private ActiveJob getActiveJob(Long activeJobId) {
String activeJobKey = cacheKeyForActiveJob(activeJobId);
ActiveJob activeJob = (ActiveJob) goCache.get(activeJobKey);
if (activeJob == null) {
synchronized (activeJobKey) {
activeJob = (ActiveJob) goCache.get(activeJobKey);
if (activeJob == null) {
activeJob = _getActiveJob(activeJobId);
if (activeJob
!= null) { // could have changed to not active and consquently no match found
cacheActiveJob(activeJob);
}
}
}
}
return activeJob; // TODO: clone it, caller may mutate
}
