com.metamx.druid.master.rules.PeriodLoadRule.java Source code

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Here is the source code for com.metamx.druid.master.rules.PeriodLoadRule.java

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/*
 * Druid - a distributed column store.
 * Copyright (C) 2012  Metamarkets Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package com.metamx.druid.master.rules;

import com.metamx.common.logger.Logger;
import com.metamx.druid.client.DataSegment;
import org.codehaus.jackson.annotate.JsonCreator;
import org.codehaus.jackson.annotate.JsonProperty;
import org.joda.time.DateTime;
import org.joda.time.Interval;
import org.joda.time.Period;

/**
 */
public class PeriodLoadRule extends LoadRule {
    private static final Logger log = new Logger(PeriodLoadRule.class);

    private final Period period;
    private final Integer replicants;
    private final String tier;

    @JsonCreator
    public PeriodLoadRule(@JsonProperty("period") Period period, @JsonProperty("replicants") Integer replicants,
            @JsonProperty("tier") String tier) {
        this.period = period;
        this.replicants = (replicants == null) ? 2 : replicants;
        this.tier = tier;
    }

    @Override
    @JsonProperty
    public String getType() {
        return "loadByPeriod";
    }

    @JsonProperty
    public Period getPeriod() {
        return period;
    }

    @JsonProperty
    public int getReplicants() {
        return replicants;
    }

    @Override
    public int getReplicants(String tier) {
        return (this.tier.equalsIgnoreCase(tier)) ? replicants : 0;
    }

    @JsonProperty
    public String getTier() {
        return tier;
    }

    @Override
    public boolean appliesTo(DataSegment segment, DateTime referenceTimestamp) {
        final Interval currInterval = new Interval(period, referenceTimestamp);
        return currInterval.overlaps(segment.getInterval());
    }
}