// query.java
// -----------------------
// part of the AnomicHTTPD caching proxy
// (C) by Michael Peter Christen; mc@yacy.net
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// You must compile this file with
// javac -classpath .:../../classes query.java
// if the shell's current path is HTROOT
import java.io.IOException;
import net.yacy.cora.date.GenericFormatter;
import net.yacy.cora.protocol.HeaderFramework;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.kelondro.logging.Log;
import net.yacy.peers.Protocol;
import net.yacy.peers.Network;
import net.yacy.search.Switchboard;
import net.yacy.search.index.Segments;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
public final class query {
// example:
// http://localhost:8090/yacy/query.html?youare=sCJ6Tq8T0N9x&object=lurlcount
public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch ss) {
if (post == null || ss == null) { return null; }
// return variable that accumulates replacements
final Switchboard sb = (Switchboard) ss;
final serverObjects prop = new serverObjects();
prop.put("magic", Network.magic);
if ((post == null) || (ss == null) || !Protocol.authentifyRequest(post, ss)) {
prop.put("response", "-1"); // request rejected
return prop;
}
if ((sb.isRobinsonMode()) &&
(!sb.isPublicRobinson()) &&
(!sb.isInMyCluster(header.get(HeaderFramework.CONNECTION_PROP_CLIENTIP)))) {
// if we are a robinson cluster, answer only if we are public robinson peers,
// or we are a private cluster and the requester is in our cluster.
// if we don't answer, the remote peer will recognize us as junior peer,
// what would mean that our peer ping does not work
prop.put("response", "-1"); // request rejected
return prop;
}
// System.out.println("YACYQUERY: RECEIVED POST = " + ((post == null) ? "NULL" : post.toString()));
// final String iam = post.get("iam", ""); // complete seed of the requesting peer
final String youare = post.get("youare", ""); // seed hash of the target peer, used for testing network stability
// final String key = post.get("key", ""); // transmission key for response
final String obj = post.get("object", ""); // keyword for query subject
final String env = post.get("env", ""); // argument to query
prop.put("mytime", GenericFormatter.SHORT_SECOND_FORMATTER.format());
// check if we are the right target and requester has correct information about this peer
if (sb.peers.mySeed() == null || !sb.peers.mySeed().hash.equals(youare)) {
// this request has a wrong target
prop.put("response", "-1"); // request rejected
return prop;
}
// requests about environment
if (obj.equals("rwiurlcount")) try {
// the total number of different urls in the rwi is returned
// <env> shall contain a word hash, the number of assigned lurls to this hash is returned
prop.put("response", sb.indexSegments.termIndex(Segments.Process.PUBLIC).get(env.getBytes(), null).size());
return prop;
} catch (final IOException e) {
Log.logException(e);
}
if (obj.equals("rwicount")) {
// return the total number of available word indexes
prop.put("response", sb.indexSegments.termIndex(Segments.Process.PUBLIC).sizesMax());
return prop;
}
if (obj.equals("lurlcount")) {
// return the number of all available l-url's
prop.put("response", sb.indexSegments.urlMetadata(Segments.Process.PUBLIC).size());
return prop;
}
// requests about requirements
if (obj.equals("wantedlurls")) {
prop.put("response", "0"); // dummy response
return prop;
}
if (obj.equals("wantedpurls")) {
prop.put("response", "0"); // dummy response
return prop;
}
if (obj.equals("wantedword")) {
// response returns a list of wanted word hashes
prop.put("response", "0"); // dummy response
return prop;
}
if (obj.equals("wantedrwi")) {
// <env> shall contain a word hash, the number of wanted lurls for this hash is returned
prop.put("response", "0"); // dummy response
return prop;
}
if (obj.equals("wantedseeds")) {
// return a number of wanted seed
prop.put("response", "0"); // dummy response
return prop;
}
// return rewrite properties
return prop;
}
}