public static void persistTopology(Topology topology) {
try {
RegistryManager.getInstance().persistTopology(topology);
} catch (RegistryException e) {
String msg = "Failed to persist the Topology in registry. ";
log.fatal(msg, e);
}
}
public static Topology retrieveTopology() {
Object obj = RegistryManager.getInstance().retrieveTopology();
if (obj != null) {
try {
Object dataObj = Deserializer.deserializeFromByteArray((byte[]) obj);
if (dataObj instanceof Topology) {
return (Topology) dataObj;
} else {
return null;
}
} catch (Exception e) {
String msg =
"Unable to retrieve data from Registry. Hence, any historical data will not get reflected.";
log.warn(msg, e);
}
}
return null;
}