Michael Peter Christen
8 years ago
parent
ce89492319
commit
6fe735945d
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@ -1,400 +0,0 @@
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/**
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* ConcurrentUpdateSolrConnector
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* Copyright 2013 by Michael Peter Christen
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* First released 28.04.2013 at http://yacy.net
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.cora.federate.solr.connector;
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import java.io.IOException;
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.concurrent.BlockingQueue;
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import net.yacy.cora.sorting.ReversibleScoreMap;
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import net.yacy.cora.storage.ARC;
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import net.yacy.cora.storage.ConcurrentARC;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.kelondro.data.word.Word;
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import net.yacy.kelondro.util.MemoryControl;
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import net.yacy.search.schema.CollectionSchema;
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import org.apache.solr.client.solrj.response.QueryResponse;
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import org.apache.solr.client.solrj.util.ClientUtils;
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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.SolrException;
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import org.apache.solr.common.SolrInputDocument;
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import org.apache.solr.common.params.ModifiableSolrParams;
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/**
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* The purpose of this connector is to provide a non-blocking interface to solr.
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* All time-consuming tasks like updates and deletions are done within a concurrent process
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* which is started for this class in the background.
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* To implement this, we introduce an id exist cache, a deletion id queue and a update document queue.
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*/
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public class ConcurrentUpdateSolrConnector implements SolrConnector {
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private final static long AUTOCOMMIT = 3000; // milliseconds
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private class CommitHandler extends Thread {
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@Override
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public void run() {
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try {
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while (ConcurrentUpdateSolrConnector.this.commitProcessRunning) {
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commitDocBuffer();
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try {Thread.sleep(AUTOCOMMIT);} catch (final InterruptedException e) {
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ConcurrentLog.logException(e);
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}
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}
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} finally {
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commitDocBuffer();
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}
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}
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}
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private SolrConnector connector;
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private ARC<String, LoadTimeURL> metadataCache;
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//private final ARH<String> missCache;
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private final LinkedHashMap<String, SolrInputDocument> docBuffer;
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private CommitHandler processHandler;
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private final int updateCapacity;
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private boolean commitProcessRunning;
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public ConcurrentUpdateSolrConnector(final SolrConnector connector, final int updateCapacity, final int idCacheCapacity, final int concurrency) {
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this.connector = connector;
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this.updateCapacity = updateCapacity;
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this.metadataCache = new ConcurrentARC<>(idCacheCapacity, concurrency);
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//this.missCache = new ConcurrentARH<>(idCacheCapacity, concurrency);
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this.docBuffer = new LinkedHashMap<>();
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this.processHandler = null;
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this.commitProcessRunning = true;
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ensureAliveProcessHandler();
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}
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@Override
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public int hashCode() {
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return this.connector.hashCode();
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}
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@Override
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public boolean equals(Object o) {
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return o instanceof ConcurrentUpdateSolrConnector && this.connector.equals(((ConcurrentUpdateSolrConnector) o).connector);
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}
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private void commitDocBuffer() {
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synchronized (this.docBuffer) {
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//System.out.println("*** commit of " + this.docBuffer.size() + " documents");
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//Thread.dumpStack();
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if (this.docBuffer.size() > 0) try {
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this.connector.add(this.docBuffer.values());
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} catch (final OutOfMemoryError e) {
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// clear and try again...
