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514 lines
21 KiB
514 lines
21 KiB
17 years ago
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// indexRepositoryReference.java
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// (C) 2006 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 2006 as part of 'plasmaCrawlLURL.java' on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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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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package de.anomic.index;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.Iterator;
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import de.anomic.data.htmlTools;
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import de.anomic.http.httpRemoteProxyConfig;
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import de.anomic.http.httpc;
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import de.anomic.http.httpc.response;
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import de.anomic.kelondro.kelondroBase64Order;
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import de.anomic.kelondro.kelondroCache;
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import de.anomic.kelondro.kelondroCloneableIterator;
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import de.anomic.kelondro.kelondroException;
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import de.anomic.kelondro.kelondroIndex;
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import de.anomic.kelondro.kelondroRow;
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import de.anomic.kelondro.kelondroRowSet;
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import de.anomic.kelondro.kelondroSplitTable;
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import de.anomic.plasma.urlPattern.plasmaURLPattern;
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import de.anomic.server.serverCodings;
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import de.anomic.server.logging.serverLog;
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import de.anomic.yacy.yacyURL;
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public final class indexRepositoryReference {
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// class objects
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private kelondroIndex urlIndexFile;
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private Export exportthread = null; // will habe a export thread assigned if exporter is running
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public indexRepositoryReference(File indexSecondaryRoot, String networkName) {
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super();
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File indexSecondaryPath = new File(indexSecondaryRoot, networkName);
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File indexSecondaryTextLocation = new File(indexSecondaryPath, "TEXT");
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if (!indexSecondaryTextLocation.exists()) {
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// patch old index locations; the secondary path is patched in plasmaCrawlLURL
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File oldSecondaryPath = new File(new File(indexSecondaryRoot, "PUBLIC"), "TEXT");
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File oldSecondaryTextLocation = new File(new File(indexSecondaryRoot, "PUBLIC"), "TEXT");
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if (oldSecondaryPath.exists() && oldSecondaryTextLocation.exists()) {
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// move the text folder from the old location to the new location
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assert !indexSecondaryTextLocation.exists();
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indexSecondaryTextLocation.mkdirs();
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if (oldSecondaryTextLocation.renameTo(indexSecondaryTextLocation)) {
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if (!oldSecondaryPath.delete()) oldSecondaryPath.deleteOnExit();
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} else {
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indexSecondaryTextLocation = oldSecondaryTextLocation; // emergency case: stay with old directory
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}
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}
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}
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urlIndexFile = new kelondroSplitTable(indexSecondaryTextLocation, "urls", indexURLEntry.rowdef, false);
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}
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public int size() {
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return urlIndexFile.size();
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}
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public void close() {
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if (urlIndexFile != null) {
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urlIndexFile.close();
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urlIndexFile = null;
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}
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}
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public synchronized int writeCacheSize() {
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if (urlIndexFile instanceof kelondroSplitTable) return ((kelondroSplitTable) urlIndexFile).writeBufferSize();
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if (urlIndexFile instanceof kelondroCache) return ((kelondroCache) urlIndexFile).writeBufferSize();
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return 0;
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}
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public synchronized indexURLEntry load(String urlHash, indexRWIEntry searchedWord, long ranking) {
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// generates an plasmaLURLEntry using the url hash
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// if the url cannot be found, this returns null
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if (urlHash == null) return null;
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try {
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kelondroRow.Entry entry = urlIndexFile.get(urlHash.getBytes());
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if (entry == null) return null;
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return new indexURLEntry(entry, searchedWord, ranking);
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} catch (IOException e) {
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return null;
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}
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}
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public synchronized void store(indexURLEntry entry) throws IOException {
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// Check if there is a more recent Entry already in the DB
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indexURLEntry oldEntry;
