@Override
protected LookupRequest createLookupRequest(Contact node) {
Collection<KUID> noKeys = Collections.emptySet();
return context
.getMessageHelper()
.createFindValueRequest(
node.getContactAddress(), lookupId, noKeys, lookupKey.getDHTValueType());
}
private boolean extractDataFromResponse(FindValueResponse response) {
Contact sender = response.getContact();
Collection<KUID> availableSecondaryKeys = response.getSecondaryKeys();
Collection<? extends DHTValueEntity> entities = response.getDHTValueEntities();
// No keys and no values? In other words the remote Node sent us
// a FindValueResponse even though it doesn't have a value for
// the given KUID!? Continue with the lookup if so...!
if (availableSecondaryKeys.isEmpty() && entities.isEmpty()) {
if (LOG.isWarnEnabled()) {
LOG.warn(sender + " returned neither keys nor values for " + lookupId);
}
// Continue with the lookup...
return false;
}
Collection<? extends DHTValueEntity> filtered =
DatabaseUtils.filter(lookupKey.getDHTValueType(), entities);
// The filtered Set is empty and the unfiltered isn't?
// The remote Node send us unrequested Value(s)!
// Continue with the lookup if so...!
if (filtered.isEmpty() && !entities.isEmpty()) {
if (LOG.isWarnEnabled()) {
LOG.warn(sender + " returned unrequested types of values for " + lookupId);
}
// Continue with the lookup...
return false;
}
this.entities.addAll(filtered);
for (KUID secondaryKey : availableSecondaryKeys) {
EntityKey key =
EntityKey.createEntityKey(sender, lookupId, secondaryKey, lookupKey.getDHTValueType());
this.entityKeys.add(key);
}
return true;
}
