/**
* Send to a subset of all floodfill peers. We do this to implement Kademlia within the
* floodfills, i.e. we flood to those closest to the key.
*/
public void flood(DatabaseEntry ds) {
Hash key = ds.getHash();
Hash rkey = _context.routingKeyGenerator().getRoutingKey(key);
FloodfillPeerSelector sel = (FloodfillPeerSelector) getPeerSelector();
List<Hash> peers = sel.selectFloodfillParticipants(rkey, MAX_TO_FLOOD, getKBuckets());
int flooded = 0;
for (int i = 0; i < peers.size(); i++) {
Hash peer = peers.get(i);
RouterInfo target = lookupRouterInfoLocally(peer);
if ((target == null) || (_context.banlist().isBanlisted(peer))) continue;
// Don't flood a RI back to itself
// Not necessary, a ff will do its own flooding (reply token == 0)
// if (peer.equals(target.getIdentity().getHash()))
// continue;
if (peer.equals(_context.routerHash())) continue;
DatabaseStoreMessage msg = new DatabaseStoreMessage(_context);
msg.setEntry(ds);
OutNetMessage m =
new OutNetMessage(
_context, msg, _context.clock().now() + FLOOD_TIMEOUT, FLOOD_PRIORITY, target);
// note send failure but don't give credit on success
// might need to change this
Job floodFail = new FloodFailedJob(_context, peer);
m.setOnFailedSendJob(floodFail);
_context.commSystem().processMessage(m);
flooded++;
if (_log.shouldLog(Log.INFO))
_log.info("Flooding the entry for " + key.toBase64() + " to " + peer.toBase64());
}
if (_log.shouldLog(Log.INFO))
_log.info("Flooded the data to " + flooded + " of " + peers.size() + " peers");
}
/**
* Resend the leaseSet to the peer who had previously failed to provide us with the data when we
* asked them.
*/
private boolean resend(RouterInfo toPeer, LeaseSet ls) {
Hash to = toPeer.getIdentity().getHash();
DatabaseStoreMessage msg = new DatabaseStoreMessage(getContext());
msg.setEntry(ls);
msg.setMessageExpiration(getContext().clock().now() + RESEND_TIMEOUT);
TunnelInfo outTunnel = getContext().tunnelManager().selectOutboundExploratoryTunnel(to);
if (outTunnel != null) {
TunnelId targetTunnelId = null; // not needed
Job onSend = null; // not wanted
if (_log.shouldLog(Log.DEBUG))
_log.debug("resending leaseSet out to " + to + " through " + outTunnel + ": " + msg);
getContext().tunnelDispatcher().dispatchOutbound(msg, outTunnel.getSendTunnelId(0), null, to);
return true;
} else {
if (_log.shouldLog(Log.WARN))
_log.warn("unable to resend a leaseSet - no outbound exploratory tunnels!");
return false;
}
}
