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/*
 * Copyright 2012 Metamarkets Group Inc.
 *
 * 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.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.metamx.metrics;

import com.metamx.emitter.service.ServiceEmitter;

/**
 */
public abstract class AbstractMonitor implements Monitor
{
  private volatile boolean started = false;

  public void start()
  {
    started = true;
  }

  public void stop()
  {
    started = false;
  }

  @Override
  public boolean monitor(ServiceEmitter emitter)
  {
    if (started) {
      return doMonitor(emitter);
    }

    return false;
  }

  public abstract boolean doMonitor(ServiceEmitter emitter);
}




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