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717 lines
34 KiB
717 lines
34 KiB
// Segment.java
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// (C) 2005-2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 2005 on http://yacy.net; full redesign for segments 28.5.2009
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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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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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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 net.yacy.search.index;
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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.Iterator;
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import java.util.Map;
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import java.util.Properties;
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import java.util.Set;
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import java.util.concurrent.BlockingQueue;
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import org.apache.solr.common.SolrDocument;
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import org.apache.solr.common.SolrDocumentList;
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import org.apache.solr.common.SolrInputDocument;
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import net.yacy.cora.document.ASCII;
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import net.yacy.cora.document.MultiProtocolURI;
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import net.yacy.cora.document.UTF8;
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import net.yacy.cora.federate.solr.connector.AbstractSolrConnector;
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import net.yacy.cora.federate.yacy.CacheStrategy;
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import net.yacy.cora.order.Base64Order;
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import net.yacy.cora.order.ByteOrder;
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import net.yacy.cora.protocol.ResponseHeader;
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import net.yacy.cora.storage.HandleSet;
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import net.yacy.cora.util.LookAheadIterator;
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import net.yacy.cora.util.SpaceExceededException;
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import net.yacy.crawler.data.CrawlQueues;
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import net.yacy.crawler.retrieval.Response;
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import net.yacy.document.Condenser;
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import net.yacy.document.Document;
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import net.yacy.document.Parser;
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import net.yacy.kelondro.data.citation.CitationReference;
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import net.yacy.kelondro.data.citation.CitationReferenceFactory;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.data.meta.URIMetadataRow;
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import net.yacy.kelondro.data.word.Word;
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import net.yacy.kelondro.data.word.WordReference;
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import net.yacy.kelondro.data.word.WordReferenceFactory;
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import net.yacy.kelondro.data.word.WordReferenceRow;
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import net.yacy.kelondro.index.RowHandleSet;
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import net.yacy.kelondro.logging.Log;
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import net.yacy.kelondro.rwi.IndexCell;
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import net.yacy.kelondro.rwi.ReferenceContainer;
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import net.yacy.kelondro.rwi.ReferenceFactory;
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import net.yacy.kelondro.util.Bitfield;
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import net.yacy.kelondro.util.ByteBuffer;
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import net.yacy.kelondro.util.ISO639;
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import net.yacy.kelondro.util.MemoryControl;
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import net.yacy.repository.LoaderDispatcher;
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import net.yacy.search.query.SearchEvent;
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import net.yacy.search.schema.CollectionConfiguration;
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import net.yacy.search.schema.CollectionSchema;
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import net.yacy.search.schema.WebgraphConfiguration;
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public class Segment {
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// catchall word
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public final static String catchallString = "yacyall"; // a word that is always in all indexes; can be used for zero-word searches to find ALL documents
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public final static byte[] catchallHash;
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final static Word catchallWord = new Word(0, 0, 0);
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static {
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catchallHash = Word.word2hash(catchallString); // "KZzU-Vf6h5k-"
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catchallWord.flags = new Bitfield(4);
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for (int i = 0; i < catchallWord.flags.length(); i++) catchallWord.flags.set(i, true);
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}
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// environment constants
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public static final long wCacheMaxAge = 1000 * 60 * 30; // milliseconds; 30 minutes
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public static final int wCacheMaxChunk = 800; // maximum number of references for each urlhash
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public static final int lowcachedivisor = 900;
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public static final long targetFileSize = 64 * 1024 * 1024; // 256 MB
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public static final int writeBufferSize = 4 * 1024 * 1024;
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public static final String UrlDbName = "text.urlmd";
