@PostConstruct
public void init() {
logger.info("Initializing NEMA Flow Service...");
notificationCreator = new JobStatusNotificationCreator(daoFactory);
try {
headServer =
meandreServerProxyFactory.getServerProxyInstance(flowServiceConfig.getHeadConfig(), true);
} catch (MeandreServerException e) {
throw new RuntimeException("Could not instantiate head server.", e);
}
flowServiceConfig.addChangeListener(this);
// Any jobs marked as scheduled in the database will be put back in the
// queue for execution.
JobDao jobDao = daoFactory.getJobDao();
List<Job> scheduledJobs;
try {
Session session = jobDao.getSessionFactory().openSession();
jobDao.startManagedSession(session);
scheduledJobs = jobDao.getJobsByStatus(Job.JobStatus.SCHEDULED);
jobDao.endManagedSession();
session.close();
} catch (HibernateException e) {
throw new RuntimeException("Problem searching for scheduled jobs" + " in the database.", e);
}
if (scheduledJobs != null && scheduledJobs.size() > 0) {
logger.info(
scheduledJobs.size()
+ " scheduled jobs found in the "
+ "database. Jobs will be rescheduled for execution.");
}
for (Job job : scheduledJobs) {
jobScheduler.scheduleJob(job);
jobStatusMonitor.start(job, notificationCreator);
}
}
/** @see ConfigChangeListener#configChanged() */
@Override
public void configChanged() {
logger.info("Received configuration change notification.");
if (!headServer.getConfig().equals(flowServiceConfig.getHeadConfig())) {
MeandreServerProxy newHead;
try {
newHead =
meandreServerProxyFactory.getServerProxyInstance(
flowServiceConfig.getHeadConfig(), true);
} catch (MeandreServerException e) {
throw new RuntimeException("Could not instantiate head server.", e);
}
meandreServerProxyFactory.release(headServer);
headServer = newHead;
logger.info(
"Head server configuration has changed. New head "
+ "server is "
+ headServer.toString());
} else {
logger.info("Head server has not changed.");
}
jobScheduler.setWorkerConfigs(flowServiceConfig.getWorkerConfigs());
}
/** @see FlowService#getWorkerConfigs() */
@Override
public Set<MeandreServerProxyConfig> getWorkerConfigs() {
return flowServiceConfig.getWorkerConfigs();
}