ProgressPrinter.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.activemq.broker;

public class ProgressPrinter {

   private final long total;
   private final long interval;
   private long percentDone;
   private long counter;

   public ProgressPrinter(long total, long interval) {
      this.total = total;
      this.interval = interval;
   }

   public synchronized void increment() {
      update(++counter);
   }

   public synchronized void update(long current) {
      long at = 100 * current / total;
      if ((percentDone / interval) != (at / interval)) {
         percentDone = at;
         System.out.println("Completed: " + percentDone + "%");
      }
   }
}