARS` (
`SCHED_NAME` varchar(120) NOT NULL,
`CALENDAR_NAME` varchar(200) NOT NULL,
`CALENDAR` blob NOT NULL,
PRIMARY KEY (`SCHED_NAME`,`CALENDAR_NAME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_CRON_TRIGGERS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_CRON_TRIGGERS`;
CREATE TABLE `QRTZ_CRON_TRIGGERS` (
`SCHED_NAME` varchar(120) NOT NULL,
`TRIGGER_NAME` varchar(200) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
`CRON_EXPRESSION` varchar(120) NOT NULL,
`TIME_ZONE_ID` varchar(80) DEFAULT NULL,
PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
CONSTRAINT `qrtz_cron_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `QRTZ_TRIGGERS` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_FIRED_TRIGGERS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_FIRED_TRIGGERS`;
CREATE TABLE `QRTZ_FIRED_TRIGGERS` (
`SCHED_NAME` varchar(120) NOT NULL,
`ENTRY_ID` varchar(95) NOT NULL,
`TRIGGER_NAME` varchar(200) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
`INSTANCE_NAME` varchar(200) NOT NULL,
`FIRED_TIME` bigint(13) NOT NULL,
`SCHED_TIME` bigint(13) NOT NULL,
`PRIORITY` int(11) NOT NULL,
`STATE` varchar(16) NOT NULL,
`JOB_NAME` varchar(200) DEFAULT NULL,
`JOB_GROUP` varchar(200) DEFAULT NULL,
`IS_NONCONCURRENT` varchar(1) DEFAULT NULL,
`REQUESTS_RECOVERY` varchar(1) DEFAULT NULL,
PRIMARY KEY (`SCHED_NAME`,`ENTRY_ID`),
KEY `IDX_QRTZ_FT_TRIG_INST_NAME` (`SCHED_NAME`,`INSTANCE_NAME`),
KEY `IDX_QRTZ_FT_INST_JOB_REQ_RCVRY` (`SCHED_NAME`,`INSTANCE_NAME`,`REQUESTS_RECOVERY`),
KEY `IDX_QRTZ_FT_J_G` (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
KEY `IDX_QRTZ_FT_JG` (`SCHED_NAME`,`JOB_GROUP`),
KEY `IDX_QRTZ_FT_T_G` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
KEY `IDX_QRTZ_FT_TG` (`SCHED_NAME`,`TRIGGER_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_JOB_DETAILS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_JOB_DETAILS`;
CREATE TABLE `QRTZ_JOB_DETAILS` (
`SCHED_NAME` varchar(120) NOT NULL,
`JOB_NAME` varchar(200) NOT NULL,
`JOB_GROUP` varchar(200) NOT NULL,
`DESCRIPTION` varchar(250) DEFAULT NULL,
`JOB_CLASS_NAME` varchar(250) NOT NULL,
`IS_DURABLE` varchar(1) NOT NULL,
`IS_NONCONCURRENT` varchar(1) NOT NULL,
`IS_UPDATE_DATA` varchar(1) NOT NULL,
`REQUESTS_RECOVERY` varchar(1) NOT NULL,
`JOB_DATA` blob,
PRIMARY KEY (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
KEY `IDX_QRTZ_J_REQ_RECOVERY` (`SCHED_NAME`,`REQUESTS_RECOVERY`),
KEY `IDX_QRTZ_J_GRP` (`SCHED_NAME`,`JOB_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_LOCKS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_LOCKS`;
CREATE TABLE `QRTZ_LOCKS` (
`SCHED_NAME` varchar(120) NOT NULL,
`LOCK_NAME` varchar(40) NOT NULL,
PRIMARY KEY (`SCHED_NAME`,`LOCK_NAME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_PAUSED_TRIGGER_GRPS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_PAUSED_TRIGGER_GRPS`;
CREATE TABLE `QRTZ_PAUSED_TRIGGER_GRPS` (
`SCHED_NAME` varchar(120) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
PRIMARY KEY (`SCHED_NAME`,`TRIGGER_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_SCHEDULER_STATE
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_SCHEDULER_STATE`;
CREATE TABLE `QRTZ_SCHEDULER_STATE` (
`SCHED_NAME` varchar(120) NOT NULL,
`INSTANCE_NAME` varchar(200) NOT NULL,
`LAST_CHECKIN_TIME` bigint(13) NOT NULL,
`CHECKIN_INTERVAL` bigint(13) NOT NULL,
PRIMARY KEY (`SCHED_NAME`,`INSTANCE_NAME`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_SIMPLE_TRIGGERS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_SIMPLE_TRIGGERS`;
CREATE TABLE `QRTZ_SIMPLE_TRIGGERS` (
`SCHED_NAME` varchar(120) NOT NULL,
`TRIGGER_NAME` varchar(200) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
`REPEAT_COUNT` bigint(7) NOT NULL,
`REPEAT_INTERVAL` bigint(12) NOT NULL,
`TIMES_TRIGGERED` bigint(10) NOT NULL,
PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
CONSTRAINT `qrtz_simple_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `QRTZ_TRIGGERS` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_SIMPROP_TRIGGERS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_SIMPROP_TRIGGERS`;
CREATE TABLE `QRTZ_SIMPROP_TRIGGERS` (
`SCHED_NAME` varchar(120) NOT NULL,
`TRIGGER_NAME` varchar(200) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
`STR_PROP_1` varchar(512) DEFAULT NULL,
`STR_PROP_2` varchar(512) DEFAULT NULL,
`STR_PROP_3` varchar(512) DEFAULT NULL,
`INT_PROP_1` int(11) DEFAULT NULL,
`INT_PROP_2` int(11) DEFAULT NULL,
`LONG_PROP_1` bigint(20) DEFAULT NULL,
`LONG_PROP_2` bigint(20) DEFAULT NULL,
`DEC_PROP_1` decimal(13,4) DEFAULT NULL,
`DEC_PROP_2` decimal(13,4) DEFAULT NULL,
`BOOL_PROP_1` varchar(1) DEFAULT NULL,
`BOOL_PROP_2` varchar(1) DEFAULT NULL,
PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
CONSTRAINT `qrtz_simprop_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `QRTZ_TRIGGERS` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for QRTZ_TRIGGERS
-- ----------------------------
DROP TABLE IF EXISTS `QRTZ_TRIGGERS`;
CREATE TABLE `QRTZ_TRIGGERS` (
`SCHED_NAME` varchar(120) NOT NULL,
`TRIGGER_NAME` varchar(200) NOT NULL,
`TRIGGER_GROUP` varchar(200) NOT NULL,
`JOB_NAME` varchar(200) NOT NULL,
`JOB_GROUP` varchar(200) NOT NULL,
`DESCRIPTION` varchar(250) DEFAULT NULL,
`NEXT_FIRE_TIME` bigint(13) DEFAULT NULL,
`PREV_FIRE_TIME` bigint(13) DEFAULT NULL,
`PRIORITY` int(11) DEFAULT NULL,
`TRIGGER_STATE` varchar(16) NOT NULL,
`TRIGGER_TYPE` varchar(8) NOT NULL,
`START_TIME` bigint(13) NOT NULL,
`END_TIME` bigint(13) DEFAULT NULL,
`CALENDAR_NAME` varchar(200) DEFAULT NULL,
`MISFIRE_INSTR` smallint(2) DEFAULT NULL,
`JOB_DATA` blob,
PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
KEY `IDX_QRTZ_T_J` (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
KEY `IDX_QRTZ_T_JG` (`SCHED_NAME`,`JOB_GROUP`),
KEY `IDX_QRTZ_T_C` (`SCHED_NAME`,`CALENDAR_NAME`),
KEY `IDX_QRTZ_T_G` (`SCHED_NAME`,`TRIGGER_GROUP`),
KEY `IDX_QRTZ_T_STATE` (`SCHED_NAME`,`TRIGGER_STATE`),
KEY `IDX_QRTZ_T_N_STATE` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
KEY `IDX_QRTZ_T_N_G_STATE` (`SCHED_NAME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
KEY `IDX_QRTZ_T_NEXT_FIRE_TIME` (`SCHED_NAME`,`NEXT_FIRE_TIME`),
KEY `IDX_QRTZ_T_NFT_ST` (`SCHED_NAME`,`TRIGGER_STATE`,`NEXT_FIRE_TIME`),
KEY `IDX_QRTZ_T_NFT_MISFIRE` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`),
KEY `IDX_QRTZ_T_NFT_ST_MISFIRE` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`,`TRIGGER_STATE`),
KEY `IDX_QRTZ_T_NFT_ST_MISFIRE_GRP` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
CONSTRAINT `qrtz_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `JOB_NAME`, `JOB_GROUP`) REFERENCES `QRTZ_JOB_DETAILS` (`SCHED_NAME`, `JOB_NAME`, `JOB_GROUP`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
pom依赖
<!-- 集群定时任务-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-quartz</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
application.yml
spring:
#分布式定时任务相关属性配置
quartz:
properties:
org:
quartz:
scheduler:
instanceName: clusteredScheduler
instanceId: AUTO
jobStore:
class: org.quartz.impl.jdbcjobstore.JobStoreTX
driverDelegateClass: org.quartz.impl.jdbcjobstore.StdJDBCDelegate
tablePrefix: QRTZ_
isClustered: true
clusterCheckinInterval: 10000
useProperties: false
threadPool:
class: org.quartz.simpl.SimpleThreadPool
threadCount: 10
threadPriority: 5
threadsInheritContextClassLoaderOfInitializingThread: true
#数据库方式
job-store-type: jdbc
#初始化表结构
jdbc:
initialize-schema: always
#数据库配置 根据实际修改ip 库 用户名 密码等
datasource:
url: jdbc:mysql://10.139.12.111:3306/quick?useSSL=false&useUnicode=true&&characterEncoding=utf-8
username: root
password: xxxxx
编写定时任务
定时任务需要实现job接口,但是quartz已经有了一个简单的抽象实现,简化了代码量.只需要直接继承即可.
