jakarta-ee - 使用 Quartz 获取集群中所有当前正在执行的作业的列表

Question

quartz 中的 Scheduler.getCurrentlyExecutingJobs() 方法显然不是集群感知的。人们使用什么方法来获取所有正在执行的作业的列表？

Answer 1

看起来检修调度机制不会很快发生。

所以，这是我直接检查表格的方式 - 如果需要，请添加组支持:

class QuartzClusterJobStatusService
{
    def quartzScheduler

    boolean isJobRunning(String job) {
        return isJobRunningHere(job) || isJobRunningElsewhere(job)
    }

    boolean isJobRunningHere(String job) {
        for (JobExecutionContext j : quartzScheduler.getCurrentlyExecutingJobs()) {
            if (new JobKey(job,"GRAILS_JOBS").equals(j.jobDetail.key)) {
                return true
            }
        }
        return false
    }

    boolean isJobRunningElsewhere(String job) {
        JobStoreSupport js = quartzScheduler.sched.resources.jobStore
        if (!js.isClustered()) {
            return false
        }
        Connection conn = DBConnectionManager.getInstance().getConnection(js.getDataSource());
        PreparedStatement stmt = null
        try {
            stmt = conn.prepareStatement("SELECT 1 FROM " + js.getTablePrefix() + "FIRED_TRIGGERS where JOB_NAME = ?")
            stmt.setString(1, job)
            ResultSet rs = stmt.executeQuery()
            return rs.next()
        } finally {
            if (stmt != null)
                stmt.close()
        }
    }
}