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added crawlReceipt servlet as individual class to examine OOM problem…
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… as documented in

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-ef5d649a1542
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orbiter committed Nov 11, 2009
1 parent 2d3c98b commit 7144d2d
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10 changes: 10 additions & 0 deletions source/de/anomic/http/server/HTTPDFileHandler.java
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Expand Up @@ -93,6 +93,7 @@ public static java.util.Hashtable respond(java.util.HashMap, serverSwitch)
import net.yacy.kelondro.util.MemoryControl;
import net.yacy.visualization.RasterPlotter;

import de.anomic.http.server.servlets.crawlReceipt;
import de.anomic.http.server.servlets.transferURL;
import de.anomic.search.Switchboard;
import de.anomic.search.SwitchboardConstants;
Expand Down Expand Up @@ -1181,6 +1182,15 @@ public static final Object invokeServlet(final File targetClass, final RequestHe
throw new InvocationTargetException(e);
}
}
if (targetClass.getName().equals("crawlReceipt.class")) {
try {
return crawlReceipt.respond(request, args, switchboard);
} catch (Exception e) {
Log.logException(e);
Log.logSevere("HTTPFileHandler", "fail of crawlReceipt", e);
throw new InvocationTargetException(e);
}
}

Object result;
if (safeServletsMode) synchronized (switchboard) {
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172 changes: 172 additions & 0 deletions source/de/anomic/http/server/servlets/crawlReceipt.java
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@@ -0,0 +1,172 @@
//crawlReceipt.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: 2009-11-05 21:28:37 +0100 (Do, 05 Nov 2009) $
//$LastChangedRevision: 6458 $
//$LastChangedBy: orbiter $
//
//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 crawlOrder.java

package de.anomic.http.server.servlets;


import java.io.IOException;

import net.yacy.kelondro.data.meta.URIMetadataRow;
import net.yacy.kelondro.logging.Log;

import de.anomic.crawler.retrieval.EventOrigin;
import de.anomic.http.server.RequestHeader;
import de.anomic.search.Segments;
import de.anomic.search.Switchboard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.tools.crypt;
import de.anomic.yacy.yacyNetwork;
import de.anomic.yacy.yacySeed;

public final class crawlReceipt {


/*
* this is used to respond on a remote crawling request
*/

public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
// return variable that accumulates replacements
final Switchboard sb = (Switchboard) env;
final serverObjects prop = new serverObjects();
if ((post == null) || (env == null)) return prop;
if (!yacyNetwork.authentifyRequest(post, env)) return prop;

final Log log = sb.getLog();

//int proxyPrefetchDepth = Integer.parseInt(env.getConfig("proxyPrefetchDepth", "0"));
//int crawlingDepth = Integer.parseInt(env.getConfig("crawlingDepth", "0"));

// request values
final String iam = post.get("iam", ""); // seed hash of requester
final String youare = post.get("youare", ""); // seed hash of the target peer, needed for network stability
//String process = post.get("process", ""); // process type
final String key = post.get("key", ""); // transmission key
//String receivedUrlhash = post.get("urlhash", ""); // the url hash that has been crawled
final String result = post.get("result", ""); // the result; either "ok" or "fail"
final String reason = post.get("reason", ""); // the reason for that result
//String words = post.get("wordh", ""); // priority word hashes
final String propStr = crypt.simpleDecode(post.get("lurlEntry", ""), key);

/*
the result can have one of the following values:
negative cases, no retry
unavailable - the resource is not available (a broken link); not found or interrupted
exception - an exception occurred
robot - a robot-file has denied to crawl that resource
negative cases, retry possible
rejected - the peer has rejected to load the resource
dequeue - peer too busy - rejected to crawl
positive cases with crawling
fill - the resource was loaded and processed
update - the resource was already in database but re-loaded and processed
positive cases without crawling
known - the resource is already in database, believed to be fresh and not reloaded
stale - the resource was reloaded but not processed because source had no changes
*/

final yacySeed otherPeer = sb.peers.get(iam);
final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion()));

if ((sb.peers.mySeed() == null) || (!(sb.peers.mySeed().hash.equals(youare)))) {
// no yacy connection / unknown peers
prop.put("delay", "3600");
return prop;
}

if (propStr == null) {
// error with url / wrong key
prop.put("delay", "3600");
return prop;
}

if ((sb.isRobinsonMode()) && (!sb.isInMyCluster(otherPeer))) {
// we reject urls that are from outside our cluster
prop.put("delay", "9999");
}

// generating a new loaded URL entry
final URIMetadataRow entry = URIMetadataRow.importEntry(propStr);
if (entry == null) {
log.logWarning("crawlReceipt: RECEIVED wrong RECEIPT (entry null) from peer " + iam + "\n\tURL properties: "+ propStr);
prop.put("delay", "3600");
return prop;
}

final URIMetadataRow.Components metadata = entry.metadata();
if (metadata.url() == null) {
log.logWarning("crawlReceipt: RECEIVED wrong RECEIPT (url null) for hash " + entry.hash() + " from peer " + iam + "\n\tURL properties: "+ propStr);
prop.put("delay", "3600");
return prop;
}

// check if the entry is in our network domain
final String urlRejectReason = sb.crawlStacker.urlInAcceptedDomain(metadata.url());
if (urlRejectReason != null) {
log.logWarning("crawlReceipt: RECEIVED wrong RECEIPT (" + urlRejectReason + ") for hash " + entry.hash() + " from peer " + iam + "\n\tURL properties: "+ propStr);
prop.put("delay", "9999");
return prop;
}

if (result.equals("fill")) try {
// put new entry into database
sb.indexSegments.urlMetadata(Segments.Process.RECEIPTS).store(entry);
sb.crawlResults.stack(entry, youare, iam, EventOrigin.REMOTE_RECEIPTS);
sb.crawlQueues.delegatedURL.remove(entry.hash()); // the delegated work has been done
log.logInfo("crawlReceipt: RECEIVED RECEIPT from " + otherPeerName + " for URL " + entry.hash() + ":" + metadata.url().toNormalform(false, true));

// ready for more
prop.put("delay", "10");
return prop;
} catch (final IOException e) {
Log.logException(e);
prop.put("delay", "3600");
return prop;
}

sb.crawlQueues.delegatedURL.remove(entry.hash()); // the delegated work is transformed into an error case
sb.crawlQueues.errorURL.push(
entry.toBalancerEntry(iam),
youare,
null,
0,
result + ":" + reason);
//switchboard.noticeURL.remove(receivedUrlhash);
prop.put("delay", "3600");
return prop;

// return rewrite properties

}

}

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