@Override
protected void startUp() throws Exception {
LOG.info("Starting {} periodicals ...", periodicalSet.size());
for (Periodical periodical : periodicalSet) {
try {
periodical.initialize();
if (periodical.masterOnly()
&& !serverStatus.hasCapability(ServerStatus.Capability.MASTER)) {
LOG.info(
"Not starting [{}] periodical. Only started on graylog2-server master nodes.",
periodical.getClass().getCanonicalName());
continue;
}
if (!periodical.startOnThisNode()) {
LOG.info(
"Not starting [{}] periodical. Not configured to run on this node.",
periodical.getClass().getCanonicalName());
continue;
}
// Register and start.
periodicals.registerAndStart(periodical);
} catch (Exception e) {
LOG.error("Could not initialize periodical.", e);
}
}
}
@Override
protected void shutDown() throws Exception {
for (Periodical periodical : periodicals.getAllStoppedOnGracefulShutdown()) {
LOG.info("Shutting down periodical [{}].", periodical.getClass().getCanonicalName());
Stopwatch s = Stopwatch.createStarted();
// Cancel future executions.
Map<Periodical, ScheduledFuture> futures = periodicals.getFutures();
if (futures.containsKey(periodical)) {
futures.get(periodical).cancel(false);
s.stop();
LOG.info(
"Shutdown of periodical [{}] complete, took <{}ms>.",
periodical.getClass().getCanonicalName(),
s.elapsed(TimeUnit.MILLISECONDS));
} else {
LOG.error(
"Could not find periodical [{}] in futures list. Not stopping execution.",
periodical.getClass().getCanonicalName());
}
}
}