org.hibernate.search.backend.lucene.work.impl.OptimizeIndexLuceneWork.java Source code

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Here is the source code for org.hibernate.search.backend.lucene.work.impl.OptimizeIndexLuceneWork.java

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/*
 * Hibernate Search, full-text search for your domain model
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.search.backend.lucene.work.impl;

import java.io.IOException;
import java.lang.invoke.MethodHandles;
import java.util.concurrent.CompletableFuture;

import org.apache.lucene.index.IndexWriter;
import org.hibernate.search.backend.lucene.logging.impl.Log;
import org.hibernate.search.util.impl.common.Futures;
import org.hibernate.search.util.impl.common.LoggerFactory;

/**
 * @author Guillaume Smet
 */
public class OptimizeIndexLuceneWork extends AbstractLuceneWork<Long> {

    private static final Log log = LoggerFactory.make(Log.class, MethodHandles.lookup());

    public OptimizeIndexLuceneWork(String indexName) {
        super("optimizeIndex", indexName);
    }

    @Override
    public CompletableFuture<Long> execute(LuceneIndexWorkExecutionContext context) {
        // FIXME for now everything is blocking here, we need a non blocking wrapper on top of the IndexWriter
        return Futures.create(() -> commitIndex(context.getIndexWriter()));
    }

    private CompletableFuture<Long> commitIndex(IndexWriter indexWriter) {
        try {
            indexWriter.forceMerge(1);
            return CompletableFuture.completedFuture(indexWriter.commit());
        } catch (IOException e) {
            throw log.unableToCommitIndex(getEventContext(), e);
        }
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(getClass().getSimpleName()).append("[").append("type=")
                .append(workType).append(", indexName=").append(indexName).append("]");
        return sb.toString();
    }
}