/**
* Write the updated client pointer
*
* @param queueId
* @param consumerId
* @param lastReturnedId This is a null safe parameter. If it's null, this won't be written since
* it means we didn't read any messages
*/
protected void writeClientPointer(UUID queueId, UUID consumerId, UUID lastReturnedId) {
// nothing to do
if (lastReturnedId == null) {
return;
}
// we want to set the timestamp to the value from the time uuid. If this is
// not the max time uuid to ever be written
// for this consumer, we want this to be discarded to avoid internode race
// conditions with clock drift.
long colTimestamp = UUIDUtils.getTimestampInMicros(lastReturnedId);
Mutator<UUID> mutator = createMutator(ko, ue);
if (logger.isDebugEnabled()) {
logger.debug(
"Writing last client id pointer of '{}' for queue '{}' and consumer '{}' with timestamp '{}",
new Object[] {lastReturnedId, queueId, consumerId, colTimestamp});
}
mutator.addInsertion(
consumerId,
CONSUMERS.getColumnFamily(),
createColumn(queueId, lastReturnedId, colTimestamp, ue, ue));
mutator.execute();
}
