mirror of
https://github.com/yacy/yacy_search_server.git
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6ad39bae1e
this fixes the 'inconsistency' messages during start-up git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3457 6c8d7289-2bf4-0310-a012-ef5d649a1542
585 lines
25 KiB
Java
585 lines
25 KiB
Java
// plasmaCrawlLURL.java
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// -----------------------
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// part of YaCy
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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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/*
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This class provides storage functions for the plasma search engine.
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- the url-specific properties, including condenser results
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- the text content of the url
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Both entities are accessed with a hash, which is based on the MD5
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algorithm. The MD5 is not encoded as a hex value, but a b64 value.
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*/
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package de.anomic.plasma;
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import java.io.File;
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import java.io.IOException;
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import java.net.MalformedURLException;
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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 java.util.LinkedList;
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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.index.indexRWIEntryNew;
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import de.anomic.index.indexURLEntry;
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import de.anomic.index.indexURLEntryNew;
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import de.anomic.kelondro.kelondroBitfield;
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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.kelondroFlexSplitTable;
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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.net.URL;
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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.yacySeedDB;
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public final class plasmaCrawlLURL {
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// result stacks;
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// these have all entries of form
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// strings: urlHash + initiatorHash + ExecutorHash
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private final LinkedList externResultStack; // 1 - remote index: retrieved by other peer
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private final LinkedList searchResultStack; // 2 - partly remote/local index: result of search queries
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private final LinkedList transfResultStack; // 3 - partly remote/local index: result of index transfer
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private final LinkedList proxyResultStack; // 4 - local index: result of proxy fetch/prefetch
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private final LinkedList lcrawlResultStack; // 5 - local index: result of local crawling
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private final LinkedList gcrawlResultStack; // 6 - local index: triggered external
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// the class object
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private kelondroIndex urlIndexFile;
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public plasmaCrawlLURL(File indexPath, long preloadTime) {
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super();
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try {
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urlIndexFile = new kelondroFlexSplitTable(new File(indexPath, "PUBLIC/TEXT"), "urls", preloadTime, indexURLEntryNew.rowdef);
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} catch (IOException e) {
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e.printStackTrace();
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System.exit(-1);
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}
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// init result stacks
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externResultStack = new LinkedList();
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searchResultStack = new LinkedList();
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transfResultStack = new LinkedList();
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proxyResultStack = new LinkedList();
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lcrawlResultStack = new LinkedList();
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gcrawlResultStack = new LinkedList();
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}
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public int size() {
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try {
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return urlIndexFile.size();
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} catch (IOException e) {
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return 0;
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}
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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 void stack(indexURLEntry e, String initiatorHash, String executorHash, int stackType) {
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if (e == null) { return; }
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try {
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if (initiatorHash == null) { initiatorHash = plasmaURL.dummyHash; }
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if (executorHash == null) { executorHash = plasmaURL.dummyHash; }
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switch (stackType) {
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case 0: break;
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case 1: externResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 2: searchResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 3: transfResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 4: proxyResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 5: lcrawlResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 6: gcrawlResultStack.add(e.hash() + initiatorHash + executorHash); break;
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}
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return;
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} catch (Exception ex) {
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System.out.println("INTERNAL ERROR in newEntry/2: " + ex.toString());
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return;
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}
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}
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public synchronized void notifyGCrawl(String urlHash, String initiatorHash, String executorHash) {
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gcrawlResultStack.add(urlHash + initiatorHash + executorHash);
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}
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public synchronized void flushCacheSome() {
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try {
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if (urlIndexFile instanceof kelondroFlexSplitTable) ((kelondroFlexSplitTable) urlIndexFile).flushSome();
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if (urlIndexFile instanceof kelondroCache) ((kelondroCache) urlIndexFile).flushSome();
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} catch (IOException e) {}
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}
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public synchronized int writeCacheSize() {
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if (urlIndexFile instanceof kelondroFlexSplitTable) return ((kelondroFlexSplitTable) 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, indexRWIEntryNew searchedWord) {
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// generates an plasmaLURLEntry using the url hash
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// to speed up the access, the url-hashes are buffered
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// in the hash cache.
