com.linuxbox.enkive.statistics.services.retrieval.mongodb.MongoStatsQuery.java Source code

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Here is the source code for com.linuxbox.enkive.statistics.services.retrieval.mongodb.MongoStatsQuery.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.services.retrieval.mongodb;

import static com.linuxbox.enkive.statistics.StatsConstants.STAT_GATHERER_NAME;
import static com.linuxbox.enkive.statistics.StatsConstants.STAT_POINT;
import static com.linuxbox.enkive.statistics.StatsConstants.STAT_TIMESTAMP;
import static com.linuxbox.enkive.statistics.StatsConstants.STAT_TS_POINT;
import static com.linuxbox.enkive.statistics.consolidation.ConsolidationConstants.CONSOLIDATION_MIN;
import static com.linuxbox.enkive.statistics.consolidation.ConsolidationConstants.CONSOLIDATION_TYPE;

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

import com.linuxbox.enkive.statistics.services.retrieval.StatsQuery;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;

/**
 * Describes a query for the stats database. If specified, will return entries
 * at or later than the start time stamp and less than (not less than or equal
 * to) the end time stamp. If either time stamp is null, then the query will not
 * consider it.
 */
public class MongoStatsQuery extends StatsQuery {
    public String gathererName;
    public boolean isPointQuery;

    public MongoStatsQuery(String type, Date startTimestamp, Date endTimestamp) {
        this.startTimestamp = startTimestamp;
        this.endTimestamp = endTimestamp;
        setIsPointQuery(type);
    }

    public MongoStatsQuery(String gathererName, Integer grainType, String type) {
        this.gathererName = gathererName;
        this.grainType = grainType;
        setIsPointQuery(type);
    }

    public MongoStatsQuery(String gathererName, String type, Date startTimestamp, Date endTimestamp) {
        this(type, startTimestamp, endTimestamp);
        this.gathererName = gathererName;
    }

    public MongoStatsQuery(String gathererName, Integer grainType) {
        this(gathererName, grainType, null);
    }

    public MongoStatsQuery(String gathererName, Integer grainType, String type, Date startTimestamp,
            Date endTimestamp) {
        this(gathererName, grainType, type);
        this.startTimestamp = startTimestamp;
        this.endTimestamp = endTimestamp;
    }

    public Map<String, Object> getQuery() {
        Map<String, Object> mongoQuery = new BasicDBObject();

        if (gathererName != null) {
            mongoQuery.put(STAT_GATHERER_NAME, gathererName);
        }

        if (grainType != null) {
            if (grainType == 0) {
                mongoQuery.put(CONSOLIDATION_TYPE, null);
            } else {
                mongoQuery.put(CONSOLIDATION_TYPE, grainType);
            }
        }

        DBObject time = new BasicDBObject();
        String tsKey;
        if (isPointQuery) {
            tsKey = STAT_TIMESTAMP + "." + STAT_TS_POINT;
        } else {
            tsKey = STAT_TIMESTAMP + "." + CONSOLIDATION_MIN;
        }

        if (startTimestamp != null) {
            time.put("$gte", startTimestamp);
        }
        if (endTimestamp != null) {
            time.put("$lt", endTimestamp);
        }

        if (!time.toMap().isEmpty()) {
            mongoQuery.put(tsKey, time);
        }

        return mongoQuery;
    }

    public void setIsPointQuery(String type) {
        if (type != null && type.equals(STAT_POINT)) {
            isPointQuery = true;
        } else {
            isPointQuery = false;// ie) consolidated
        }
    }
}