// Fulltext.java
// (C) 2006 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
// first published 2006 as part of 'plasmaCrawlLURL.java' on http://yacy.net
//
// This is a part of YaCy, a peer-to-peer based web search engine
//
// LICENSE
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package net.yacy.search.index;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Pattern;
import net.yacy.cora.date.GenericFormatter;
import net.yacy.cora.date.ISO8601Formatter;
import net.yacy.cora.document.encoding.ASCII;
import net.yacy.cora.document.id.DigestURL;
import net.yacy.cora.document.id.MultiProtocolURL;
import net.yacy.cora.federate.solr.connector.AbstractSolrConnector;
import net.yacy.cora.federate.solr.connector.EmbeddedSolrConnector;
import net.yacy.cora.federate.solr.connector.RemoteSolrConnector;
import net.yacy.cora.federate.solr.connector.ShardSelection;
import net.yacy.cora.federate.solr.connector.SolrConnector;
import net.yacy.cora.federate.solr.instance.EmbeddedInstance;
import net.yacy.cora.federate.solr.instance.InstanceMirror;
import net.yacy.cora.federate.solr.instance.RemoteInstance;
import net.yacy.cora.federate.solr.instance.ShardInstance;
import net.yacy.cora.protocol.HeaderFramework;
import net.yacy.cora.sorting.ReversibleScoreMap;
import net.yacy.cora.sorting.WeakPriorityBlockingQueue;
import net.yacy.cora.storage.ZIPReader;
import net.yacy.cora.storage.ZIPWriter;
import net.yacy.cora.util.ConcurrentLog;
import net.yacy.document.parser.html.CharacterCoding;
import net.yacy.kelondro.data.meta.URIMetadataNode;
import net.yacy.kelondro.data.meta.URIMetadataRow;
import net.yacy.kelondro.data.word.WordReferenceVars;
import net.yacy.kelondro.util.MemoryControl;
import net.yacy.search.Switchboard;
import net.yacy.search.schema.CollectionConfiguration;
import net.yacy.search.schema.CollectionSchema;
import net.yacy.search.schema.WebgraphConfiguration;
import net.yacy.search.schema.WebgraphSchema;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.SolrInputDocument;
import org.apache.solr.core.SolrInfoMBean;
import org.apache.lucene.util.Version;
public final class Fulltext {
private static final String SOLR_PATH = "solr_46"; // the number should be identical to the number in the property luceneMatchVersion in solrconfig.xml
private static final String SOLR_OLD_PATH[] = new String[]{"solr_36", "solr_40", "solr_44", "solr_45"};
// class objects
private final File segmentPath;
private final File archivePath;
private Export exportthread; // will have a export thread assigned if exporter is running
private InstanceMirror solrInstances;
private final CollectionConfiguration collectionConfiguration;
private final WebgraphConfiguration webgraphConfiguration;
private boolean writeWebgraph;
protected Fulltext(final File segmentPath, final File archivePath,
final CollectionConfiguration collectionConfiguration, final WebgraphConfiguration webgraphConfiguration) {
this.segmentPath = segmentPath;
this.archivePath = archivePath;
this.exportthread = null; // will have a export thread assigned if exporter is running
this.solrInstances = new InstanceMirror();
this.collectionConfiguration = collectionConfiguration;
this.webgraphConfiguration = webgraphConfiguration;
this.writeWebgraph = false;
}
public void setUseWebgraph(boolean check) {
this.writeWebgraph = check;
}
public boolean useWebgraph() {
return this.writeWebgraph;
}
public CollectionConfiguration getDefaultConfiguration() {
return this.collectionConfiguration;
}
public WebgraphConfiguration getWebgraphConfiguration() {
return this.webgraphConfiguration;
}
public boolean connectedLocalSolr() {
return this.solrInstances.isConnectedEmbedded();
}
public void connectLocalSolr() throws IOException {
File solrLocation = new File(this.segmentPath, SOLR_PATH);
// migrate old solr to new
