001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019package org.apache.hadoop.hbase;
020
021import java.util.HashMap;
022import java.util.Map;
023
024import org.apache.yetus.audience.InterfaceAudience;
025
026@InterfaceAudience.Private
027public final class CacheEvictionStatsBuilder {
028  long evictedBlocks = 0;
029  long maxCacheSize = 0;
030  Map<byte[], Throwable> exceptions = new HashMap<>();
031
032  CacheEvictionStatsBuilder() {
033  }
034
035  public CacheEvictionStatsBuilder withEvictedBlocks(long evictedBlocks) {
036    this.evictedBlocks = evictedBlocks;
037    return this;
038  }
039
040  public CacheEvictionStatsBuilder withMaxCacheSize(long maxCacheSize) {
041    this.maxCacheSize = maxCacheSize;
042    return this;
043  }
044
045  public void addException(byte[] regionName, Throwable ie){
046    exceptions.put(regionName, ie);
047  }
048
049  public CacheEvictionStatsBuilder append(CacheEvictionStats stats) {
050    this.evictedBlocks += stats.getEvictedBlocks();
051    this.maxCacheSize += stats.getMaxCacheSize();
052    this.exceptions.putAll(stats.getExceptions());
053    return this;
054  }
055
056  public CacheEvictionStats build() {
057    return new CacheEvictionStats(this);
058  }
059}