要在 Grails 中集群 Quartz 插件,您需要在项目中包含一些文件。首先,安装grails-app/conf/QuartzConfig.groovy 并确保jdbcStore 已启用。
quartz {
autoStartup = true
jdbcStore = true
waitForJobsToCompleteOnShutdown = true
}
接下来,安装与您要连接的数据库相关的 Hibernate 配置文件。例如,对于 Oracle,grails-app/conf/hibernate/hibernate.cfg.xml 的基本 Hibernate xml 配置是:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
'-//Hibernate/Hibernate Configuration DTD 3.0//EN'
'http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd'>
<hibernate-configuration>
<session-factory>
<mapping resource="Quartz.oracle.hbm.xml"/>
</session-factory>
</hibernate-configuration>
此示例的实际 Quartz-Hibernate SQL 文件将命名为Quartz.oracle.hbm.xml,并将驻留在同一目录中。这些文件应该可以在 GitHub 上的 Quartz 插件 (https://github.com/nebolsin/grails-quartz) 的 src/templates/sql 下找到。请注意,这些脚本似乎只适用于 DataSource create 和 create-drop,因此您需要在 update 上手动创建 Quartz 表,如果它们在之前的运行中不存在。
创建一个grails-app/conf/quartz/quartz.properties 文件,并根据您的业务需求进行编辑:
/* Have the scheduler id automatically generated for
* all schedulers in a cluster */
org.quartz.scheduler.instanceId = AUTO
/* Don't let Quartz "Phone Home" to see if new versions
* are available */
org.quartz.scheduler.skipUpdateCheck = true
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
/* Configure Quartz for only one thread as the only job
* should run once per day */
org.quartz.threadPool.threadCount = 4
/* Give the thread a Thread.MIN_PRIORITY level*/
org.quartz.threadPool.threadPriority = 1
/* Allow a minute (60,000 ms) of non-firing to pass before
* a trigger is called a misfire */
org.quartz.jobStore.misfireThreshold = 60000
/* Handle only 2 misfired triggers at a time */
org.quartz.jobStore.maxMisfiresToHandleAtATime = 2
/* Check in with the cluster every 5000 ms*/
org.quartz.jobStore.clusterCheckinInterval = 5000
/* Use the Oracle Quartz Driver to communicate via JDBC */
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.oracle.OracleDelegate
/* Have Quartz handle its own transactions with the database */
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
/* Define the prefix for the Quartz tables in the database*/
org.quartz.jobStore.tablePrefix = QRTZ_
/* Tell Quartz it is clustered */
org.quartz.jobStore.isClustered = true
/* Tell Quartz that properties passed to the job call are
* NOT all String objects */
org.quartz.jobStore.useProperties = false
/* Detect the jvm shutdown and call shutdown on the scheduler */
org.quartz.plugin.shutdownhook.class = org.quartz.plugins.management.ShutdownHookPlugin
org.quartz.plugin.shutdownhook.cleanShutdown = true
/* Log the history of triggers and jobs */
org.quartz.plugin.triggerHistory.class = org.quartz.plugins.history.LoggingTriggerHistoryPlugin
org.quartz.plugin.jobHistory.class = org.quartz.plugins.history.LoggingJobHistoryPlugin
注意以上属性,可以在Config.groovy的Log4j设置中设置org.quartz.plugins来记录相关作业和触发触发信息。我认为info 级别应该足够了。
编辑或创建scripts/_Events.groovy 并添加以下战争修改闭包。这修复了一个已知的 Quartz 插件错误,将正确的 quartz.properties 安装到最终的 war 文件中,而不是插件中的空白。
eventCreateWarStart = { warName, stagingDir ->
// Make sure we have the correct quartz.properties in the
// correct place in the war to enable clustering
ant.delete(dir:"${stagingDir}/WEB-INF/classes/quartz")
ant.copy(file:"${basedir}/grails-app/conf/quartz/quartz.properties",
todir:"${stagingDir}/WEB-INF/classes")
}
你应该完成了......
附:如果您使用的是 Oracle 数据库,请将以下内容添加到依赖项块中的 BuildConfig.groovy,以便您可以访问 Quartz-Oracle 通信驱动程序:
runtime("org.quartz-scheduler:quartz-oracle:1.7.2") {
// Exclude quartz as 1.7.3 is included from the plugin
excludes('quartz')
}
P.P.S 上面链接中的 sql 文件只是 SQL。要将其放入休眠文件,只需将每个单独的 SQL 命令用 Hibernate database-object 节点包围,就像这样(再次使用 Oracle 示例):
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
'-//Hibernate/Hibernate Mapping DTD 3.0//EN'
'http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd'>
<hibernate-mapping>
<database-object>
<create>
CREATE TABLE QRTZ_JOB_DETAILS (
JOB_NAME VARCHAR2(200) NOT NULL,
JOB_GROUP VARCHAR2(200) NOT NULL,
DESCRIPTION VARCHAR2(250) NULL,
JOB_CLASS_NAME VARCHAR2(250) NOT NULL,
IS_DURABLE VARCHAR2(1) NOT NULL,
IS_VOLATILE VARCHAR2(1) NOT NULL,
IS_STATEFUL VARCHAR2(1) NOT NULL,
REQUESTS_RECOVERY VARCHAR2(1) NOT NULL,
JOB_DATA BLOB NULL,
PRIMARY KEY (JOB_NAME,JOB_GROUP)
)
</create>
<drop>DROP TABLE QRTZ_JOB_DETAILS</drop>
<dialect-scope name='org.hibernate.SomeOracleDialect' />
</database-object>
...
<database-object>
<create>INSERT INTO QRTZ_LOCKS VALUES('TRIGGER_ACCESS')</create>
<drop></drop>
<dialect-scope name='org.hibernate.SomeOracleDialect' />
</database-object>
...
</hibernate-mapping>
dialect-scope 告诉 Hibernate 应该使用哪些数据库方言创建和删除节点。您可以尝试不使用它,看看它是否有效,否则您可能需要添加 Grails DataSource 使用的 MySql 方言。