geode-core/src/main/java/org/apache/geode/internal/statistics/CounterMonitor.java

/*
 * 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.geode.internal.statistics;

/**
 * @since GemFire 7.0
 */
public class CounterMonitor extends StatisticsMonitor {

  public static enum Type {
    GREATER_THAN, LESS_THAN
  }

  private volatile Number threshold;

  public CounterMonitor(Number threshold) {
    super();
    this.threshold = threshold;
  }

  @Override
  public CounterMonitor addStatistic(StatisticId statId) {
    super.addStatistic(statId);
    return this;
  }

  @Override
  public CounterMonitor removeStatistic(StatisticId statId) {
    super.removeStatistic(statId);
    return this;
  }

  public CounterMonitor greaterThan(Number threshold) {
    return this;
  }

  @Override
  protected StringBuilder appendToString() {
    final StringBuilder sb = new StringBuilder();
    sb.append("threshold=").append(this.threshold);
    return sb;
  }
}