org.apache.flink.dropwizard.metrics.DropwizardHistogramStatistics Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.flink.dropwizard.metrics;

import org.apache.flink.metrics.HistogramStatistics;

import com.codahale.metrics.Snapshot;

/**
 * Dropwizard histogram statistics implementation returned by {@link DropwizardHistogramWrapper}.
 * The statistics class wraps a {@link Snapshot} instance and forwards the method calls accordingly.
 */
class DropwizardHistogramStatistics extends HistogramStatistics {

    private final com.codahale.metrics.Snapshot snapshot;

    DropwizardHistogramStatistics(com.codahale.metrics.Snapshot snapshot) {
        this.snapshot = snapshot;
    }

    @Override
    public double getQuantile(double quantile) {
        return snapshot.getValue(quantile);
    }

    @Override
    public long[] getValues() {
        return snapshot.getValues();
    }

    @Override
    public int size() {
        return snapshot.size();
    }

    @Override
    public double getMean() {
        return snapshot.getMean();
    }

    @Override
    public double getStdDev() {
        return snapshot.getStdDev();
    }

    @Override
    public long getMax() {
        return snapshot.getMax();
    }

    @Override
    public long getMin() {
        return snapshot.getMin();
    }
}