for (String oldVersion: SOLR_OLD_PATH) {
File oldLocation = new File(this.segmentPath, oldVersion);
if (oldLocation.exists()) oldLocation.renameTo(solrLocation);
}
EmbeddedInstance localCollectionInstance = new EmbeddedInstance(new File(new File(Switchboard.getSwitchboard().appPath, "defaults"), "solr"), solrLocation, CollectionSchema.CORE_NAME, new String[]{CollectionSchema.CORE_NAME, WebgraphSchema.CORE_NAME});
Version luceneVersion = localCollectionInstance.getDefaultCore().getSolrConfig().getLuceneVersion("luceneMatchVersion");
String lvn = luceneVersion.name();
ConcurrentLog.info("Fulltext", "using lucene version " + lvn);
int p = lvn.indexOf('_');
assert SOLR_PATH.endsWith(lvn.substring(p)) : "luceneVersion = " + lvn + ", solrPath = " + SOLR_PATH + ", p = " + p + ", check defaults/solr/solrconfig.xml";
ConcurrentLog.info("Fulltext", "connected solr in " + solrLocation.toString() + ", lucene version " + lvn);
this.solrInstances.connectEmbedded(localCollectionInstance);
}
public void disconnectLocalSolr() {
this.solrInstances.disconnectEmbedded();
}
public boolean connectedRemoteSolr() {
return this.solrInstances.isConnectedRemote();
}
public void connectRemoteSolr(final ArrayList<RemoteInstance> instances, final boolean writeEnabled) {
this.solrInstances.connectRemote(new ShardInstance(instances, ShardSelection.Method.MODULO_HOST_MD5, writeEnabled));
}
public void disconnectRemoteSolr() {
this.solrInstances.disconnectRemote();
}
public EmbeddedSolrConnector getDefaultEmbeddedConnector() {
return this.solrInstances.getDefaultEmbeddedConnector();
}
public EmbeddedSolrConnector getEmbeddedConnector(String corename) {
return this.solrInstances.getEmbeddedConnector(corename);
}
public RemoteSolrConnector getDefaultRemoteSolrConnector() {
try {
return this.solrInstances.getDefaultRemoteConnector(true);
} catch (IOException e) {
return null;
}
}
public EmbeddedInstance getEmbeddedInstance() {
synchronized (this.solrInstances) {
if (this.solrInstances.isConnectedEmbedded()) return this.solrInstances.getEmbedded();
return null;
}
}
public SolrConnector getDefaultConnector() {
synchronized (this.solrInstances) {
return this.solrInstances.getDefaultMirrorConnector();
}
}
public SolrConnector getWebgraphConnector() {
if (!this.writeWebgraph) return null;
synchronized (this.solrInstances) {
return this.solrInstances.getGenericMirrorConnector(WebgraphSchema.CORE_NAME);
}
}
public Map<String, SolrInfoMBean> getSolrInfoBeans() {
EmbeddedSolrConnector esc = this.solrInstances.getDefaultEmbeddedConnector();
if (esc == null) return new HashMap<String, SolrInfoMBean>();
return esc.getSolrInfoBeans();
}
public int bufferSize() {
return this.solrInstances.bufferSize();
}
public void clearCaches() {
this.solrInstances.clearCaches();
}
public void clearLocalSolr() throws IOException {
if (this.exportthread != null) this.exportthread.interrupt();
synchronized (this.solrInstances) {
EmbeddedInstance instance = this.solrInstances.getEmbedded();
if (instance != null) {
for (String name: instance.getCoreNames()) {
this.solrInstances.getEmbeddedConnector(name).clear();
}
}
this.commit(false);
this.solrInstances.clearCaches();
}
}
public void clearRemoteSolr() throws IOException {
synchronized (this.solrInstances) {
ShardInstance instance = this.solrInstances.getRemote();
if (instance != null) {
for (String name: instance.getCoreNames()) {
this.solrInstances.getRemoteConnector(name).clear();
}
}
this.solrInstances.clearCaches();
}
}
/**
* get the size of the default index
* @return
*/
private long collectionSizeLastAccess = 0;
private long collectionSizeLastValue = 0;
public long collectionSize() {
long t = System.currentTimeMillis();
if (t - this.collectionSizeLastAccess < 1000) return this.collectionSizeLastValue;
