/**
* This method depends on addLiveContactInfo(...) and does two things. It either forwards or
* removes a DHTValue it from the local Database. For details see Kademlia spec!
*/
private void forwardOrRemoveValues(Contact node, Contact existing, DHTMessage message) {
List<DHTValueEntity> valuesToForward = new ArrayList<DHTValueEntity>();
Database database = context.getDatabase();
synchronized (database) {
for (KUID primaryKey : database.keySet()) {
Operation op = getOperation(node, existing, primaryKey);
if (LOG.isDebugEnabled())
LOG.debug("node: " + node + "existing: " + existing + "operation: " + op);
if (op.equals(Operation.FORWARD)) {
Map<KUID, DHTValueEntity> bag = database.get(primaryKey);
valuesToForward.addAll(bag.values());
databaseStats.STORE_FORWARD_COUNT.incrementStat();
} else if (op.equals(Operation.DELETE)
&& DatabaseSettings.DELETE_VALUE_IF_FURTHEST_NODE.getValue()) {
Map<KUID, DHTValueEntity> bag = database.get(primaryKey);
for (DHTValueEntity entity : bag.values()) {
// System.out.println("REMOVING: " + entity + "\n");
database.remove(entity.getPrimaryKey(), entity.getSecondaryKey());
}
databaseStats.STORE_FORWARD_REMOVALS.incrementStat();
}
}
}
if (!valuesToForward.isEmpty()) {
SecurityToken securityToken = null;
if (message instanceof SecurityTokenProvider) {
securityToken = ((SecurityTokenProvider) message).getSecurityToken();
if (securityToken == null && StoreSettings.STORE_REQUIRES_SECURITY_TOKEN.getValue()) {
if (LOG.isInfoEnabled()) {
LOG.info(node + " sent us a null SecurityToken");
}
return;
}
}
context.store(node, securityToken, valuesToForward);
}
}
