/******************************************************************************
* Copyright © 2013-2016 The Nxt Core Developers. *
* *
* See the AUTHORS.txt, DEVELOPER-AGREEMENT.txt and LICENSE.txt files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* Nxt software, including this file, may be copied, modified, propagated, *
* or distributed except according to the terms contained in the LICENSE.txt *
* file. *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
package nxt.peer;
import nxt.Block;
import nxt.Nxt;
import nxt.NxtException;
import nxt.util.Convert;
import nxt.util.JSON;
import org.json.simple.JSONObject;
import org.json.simple.JSONStreamAware;
final class ProcessBlock extends PeerServlet.PeerRequestHandler {
static final ProcessBlock instance = new ProcessBlock();
private ProcessBlock() {}
@Override
JSONStreamAware processRequest(final JSONObject request, final Peer peer) {
String previousBlockId = (String)request.get("previousBlock");
Block lastBlock = Nxt.getBlockchain().getLastBlock();
if (lastBlock.getStringId().equals(previousBlockId) ||
(Convert.parseUnsignedLong(previousBlockId) == lastBlock.getPreviousBlockId()
&& lastBlock.getTimestamp() > Convert.parseLong(request.get("timestamp")))) {
Peers.peersService.submit(() -> {
try {
Nxt.getBlockchainProcessor().processPeerBlock(request);
} catch (NxtException | RuntimeException e) {
if (peer != null) {
peer.blacklist(e);
}
}
});
}
return JSON.emptyJSON;
}
@Override
boolean rejectWhileDownloading() {
return true;
}
}