Properties POJOs for MeterFilter configuration

DistributionFilterProperties.java

package io.micrometer.core.instrument.config;

import java.time.Duration;

/**
 * Filter properties that are common to both distribution summaries and timers.
 */
public abstract class DistributionFilterProperties extends MeterFilterProperties {
    /**
     * Controls whether to publish a histogram structure for those monitoring systems that support
     * aggregable percentile calculation based on a histogram. For other systems, this has no effect.
     */
    Boolean percentileHistogram;

    /**
     * The set of Micrometer-computed non-aggregable percentiles to ship to the backend. Percentiles should
     * be defined in the range of (0, 1]. For example, 0.999 represents the 99.9th percentile of the distribution.
     */
    double[] percentiles;

    /**
     * Statistics emanating from a distribution like max, percentiles, and histogram counts decay over time to
     * give greater weight to recent samples (exception: histogram counts are cumulative for those systems that expect cumulative
     * histogram buckets). Samples are accumulated to such statistics in ring buffers which rotate after
     * this expiry, with a buffer length of {@link DistributionFilterProperties#histogramBufferLength}.
     */
    Duration histogramExpiry;

    /**
     * Statistics emanating from a distribution like max, percentiles, and histogram counts decay over time to
     * give greater weight to recent samples (exception: histogram counts are cumulative for those systems that expect cumulative
     * histogram buckets). Samples are accumulated to such statistics in ring buffers which rotate after
     * {@link DistributionFilterProperties#histogramExpiry}, with this buffer length.
     */
    Integer histogramBufferLength;

    public Boolean getPercentileHistogram() {
        return percentileHistogram;
    }

    public void setPercentileHistogram(Boolean percentileHistogram) {
        this.percentileHistogram = percentileHistogram;
    }

    public double[] getPercentiles() {
        return percentiles;
    }

    public void setPercentiles(double[] percentiles) {
        this.percentiles = percentiles;
    }

    public Duration getHistogramExpiry() {
        return histogramExpiry;
    }

    public void setHistogramExpiry(Duration histogramExpiry) {
        this.histogramExpiry = histogramExpiry;
    }

    public Integer getHistogramBufferLength() {
        return histogramBufferLength;
    }

    public void setHistogramBufferLength(Integer histogramBufferLength) {
        this.histogramBufferLength = histogramBufferLength;
    }
}

DistributionSummaryFilterProperties.java

package io.micrometer.core.instrument.config;

public class DistributionSummaryFilterProperties extends DistributionFilterProperties {
    /**
     * Clamps {@link DistributionFilterProperties#percentileHistogram} to the first percentile bucket greater than
     * or equal to the supplied value. Use this property to control the number of histogram buckets used
     * to represent a distribution.
     */
    Long minimumExpectedValue;

    /**
     * Clamps {@link DistributionFilterProperties#percentileHistogram} to the percentile buckets less than
     * or equal to the supplied value. Use this property to control the number of histogram buckets used
     * to represent a distribution.
     */
    Long maximumExpectedValue;

    /**
     * Publish a counter for each SLA boundary that counts violations of the SLA.
     */
    long[] sla;

    public Long getMinimumExpectedValue() {
        return minimumExpectedValue;
    }

    public void setMinimumExpectedValue(Long minimumExpectedValue) {
        this.minimumExpectedValue = minimumExpectedValue;
    }

    public Long getMaximumExpectedValue() {
        return maximumExpectedValue;
    }

    public void setMaximumExpectedValue(Long maximumExpectedValue) {
        this.maximumExpectedValue = maximumExpectedValue;
    }

    public long[] getSla() {
        return sla;
    }

    public void setSla(long[] sla) {
        this.sla = sla;
    }
}

MeterFilterProperties

package io.micrometer.core.instrument.config;

/**
 * Filter properties that are applicable to all {@link io.micrometer.core.instrument.Meter} types.
 */
public class MeterFilterProperties {
    /**
     * If <pre>false</pre>, the matching meter(s) are no-op.
     */
    Boolean enabled;
}

TimerFilterProperties.java

package io.micrometer.core.instrument.config;

import java.time.Duration;

public class TimerFilterProperties extends DistributionFilterProperties {
    /**
     * Clamps {@link DistributionFilterProperties#percentileHistogram} to the first percentile bucket greater than
     * or equal to the supplied value. Use this property to control the number of histogram buckets used
     * to represent a distribution.
     */
    Duration minimumExpectedValue;

    /**
     * Clamps {@link DistributionFilterProperties#percentileHistogram} to the percentile buckets less than
     * or equal to the supplied value. Use this property to control the number of histogram buckets used
     * to represent a distribution.
     */
    Duration maximumExpectedValue;

    /**
     * Publish a counter for each SLA boundary that counts violations of the SLA.
     */
    Duration[] sla;

    public Duration getMinimumExpectedValue() {
        return minimumExpectedValue;
    }

    public Duration getMaximumExpectedValue() {
        return maximumExpectedValue;
    }

    public Duration[] getSla() {
        return sla;
    }
}