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// we have two options to find the url:
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// - look into the hash cache
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// - look into the filed properties
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// if the url cannot be found, this returns 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 indexURLEntryNew(entry, searchedWord);
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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);
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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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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(), 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("}")) {
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return new indexURLEntryNew(serverCodings.s2p(propStr.substring(1, propStr.length() - 1)));
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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 indexURLEntry newEntry(
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URL url,
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String descr,
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String author,
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String tags,
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String ETag,
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Date mod,
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Date load,
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Date fresh,
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String referrer,
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byte[] md5,
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long size,
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int wc,
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char dt,
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kelondroBitfield flags,
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String lang,
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int llocal,
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int lother,
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int laudio,
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int limage,
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int lvideo,
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int lapp) {
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return new indexURLEntryNew(url, descr, author, tags, ETag, mod, load, fresh, referrer, md5,
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size, wc, dt, flags, lang, llocal, lother, laudio, limage, lvideo, lapp);
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}
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public synchronized int getStackSize(int stack) {
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switch (stack) {
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case 1: return externResultStack.size();
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case 2: return searchResultStack.size();
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case 3: return transfResultStack.size();
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case 4: return proxyResultStack.size();
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case 5: return lcrawlResultStack.size();
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case 6: return gcrawlResultStack.size();
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}
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return -1;
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}
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public synchronized String getUrlHash(int stack, int pos) {
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switch (stack) {
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case 1: return ((String) externResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 2: return ((String) searchResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 3: return ((String) transfResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 4: return ((String) proxyResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 5: return ((String) lcrawlResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 6: return ((String) gcrawlResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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}
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return null;
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}
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public synchronized String getInitiatorHash(int stack, int pos) {
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switch (stack) {
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case 1: return ((String) externResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 2: return ((String) searchResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 3: return ((String) transfResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 4: return ((String) proxyResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 5: return ((String) lcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 6: return ((String) gcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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}
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return null;
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}
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public synchronized String getExecutorHash(int stack, int pos) {
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switch (stack) {
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case 1: return ((String) externResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 2: return ((String) searchResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 3: return ((String) transfResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 4: return ((String) proxyResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 5: return ((String) lcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 6: return ((String) gcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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}
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return null;
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}
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public synchronized boolean removeStack(int stack, int pos) {
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Object prevElement = null;
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switch (stack) {
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case 1: prevElement = externResultStack.remove(pos); break;
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case 2: prevElement = searchResultStack.remove(pos); break;
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case 3: prevElement = transfResultStack.remove(pos); break;
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case 4: prevElement = proxyResultStack.remove(pos); break;
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case 5: prevElement = lcrawlResultStack.remove(pos); break;
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case 6: prevElement = gcrawlResultStack.remove(pos); break;
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}
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return prevElement != null;
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}
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public synchronized void clearStack(int stack) {