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try {
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if (exists(entry.hash())) {
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oldEntry = load(entry.hash(), null, 0);
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} else {
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oldEntry = null;
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}
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} catch (Exception e) {
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e.printStackTrace();
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oldEntry = null;
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}
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if ((oldEntry != null) && (entry.isOlder(oldEntry))) {
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// the fetched oldEntry is better, so return its properties instead of the new ones
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// this.urlHash = oldEntry.urlHash; // unnecessary, should be the same
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// this.url = oldEntry.url; // unnecessary, should be the same
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entry = oldEntry;
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return; // this did not need to be stored, but is updated
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}
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urlIndexFile.put(entry.toRowEntry(), new Date() /*entry.loaddate()*/);
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}
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public synchronized indexURLEntry newEntry(String propStr) {
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if (propStr != null && propStr.startsWith("{") && propStr.endsWith("}")) try {
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return new indexURLEntry(serverCodings.s2p(propStr.substring(1, propStr.length() - 1)));
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} catch (kelondroException e) {
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// wrong format
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return null;
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} else {
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return null;
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}
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}
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public synchronized boolean remove(String urlHash) {
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if (urlHash == null) return false;
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try {
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kelondroRow.Entry r = urlIndexFile.remove(urlHash.getBytes(), false);
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return r != null;
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} catch (IOException e) {
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return false;
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}
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}
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public synchronized boolean exists(String urlHash) {
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if (urlIndexFile == null) return false; // case may happen during shutdown
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try {
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return urlIndexFile.has(urlHash.getBytes());
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} catch (IOException e) {
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return false;
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}
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}
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public kelondroCloneableIterator<indexURLEntry> entries(boolean up, String firstHash) throws IOException {
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// enumerates entry elements
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return new kiter(up, firstHash);
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}
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public class kiter implements kelondroCloneableIterator<indexURLEntry> {
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// enumerates entry elements
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private Iterator<kelondroRow.Entry> iter;
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private boolean error;
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boolean up;
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public kiter(boolean up, String firstHash) throws IOException {
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this.up = up;
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this.iter = urlIndexFile.rows(up, (firstHash == null) ? null : firstHash.getBytes());
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this.error = false;
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}
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public kiter clone(Object secondHash) {
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try {
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return new kiter(up, (String) secondHash);
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} catch (IOException e) {
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return null;
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}
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}
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public final boolean hasNext() {
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if (this.error) return false;
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if (this.iter == null) return false;
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return this.iter.hasNext();
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}
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public final indexURLEntry next() {
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kelondroRow.Entry e = null;
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if (this.iter == null) { return null; }
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if (this.iter.hasNext()) { e = this.iter.next(); }
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if (e == null) { return null; }
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return new indexURLEntry(e, null, 0);
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}
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public final void remove() {
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this.iter.remove();
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}
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}
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/**
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* Uses an Iteration over urlHash.db to detect malformed URL-Entries.
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* Damaged URL-Entries will be marked in a HashSet and removed at the end of the function.
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*
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* @param homePath Root-Path where all information is to be found.
