DumpPeers.java

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 * Copyright © 2013-2016 The Nxt Core Developers.                             *
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 * Nxt software, including this file, may be copied, modified, propagated,    *
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 ******************************************************************************/

package nxt.http;

import nxt.Constants;
import nxt.peer.Peer;
import nxt.peer.Peers;
import nxt.util.Convert;
import org.json.simple.JSONObject;
import org.json.simple.JSONStreamAware;

import javax.servlet.http.HttpServletRequest;
import java.util.HashSet;
import java.util.Set;

public final class DumpPeers extends APIServlet.APIRequestHandler {

    static final DumpPeers instance = new DumpPeers();

    private DumpPeers() {
        super(new APITag[] {APITag.DEBUG}, "version", "weight", "connect", "adminPassword");
    }

    @Override
    JSONStreamAware processRequest(HttpServletRequest req) throws ParameterException {

        String version = Convert.nullToEmpty(req.getParameter("version"));
        int weight = ParameterParser.getInt(req, "weight", 0, (int)Constants.MAX_BALANCE_NXT, false);
        boolean connect = "true".equalsIgnoreCase(req.getParameter("connect")) && API.checkPassword(req);
        if (connect) {
            Peers.getAllPeers().parallelStream().unordered().forEach(Peers::connectPeer);
        }
        Set<String> addresses = new HashSet<>();
        Peers.getAllPeers().forEach(peer -> {
                    if (peer.getState() == Peer.State.CONNECTED
                            && peer.shareAddress()
                            && !peer.isBlacklisted()
                            && peer.getVersion() != null && peer.getVersion().startsWith(version)
                            && (weight == 0 || peer.getWeight() > weight)) {
                        addresses.add(peer.getAnnouncedAddress());
                    }
                });
        StringBuilder buf = new StringBuilder();
        for (String address : addresses) {
            buf.append(address).append("; ");
        }
        JSONObject response = new JSONObject();
        response.put("peers", buf.toString());
        response.put("count", addresses.size());
        return response;
    }

    @Override
    final boolean requirePost() {
        return true;
    }

    @Override
    boolean allowRequiredBlockParameters() {
        return false;
    }

    @Override
    boolean requireBlockchain() {
        return false;
    }

}