long size = this.solrInstances.getDefaultMirrorConnector().getSize();
this.collectionSizeLastAccess = t;
this.collectionSizeLastValue = size;
return size;
}
/**
* get the size of the webgraph index
* @return
*/
public long webgraphSize() {
return this.writeWebgraph ? this.getWebgraphConnector().getSize() : 0;
}
public void close() {
try {
this.solrInstances.close();
} catch (Throwable e) {}
}
private long lastCommit = 0;
public void commit(boolean softCommit) {
long t = System.currentTimeMillis();
if (lastCommit + 10000 > t) return;
lastCommit = t;
getDefaultConnector().commit(softCommit);
if (this.writeWebgraph) getWebgraphConnector().commit(softCommit);
}
public DigestURL getURL(final String urlHashS) {
if (urlHashS == null || this.getDefaultConnector() == null) return null;
try {
SolrDocument doc = this.getDefaultConnector().getDocumentById(urlHashS, CollectionSchema.sku.getSolrFieldName());
Object u = doc == null ? null : doc.getFieldValue(CollectionSchema.sku.getSolrFieldName());
if (u == null) return null;
assert u instanceof String : "u = " + u.toString();
if (u instanceof String) return new DigestURL((String) u, ASCII.getBytes(urlHashS));
return null;
} catch (final IOException e) {
return null;
}
}
public URIMetadataNode getMetadata(final WeakPriorityBlockingQueue.Element<WordReferenceVars> element) {
if (element == null) return null;
WordReferenceVars wre = element.getElement();
if (wre == null) return null; // all time was already wasted in takeRWI to get another element
long weight = element.getWeight();
URIMetadataNode node = getMetadata(wre.urlhash(), wre, weight);
return node;
}
public URIMetadataNode getMetadata(final byte[] urlHash) {
if (urlHash == null) return null;
return getMetadata(urlHash, null, 0);
}
private URIMetadataNode getMetadata(final byte[] urlHash, final WordReferenceVars wre, final long weight) {
String u = ASCII.String(urlHash);
// get the metadata from Solr
try {
SolrDocument doc = this.getDefaultConnector().getDocumentById(u);
if (doc != null) {
return new URIMetadataNode(doc, wre, weight);
}
} catch (final IOException e) {
ConcurrentLog.logException(e);
}
return null;
}
public void putDocument(final SolrInputDocument doc) throws IOException {
SolrConnector connector = this.getDefaultConnector();
if (connector == null) return;
String id = (String) doc.getFieldValue(CollectionSchema.id.getSolrFieldName());
String url = (String) doc.getFieldValue(CollectionSchema.sku.getSolrFieldName());
ConcurrentLog.info("Fulltext", "indexing: " + id + " " + url);
try {
connector.add(doc);
} catch (final SolrException e) {
throw new IOException(e.getMessage(), e);
}
if (MemoryControl.shortStatus()) clearCaches();
}
public void putEdges(final Collection<SolrInputDocument> edges) throws IOException {
if (!this.useWebgraph()) return;
if (edges == null || edges.size() == 0) return;
try {
this.getWebgraphConnector().add(edges);
} catch (final SolrException e) {
throw new IOException(e.getMessage(), e);
}
if (MemoryControl.shortStatus()) clearCaches();
}
/**
* deprecated method to store document metadata, use Solr documents wherever possible
*/
public void putMetadata(final URIMetadataRow entry) throws IOException {
byte[] idb = entry.hash();
String id = ASCII.String(idb);
try {
// because node entries are richer than metadata entries we must check if they exist to prevent that they are overwritten
SolrDocument sd = this.getDefaultConnector().getDocumentById(id);
if (sd == null || (new URIMetadataNode(sd)).isOlder(entry)) {
putDocument(getDefaultConfiguration().metadata2solr(entry));
}
} catch (final SolrException e) {
throw new IOException(e.getMessage(), e);
}
if (MemoryControl.shortStatus()) clearCaches();
}
/**
* using a fragment of the url hash (6 bytes: bytes 6 to 11) it is possible to address all urls from a specific domain
