public static Boolean isVolatile() {
if (!Bootstrap.isFinished() || BootstrapArgs.isInitializeSystem()) {
return false;
} else if (!Hosts.isCoordinator() && BootstrapArgs.isCloudController()) {
return !isSynchronized() || !activeHosts.get().containsAll(hostDatabases.get());
} else if (!activeHosts.get().equals(hostDatabases.get())) {
return true;
} else {
return !Hosts.list(FILTER_SYNCING_DBS).isEmpty();
}
}
@Override
public Set<String> get() {
Set<String> hosts = DBHOSTS.get();
Set<String> union = Sets.newHashSet();
Set<String> intersection = Sets.newHashSet(hosts);
Logs.extreme().debug("ActiveHostSet: universe of db hosts: " + hosts);
for (String ctx : PersistenceContexts.list()) {
try {
Set<String> activeDatabases = Databases.lookup(ctx, 0).getactiveDatabases();
if (BootstrapArgs.isCloudController()) {
activeDatabases.add(
Internets
.localHostIdentifier()); // GRZE: use Internets.localHostIdentifier() which is
// static, rather than the Hosts reference as it is
// stateful
}
union.addAll(activeDatabases);
intersection.retainAll(activeDatabases);
} catch (Exception ex) {
}
}
Logs.extreme().debug("ActiveHostSet: union of activated db connections: " + union);
Logs.extreme()
.debug(
"ActiveHostSet: intersection of db hosts and activated db connections: "
+ intersection);
boolean dbVolatile = !hosts.equals(intersection);
String msg =
String.format(
"ActiveHostSet: %-14.14s %s%s%s",
dbVolatile ? "volatile" : "synchronized",
hosts,
dbVolatile ? "!=" : "=",
intersection);
if (dbVolatile) {
if (last.compareAndSet(false, dbVolatile)) {
LOG.warn(msg);
} else {
LOG.debug(msg);
}
} else {
if (last.compareAndSet(true, dbVolatile)) {
LOG.warn(msg);
} else {
Logs.extreme().info(msg);
}
}
return intersection;
}