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public static final String termIndexName = "text.index";
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public static final String citationIndexName = "citation.index";
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// the reference factory
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public static final ReferenceFactory<WordReference> wordReferenceFactory = new WordReferenceFactory();
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public static final ReferenceFactory<CitationReference> citationReferenceFactory = new CitationReferenceFactory();
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public static final ByteOrder wordOrder = Base64Order.enhancedCoder;
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private final Log log;
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private final File segmentPath;
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protected final Fulltext fulltext;
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protected IndexCell<WordReference> termIndex;
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protected IndexCell<CitationReference> urlCitationIndex;
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protected boolean writeWebgraph;
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/**
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* create a new Segment
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* @param log
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* @param segmentPath that should be the path ponting to the directory "SEGMENT"
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* @param collectionSchema
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*/
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public Segment(final Log log, final File segmentPath,
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final CollectionConfiguration collectionConfiguration, final WebgraphConfiguration webgraphConfiguration) {
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log.logInfo("Initializing Segment '" + segmentPath + ".");
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this.log = log;
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this.segmentPath = segmentPath;
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// create LURL-db
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this.fulltext = new Fulltext(segmentPath, collectionConfiguration, webgraphConfiguration);
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this.termIndex = null;
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this.urlCitationIndex = null;
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this.writeWebgraph = false;
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}
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public void writeWebgraph(boolean check) {
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this.writeWebgraph = check;
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}
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public boolean connectedRWI() {
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return this.termIndex != null;
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}
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public void connectRWI(final int entityCacheMaxSize, final long maxFileSize) throws IOException {
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if (this.termIndex != null) return;
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this.termIndex = new IndexCell<WordReference>(
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new File(this.segmentPath, "default"),
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termIndexName,
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wordReferenceFactory,
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wordOrder,
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Word.commonHashLength,
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entityCacheMaxSize,
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targetFileSize,
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maxFileSize,
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writeBufferSize);
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}
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public void disconnectRWI() {
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if (this.termIndex == null) return;
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this.termIndex.close();
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this.termIndex = null;
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}
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public boolean connectedCitation() {
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return this.urlCitationIndex != null;
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}
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public void connectCitation(final int entityCacheMaxSize, final long maxFileSize) throws IOException {
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if (this.urlCitationIndex != null) return;
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this.urlCitationIndex = new IndexCell<CitationReference>(
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new File(this.segmentPath, "default"),
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citationIndexName,
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citationReferenceFactory,
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wordOrder,
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Word.commonHashLength,
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entityCacheMaxSize,
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targetFileSize,
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maxFileSize,
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writeBufferSize);
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}
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public void disconnectCitation() {
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if (this.urlCitationIndex == null) return;
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this.urlCitationIndex.close();
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this.urlCitationIndex = null;
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}
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public void connectUrlDb(final boolean useTailCache, final boolean exceed134217727) {
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this.fulltext.connectUrlDb(UrlDbName, useTailCache, exceed134217727);
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}