定时任务1
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.stereotype.Component;
import java.util.Date;
@Component
public class SimpleJob extends QuartzJobBean {
@Override
protected void executeInternal(JobExecutionContext jobExecutionContext) throws JobExecutionException {
String taskName = context.getJobDetail().getJobDataMap().getString("name");
System.out.println("taskName :"+taskName )
System.out.println("=========SimpleJob中的executeInternal方法执行了===="+new Date());
}
}
定时任务2
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.stereotype.Component;
import java.util.Date;
@Component
public class SimpleJobTwo extends QuartzJobBean {
@Override
protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
String taskName = context.getJobDetail().getJobDataMap().getString("name");
System.out.println("taskName :"+taskName )
System.out.println("-----------------SimpleJobTwo的任务执行了------"+new Date());
}
}
定时任务配置类
@Configuration
public class TaskConfig {
//配置定时任务1
@Bean
public JobDetailFactoryBean job1() {
JobDetailFactoryBean jobDetail = new JobDetailFactoryBean();
//配置任务的具体实现
jobDetail.setJobClass(SimpleJob.class);
//是否持久化
jobDetail.setDurability(true);
//出现异常是否重新执行
jobDetail.setRequestsRecovery(true);
//配置定时任务信息
jobDetail.setName("job1111------");
jobDetail.setGroup("quartzTest--------");
jobDetail.setDescription("这是job1111");
return jobDetail;
}
//配置定时任务2
@Bean
public JobDetailFactoryBean job2() {
JobDetailFactoryBean jobDetail = new JobDetailFactoryBean();
jobDetail.setJobClass(SimpleJobTwo.class);
jobDetail.setDurability(true);
jobDetail.setRequestsRecovery(true);
jobDetail.setName("job22222------");
jobDetail.setGroup("quartzTest--------");
jobDetail.setDescription("这是job2222");
return jobDetail;
}
//配置任务定时规则1
@Bean
public CronTriggerFactoryBean trigger1() {
CronTriggerFactoryBean cronTrigger = new CronTriggerFactoryBean();
//定时规则的分组
cronTrigger.setGroup("TriggerTest11111");
cronTrigger.setName("trigger1");
//配置执行的任务jobdetail
cronTrigger.setJobDetail(job1().getObject());
//配置执行规则 每5秒执行一次
cronTrigger.setCronExpression("0/5 * * * * ?");
return cronTrigger;
}
//配置任务定时规则2
@Bean
public CronTriggerFactoryBean trigger2() {
CronTriggerFactoryBean cronTrigger = new CronTriggerFactoryBean();
cronTrigger.setGroup("TriggerTest2222");
cronTrigger.setName("trigger2");
cronTrigger.setJobDetail(job2().getObject());
cronTrigger.setCronExpression("0/8 * * * * ?");
return cronTrigger;
}
}
直接运行即可
再拷贝一份项目用IDEA打开，运行，可以看到两运行的项目会间隔执行任务，可以单独一个执行任务，主要看谁能获取数据锁谁就可以执行。如果一直是单独一个执行，停掉正在打印的即可看到下一次打印执行的就是另一个。
参考：
SpringBoot2.1.0整合Quartz实现分布式集群定时任务