@Override
public void notify(ChangeSet changeSet) {
if (changeSet == null) {
return; // do nothing
}
if (!isOpen.get()) {
// The channel is not open ...
return;
}
if (!multipleAddressesInCluster.get()) {
// We are in clustered mode, but there is only one participant in the cluster (us).
// So short-circuit the cluster and just notify the local observers ...
if (hasObservers()) {
delegate.notify(changeSet);
logReceivedOperation(changeSet);
}
return;
}
// There are multiple participants in the cluster, so send all changes out to JGroups,
// letting JGroups do the ordering of messages...
try {
logSendOperation(changeSet);
byte[] data = serialize(changeSet);
Message message = new Message(null, null, data);
channel.send(message);
} catch (IllegalStateException e) {
LOGGER.warn(
BusI18n.unableToNotifyChanges,
clusteringConfiguration.getClusterName(),
changeSet.size(),
changeSet.getWorkspaceName(),
changeSet.getUserId(),
changeSet.getProcessKey(),
changeSet.getTimestamp());
} catch (Exception e) {
// Something went wrong here (this should not happen) ...
String msg =
BusI18n.errorSerializingChanges.text(
clusteringConfiguration.getClusterName(),
changeSet.size(),
changeSet.getWorkspaceName(),
changeSet.getUserId(),
changeSet.getProcessKey(),
changeSet.getTimestamp(),
changeSet);
throw new SystemFailureException(msg, e);
}
}
protected final void logReceivedOperation(ChangeSet changeSet) {
if (LOGGER.isTraceEnabled()) {
LOGGER.trace(
"Received on cluster '{0}' {1} changes on workspace {2} made by {3} from process '{4}' at {5}",
clusteringConfiguration.getClusterName(),
changeSet.size(),
changeSet.getWorkspaceName(),
changeSet.getUserId(),
changeSet.getProcessKey(),
changeSet.getTimestamp());
}
}