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public Fulltext fulltext() {
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return this.fulltext;
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}
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public IndexCell<WordReference> termIndex() {
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return this.termIndex;
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}
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public IndexCell<CitationReference> urlCitation() {
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return this.urlCitationIndex;
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}
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/**
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* compute the click level using the citation reference database
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* @param citations the citation database
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* @param searchhash the hash of the url to be checked
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* @return the clickdepth level or 999 if the root url cannot be found or a recursion limit is reached
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* @throws IOException
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*/
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public int getClickDepth(final DigestURI url) throws IOException {
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final byte[] searchhash = url.hash();
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RowHandleSet rootCandidates = url.getPossibleRootHashes();
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RowHandleSet ignore = new RowHandleSet(URIMetadataRow.rowdef.primaryKeyLength, URIMetadataRow.rowdef.objectOrder, 100); // a set of urlhashes to be ignored. This is generated from all hashes that are seen during recursion to prevent enless loops
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RowHandleSet levelhashes = new RowHandleSet(URIMetadataRow.rowdef.primaryKeyLength, URIMetadataRow.rowdef.objectOrder, 1); // all hashes of a clickdepth. The first call contains the target hash only and therefore just one entry
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try {levelhashes.put(searchhash);} catch (SpaceExceededException e) {throw new IOException(e);}
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int leveldepth = 0; // the recursion depth and therefore the result depth-1. Shall be 0 for the first call
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final byte[] hosthash = new byte[6]; // the host of the url to be checked
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System.arraycopy(searchhash, 6, hosthash, 0, 6);
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long timeout = System.currentTimeMillis() + 10000;
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for (int maxdepth = 0; maxdepth < 10 && System.currentTimeMillis() < timeout; maxdepth++) {
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RowHandleSet checknext = new RowHandleSet(URIMetadataRow.rowdef.primaryKeyLength, URIMetadataRow.rowdef.objectOrder, 100);
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// loop over all hashes at this clickdepth; the first call to this loop should contain only one hash and a leveldepth = 0
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checkloop: for (byte[] urlhash: levelhashes) {
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// get all the citations for this url and iterate
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ReferenceContainer<CitationReference> references = this.urlCitationIndex.get(urlhash, null);
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if (references == null || references.size() == 0) continue checkloop; // don't know
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Iterator<CitationReference> i = references.entries();
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nextloop: while (i.hasNext()) {
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CitationReference ref = i.next();
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if (ref == null) continue nextloop;
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byte[] u = ref.urlhash();
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// check ignore
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if (ignore.has(u)) continue nextloop;
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// check if this is from the same host
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if (!ByteBuffer.equals(u, 6, hosthash, 0, 6)) continue nextloop;
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// check if the url is a root url
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if (rootCandidates.has(u)) {
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return leveldepth + 1;
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}
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// step to next depth level
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try {checknext.put(u);} catch (SpaceExceededException e) {}
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try {ignore.put(u);} catch (SpaceExceededException e) {}
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}
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}
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leveldepth++;
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levelhashes = checknext;
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}
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return 999;
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}
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public long URLCount() {
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return this.fulltext.collectionSize();
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}
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public long RWICount() {
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if (this.termIndex == null) return 0;
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return this.termIndex.sizesMax();
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}
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public int RWIBufferCount() {
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if (this.termIndex == null) return 0;
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return this.termIndex.getBufferSize();
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}
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/**
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* get a guess about the word count. This is only a guess because it uses the term index if present and this index may be