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*/
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public void deadlinkCleaner(httpRemoteProxyConfig proxyConfig) {
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serverLog log = new serverLog("URLDBCLEANUP");
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HashSet<String> damagedURLS = new HashSet<String>();
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try {
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Iterator<indexURLEntry> eiter = entries(true, null);
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int iteratorCount = 0;
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while (eiter.hasNext()) try {
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eiter.next();
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iteratorCount++;
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} catch (RuntimeException e) {
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if(e.getMessage() != null) {
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String m = e.getMessage();
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damagedURLS.add(m.substring(m.length() - 12));
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} else {
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log.logSevere("RuntimeException:", e);
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}
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}
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try { Thread.sleep(1000); } catch (InterruptedException e) { }
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log.logInfo("URLs vorher: " + urlIndexFile.size() + " Entries loaded during Iteratorloop: " + iteratorCount + " kaputte URLs: " + damagedURLS.size());
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Iterator<String> eiter2 = damagedURLS.iterator();
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String urlHash;
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while (eiter2.hasNext()) {
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urlHash = (String) eiter2.next();
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// trying to fix the invalid URL
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httpc theHttpc = null;
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String oldUrlStr = null;
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try {
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// getting the url data as byte array
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kelondroRow.Entry entry = urlIndexFile.get(urlHash.getBytes());
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// getting the wrong url string
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oldUrlStr = entry.getColString(1, null).trim();
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int pos = -1;
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if ((pos = oldUrlStr.indexOf("://")) != -1) {
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// trying to correct the url
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String newUrlStr = "http://" + oldUrlStr.substring(pos + 3);
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yacyURL newUrl = new yacyURL(newUrlStr, null);
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// doing a http head request to test if the url is correct
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theHttpc = new httpc(newUrl.getHost(), newUrl.getHost(), newUrl.getPort(), 30000, false, proxyConfig, null, null);
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response res = theHttpc.HEAD(newUrl.getPath(), null);
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if (res.statusCode == 200) {
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entry.setCol(1, newUrl.toString().getBytes());
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urlIndexFile.put(entry);
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log.logInfo("UrlDB-Entry with urlHash '" + urlHash + "' corrected\n\tURL: " + oldUrlStr + " -> " + newUrlStr);
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} else {
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remove(urlHash);
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log.logInfo("UrlDB-Entry with urlHash '" + urlHash + "' removed\n\tURL: " + oldUrlStr + "\n\tConnection Status: " + res.status);
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}
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theHttpc.close();
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}
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} catch (Exception e) {
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remove(urlHash);
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log.logInfo("UrlDB-Entry with urlHash '" + urlHash + "' removed\n\tURL: " + oldUrlStr + "\n\tExecption: " + e.getMessage());
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} finally {
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if (theHttpc != null) try {
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theHttpc.close();
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} catch (Exception e) { }
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}
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}
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log.logInfo("URLs nachher: " + size() + " kaputte URLs: " + damagedURLS.size());
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} catch (IOException e) {
