mirror of
https://github.com/yacy/yacy_search_server.git
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395f2e8946
to make all readily available information from the original ServletRequest available to YaCy servlets (without converting data to internal structures). The implementation of the common interface allows easier integration of YaCy servlets with the servlet standard (e.g. shared login service with the servlet container etc.)
151 lines
6.0 KiB
Java
151 lines
6.0 KiB
Java
// query.java
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// -----------------------
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// part of the AnomicHTTPD caching proxy
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// You must compile this file with
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// javac -classpath .:../../classes query.java
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// if the shell's current path is HTROOT
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import java.io.IOException;
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import net.yacy.cora.date.GenericFormatter;
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import net.yacy.cora.protocol.HeaderFramework;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.peers.Network;
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import net.yacy.peers.Protocol;
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import net.yacy.search.Switchboard;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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public final class query {
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// example:
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// http://localhost:8090/yacy/query.html?youare=sCJ6Tq8T0N9x&object=lurlcount
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch ss) {
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if (post == null || ss == null) { return null; }
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// return variable that accumulates replacements
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final Switchboard sb = (Switchboard) ss;
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// remember the peer contact for peer statistics
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final String clientip = header.getRemoteAddr();
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final String userAgent = header.get(HeaderFramework.USER_AGENT, "<unknown>");
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if (clientip != null) sb.peers.peerActions.setUserAgent(clientip, userAgent);
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final serverObjects prop = new serverObjects();
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prop.put("magic", Network.magic);
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if ((post == null) || (ss == null) || !Protocol.authentifyRequest(post, ss)) {
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prop.put("response", "-1"); // request rejected
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return prop;
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}
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if ((sb.isRobinsonMode()) &&
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(!sb.isPublicRobinson()) &&
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(!sb.isInMyCluster(clientip))) {
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// if we are a robinson cluster, answer only if we are public robinson peers,
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// or we are a private cluster and the requester is in our cluster.
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// if we don't answer, the remote peer will recognize us as junior peer,
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// what would mean that our peer ping does not work
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prop.put("response", "-1"); // request rejected
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return prop;
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}
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// System.out.println("YACYQUERY: RECEIVED POST = " + ((post == null) ? "NULL" : post.toString()));
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// final String iam = post.get("iam", ""); // complete seed of the requesting peer
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final String youare = post.get("youare", ""); // seed hash of the target peer, used for testing network stability
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// final String key = post.get("key", ""); // transmission key for response
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final String obj = post.get("object", ""); // keyword for query subject
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final String env = post.get("env", ""); // argument to query
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prop.put("mytime", GenericFormatter.SHORT_SECOND_FORMATTER.format());
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// check if we are the right target and requester has correct information about this peer
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if (sb.peers.mySeed() == null || !sb.peers.mySeed().hash.equals(youare)) {
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// this request has a wrong target
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prop.put("response", "-1"); // request rejected
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return prop;
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}
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// requests about environment
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if (obj.equals("rwiurlcount")) try {
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// the total number of different urls in the rwi is returned
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// <env> shall contain a word hash, the number of assigned lurls to this hash is returned
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prop.put("response", sb.index.termIndex() == null ? 0 : sb.index.termIndex().get(env.getBytes(), null).size());
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return prop;
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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}
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if (obj.equals("rwicount")) {
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// return the total number of available word indexes
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prop.put("response", sb.index.RWICount());
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return prop;
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}
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if (obj.equals("lurlcount")) {
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// return the number of all available l-url's
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prop.put("response", "1" /*sb.index.fulltext().collectionSize()*/); // patched to not call collectionSize() any more because the acutal size is not needed. Instead, rwicount should be called
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return prop;
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}
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// requests about requirements
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if (obj.equals("wantedlurls")) {
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prop.put("response", "0"); // dummy response
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return prop;
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}
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if (obj.equals("wantedpurls")) {
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prop.put("response", "0"); // dummy response
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return prop;
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}
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if (obj.equals("wantedword")) {
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// response returns a list of wanted word hashes
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prop.put("response", "0"); // dummy response
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return prop;
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}
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if (obj.equals("wantedrwi")) {
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// <env> shall contain a word hash, the number of wanted lurls for this hash is returned
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prop.put("response", "0"); // dummy response
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return prop;
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}
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if (obj.equals("wantedseeds")) {
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// return a number of wanted seed
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prop.put("response", "0"); // dummy response
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return prop;
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}
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// return rewrite properties
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return prop;
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}
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}
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