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* influenced by index transmission processes in its statistic word distribution. However, it can be a hint for heuristics
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* which use the word count. Please do NOT use this if the termIndex is not present because it otherwise uses the solr index
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* which makes it painfull slow.
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* @param word
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* @return the number of references for this word.
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*/
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public int getWordCountGuess(String word) {
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if (word == null || word.indexOf(':') >= 0 || word.indexOf(' ') >= 0 || word.indexOf('/') >= 0) return 0;
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if (this.termIndex != null) {
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int count = this.termIndex.count(Word.word2hash(word));
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if (count > 0) return count;
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}
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try {
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return (int) this.fulltext.getDefaultConnector().getCountByQuery(CollectionSchema.text_t.getSolrFieldName() + ":\"" + word + "\"");
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} catch (Throwable e) {
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Log.logException(e);
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return 0;
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}
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}
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public boolean exists(final String urlhash) {
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return this.fulltext.exists(urlhash);
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}
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/**
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* discover all urls that start with a given url stub
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* @param stub
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* @return an iterator for all matching urls
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*/
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public Iterator<DigestURI> urlSelector(final MultiProtocolURI stub, final long maxtime, final int maxcount) {
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final BlockingQueue<SolrDocument> docQueue;
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final String urlstub;
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if (stub == null) {
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docQueue = this.fulltext.getDefaultConnector().concurrentDocumentsByQuery("*:*", 0, Integer.MAX_VALUE, maxtime, maxcount, CollectionSchema.id.getSolrFieldName(), CollectionSchema.sku.getSolrFieldName());
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urlstub = null;
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} else {
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final String host = stub.getHost();
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String hh = DigestURI.hosthash(host);
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docQueue = this.fulltext.getDefaultConnector().concurrentDocumentsByQuery(CollectionSchema.host_id_s + ":\"" + hh + "\"", 0, Integer.MAX_VALUE, maxtime, maxcount, CollectionSchema.id.getSolrFieldName(), CollectionSchema.sku.getSolrFieldName());
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urlstub = stub.toNormalform(true);
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}
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// now filter the stub from the iterated urls
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return new LookAheadIterator<DigestURI>() {
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@Override
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protected DigestURI next0() {
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while (true) {
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SolrDocument doc;
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try {
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doc = docQueue.take();
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} catch (InterruptedException e) {
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Log.logException(e);
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return null;
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}
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if (doc == null || doc == AbstractSolrConnector.POISON_DOCUMENT) return null;
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String u = (String) doc.getFieldValue(CollectionSchema.sku.getSolrFieldName());
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String id = (String) doc.getFieldValue(CollectionSchema.id.getSolrFieldName());
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DigestURI url;
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try {
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url = new DigestURI(u, ASCII.getBytes(id));
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} catch (MalformedURLException e) {
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continue;
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}
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if (urlstub == null || u.startsWith(urlstub)) return url;
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}
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}
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};
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}
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public void clear() {
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try {
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if (this.termIndex != null) this.termIndex.clear();
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if (this.fulltext != null) this.fulltext.clearURLIndex();
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if (this.fulltext != null) this.fulltext.clearLocalSolr();
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if (this.fulltext != null) this.fulltext.clearRemoteSolr();
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if (this.urlCitationIndex != null) this.urlCitationIndex.clear();
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} catch (final IOException e) {
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Log.logException(e);