* here such a fragment can be used to delete all these domains at once
* @param hosthash the hash of the host to be deleted
* @param freshdate either NULL or a date in the past which is the limit for deletion. Only documents older than this date are deleted
* @throws IOException
*/
public void deleteStaleDomainHashes(final Set<String> hosthashes, Date freshdate) {
// delete in solr
Date now = new Date();
deleteDomainWithConstraint(this.getDefaultConnector(), CollectionSchema.host_id_s.getSolrFieldName(), hosthashes,
(freshdate == null || freshdate.after(now)) ? null :
(CollectionSchema.load_date_dt.getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(freshdate) + "]"));
if (this.writeWebgraph) deleteDomainWithConstraint(this.getWebgraphConnector(), WebgraphSchema.source_host_id_s.getSolrFieldName(), hosthashes,
(freshdate == null || freshdate.after(now)) ? null :
(WebgraphSchema.load_date_dt.getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(freshdate) + "]"));
}
public void deleteStaleDomainNames(final Set<String> hostnames, Date freshdate) {
Date now = new Date();
deleteDomainWithConstraint(this.getDefaultConnector(), CollectionSchema.host_s.getSolrFieldName(), hostnames,
(freshdate == null || freshdate.after(now)) ? null :
(CollectionSchema.load_date_dt.getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(freshdate) + "]"));
if (this.writeWebgraph) deleteDomainWithConstraint(this.getWebgraphConnector(), WebgraphSchema.source_host_s.getSolrFieldName(), hostnames,
(freshdate == null || freshdate.after(now)) ? null :
(WebgraphSchema.load_date_dt.getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(freshdate) + "]"));
}
/**
* delete all documents within a domain that are registered as error document
* @param hosthashes
*/
public void deleteDomainErrors(final Set<String> hosthashes) {
deleteDomainWithConstraint(this.getDefaultConnector(), CollectionSchema.host_id_s.getSolrFieldName(), hosthashes, CollectionSchema.failreason_s.getSolrFieldName() + ":[* TO *]");
}
private static void deleteDomainWithConstraint(SolrConnector connector, String fieldname, final Set<String> hosthashes, String constraintQuery) {
if (hosthashes == null || hosthashes.size() == 0) return;
int subsetscount = 1 + (hosthashes.size() / 255); // if the list is too large, we get a "too many boolean clauses" exception
int c = 0;
@SuppressWarnings("unchecked")
List<String>[] subsets = new ArrayList[subsetscount];
for (int i = 0; i < subsetscount; i++) subsets[i] = new ArrayList<String>();
for (String hosthash: hosthashes) subsets[c++ % subsetscount].add(hosthash);
for (List<String> subset: subsets) {
try {
StringBuilder query = new StringBuilder();
for (String hosthash: subset) {
if (query.length() > 0) query.append(" OR ");
//query.append(CollectionSchema.host_id_s.getSolrFieldName()).append(":\"").append(hosthash).append(":\"");
query.append("({!raw f=").append(fieldname).append('}').append(hosthash).append(")");
}
if (constraintQuery == null) connector.deleteByQuery(query.toString()); else connector.deleteByQuery("(" + query.toString() + ") AND " + constraintQuery);
} catch (final IOException e) {
}
}
}
public void deleteOldDocuments(final long deltaToNow, final boolean loaddate) {
Date deleteageDate = new Date(System.currentTimeMillis() - deltaToNow);
final String collection1Query = (loaddate ? CollectionSchema.load_date_dt : CollectionSchema.last_modified).getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(deleteageDate) + "]";
final String webgraphQuery = (loaddate ? WebgraphSchema.load_date_dt : WebgraphSchema.last_modified).getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(deleteageDate) + "]";
try {
this.getDefaultConnector().deleteByQuery(collection1Query);
if (this.getWebgraphConnector() != null) this.getWebgraphConnector().deleteByQuery(webgraphQuery);
