io.druid.server.coordinator.CoordinatorStats.java Source code

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Here is the source code for io.druid.server.coordinator.CoordinatorStats.java

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.druid.server.coordinator;

import com.google.common.collect.Maps;
import io.druid.collections.CountingMap;

import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;

/**
 */
public class CoordinatorStats {
    private final Map<String, CountingMap<String>> perTierStats;
    private final CountingMap<String> globalStats;

    public CoordinatorStats() {
        perTierStats = Maps.newHashMap();
        globalStats = new CountingMap<String>();
    }

    public Map<String, CountingMap<String>> getPerTierStats() {
        return perTierStats;
    }

    public CountingMap<String> getGlobalStats() {
        return globalStats;
    }

    public void addToTieredStat(String statName, String tier, long value) {
        CountingMap<String> theStat = perTierStats.get(statName);
        if (theStat == null) {
            theStat = new CountingMap<String>();
            perTierStats.put(statName, theStat);
        }
        theStat.add(tier, value);
    }

    public void addToGlobalStat(String statName, long value) {
        globalStats.add(statName, value);
    }

    public CoordinatorStats accumulate(CoordinatorStats stats) {
        for (Map.Entry<String, CountingMap<String>> entry : stats.perTierStats.entrySet()) {
            CountingMap<String> theStat = perTierStats.get(entry.getKey());
            if (theStat == null) {
                theStat = new CountingMap<String>();
                perTierStats.put(entry.getKey(), theStat);
            }
            for (Map.Entry<String, AtomicLong> tiers : entry.getValue().entrySet()) {
                theStat.add(tiers.getKey(), tiers.getValue().get());
            }
        }
        for (Map.Entry<String, AtomicLong> entry : stats.globalStats.entrySet()) {
            globalStats.add(entry.getKey(), entry.getValue().get());
        }
        return this;
    }
}