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}
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}
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public void clearCache() {
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if (this.urlCitationIndex != null) this.urlCitationIndex.clearCache();
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if (this.termIndex != null) this.termIndex.clearCache();
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this.fulltext.clearCache();
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}
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public File getLocation() {
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return this.segmentPath;
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}
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private int addCitationIndex(final DigestURI url, final Date urlModified, final Map<DigestURI, Properties> anchors) {
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if (anchors == null) return 0;
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int refCount = 0;
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// iterate over all outgoing links, this will create a context for those links
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final byte[] urlhash = url.hash();
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final long urldate = urlModified.getTime();
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for (Map.Entry<DigestURI, Properties> anchorEntry: anchors.entrySet()) {
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DigestURI anchor = anchorEntry.getKey();
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byte[] refhash = anchor.hash();
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//System.out.println("*** addCitationIndex: urlhash = " + ASCII.String(urlhash) + ", refhash = " + ASCII.String(refhash) + ", urldate = " + urlModified.toString());
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if (this.urlCitationIndex != null) try {
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this.urlCitationIndex.add(refhash, new CitationReference(urlhash, urldate));
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} catch (final Exception e) {
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Log.logException(e);
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}
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refCount++;
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}
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return refCount;
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}
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public synchronized void close() {
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if (this.termIndex != null) this.termIndex.close();
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if (this.fulltext != null) this.fulltext.close();
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if (this.urlCitationIndex != null) this.urlCitationIndex.close();
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}
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private static String votedLanguage(
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final DigestURI url,
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final String urlNormalform,
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final Document document,
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final Condenser condenser) {
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// do a identification of the language
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String language = condenser.language(); // this is a statistical analysation of the content: will be compared with other attributes
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final String bymetadata = document.dc_language(); // the languageByMetadata may return null if there was no declaration
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if (language == null) {
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// no statistics available, we take either the metadata (if given) or the TLD
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language = (bymetadata == null) ? url.language() : bymetadata;
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} else {
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if (bymetadata == null) {
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// two possible results: compare and report conflicts
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if (!language.equals(url.language())) {
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// see if we have a hint in the url that the statistic was right
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final String u = urlNormalform.toLowerCase();
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if (!u.contains("/" + language + "/") && !u.contains("/" + ISO639.country(language).toLowerCase() + "/")) {
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// no confirmation using the url, use the TLD
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language = url.language();
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} else {
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// this is a strong hint that the statistics was in fact correct
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}
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}
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} else {
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// here we have three results: we can do a voting
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if (language.equals(bymetadata)) {
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//if (log.isFine()) log.logFine("LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFIRMED - METADATA IDENTICAL: " + language);
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} else if (language.equals(url.language())) {
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//if (log.isFine()) log.logFine("LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFIRMED - TLD IS IDENTICAL: " + language);
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} else if (bymetadata.equals(url.language())) {
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//if (log.isFine()) log.logFine("LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFLICTING: " + language + " BUT METADATA AND TLD ARE IDENTICAL: " + bymetadata + ")");
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language = bymetadata;
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} else {
