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190 lines
8.3 KiB
190 lines
8.3 KiB
// 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@anomic.de
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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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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// You must compile this file with
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// javac -classpath .:../classes crawlOrder.java
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import java.io.IOException;
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import de.anomic.crawler.ZURL;
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import de.anomic.http.httpHeader;
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import de.anomic.index.indexURLReference;
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import de.anomic.plasma.plasmaSwitchboard;
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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.server.logging.serverLog;
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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(httpHeader header, serverObjects post, serverSwitch<?> env) {
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// return variable that accumulates replacements
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plasmaSwitchboard sb = (plasmaSwitchboard) env;
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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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serverLog 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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String iam = post.get("iam", ""); // seed hash of requester
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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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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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String result = post.get("result", ""); // the result; either "ok" or "fail"
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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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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.webIndex.seedDB.get(iam);
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final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion()));
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if ((sb.webIndex.seedDB.mySeed() == null) || (!(sb.webIndex.seedDB.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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indexURLReference entry = indexURLReference.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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indexURLReference.Components comp = entry.comp();
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if (comp.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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String urlRejectReason = sb.acceptURL(comp.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.webIndex.putURL(entry);
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sb.crawlResults.stack(entry, youare, iam, 1);
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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() + ":" + comp.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 (IOException e) {
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e.printStackTrace();
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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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ZURL.Entry ee = sb.crawlQueues.errorURL.newEntry(
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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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ee.store();
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sb.crawlQueues.errorURL.push(ee);
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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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