private HostPort fetcheLeaderInfoFromZk() {
try {
Participant leader = m_leaderLatch.getLeader();
return JSON.parseObject(leader.getId(), HostPort.class);
} catch (Exception e) {
log.error("Failed to fetch leader info from zk.", e);
}
return null;
}
public String getCurrentLeader() {
try {
final LeaderLatch latch = leaderLatch.get();
if (latch == null) {
return null;
}
Participant participant = latch.getLeader();
if (participant.isLeader()) {
return participant.getId();
}
return null;
} catch (Exception e) {
throw Throwables.propagate(e);
}
}
@Override
public void run() {
try {
synchronized (lock) {
final LeaderLatch latch = leaderLatch.get();
if (latch == null || !latch.hasLeadership()) {
log.info(
"LEGGO MY EGGO. [%s] is leader.", latch == null ? null : latch.getLeader().getId());
stopBeingLeader();
return;
}
}
List<Boolean> allStarted =
Arrays.asList(databaseSegmentManager.isStarted(), serverInventoryView.isStarted());
for (Boolean aBoolean : allStarted) {
if (!aBoolean) {
log.error("InventoryManagers not started[%s]", allStarted);
stopBeingLeader();
return;
}
}
// Do coordinator stuff.
DruidCoordinatorRuntimeParams params =
DruidCoordinatorRuntimeParams.newBuilder()
.withStartTime(startTime)
.withDatasources(databaseSegmentManager.getInventory())
.withDynamicConfigs(dynamicConfigs.get())
.withEmitter(emitter)
.build();
for (DruidCoordinatorHelper helper : helpers) {
params = helper.run(params);
}
} catch (Exception e) {
log.makeAlert(e, "Caught exception, ignoring so that schedule keeps going.").emit();
}
}