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//if (log.isFine()) log.logFine("LANGUAGE-BY-STATISTICS: " + entry.url() + " CONFLICTING: ALL DIFFERENT! statistic: " + language + ", metadata: " + bymetadata + ", TLD: + " + entry.url().language() + ". taking metadata.");
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language = bymetadata;
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}
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}
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}
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return language;
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}
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public void storeRWI(final ReferenceContainer<WordReference> wordContainer) throws IOException, SpaceExceededException {
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if (this.termIndex != null) this.termIndex.add(wordContainer);
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}
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public void storeRWI(final byte[] termHash, final WordReference entry) throws IOException, SpaceExceededException {
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if (this.termIndex != null) this.termIndex.add(termHash, entry);
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}
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public SolrInputDocument storeDocument(
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final DigestURI url,
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final DigestURI referrerURL,
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final String[] collections,
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final ResponseHeader responseHeader,
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final Document document,
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final Condenser condenser,
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final SearchEvent searchEvent,
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final String sourceName,
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final boolean storeToRWI
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) {
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final long startTime = System.currentTimeMillis();
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// DO A SOFT/HARD COMMIT IF NEEDED
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if (MemoryControl.shortStatus()) {
|
|
// do a 'hard' commit to flush index caches
|
|
this.fulltext.commit(false);
|
|
} else {
|
|
if (
|
|
(this.fulltext.getDefaultConfiguration().contains(CollectionSchema.exact_signature_l) && this.fulltext.getDefaultConfiguration().contains(CollectionSchema.exact_signature_unique_b)) ||
|
|
(this.fulltext.getDefaultConfiguration().contains(CollectionSchema.fuzzy_signature_l) && this.fulltext.getDefaultConfiguration().contains(CollectionSchema.fuzzy_signature_unique_b)) ||
|
|
this.fulltext.getDefaultConfiguration().contains(CollectionSchema.title_unique_b) ||
|
|
this.fulltext.getDefaultConfiguration().contains(CollectionSchema.description_unique_b)
|
|
) {
|
|
this.fulltext.getDefaultConnector().commit(true); // make sure that we have latest information for the postprocessing steps
|
|
}
|
|
}
|
|
|
|
// CREATE INDEX
|
|
|
|
// load some document metadata
|
|
final Date loadDate = new Date();
|
|
final String id = ASCII.String(url.hash());
|
|
final String dc_title = document.dc_title();
|
|
final String urlNormalform = url.toNormalform(true);
|
|
final String language = votedLanguage(url, urlNormalform, document, condenser); // identification of the language
|
|
|
|
// STORE URL TO LOADED-URL-DB
|
|
Date modDate = responseHeader == null ? new Date() : responseHeader.lastModified();
|
|
if (modDate.getTime() > loadDate.getTime()) modDate = loadDate;
|
|
char docType = Response.docType(document.dc_format());
|
|
|
|
// CREATE SOLR DOCUMENT
|
|
final CollectionConfiguration.SolrVector vector = this.fulltext.getDefaultConfiguration().yacy2solr(id, collections, responseHeader, document, condenser, referrerURL, language, urlCitationIndex, this.fulltext.getWebgraphConfiguration());
|
|
|
|
// FIND OUT IF THIS IS A DOUBLE DOCUMENT
|
|
String hostid = url.hosthash();
|
|
for (CollectionSchema[] checkfields: new CollectionSchema[][]{
|
|
{CollectionSchema.exact_signature_l, CollectionSchema.exact_signature_unique_b},
|
|
{CollectionSchema.fuzzy_signature_l, CollectionSchema.fuzzy_signature_unique_b}}) {
|
|
CollectionSchema checkfield = checkfields[0];
|
|
CollectionSchema uniquefield = checkfields[1];
|
|
if (this.fulltext.getDefaultConfiguration().contains(checkfield) && this.fulltext.getDefaultConfiguration().contains(uniquefield)) {
|
|
// lookup the document with the same signature
|
|
long signature = ((Long) vector.getField(checkfield.getSolrFieldName()).getValue()).longValue();
|
|
try {
|
|
if (this.fulltext.getDefaultConnector().existsByQuery(CollectionSchema.host_id_s + ":\"" + hostid + "\" AND " + checkfield.getSolrFieldName() + ":\"" + Long.toString(signature) + "\"")) {
|
|
// change unique attribut in content
|
|
vector.setField(uniquefield.getSolrFieldName(), false);
|
|
}
|
|
} catch (IOException e) {}
|
|
}
|
|
}
|
|
|
|
// CHECK IF TITLE AND DESCRIPTION IS UNIQUE (this is by default not switched on)
|
|
if (this.fulltext.getDefaultConfiguration().contains(CollectionSchema.host_id_s)) {
|
|
uniquecheck: for (CollectionSchema[] checkfields: new CollectionSchema[][]{
|
|
{CollectionSchema.title, CollectionSchema.title_exact_signature_l, CollectionSchema.title_unique_b},
|
|
{CollectionSchema.description, CollectionSchema.description_exact_signature_l, CollectionSchema.description_unique_b}}) {
|
|
CollectionSchema checkfield = checkfields[0];
|
|
CollectionSchema signaturefield = checkfields[1];
|
|
CollectionSchema uniquefield = checkfields[2];
|
|
if (this.fulltext.getDefaultConfiguration().contains(checkfield) && this.fulltext.getDefaultConfiguration().contains(signaturefield) && this.fulltext.getDefaultConfiguration().contains(uniquefield)) {
|
|
// lookup in the index within the same hosts for the same title or description
|
|
//String checkstring = checkfield == CollectionSchema.title ? document.dc_title() : document.dc_description();
|
|
Long checkhash = (Long) vector.getFieldValue(signaturefield.getSolrFieldName());
|
|
if (checkhash == null) {
|
|
vector.setField(uniquefield.getSolrFieldName(), false);
|
|
continue uniquecheck;
|
|
}
|
|
try {
|
|
if (this.fulltext.getDefaultConnector().existsByQuery(CollectionSchema.host_id_s + ":\"" + hostid + "\" AND " + signaturefield.getSolrFieldName() + ":\"" + checkhash.toString() + "\"")) {
|
|
// switch unique attribute in new document
|
|
vector.setField(uniquefield.getSolrFieldName(), false);
|
|
// switch attribute also in all existing documents (which should be exactly only one!)
