001/*
002 * (C) Copyright 2014 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo
018 */
019
020package org.nuxeo.elasticsearch.work;
021
022import static org.nuxeo.elasticsearch.ElasticSearchConstants.REINDEX_BUCKET_WRITE_PROPERTY;
023
024import java.util.ArrayList;
025import java.util.List;
026
027import org.apache.commons.logging.Log;
028import org.apache.commons.logging.LogFactory;
029import org.nuxeo.ecm.core.api.CoreSession;
030import org.nuxeo.ecm.core.api.DocumentLocation;
031import org.nuxeo.ecm.core.api.DocumentModel;
032import org.nuxeo.ecm.core.query.sql.NXQL;
033import org.nuxeo.ecm.core.work.api.Work;
034import org.nuxeo.elasticsearch.api.ElasticSearchIndexing;
035import org.nuxeo.elasticsearch.commands.IndexingCommand;
036import org.nuxeo.elasticsearch.commands.IndexingCommand.Type;
037import org.nuxeo.runtime.api.Framework;
038
039/**
040 * œ Worker to index a bucket of documents
041 *
042 * @since 7.1
043 */
044public class BucketIndexingWorker extends BaseIndexingWorker implements Work {
045    private static final Log log = LogFactory.getLog(BucketIndexingWorker.class);
046
047    private static final long serialVersionUID = -4665673026513796882L;
048
049    private static final String DEFAULT_BUCKET_SIZE = "50";
050
051    private final boolean warnAtEnd;
052
053    private final int documentCount;
054
055    public BucketIndexingWorker(String repositoryName, List<String> docIds, boolean warnAtEnd) {
056        setDocuments(repositoryName, docIds);
057        documentCount = docIds.size();
058        this.warnAtEnd = warnAtEnd;
059    }
060
061    @Override
062    public String getTitle() {
063        return " ElasticSearch bucket indexer size " + documentCount;
064    }
065
066    @Override
067    protected void doWork() {
068        ElasticSearchIndexing esi = Framework.getLocalService(ElasticSearchIndexing.class);
069        openSystemSession();
070        int bucketSize = Math.min(documentCount, getBucketSize());
071        List<String> ids = new ArrayList<>(bucketSize);
072        for (DocumentLocation doc : getDocuments()) {
073            ids.add(doc.getIdRef().value);
074            if ((ids.size() % bucketSize) == 0) {
075                esi.indexNonRecursive(getIndexingCommands(session, ids));
076                ids.clear();
077            }
078        }
079        if (!ids.isEmpty()) {
080            esi.indexNonRecursive(getIndexingCommands(session, ids));
081            ids.clear();
082        }
083        if (warnAtEnd) {
084            log.warn(String.format("Re-indexing job: %s completed.", getSchedulePath().getParentPath()));
085        }
086    }
087
088    private List<IndexingCommand> getIndexingCommands(CoreSession session, List<String> ids) {
089        List<IndexingCommand> ret = new ArrayList<>(ids.size());
090        for (DocumentModel doc : fetchDocuments(session, ids)) {
091            IndexingCommand cmd = new IndexingCommand(doc, Type.INSERT, false, false);
092            ret.add(cmd);
093        }
094        return ret;
095    }
096
097    private List<DocumentModel> fetchDocuments(CoreSession session, List<String> ids) {
098        StringBuilder sb = new StringBuilder();
099        sb.append("SELECT * FROM Document, Relation WHERE ecm:uuid IN (");
100        for (int i = 0; i < ids.size(); i++) {
101            sb.append(NXQL.escapeString(ids.get(i)));
102            if (i < ids.size() - 1) {
103                sb.append(", ");
104            }
105        }
106        sb.append(")");
107        // read invalidation
108        session.save();
109        return session.query(sb.toString());
110    }
111
112    protected int getBucketSize() {
113        String value = Framework.getProperty(REINDEX_BUCKET_WRITE_PROPERTY, DEFAULT_BUCKET_SIZE);
114        return Integer.parseInt(value);
115    }
116
117}