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switch (stack) {
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case 1: externResultStack.clear(); break;
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case 2: searchResultStack.clear(); break;
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case 3: transfResultStack.clear(); break;
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case 4: proxyResultStack.clear(); break;
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case 5: lcrawlResultStack.clear(); break;
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case 6: gcrawlResultStack.clear(); break;
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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());
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if (r == null) return false;
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for (int stack = 1; stack <= 6; stack++) {
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for (int i = getStackSize(stack) - 1; i >= 0; i--) {
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if (getUrlHash(stack, i).equals(urlHash)) {
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removeStack(stack, i);
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return true;
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}
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}
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}
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return true;
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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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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 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 {
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// enumerates entry elements
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private Iterator 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 = plasmaCrawlLURL.this.urlIndexFile.rows(up, (firstHash == null) ? null : firstHash.getBytes());
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this.error = false;
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}
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public Object 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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return this.iter.hasNext();
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}
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public final Object 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 = (kelondroRow.Entry) this.iter.next(); }
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if (e == null) { return null; }
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return new indexURLEntryNew(e, null);
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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 urldbcleanup() {
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serverLog log = new serverLog("URLDBCLEANUP");
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HashSet damagedURLS = new HashSet();
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try {
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Iterator 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: " + size() + " Entries loaded during Iteratorloop: " + iteratorCount + " kaputte URLs: " + damagedURLS.size());
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Iterator 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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URL newUrl = new URL(newUrlStr);
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// doing a http head request to test if the url is correct
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theHttpc = httpc.getInstance(newUrl.getHost(), newUrl.getHost(), newUrl.getPort(), 30000, false);
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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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}
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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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httpc.returnInstance(theHttpc);
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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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}
|
|
|
|
// The Cleaner class was provided as "UrldbCleaner" by Hydrox
|
|
// see http://www.yacy-forum.de/viewtopic.php?p=18093#18093
|
|
public Cleaner makeCleaner() {
|
|
return new Cleaner();
|
|
}
|
|
|
|
public class Cleaner extends Thread {
|
|
|
|
private boolean run = true;
|
|
private boolean pause;
|
|
public int blacklistedUrls = 0;
|
|
public int totalSearchedUrls = 1;
|
|
public String lastBlacklistedUrl = "";
|
|
public String lastBlacklistedHash = "";
|
|
public String lastUrl = "";
|
|
public String lastHash = "";
|
|
|
|
public Cleaner() {
|
|
}
|
|
|
|
public void run() {
|
|
try {
|
|
serverLog.logInfo("URLDBCLEANER", "UrldbCleaner-Thread startet");
|
|
final Iterator eiter = entries(true, null);
|
|
while (eiter.hasNext() && run) {
|
|
synchronized (this) {
|
|
if (this.pause) {
|
|
try {
|
|
this.wait();
|
|
} catch (InterruptedException e) {
|
|
serverLog.logWarning("URLDBCLEANER", "InterruptedException", e);
|
|
this.run = false;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
final indexURLEntry entry = (indexURLEntry) eiter.next();
|
|
if (entry == null) {
|
|
serverLog.logFine("URLDBCLEANER", "entry == null");
|
|
} else if (entry.hash() == null) {
|
|
serverLog.logFine("URLDBCLEANER", ++blacklistedUrls + " blacklisted (" + ((double) blacklistedUrls / totalSearchedUrls) * 100 + "%): " + "hash == null");
|
|
} else {
|
|
final indexURLEntry.Components comp = entry.comp();
|
|
totalSearchedUrls++;
|
|
if (comp.url() == null) {
|
|
serverLog.logFine("URLDBCLEANER", ++blacklistedUrls + " blacklisted (" + ((double) blacklistedUrls / totalSearchedUrls) * 100 + "%): " + entry.hash() + "URL == null");
|
|
remove(entry.hash());
|
|
} else if (plasmaSwitchboard.urlBlacklist.isListed(plasmaURLPattern.BLACKLIST_CRAWLER, comp.url()) ||
|
|
plasmaSwitchboard.urlBlacklist.isListed(plasmaURLPattern.BLACKLIST_DHT, comp.url())) {
|
|
lastBlacklistedUrl = comp.url().toNormalform();
|
|
lastBlacklistedHash = entry.hash();
|
|
serverLog.logFine("URLDBCLEANER", ++blacklistedUrls + " blacklisted (" + ((double) blacklistedUrls / totalSearchedUrls) * 100 + "%): " + entry.hash() + " " + comp.url().toNormalform());
|
|
remove(entry.hash());
|
|
if (blacklistedUrls % 100 == 0) {
|
|
serverLog.logInfo("URLDBCLEANER", "Deleted " + blacklistedUrls + " URLs until now. Last deleted URL-Hash: " + lastBlacklistedUrl);
|
|
}
|
|
}
|
|
lastUrl = comp.url().toNormalform();
|
|
lastHash = entry.hash();
|
|
}
|
|
}
|
|
} 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");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
public static void main(String[] args) {
|
|
// test-generation of url hashes for debugging
|
|
// one argument requires, will be treated as url
|
|
// returns url-hash
|
|
if (args[0].equals("-h")) try {
|
|
// arg 1 is url
|
|
System.out.println("HASH: " + plasmaURL.urlHash(new URL(args[1])));
|
|
} catch (MalformedURLException e) {}
|
|
if (args[0].equals("-l")) try {
|
|
// arg 1 is path to URLCache
|
|
final plasmaCrawlLURL urls = new plasmaCrawlLURL(new File(args[2]), 0);
|
|
final Iterator enu = urls.entries(true, null);
|
|
while (enu.hasNext()) {
|
|
System.out.println(((indexURLEntry) enu.next()).toString());
|
|
}
|
|
} catch (Exception e) {
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
|
|
}
|