|
|
SolrDocumentList docs = this.fulltext.getDefaultConnector().getDocumentListByQuery(CollectionSchema.host_id_s + ":\"" + hostid + "\" AND " + signaturefield.getSolrFieldName() + ":\"" + checkhash.toString() + "\" AND " + uniquefield.getSolrFieldName() + ":true", 0, 1000);
|
|
for (SolrDocument doc: docs) {
|
|
SolrInputDocument sid = this.fulltext.getDefaultConfiguration().toSolrInputDocument(doc);
|
|
sid.setField(uniquefield.getSolrFieldName(), false);
|
|
this.fulltext.getDefaultConnector().add(sid);
|
|
}
|
|
} else {
|
|
vector.setField(uniquefield.getSolrFieldName(), true);
|
|
}
|
|
} catch (IOException e) {}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ENRICH DOCUMENT WITH RANKING INFORMATION
|
|
if (this.connectedCitation()) {
|
|
this.fulltext.getDefaultConfiguration().postprocessing_references(this, null, vector, url, null);
|
|
}
|
|
// STORE TO SOLR
|
|
String error = null;
|
|
tryloop: for (int i = 0; i < 20; i++) {
|
|
try {
|
|
error = null;
|
|
this.fulltext.putDocument(vector);
|
|
break tryloop;
|
|
} catch ( final IOException e ) {
|
|
error = "failed to send " + urlNormalform + " to solr: " + e.getMessage();
|
|
Log.logWarning("SOLR", error);
|
|
if (i == 10) this.fulltext.commit(false);
|
|
try {Thread.sleep(1000);} catch (InterruptedException e1) {}
|
|
continue tryloop;
|
|
}
|
|
}
|
|
if (this.writeWebgraph) {
|
|
tryloop: for (int i = 0; i < 20; i++) {
|
|
try {
|
|
error = null;
|
|
this.fulltext.putEdges(vector.getWebgraphDocuments());
|
|
break tryloop;
|
|
} catch ( final IOException e ) {
|
|
error = "failed to send " + urlNormalform + " to solr: " + e.getMessage();
|
|
Log.logWarning("SOLR", error);
|
|
if (i == 10) this.fulltext.commit(false);
|
|
try {Thread.sleep(1000);} catch (InterruptedException e1) {}
|
|
continue tryloop;
|
|
}
|
|
}
|
|
}
|
|
if (error != null) {
|
|
Log.logSevere("SOLR", error + ", PLEASE REPORT TO bugs.yacy.net");
|
|
//Switchboard.getSwitchboard().pauseCrawlJob(SwitchboardConstants.CRAWLJOB_LOCAL_CRAWL, error);
|
|
//Switchboard.getSwitchboard().pauseCrawlJob(SwitchboardConstants.CRAWLJOB_REMOTE_TRIGGERED_CRAWL, error);
|
|
}
|
|
final long storageEndTime = System.currentTimeMillis();
|
|
|
|
// STORE PAGE INDEX INTO WORD INDEX DB
|
|
int outlinksSame = document.inboundLinks().size();
|
|
int outlinksOther = document.outboundLinks().size();
|
|
final int urlLength = urlNormalform.length();
|
|
final int urlComps = MultiProtocolURI.urlComps(url.toString()).length;
|
|
|
|
// create a word prototype which is re-used for all entries
|
|
if ((this.termIndex != null && storeToRWI) || searchEvent != null) {
|
|
final int len = (document == null) ? urlLength : document.dc_title().length();
|
|
final WordReferenceRow ientry = new WordReferenceRow(
|
|
url.hash(),
|
|
urlLength, urlComps, len,
|
|
condenser.RESULT_NUMB_WORDS,
|
|
condenser.RESULT_NUMB_SENTENCES,
|
|
modDate.getTime(),
|
|
System.currentTimeMillis(),
|
|
UTF8.getBytes(language),
|
|
docType,
|
|
outlinksSame, outlinksOther);
|
|
|
|
// iterate over all words of content text
|
|
Word wprop = null;
|
|
byte[] wordhash;
|
|
String word;
|
|
for (Map.Entry<String, Word> wentry: condenser.words().entrySet()) {
|
|
word = wentry.getKey();
|
|
wprop = wentry.getValue();
|
|
assert (wprop.flags != null);
|
|
ientry.setWord(wprop);
|
|
wordhash = Word.word2hash(word);
|
|
if (this.termIndex != null && storeToRWI) try {
|
|
this.termIndex.add(wordhash, ientry);
|
|
} catch (final Exception e) {
|
|
Log.logException(e);
|
|
}
|
|
|
|
// during a search event it is possible that a heuristic is used which aquires index
|
|
// data during search-time. To transfer indexed data directly to the search process
