List<Rule> rules = ruleManager.getRulesWithDefault(Iterables.getFirst(query.getDataSource().getNames(), null));
// find the rule that can apply to the entire set of intervals
DateTime now = new DateTime();
int lastRulePosition = -1;
LoadRule baseRule = null;
for (Interval interval : query.getIntervals()) {
int currRulePosition = 0;
for (Rule rule : rules) {
if (rule instanceof LoadRule && currRulePosition > lastRulePosition && rule.appliesTo(interval, now)) {
lastRulePosition = currRulePosition;
baseRule = (LoadRule) rule;
break;
}
currRulePosition++;
}
}
if (baseRule == null) {
return getDefaultLookup();
}
// in the baseRule, find the broker of highest priority
for (Map.Entry<String, String> entry : tierConfig.getTierToBrokerMap().entrySet()) {
if (baseRule.getTieredReplicants().containsKey(entry.getKey())) {
brokerServiceName = entry.getValue();
break;
}
}
}