} catch (final IOException e) {
}
}
/**
* remove a full subpath from the index
* @param subpath the left path of the url; at least until the end of the host
* @param freshdate either NULL or a date in the past which is the limit for deletion. Only documents older than this date are deleted
* @param concurrently if true, then the method returnes immediately and runs concurrently
*/
public int remove(final String basepath, Date freshdate) {
DigestURL uri;
try {uri = new DigestURL(basepath);} catch (final MalformedURLException e) {return 0;}
final String host = uri.getHost();
final String collectionQuery = CollectionSchema.host_s.getSolrFieldName() + ":\"" + host + "\"" +
((freshdate != null && freshdate.before(new Date())) ? (" AND " + CollectionSchema.load_date_dt.getSolrFieldName() + ":[* TO " + ISO8601Formatter.FORMATTER.format(freshdate) + "]") : "");
final AtomicInteger count = new AtomicInteger(0);
final BlockingQueue<SolrDocument> docs = Fulltext.this.getDefaultConnector().concurrentDocumentsByQuery(collectionQuery, 0, 1000000, 600000, -1, CollectionSchema.id.getSolrFieldName(), CollectionSchema.sku.getSolrFieldName());
try {
SolrDocument doc;
while ((doc = docs.take()) != AbstractSolrConnector.POISON_DOCUMENT) {
String u = (String) doc.getFieldValue(CollectionSchema.sku.getSolrFieldName());
if (u.startsWith(basepath)) {
remove(ASCII.getBytes((String) doc.getFieldValue(CollectionSchema.id.getSolrFieldName())));
count.incrementAndGet();
}
}
if (count.get() > 0) Fulltext.this.commit(true);
} catch (final InterruptedException e) {}
return count.get();
}
/**
* remove a list of id's from the index
* @param deleteIDs a list of urlhashes; each denoting a document
* @param concurrently if true, then the method returnes immediately and runs concurrently
*/
public void remove(final Collection<String> deleteIDs) {
if (deleteIDs == null || deleteIDs.size() == 0) return;
try {
this.getDefaultConnector().deleteByIds(deleteIDs);
if (this.writeWebgraph) this.getWebgraphConnector().deleteByIds(deleteIDs);
} catch (final Throwable e) {
ConcurrentLog.logException(e);
}
}
public boolean remove(final byte[] urlHash) {
if (urlHash == null) return false;
try {
String id = ASCII.String(urlHash);
this.getDefaultConnector().deleteById(id);
if (this.writeWebgraph) this.getWebgraphConnector().deleteById(id);
} catch (final Throwable e) {
ConcurrentLog.logException(e);
}
return false;
}
/**
* get the load time of a resource.
* @param urlHash
* @return the time in milliseconds since epoch for the load time or -1 if the document does not exist
*/
public long getLoadTime(final String urlHash) {
if (urlHash == null) return -1l;
try {
return this.getDefaultConnector().getLoadTime(urlHash);
} catch (final Throwable e) {
ConcurrentLog.logException(e);
}
return -1l;
}
public String failReason(final String urlHash) throws IOException {
if (urlHash == null) return null;
SolrDocument doc = this.getDefaultConnector().getDocumentById(urlHash, CollectionSchema.failreason_s.getSolrFieldName());
Object reason = doc == null ? null : doc.getFieldValue(CollectionSchema.failreason_s.getSolrFieldName());
if (reason == null) return null;
return reason instanceof String && ((String) reason).length() == 0 ? null : (String) reason;
}
public List<File> dumpFiles() {
EmbeddedInstance esc = this.solrInstances.getEmbedded();
ArrayList<File> zips = new ArrayList<File>();
if (esc == null) {
ConcurrentLog.warn("Fulltext", "HOT DUMP selected solr0 == NULL, no dump list!");
return zips;
}
if (esc.getContainerPath() == null) {
ConcurrentLog.warn("Fulltext", "HOT DUMP selected solr0.getStoragePath() == NULL, no dump list!");
return zips;
}
if (this.archivePath == null) {
ConcurrentLog.warn("Fulltext", "HOT DUMP selected esc.getStoragePath().getParentFile() == NULL, no dump list!");