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clearCaches();
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try {
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this.connector.add(this.docBuffer.values());
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} catch (final IOException ee) {
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ConcurrentLog.logException(e);
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}
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} catch (final IOException e) {
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ConcurrentLog.logException(e);
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}
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this.docBuffer.clear();
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}
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}
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@Override
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public int bufferSize() {
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return this.docBuffer.size();
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}
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@Override
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public void clearCaches() {
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this.connector.clearCaches();
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this.metadataCache.clear();
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//this.missCache.clear();
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}
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private void updateCache(final String id, final LoadTimeURL md) {
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if (id == null) return;
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if (MemoryControl.shortStatus()) {
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this.metadataCache.clear();
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//this.missCache.clear();
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}
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this.metadataCache.put(id, md);
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//this.missCache.delete(id);
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}
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public void ensureAliveProcessHandler() {
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if (this.processHandler == null || !this.processHandler.isAlive()) {
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this.processHandler = new CommitHandler();
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this.processHandler.setName(this.getClass().getName() + "_ProcessHandler");
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this.processHandler.start();
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}
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}
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@Override
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public Iterator<String> iterator() {
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return this.connector.iterator();
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}
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@Override
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public long getSize() {
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return Math.max(this.metadataCache.size(), this.connector.getSize());
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}
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@Override
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public void commit(boolean softCommit) {
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ensureAliveProcessHandler();
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commitDocBuffer();
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this.connector.commit(softCommit);
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}
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@Override
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public void optimize(int maxSegments) {
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commitDocBuffer();
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this.connector.optimize(maxSegments);
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}
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@Override
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public int getSegmentCount() {
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return this.connector.getSegmentCount();
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}
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@Override
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public boolean isClosed() {
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return this.connector == null || this.connector.isClosed();
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}
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@Override
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public void close() {
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ensureAliveProcessHandler();
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this.commitProcessRunning = false;
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try {this.processHandler.join();} catch (final InterruptedException e) {}
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this.connector.close();
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this.metadataCache.clear();
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this.connector = null;
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this.metadataCache = null;
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}
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@Override
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public void clear() throws IOException {
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this.docBuffer.clear();
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this.connector.clear();
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this.metadataCache.clear();
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//this.missCache.clear();
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}
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@Override
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public synchronized void deleteById(String id) throws IOException {
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this.metadataCache.remove(id);
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//this.missCache.add(id);
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synchronized (this.docBuffer) {
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this.docBuffer.remove(id);
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}
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this.connector.deleteById(id);
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}
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@Override
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public synchronized void deleteByIds(Collection<String> ids) throws IOException {
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for (String id: ids) {
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this.metadataCache.remove(id);
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//this.missCache.add(id);
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}
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synchronized (this.docBuffer) {
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for (String id: ids) {
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this.docBuffer.remove(id);
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}
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}
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this.connector.deleteByIds(ids);
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}
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@Override
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public void deleteByQuery(final String querystring) throws IOException {
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commitDocBuffer();
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try {
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this.connector.deleteByQuery(querystring);
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this.metadataCache.clear();
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} catch (final IOException e) {
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ConcurrentLog.severe("ConcurrentUpdateSolrConnector", e.getMessage(), e);
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}
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}
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@Override
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public LoadTimeURL getLoadTimeURL(String id) throws IOException {
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//if (this.missCache.contains(id)) return null;
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LoadTimeURL md = this.metadataCache.get(id);
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if (md != null) {
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//System.out.println("*** metadata cache hit; metadataCache.size() = " + metadataCache.size());
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//Thread.dumpStack();
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return md;
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}
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SolrInputDocument doc = this.docBuffer.get(id);
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if (doc != null) {
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//System.out.println("*** docBuffer cache hit; docBuffer.size() = " + docBuffer.size());
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//Thread.dumpStack();
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return AbstractSolrConnector.getLoadTimeURL(doc);
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}
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md = this.connector.getLoadTimeURL(id);
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if (md == null) {/*this.missCache.add(id);*/ return null;}
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updateCache(id, md);
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return md;
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}
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@Override
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public void add(SolrInputDocument solrdoc) throws IOException, SolrException {
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String id = (String) solrdoc.getFieldValue(CollectionSchema.id.getSolrFieldName());
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updateCache(id, AbstractSolrConnector.getLoadTimeURL(solrdoc));
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ensureAliveProcessHandler();
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if (this.processHandler.isAlive()) {
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synchronized (this.docBuffer) {this.docBuffer.put(id, solrdoc);}
