com.linuxbox.enkive.statistics.gathering.mongodb.MongoStatsAttachmentsGatherer.java Source code

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Here is the source code for com.linuxbox.enkive.statistics.gathering.mongodb.MongoStatsAttachmentsGatherer.java

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/*******************************************************************************
 * Copyright 2013 The Linux Box Corporation.
 * 
 * This file is part of Enkive CE (Community Edition).
 * Enkive CE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 * 
 * Enkive CE 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 Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public
 * License along with Enkive CE. If not, see
 * <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package com.linuxbox.enkive.statistics.gathering.mongodb;

import static com.linuxbox.enkive.statistics.StatsConstants.STAT_ATTACH_NUM;
import static com.linuxbox.enkive.statistics.StatsConstants.STAT_ATTACH_SIZE;
import static com.linuxbox.enkive.statistics.VarsMaker.createMap;
import static com.linuxbox.enkive.statistics.consolidation.ConsolidationConstants.CONSOLIDATION_AVG;
import static com.linuxbox.enkive.statistics.gathering.mongodb.MongoConstants.MONGO_LENGTH;
import static com.linuxbox.enkive.statistics.gathering.mongodb.MongoConstants.MONGO_UPLOAD_DATE;
import static com.linuxbox.util.mongodb.MongoDbConstants.GRID_FS_FILES_COLLECTION_SUFFIX;

import java.util.Date;
import java.util.List;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.linuxbox.enkive.statistics.gathering.AbstractGatherer;
import com.linuxbox.enkive.statistics.gathering.GathererException;
import com.linuxbox.util.dbinfo.mongodb.MongoGridDbInfo;
import com.mongodb.BasicDBObject;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;

public class MongoStatsAttachmentsGatherer extends AbstractGatherer {
    protected final static Log LOGGER = LogFactory
            .getLog("com.linuxbox.enkive.statistics.gathering.StatsMongoAttachmentsGatherer");

    protected DBCollection attachmentsColl;

    public MongoStatsAttachmentsGatherer(Mongo m, String dbName, String attachmentsColl, String gathererName,
            String humanName, List<String> keys) throws GathererException {
        this(gathererName, humanName, keys,
                m.getDB(dbName).getCollection(attachmentsColl + GRID_FS_FILES_COLLECTION_SUFFIX));
    }

    public MongoStatsAttachmentsGatherer(MongoGridDbInfo dbInfo, String gathererName, String humanName,
            List<String> keys) throws GathererException {
        this(gathererName, humanName, keys, dbInfo.getCollection());
    }

    public MongoStatsAttachmentsGatherer(String gathererName, String humanName, List<String> keys,
            DBCollection collection) throws GathererException {
        super(gathererName, humanName, keys);
        this.attachmentsColl = collection;
    }

    /**
     * FIXME: NOAHCODE -- so we have an interface that requires both methods,
     * one of which always returns null!?
     */
    @Override
    protected Map<String, Object> getPointStatistics(Date startTimestamp, Date endTimestamp)
            throws GathererException {
        return null;
    }

    @Override
    protected Map<String, Object> getIntervalStatistics(Date startTimestamp, Date endTimestamp)
            throws GathererException {
        Map<String, Object> intervalMap = createMap();
        Map<String, Object> query = createMap();
        Map<String, Object> innerQuery = createMap();
        innerQuery.put("$gte", startTimestamp);
        innerQuery.put("$lt", endTimestamp);
        query.put(MONGO_UPLOAD_DATE, innerQuery);
        long dataByteSz = 0;
        DBCursor dataCursor = attachmentsColl.find(new BasicDBObject(query));

        for (DBObject obj : dataCursor) {
            dataByteSz += (Long) (obj.get(MONGO_LENGTH));
        }
        Map<String, Object> innerNumAttach = createMap();
        innerNumAttach.put(CONSOLIDATION_AVG, dataCursor.count());

        long avgAttSz = 0;
        if (dataCursor.count() != 0) {
            avgAttSz = dataByteSz / dataCursor.count();
        }

        intervalMap.put(STAT_ATTACH_SIZE, avgAttSz);
        intervalMap.put(STAT_ATTACH_NUM, dataCursor.count());

        return intervalMap;
    }
}