return zips;
}
ConcurrentLog.info("Fulltext", "HOT DUMP dump path = " + this.archivePath.toString());
for (String p: this.archivePath.list()) {
if (p.endsWith("zip")) zips.add(new File(this.archivePath, p));
}
return zips;
}
/**
* create a dump file from the current solr directory
* @return
*/
public File dumpSolr() {
EmbeddedInstance esc = this.solrInstances.getEmbedded();
File storagePath = esc.getContainerPath();
File zipOut = new File(this.archivePath, storagePath.getName() + "_" + GenericFormatter.SHORT_DAY_FORMATTER.format() + ".zip");
synchronized (this.solrInstances) {
this.disconnectLocalSolr();
this.solrInstances.close();
try {
ZIPWriter.zip(storagePath, zipOut);
} catch (final IOException e) {
ConcurrentLog.logException(e);
} finally {
this.solrInstances = new InstanceMirror();
try {
this.connectLocalSolr();
} catch (final IOException e) {
ConcurrentLog.logException(e);
}
}
}
return zipOut;
}
/**
* restore a solr dump to the current solr directory
* @param solrDumpZipFile
*/
public void restoreSolr(File solrDumpZipFile) {
EmbeddedInstance esc = this.solrInstances.getEmbedded();
File storagePath = esc.getContainerPath();
synchronized (this.solrInstances) {
this.disconnectLocalSolr();
this.solrInstances.close();
try {
ZIPReader.unzip(solrDumpZipFile, storagePath);
} catch (final IOException e) {
ConcurrentLog.logException(e);
} finally {
this.solrInstances = new InstanceMirror();
try {
this.connectLocalSolr();
} catch (final IOException e) {
ConcurrentLog.logException(e);
}
}
}
}
/**
* optimize solr (experimental to check resource management)
* @param size
*/
public void optimize(final int size) {
if (size < 1) return;
getDefaultConnector().optimize(size);
if (this.writeWebgraph) getWebgraphConnector().optimize(size);
}
/**
* reboot solr (experimental to check resource management)
*/
public void rebootSolr() {
synchronized (this.solrInstances) {
this.disconnectLocalSolr();
this.solrInstances.close();
this.solrInstances = new InstanceMirror();
try {
this.connectLocalSolr();
} catch (final IOException e) {
ConcurrentLog.logException(e);
}
}
}
// export methods
public Export export(final File f, final String filter, final String query, final int format, final boolean dom) {
if ((this.exportthread != null) && (this.exportthread.isAlive())) {
ConcurrentLog.warn("LURL-EXPORT", "cannot start another export thread, already one running");
return this.exportthread;
}
this.exportthread = new Export(f, filter, query, format, dom);
this.exportthread.start();
return this.exportthread;
}
public Export export() {
return this.exportthread;
}
public class Export extends Thread {
private final File f;
private final Pattern pattern;
private int count;
private String failure, query;
private final int format;
private final boolean dom;
private Export(final File f, final String filter, final String query, final int format, boolean dom) {
// format: 0=text, 1=html, 2=rss/xml
this.f = f;
this.pattern = filter == null ? null : Pattern.compile(filter);
this.query = query == null? "*:*" : query;
this.count = 0;
this.failure = null;
this.format = format;
this.dom = dom;
//if ((dom) && (format == 2)) dom = false;
}
@Override
public void run() {
try {
final File parentf = this.f.getParentFile();
if (parentf != null) parentf.mkdirs();
final PrintWriter pw = new PrintWriter(new BufferedOutputStream(new FileOutputStream(this.f)));
if (this.format == 1) {
pw.println("<html><head></head><body>");
}
if (this.format == 2) {
pw.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
pw.println("<?xml-stylesheet type='text/xsl' href='/yacysearch.xsl' version='1.0'?>");
pw.println("<rss version=\"2.0\" xmlns:yacy=\"http://www.yacy.net/\" xmlns:opensearch=\"http://a9.com/-/spec/opensearch/1.1/\" xmlns:atom=\"http://www.w3.org/2005/Atom\">");
