http://forum.yacy-websuche.de/viewtopic.php?p=18120#p18120 git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6476 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
orbiter
15 years ago
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//crawlReceipt.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: 2009-11-05 21:28:37 +0100 (Do, 05 Nov 2009) $
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//$LastChangedRevision: 6458 $
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//$LastChangedBy: orbiter $
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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 crawlOrder.java
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package de.anomic.http.server.servlets;
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import java.io.IOException;
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import net.yacy.kelondro.data.meta.URIMetadataRow;
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import net.yacy.kelondro.logging.Log;
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import de.anomic.crawler.retrieval.EventOrigin;
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import de.anomic.http.server.RequestHeader;
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import de.anomic.search.Segments;
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import de.anomic.search.Switchboard;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.tools.crypt;
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import de.anomic.yacy.yacyNetwork;
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import de.anomic.yacy.yacySeed;
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public final class crawlReceipt {
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/*
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* this is used to respond on a remote crawling request
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*/
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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// return variable that accumulates replacements
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final Switchboard sb = (Switchboard) env;
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final serverObjects prop = new serverObjects();
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if ((post == null) || (env == null)) return prop;
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if (!yacyNetwork.authentifyRequest(post, env)) return prop;
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final Log log = sb.getLog();
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//int proxyPrefetchDepth = Integer.parseInt(env.getConfig("proxyPrefetchDepth", "0"));
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//int crawlingDepth = Integer.parseInt(env.getConfig("crawlingDepth", "0"));
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// request values
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final String iam = post.get("iam", ""); // seed hash of requester
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final String youare = post.get("youare", ""); // seed hash of the target peer, needed for network stability
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//String process = post.get("process", ""); // process type
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final String key = post.get("key", ""); // transmission key
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//String receivedUrlhash = post.get("urlhash", ""); // the url hash that has been crawled
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final String result = post.get("result", ""); // the result; either "ok" or "fail"
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final String reason = post.get("reason", ""); // the reason for that result
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//String words = post.get("wordh", ""); // priority word hashes
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final String propStr = crypt.simpleDecode(post.get("lurlEntry", ""), key);
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/*
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the result can have one of the following values:
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negative cases, no retry
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unavailable - the resource is not available (a broken link); not found or interrupted
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exception - an exception occurred
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robot - a robot-file has denied to crawl that resource
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negative cases, retry possible
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rejected - the peer has rejected to load the resource
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dequeue - peer too busy - rejected to crawl
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positive cases with crawling
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fill - the resource was loaded and processed
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update - the resource was already in database but re-loaded and processed
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positive cases without crawling
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known - the resource is already in database, believed to be fresh and not reloaded
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stale - the resource was reloaded but not processed because source had no changes
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*/
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final yacySeed otherPeer = sb.peers.get(iam);
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final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion()));
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if ((sb.peers.mySeed() == null) || (!(sb.peers.mySeed().hash.equals(youare)))) {
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// no yacy connection / unknown peers
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prop.put("delay", "3600");
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return prop;
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}
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if (propStr == null) {
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// error with url / wrong key
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prop.put("delay", "3600");
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return prop;
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}
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if ((sb.isRobinsonMode()) && (!sb.isInMyCluster(otherPeer))) {
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// we reject urls that are from outside our cluster
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prop.put("delay", "9999");
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}
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// generating a new loaded URL entry
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final URIMetadataRow entry = URIMetadataRow.importEntry(propStr);
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if (entry == null) {
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log.logWarning("crawlReceipt: RECEIVED wrong RECEIPT (entry null) from peer " + iam + "\n\tURL properties: "+ propStr);
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prop.put("delay", "3600");
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return prop;
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}
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final URIMetadataRow.Components metadata = entry.metadata();
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if (metadata.url() == null) {
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log.logWarning("crawlReceipt: RECEIVED wrong RECEIPT (url null) for hash " + entry.hash() + " from peer " + iam + "\n\tURL properties: "+ propStr);
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prop.put("delay", "3600");
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return prop;
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}
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// check if the entry is in our network domain
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final String urlRejectReason = sb.crawlStacker.urlInAcceptedDomain(metadata.url());
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if (urlRejectReason != null) {
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log.logWarning("crawlReceipt: RECEIVED wrong RECEIPT (" + urlRejectReason + ") for hash " + entry.hash() + " from peer " + iam + "\n\tURL properties: "+ propStr);
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prop.put("delay", "9999");
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return prop;
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}
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if (result.equals("fill")) try {
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// put new entry into database
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sb.indexSegments.urlMetadata(Segments.Process.RECEIPTS).store(entry);
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sb.crawlResults.stack(entry, youare, iam, EventOrigin.REMOTE_RECEIPTS);
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sb.crawlQueues.delegatedURL.remove(entry.hash()); // the delegated work has been done
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log.logInfo("crawlReceipt: RECEIVED RECEIPT from " + otherPeerName + " for URL " + entry.hash() + ":" + metadata.url().toNormalform(false, true));
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// ready for more
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prop.put("delay", "10");
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return prop;
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} catch (final IOException e) {
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Log.logException(e);
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prop.put("delay", "3600");
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return prop;
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}
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sb.crawlQueues.delegatedURL.remove(entry.hash()); // the delegated work is transformed into an error case
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sb.crawlQueues.errorURL.push(
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entry.toBalancerEntry(iam),
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youare,
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null,
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0,
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result + ":" + reason);
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//switchboard.noticeURL.remove(receivedUrlhash);
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prop.put("delay", "3600");
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return prop;
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// return rewrite properties
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}
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}
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