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log.logSevere("IOException", e);
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}
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}
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public BlacklistCleaner getBlacklistCleaner(plasmaURLPattern blacklist) {
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return new BlacklistCleaner(blacklist);
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}
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public class BlacklistCleaner extends Thread {
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private boolean run = true;
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private boolean pause;
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public int blacklistedUrls = 0;
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public int totalSearchedUrls = 1;
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public String lastBlacklistedUrl = "";
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public String lastBlacklistedHash = "";
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public String lastUrl = "";
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public String lastHash = "";
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private plasmaURLPattern blacklist;
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public BlacklistCleaner(plasmaURLPattern blacklist) {
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this.blacklist = blacklist;
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}
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public void run() {
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try {
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serverLog.logInfo("URLDBCLEANER", "UrldbCleaner-Thread startet");
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final Iterator<indexURLEntry> eiter = entries(true, null);
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while (eiter.hasNext() && run) {
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synchronized (this) {
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if (this.pause) {
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try {
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this.wait();
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} catch (InterruptedException e) {
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serverLog.logWarning("URLDBCLEANER", "InterruptedException", e);
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this.run = false;
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return;
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}
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}
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}
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final indexURLEntry entry = eiter.next();
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if (entry == null) {
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serverLog.logFine("URLDBCLEANER", "entry == null");
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} else if (entry.hash() == null) {
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serverLog.logFine("URLDBCLEANER", ++blacklistedUrls + " blacklisted (" + ((double) blacklistedUrls / totalSearchedUrls) * 100 + "%): " + "hash == null");
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} else {
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final indexURLEntry.Components comp = entry.comp();
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totalSearchedUrls++;
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if (comp.url() == null) {
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serverLog.logFine("URLDBCLEANER", ++blacklistedUrls + " blacklisted (" + ((double) blacklistedUrls / totalSearchedUrls) * 100 + "%): " + entry.hash() + "URL == null");
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remove(entry.hash());
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} else if (blacklist.isListed(plasmaURLPattern.BLACKLIST_CRAWLER, comp.url()) ||
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blacklist.isListed(plasmaURLPattern.BLACKLIST_DHT, comp.url())) {
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lastBlacklistedUrl = comp.url().toNormalform(true, true);
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lastBlacklistedHash = entry.hash();
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serverLog.logFine("URLDBCLEANER", ++blacklistedUrls + " blacklisted (" + ((double) blacklistedUrls / totalSearchedUrls) * 100 + "%): " + entry.hash() + " " + comp.url().toNormalform(false, true));
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remove(entry.hash());
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if (blacklistedUrls % 100 == 0) {
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serverLog.logInfo("URLDBCLEANER", "Deleted " + blacklistedUrls + " URLs until now. Last deleted URL-Hash: " + lastBlacklistedUrl);
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}
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}
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lastUrl = comp.url().toNormalform(true, true);
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lastHash = entry.hash();
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}
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}
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} catch (RuntimeException e) {
|
||
|
|
if (e.getMessage() != null && e.getMessage().indexOf("not found in LURL") != -1) {
