io.micrometer.core.instrument.composite.CompositeDistributionSummary Maven / Gradle / Ivy

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Application monitoring instrumentation facade
There is a newer version: 1.13.0
/**
 * Copyright 2017 VMware, 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
 * 

 * https://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.micrometer.core.instrument.composite;

import io.micrometer.core.instrument.DistributionSummary;
import io.micrometer.core.instrument.Meter;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.distribution.DistributionStatisticConfig;
import io.micrometer.core.instrument.distribution.HistogramSnapshot;
import io.micrometer.core.instrument.noop.NoopDistributionSummary;

class CompositeDistributionSummary extends AbstractCompositeMeter implements DistributionSummary {

    private final DistributionStatisticConfig distributionStatisticConfig;
    private final double scale;

    CompositeDistributionSummary(Meter.Id id, DistributionStatisticConfig distributionStatisticConfig, double scale) {
        super(id);
        this.distributionStatisticConfig = distributionStatisticConfig;
        this.scale = scale;
    }

    @Override
    public void record(double amount) {
        forEachChild(ds -> ds.record(amount));
    }

    @Override
    public long count() {
        return firstChild().count();
    }

    @Override
    public double totalAmount() {
        return firstChild().totalAmount();
    }

    @Override
    public double max() {
        return firstChild().max();
    }

    @Override
    public HistogramSnapshot takeSnapshot() {
        return firstChild().takeSnapshot();
    }

    @Override
    DistributionSummary newNoopMeter() {
        return new NoopDistributionSummary(getId());
    }

    @SuppressWarnings("ConstantConditions")
    @Override
    DistributionSummary registerNewMeter(MeterRegistry registry) {
        return DistributionSummary.builder(getId().getName())
                .tags(getId().getTagsAsIterable())
                .description(getId().getDescription())
                .baseUnit(getId().getBaseUnit())
                .publishPercentiles(distributionStatisticConfig.getPercentiles())
                .publishPercentileHistogram(distributionStatisticConfig.isPercentileHistogram())
                .maximumExpectedValue(distributionStatisticConfig.getMaximumExpectedValueAsDouble())
                .minimumExpectedValue(distributionStatisticConfig.getMinimumExpectedValueAsDouble())
                .distributionStatisticBufferLength(distributionStatisticConfig.getBufferLength())
                .distributionStatisticExpiry(distributionStatisticConfig.getExpiry())
                .percentilePrecision(distributionStatisticConfig.getPercentilePrecision())
                .serviceLevelObjectives(distributionStatisticConfig.getServiceLevelObjectiveBoundaries())
                .scale(scale)
                .register(registry);
    }
}