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} else {
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this.connector.add(solrdoc);
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}
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if (MemoryControl.shortStatus() || this.docBuffer.size() > this.updateCapacity) {
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commitDocBuffer();
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}
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}
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@Override
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public void add(Collection<SolrInputDocument> solrdocs) throws IOException, SolrException {
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ensureAliveProcessHandler();
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synchronized (this.docBuffer) {
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for (SolrInputDocument solrdoc: solrdocs) {
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String id = (String) solrdoc.getFieldValue(CollectionSchema.id.getSolrFieldName());
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updateCache(id, AbstractSolrConnector.getLoadTimeURL(solrdoc));
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if (this.processHandler.isAlive()) {
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this.docBuffer.put(id, solrdoc);
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} else {
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this.connector.add(solrdoc);
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}
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}
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}
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if (MemoryControl.shortStatus() || this.docBuffer.size() > this.updateCapacity) {
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commitDocBuffer();
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}
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}
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@Override
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public SolrDocument getDocumentById(final String id, String... fields) throws IOException {
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assert id.length() == Word.commonHashLength : "wrong id: " + id;
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//if (this.missCache.contains(id)) return null;
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SolrInputDocument idoc = this.docBuffer.get(id);
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if (idoc != null) {
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//System.out.println("*** docBuffer cache hit; docBuffer.size() = " + docBuffer.size());
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//Thread.dumpStack();
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return ClientUtils.toSolrDocument(idoc);
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}
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SolrDocument solrdoc = this.connector.getDocumentById(id, AbstractSolrConnector.ensureEssentialFieldsIncluded(fields));
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if (solrdoc == null) {
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//this.missCache.add(id);
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this.metadataCache.remove(id);
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} else {
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updateCache(id, AbstractSolrConnector.getLoadTimeURL(solrdoc));
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}
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return solrdoc;
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}
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@Override
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public QueryResponse getResponseByParams(ModifiableSolrParams query) throws IOException, SolrException {
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commitDocBuffer();
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return this.connector.getResponseByParams(query);
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}
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@Override
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public SolrDocumentList getDocumentListByParams(ModifiableSolrParams params) throws IOException, SolrException {
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commitDocBuffer();
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SolrDocumentList sdl = this.connector.getDocumentListByParams(params);
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for (SolrDocument doc: sdl) {
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String id = (String) doc.getFieldValue(CollectionSchema.id.getSolrFieldName());
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updateCache(id, AbstractSolrConnector.getLoadTimeURL(doc));
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}
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return sdl;
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}
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@Override
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public SolrDocumentList getDocumentListByQuery(String querystring, String sort, int offset, int count, String... fields) throws IOException, SolrException {
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commitDocBuffer();
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if (offset == 0 && count == 1 && querystring.startsWith("id:") &&
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((querystring.length() == 17 && querystring.charAt(3) == '"' && querystring.charAt(16) == '"') ||
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querystring.length() == 15)) {
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final SolrDocumentList list = new SolrDocumentList();
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SolrDocument doc = getDocumentById(querystring.charAt(3) == '"' ? querystring.substring(4, querystring.length() - 1) : querystring.substring(3), fields);
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list.add(doc);
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return list;
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}
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SolrDocumentList sdl = this.connector.getDocumentListByQuery(querystring, sort, offset, count, AbstractSolrConnector.ensureEssentialFieldsIncluded(fields));
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return sdl;
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}
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@Override
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public long getCountByQuery(String querystring) throws IOException {
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commitDocBuffer();
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return this.connector.getCountByQuery(querystring);
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}
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@Override
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public LinkedHashMap<String, ReversibleScoreMap<String>> getFacets(String query, int maxresults, String... fields) throws IOException {
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commitDocBuffer();
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return this.connector.getFacets(query, maxresults, fields);
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}
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@Override
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public BlockingQueue<SolrDocument> concurrentDocumentsByQuery(String querystring, String sort, int offset, int maxcount, long maxtime, int buffersize, final int concurrency, final boolean prefetchIDs, String... fields) {
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commitDocBuffer();
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return this.connector.concurrentDocumentsByQuery(querystring, sort, offset, maxcount, maxtime, buffersize, concurrency, prefetchIDs, fields);
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}
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@Override
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public BlockingQueue<SolrDocument> concurrentDocumentsByQueries(
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List<String> querystrings, String sort, int offset, int maxcount,
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long maxtime, int buffersize, int concurrency, boolean prefetchIDs,
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String... fields) {
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commitDocBuffer();
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return this.connector.concurrentDocumentsByQueries(querystrings, sort, offset, maxcount, maxtime, buffersize, concurrency, prefetchIDs, fields);
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}
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@Override
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public BlockingQueue<String> concurrentIDsByQuery(String querystring, String sort, int offset, int maxcount, long maxtime, int buffersize, final int concurrency) {
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commitDocBuffer();
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return this.connector.concurrentIDsByQuery(querystring, sort, offset, maxcount, maxtime, buffersize, concurrency);
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}
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@Override
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public BlockingQueue<String> concurrentIDsByQueries(
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List<String> querystrings, String sort, int offset, int maxcount,
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long maxtime, int buffersize, int concurrency) {
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commitDocBuffer();
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return this.connector.concurrentIDsByQueries(querystrings, sort, offset, maxcount, maxtime, buffersize, concurrency);
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}
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@Override
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public void update(final SolrInputDocument solrdoc) throws IOException, SolrException {
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commitDocBuffer();
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this.connector.update(solrdoc);
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}
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@Override
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public void update(final Collection<SolrInputDocument> solrdoc) throws IOException, SolrException {
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commitDocBuffer();
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this.connector.update(solrdoc);
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}
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}
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Reference in new issue