@Override
public void start(final IJobUpdate update, final AuditData auditData)
throws UpdateStateException {
requireNonNull(update);
requireNonNull(auditData);
storage.write(
(NoResult<UpdateStateException>)
storeProvider -> {
IJobUpdateSummary summary = update.getSummary();
IJobUpdateInstructions instructions = update.getInstructions();
IJobKey job = summary.getKey().getJob();
// Validate the update configuration by making sure we can create an updater for it.
updateFactory.newUpdate(update.getInstructions(), true);
if (instructions.getInitialState().isEmpty() && !instructions.isSetDesiredState()) {
throw new IllegalArgumentException("Update instruction is a no-op.");
}
List<IJobUpdateSummary> activeJobUpdates =
storeProvider.getJobUpdateStore().fetchJobUpdateSummaries(queryActiveByJob(job));
if (!activeJobUpdates.isEmpty()) {
throw new UpdateStateException(
"An active update already exists for this job, "
+ "please terminate it before starting another. "
+ "Active updates are those in states "
+ Updates.ACTIVE_JOB_UPDATE_STATES);
}
LOG.info("Starting update for job " + job);
ILock lock;
try {
lock =
lockManager.acquireLock(
ILockKey.build(LockKey.job(job.newBuilder())), auditData.getUser());
} catch (LockException e) {
throw new UpdateStateException(e.getMessage(), e);
}
storeProvider
.getJobUpdateStore()
.saveJobUpdate(update, Optional.of(requireNonNull(lock.getToken())));
JobUpdateStatus status = ROLLING_FORWARD;
if (isCoordinatedUpdate(instructions)) {
status = ROLL_FORWARD_AWAITING_PULSE;
pulseHandler.initializePulseState(update, status);
}
recordAndChangeJobUpdateStatus(
storeProvider, summary.getKey(), addAuditData(newEvent(status), auditData));
});
}
private static JobUpdateEvent addAuditData(JobUpdateEvent event, AuditData auditData) {
return event.setMessage(auditData.getMessage().orNull()).setUser(auditData.getUser());
}