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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.Gauge;

/** A wrapper that allows a Flink gauge to be used as a DropWizard gauge. */
public class FlinkGaugeWrapper implements com.codahale.metrics.Gauge {

    private final Gauge gauge;

    public FlinkGaugeWrapper(Gauge gauge) {
        this.gauge = gauge;
    }

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

    public static  FlinkGaugeWrapper fromGauge(Gauge gauge) {
        @SuppressWarnings("unchecked")
        Gauge typedGauge = (Gauge) gauge;
        return new FlinkGaugeWrapper<>(typedGauge);
    }
}