pw.println("<channel>");
pw.println("<title>YaCy Peer-to-Peer - Web-Search URL Export</title>");
pw.println("<description></description>");
pw.println("<link>http://yacy.net</link>");
}
if (this.dom) {
Map<String, ReversibleScoreMap<String>> scores = Fulltext.this.getDefaultConnector().getFacets(this.query + " AND " + CollectionSchema.httpstatus_i.getSolrFieldName() + ":200", 100000000, CollectionSchema.host_s.getSolrFieldName());
ReversibleScoreMap<String> stats = scores.get(CollectionSchema.host_s.getSolrFieldName());
for (final String host: stats) {
if (this.pattern != null && !this.pattern.matcher(host).matches()) continue;
if (this.format == 0) pw.println(host);
if (this.format == 1) pw.println("<a href=\"http://" + host + "\">" + host + "</a><br>");
this.count++;
}
} else {
BlockingQueue<SolrDocument> docs = Fulltext.this.getDefaultConnector().concurrentDocumentsByQuery(this.query + " AND " + CollectionSchema.httpstatus_i.getSolrFieldName() + ":200", 0, 100000000, 10 * 60 * 60 * 1000, 100,
CollectionSchema.id.getSolrFieldName(), CollectionSchema.sku.getSolrFieldName(), CollectionSchema.title.getSolrFieldName(),
CollectionSchema.author.getSolrFieldName(), CollectionSchema.description_txt.getSolrFieldName(), CollectionSchema.size_i.getSolrFieldName(), CollectionSchema.last_modified.getSolrFieldName());
SolrDocument doc;
String url, hash, title, author, description;
Integer size;
Date date;
while ((doc = docs.take()) != AbstractSolrConnector.POISON_DOCUMENT) {
hash = getStringFrom(doc.getFieldValue(CollectionSchema.id.getSolrFieldName()));
url = getStringFrom(doc.getFieldValue(CollectionSchema.sku.getSolrFieldName()));
title = getStringFrom(doc.getFieldValue(CollectionSchema.title.getSolrFieldName()));
author = getStringFrom(doc.getFieldValue(CollectionSchema.author.getSolrFieldName()));
description = getStringFrom(doc.getFieldValue(CollectionSchema.description_txt.getSolrFieldName()));
size = (Integer) doc.getFieldValue(CollectionSchema.size_i.getSolrFieldName());
date = (Date) doc.getFieldValue(CollectionSchema.last_modified.getSolrFieldName());
if (this.pattern != null && !this.pattern.matcher(url).matches()) continue;
if (this.format == 0) {
pw.println(url);
}
if (this.format == 1) {
if (title != null) pw.println("<a href=\"" + MultiProtocolURL.escape(url) + "\">" + CharacterCoding.unicode2xml(title, true) + "</a>");
}
if (this.format == 2) {
pw.println("<item>");
if (title != null) pw.println("<title>" + CharacterCoding.unicode2xml(title, true) + "</title>");
pw.println("<link>" + MultiProtocolURL.escape(url) + "</link>");
if (author != null && !author.isEmpty()) pw.println("<author>" + CharacterCoding.unicode2xml(author, true) + "</author>");
if (description != null && !description.isEmpty()) pw.println("<description>" + CharacterCoding.unicode2xml(description, true) + "</description>");
if (date != null) pw.println("<pubDate>" + HeaderFramework.formatRFC1123(date) + "</pubDate>");
if (size != null) pw.println("<yacy:size>" + size.intValue() + "</yacy:size>");
pw.println("<guid isPermaLink=\"false\">" + hash + "</guid>");
pw.println("</item>");
}
this.count++;
}
}
if (this.format == 1) {
pw.println("</body></html>");
}
if (this.format == 2) {
pw.println("</channel>");
pw.println("</rss>");
}
pw.close();
} catch (final IOException e) {
ConcurrentLog.logException(e);
this.failure = e.getMessage();
} catch (final Exception e) {
ConcurrentLog.logException(e);
this.failure = e.getMessage();
}
// terminate process
}
public File file() {
return this.f;
}
public String failed() {
return this.failure;
}
public int count() {
return this.count;
}
@SuppressWarnings("unchecked")
private String getStringFrom(final Object o) {
if (o == null) return "";
if (o instanceof ArrayList) return ((ArrayList<String>) o).get(0);
return (String) o;
}
}
}