public DistStageAck executeOnSlave() {
DefaultDistStageAck ack = newDefaultStageAck();
if (partitions == null) {
ack.setError(true);
ack.setErrorMessage("No partitions configured!");
return ack;
}
int myPartitionIndex = -1;
for (int i = 0; i < partitions.size(); ++i) {
if (partitions.get(i).contains(getSlaveIndex())) {
myPartitionIndex = i;
break;
}
}
if (myPartitionIndex < 0) {
ack.setError(true);
ack.setErrorMessage("Slave " + getSlaveIndex() + " is not contained in any partition!");
return ack;
}
try {
CacheWrapper cacheWrapper = slaveState.getCacheWrapper();
if (cacheWrapper == null) {
log.info("Cache wrapper not running, ignoring request to partition");
return ack;
}
if (cacheWrapper instanceof Partitionable) {
((Partitionable) cacheWrapper)
.setMembersInPartition(getSlaveIndex(), partitions.get(myPartitionIndex));
} else {
String message =
"Cache wrapper " + cacheWrapper.getClass() + "does not allow to split partitions";
ack.setError(true);
ack.setErrorMessage(message);
log.error(message);
}
} catch (Exception e) {
ack.setError(true);
ack.setErrorMessage(e.getMessage());
log.error(e);
}
return ack;
}