|
||
|
|
serverLog.logWarning("URLDBCLEANER", "urlHash not found in LURL", e);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
serverLog.logWarning("URLDBCLEANER", "RuntimeException", e);
|
||
|
|
run = false;
|
||
|
|
}
|
||
|
|
} catch (IOException e) {
|
||
|
|
e.printStackTrace();
|
||
|
|
run = false;
|
||
|
|
}
|
||
|
|
serverLog.logInfo("URLDBCLEANER", "UrldbCleaner-Thread stopped");
|
||
|
|
}
|
||
|
|
|
||
|
|
public void abort() {
|
||
|
|
synchronized(this) {
|
||
|
|
run = false;
|
||
|
|
this.notifyAll();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void pause() {
|
||
|
|
synchronized(this) {
|
||
|
|
if (!pause) {
|
||
|
|
pause = true;
|
||
|
|
serverLog.logInfo("URLDBCLEANER", "UrldbCleaner-Thread paused");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void endPause() {
|
||
|
|
synchronized(this) {
|
||
|
|
if (pause) {
|
||
|
|
pause = false;
|
||
|
|
this.notifyAll();
|
||
|
|
serverLog.logInfo("URLDBCLEANER", "UrldbCleaner-Thread resumed");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// export methods
|
||
|
|
public Export export(File f, String filter, int format, boolean dom) {
|
||
|
|
if ((exportthread != null) && (exportthread.isAlive())) {
|
||
|
|
serverLog.logWarning("LURL-EXPORT", "cannot start another export thread, already one running");
|
||
|
|
return exportthread;
|
||
|
|
}
|
||
|
|
this.exportthread = new Export(f, filter, format, dom);
|
||
|
|
this.exportthread.start();
|
||
|
|
return exportthread;
|
||
|
|
}
|
||
|
|
|
||
|
|
public Export export() {
|
||
|
|
return this.exportthread;
|
||
|
|
}
|
||
|
|
|
||
|
|
public class Export extends Thread {
|
||
|
|
private File f;
|
||
|
|
private String filter;
|
||
|
|
private int count;
|
||
|
|
private String failure;
|
||
|
|
private int format;
|
||
|
|
private boolean dom;
|
||
|
|
private kelondroRowSet doms;
|
||
|
|
|
||
|
|
public Export(File f, String filter, int format, boolean dom) {
|
||
|
|
// format: 0=text, 1=html, 2=rss/xml
|
||
|
|
this.f = f;
|
||
|
|
this.filter = filter;
|
||
|
|
this.count = 0;
|
||
|
|
this.failure = null;
|
||
|
|
this.format = format;
|
||
|
|
this.dom = dom;
|
||
|
|
if ((dom) && (format == 2)) dom = false;
|
||
|
|
this.doms = new kelondroRowSet(new kelondroRow("String hash-6", kelondroBase64Order.enhancedCoder, 0), 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void run() {
|
||
|
|
try {
|
||
|
|
f.getParentFile().mkdirs();
|
||
|
|
PrintWriter pw = new PrintWriter(new BufferedOutputStream(new FileOutputStream(f)));
|
||
|
|
if (format == 1) {
|
||
|
|
pw.println("<html><head></head><body>");
|
||
|
|
}
|
||
|
|
if (format == 2) {
|
||
|
|
pw.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
|
||
|
|
pw.println("<?xml-stylesheet type='text/xsl' href='/yacysearch.xsl' version='1.0'?>");
|
||
|
|
pw.println("<rss version=\"2.0\">");
|
||
|
|
pw.println("<channel>");
|
||
|
|
pw.println("<title>YaCy Peer-to-Peer - Web-Search LURL Export</title>");
|
||
|
|
pw.println("<description></description>");
|
||
|
|
pw.println("<link>http://yacy.net</link>");
|
||
|
|
}
|
||
|
|
|
||
|
|
Iterator<indexURLEntry> i = entries(true, null); // iterates indexURLEntry objects
|
||
|
|
indexURLEntry entry;
|
||
|
|
indexURLEntry.Components comp;
|
||
|
|
String url;
|
||
|
|
loop: while (i.hasNext()) {
|
||
|
|
entry = i.next();
|
||
|
|
comp = entry.comp();
|
||
|
|
url = comp.url().toNormalform(true, false);
|
||
|
|
if (!url.matches(filter)) continue;
|
||
|
|
if (dom) {
|
||
|
|
if (doms.has(entry.hash().substring(6).getBytes())) continue loop;
|
||
|
|
doms.add(entry.hash().substring(6).getBytes());
|
||
|
|
url = comp.url().getHost();
|
||
|
|
if (format == 0) {
|
||
|
|
pw.println(url);
|
||
|
|
}
|
||
|
|
if (format == 1) {
|
||
|
|
pw.println("<a href=\"http://" + url + "\">" + url + "</a><br>");
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (format == 0) {
|
||
|
|
pw.println(url);
|
||
|
|
}
|
||
|
|
if (format == 1) {
|
||
|
|
pw.println("<a href=\"" + url + "\">" + htmlTools.encodeUnicode2html(comp.dc_title(), true, true) + "</a><br>");
|
||
|
|
}
|
||
|
|
if (format == 2) {
|
||
|
|
pw.println("<item>");
|
||
|
|
pw.println("<title>" + htmlTools.encodeUnicode2html(comp.dc_title(), true, true) + "</title>");
|
||
|
|
pw.println("<link>" + yacyURL.escape(url) + "</link>");
|
||
|
|
if (comp.dc_creator().length() > 0) pw.println("<author>" + htmlTools.encodeUnicode2html(comp.dc_creator(), true, true) + "</author>");
|
||
|
|
if (comp.dc_subject().length() > 0) pw.println("<description>" + htmlTools.encodeUnicode2html(comp.dc_subject(), true, true) + "</description>");
|
||
|
|
pw.println("<pubDate>" + entry.moddate().toString() + "</pubDate>");
|
||
|
|
pw.println("<guid isPermaLink=\"false\">" + entry.hash() + "</guid>");
|
||
|
|
pw.println("</item>");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
count++;
|
||
|
|
}
|
||
|
|
if (format == 1) {
|
||
|
|
pw.println("</body></html>");
|
||
|
|
}
|
||
|
|
if (format == 2) {
|
||
|
|
pw.println("</channel>");
|
||
|
|
pw.println("</rss>");
|
||
|
|
}
|
||
|
|
pw.close();
|
||
|
|
} catch (IOException e) {
|
||
|
|
e.printStackTrace();
|
||
|
|
this.failure = e.getMessage();
|
||
|
|
}
|
||
|
|
// terminate process
|
||
|
|
}
|
||
|
|
|
||
|
|
public File file() {
|
||
|
|
return this.f;
|
||
|
|
}
|
||
|
|
|
||
|
|
public String failed() {
|
||
|
|
return this.failure;
|
||
|
|
}
|
||
|
|
|
||
|
|
public int count() {
|
||
|
|
return this.count;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|