|
|
// the following lines push the index data additionally to the search process
|
|
// this is done only for searched words
|
|
if (searchEvent != null && !searchEvent.query.getQueryGoal().getExcludeHashes().has(wordhash) && searchEvent.query.getQueryGoal().getIncludeHashes().has(wordhash)) {
|
|
// if the page was added in the context of a heuristic this shall ensure that findings will fire directly into the search result
|
|
ReferenceContainer<WordReference> container;
|
|
try {
|
|
container = ReferenceContainer.emptyContainer(Segment.wordReferenceFactory, wordhash, 1);
|
|
container.add(ientry);
|
|
searchEvent.addRWIs(container, true, sourceName, 1, 5000);
|
|
} catch (final SpaceExceededException e) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if (searchEvent != null) searchEvent.addFinalize();
|
|
|
|
// assign the catchall word
|
|
ientry.setWord(wprop == null ? catchallWord : wprop); // we use one of the word properties as template to get the document characteristics
|
|
if (this.termIndex != null) try {
|
|
this.termIndex.add(catchallHash, ientry);
|
|
} catch (final Exception e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
|
|
// STORE PAGE REFERENCES INTO CITATION INDEX
|
|
final int refs = addCitationIndex(url, modDate, document.getAnchors());
|
|
|
|
// finish index time
|
|
final long indexingEndTime = System.currentTimeMillis();
|
|
|
|
if (this.log.isInfo()) {
|
|
this.log.logInfo("*Indexed " + condenser.words().size() + " words in URL " + url +
|
|
" [" + id + "]" +
|
|
"\n\tDescription: " + dc_title +
|
|
"\n\tMimeType: " + document.dc_format() + " | Charset: " + document.getCharset() + " | " +
|
|
"Size: " + document.getTextLength() + " bytes | " +
|
|
"Anchors: " + refs +
|
|
"\n\tLinkStorageTime: " + (storageEndTime - startTime) + " ms | " +
|
|
"indexStorageTime: " + (indexingEndTime - storageEndTime) + " ms");
|
|
}
|
|
|
|
// finished
|
|
return vector;
|
|
}
|
|
|
|
public void removeAllUrlReferences(final HandleSet urls, final LoaderDispatcher loader, final CacheStrategy cacheStrategy) {
|
|
for (final byte[] urlhash: urls) removeAllUrlReferences(urlhash, loader, cacheStrategy);
|
|
}
|
|
|
|
/**
|
|
* find all the words in a specific resource and remove the url reference from every word index
|
|
* finally, delete the url entry
|
|
* @param urlhash the hash of the url that shall be removed
|
|
* @param loader
|
|
* @param cacheStrategy
|
|
* @return number of removed words
|
|
*/
|
|
public int removeAllUrlReferences(final byte[] urlhash, final LoaderDispatcher loader, final CacheStrategy cacheStrategy) {
|
|
|
|
if (urlhash == null) return 0;
|
|
// determine the url string
|
|
final DigestURI url = fulltext().getURL(urlhash);
|
|
if (url == null) return 0;
|
|
|
|
try {
|
|
// parse the resource
|
|
final Document document = Document.mergeDocuments(url, null, loader.loadDocuments(loader.request(url, true, false), cacheStrategy, Integer.MAX_VALUE, null, CrawlQueues.queuedMinLoadDelay));
|
|
if (document == null) {
|
|
// delete just the url entry
|
|
fulltext().remove(urlhash);
|
|
return 0;
|
|
}
|
|
// get the word set
|
|
Set<String> words = null;
|
|
words = new Condenser(document, true, true, null, null, false).words().keySet();
|
|
|
|
// delete all word references
|
|
int count = 0;
|
|
if (words != null) count = termIndex().remove(Word.words2hashesHandles(words), urlhash);
|
|
|
|
// finally delete the url entry itself
|
|
fulltext().remove(urlhash);
|
|
return count;
|
|
} catch (final Parser.Failure e) {
|
|
return 0;
|
|
} catch (final IOException e) {
|
|
Log.logException(e);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
}
|