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Gobblin Ingestion Framework

There is a newer version: 0.8.0

/*
 * Copyright (C) 2014-2016 LinkedIn Corp. All rights reserved.
 *
 * 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  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.
 */

package gobblin.metrics;

import java.lang.ref.WeakReference;

import com.codahale.metrics.Gauge;

import gobblin.metrics.metric.InnerMetric;


/**
 * Implementation of {@link InnerMetric} for {@link Gauge}.
 */
public class InnerGauge implements InnerMetric, Gauge {

  private final String name;
  private final Gauge gauge;
  private final WeakReference> contextAwareGauge;

  InnerGauge(MetricContext context, String name, Gauge gauge, ContextAwareGauge contextAwareGauge) {
    this.name = name;
    this.gauge = gauge;
    this.contextAwareGauge = new WeakReference<>(contextAwareGauge);
  }

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

  public String getName() {
    return this.name;
  }

  @Override
  public ContextAwareMetric getContextAwareMetric() {
    return this.contextAwareGauge.get();
  }
}