001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.metrics2.lib;
020
021import org.apache.hadoop.metrics2.MetricsInfo;
022import org.apache.yetus.audience.InterfaceAudience;
023
024/**
025 * Extended histogram implementation with counters for metric size ranges.
026 */
027@InterfaceAudience.Private
028public class MutableSizeHistogram extends MutableRangeHistogram {
029  private final static String RANGE_TYPE = "SizeRangeCount";
030  private final static long[] RANGES = {10,100,1000,10000,100000,1000000,10000000,100000000};
031
032  public MutableSizeHistogram(MetricsInfo info) {
033    this(info.name(), info.description());
034  }
035
036  public MutableSizeHistogram(String name, String description) {
037    this(name, description, RANGES[RANGES.length-2]);
038  }
039
040  public MutableSizeHistogram(String name, String description, long expectedMax) {
041    super(name, description, expectedMax);
042  }
043
044  @Override
045  public String getRangeType() {
046    return RANGE_TYPE;
047  }
048
049  @Override
050  public long[] getRanges() {
051    return RANGES;
052  }
053
054}