私はこのようなテストクォーツの仕事をしています。
package com.example.spring.quartz.basic;
import org.quartz.Job;
import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
public class ExampleJob implements Job
{
@Override
public void execute(JobExecutionContext context) throws JobExecutionException
{
JobDataMap map = context.getMergedJobDataMap();
String timeout = (String)map.get("timeout");
System.out.println("ExampleJob.execute() " + timeout);
}
}
このジョブは永続的であるため、データベースに書き込まれます。Quartz は完全修飾ジョブ クラス名com.example.spring.quartz.basic.ExampleJobをデータベースに書き込むようです。
したがって、リファクタリングの名前ExampleJobをExampleJob2に変更すると、Quartz が ExampleJob を探してクラスが見つからないという例外を取得するため、以下の例外が発生します。
質問: 既存のジョブ定義を壊すことなく安全にジョブ クラスの名前を変更できるようにするためのトリックやパターンはありますか?
Exception in thread "main" org.springframework.context.ApplicationContextException: Failed to start bean 'quartzScheduler'; nested exception is org.springframework.scheduling.SchedulingException: Could not start Quartz Scheduler; nested exception is org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Couldn't retrieve trigger: com.example.spring.quartz.basic.ExampleJob [See nested exception: java.lang.ClassNotFoundException: com.example.spring.quartz.basic.ExampleJob]]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:170)
at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:339)
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:143)
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:108)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:945)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.example.spring.quartz.transactional.QuartzExampleJobMain.main(QuartzExampleJobMain.java:16)
Caused by: org.springframework.scheduling.SchedulingException: Could not start Quartz Scheduler; nested exception is org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Couldn't retrieve trigger: com.example.spring.quartz.basic.ExampleJob [See nested exception: java.lang.ClassNotFoundException: com.example.spring.quartz.basic.ExampleJob]]
at org.springframework.scheduling.quartz.SchedulerFactoryBean.start(SchedulerFactoryBean.java:715)
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:167)
... 9 more
Caused by: org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Couldn't retrieve trigger: com.example.spring.quartz.basic.ExampleJob [See nested exception: java.lang.ClassNotFoundException: com.example.spring.quartz.basic.ExampleJob]]
at org.quartz.impl.jdbcjobstore.JobStoreSupport.schedulerStarted(JobStoreSupport.java:683)
at org.quartz.core.QuartzScheduler.start(QuartzScheduler.java:526)
at org.quartz.impl.StdScheduler.start(StdScheduler.java:143)
at org.springframework.scheduling.quartz.SchedulerFactoryBean.startScheduler(SchedulerFactoryBean.java:649)
at org.springframework.scheduling.quartz.SchedulerFactoryBean.start(SchedulerFactoryBean.java:712)
... 10 more
Caused by: org.quartz.JobPersistenceException: Couldn't retrieve trigger: com.example.spring.quartz.basic.ExampleJob [See nested exception: java.lang.ClassNotFoundException: com.example.spring.quartz.basic.ExampleJob]
at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1524)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverMisfiredJobs(JobStoreSupport.java:968)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverJobs(JobStoreSupport.java:855)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$1.execute(JobStoreSupport.java:827)
at org.quartz.impl.jdbcjobstore.JobStoreSupport$46.execute(JobStoreSupport.java:3764)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3798)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3760)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.recoverJobs(JobStoreSupport.java:823)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.schedulerStarted(JobStoreSupport.java:681)
... 14 more
Caused by: java.lang.ClassNotFoundException: com.example.spring.quartz.basic.ExampleJob
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:623)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1610)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1481)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1331)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1989)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1913)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1796)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1155)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1891)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1796)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1989)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1913)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1796)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at org.quartz.impl.jdbcjobstore.PostgreSQLDelegate.getObjectFromBlob(PostgreSQLDelegate.java:103)
at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.selectTrigger(StdJDBCDelegate.java:1764)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.retrieveTrigger(JobStoreSupport.java:1520)
... 22 more