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• io.dropwizard.metrics5
• metrics-legacy-adapter
• 5.0.0
• source code
• Gauge.java

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com.codahale.metrics.Gauge Maven / Gradle / Ivy

package com.codahale.metrics;

@Deprecated
public interface Gauge extends Metric {

    T getValue();

    @Override
    default io.dropwizard.metrics5.Gauge getDelegate() {
        return new GaugeAdapter<>(this);
    }

    @SuppressWarnings("unchecked")
    static  Gauge of(io.dropwizard.metrics5.Gauge gauge) {
        if (gauge instanceof GaugeAdapter) {
            return ((GaugeAdapter) gauge).delegate;
        }
        return gauge::getValue;
    }

    class GaugeAdapter implements io.dropwizard.metrics5.Gauge {

        private final Gauge delegate;

        GaugeAdapter(Gauge gauge) {
            this.delegate = gauge;
        }

        Gauge getGauge() {
            return delegate;
        }

        @Override
        public T getValue() {
            return delegate.getValue();
        }
    }
}