hbase-client/src/main/java/org/apache/hadoop/hbase/CacheEvictionStatsBuilder.java

   1 /**
   2  *
   3  * Licensed to the Apache Software Foundation (ASF) under one
   4  * or more contributor license agreements.  See the NOTICE file
   5  * distributed with this work for additional information
   6  * regarding copyright ownership.  The ASF licenses this file
   7  * to you under the Apache License, Version 2.0 (the
   8  * "License"); you may not use this file except in compliance
   9  * with the License.  You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  */
  19 package org.apache.hadoop.hbase;
  20
  21 import java.util.HashMap;
  22 import java.util.Map;
  23
  24 import org.apache.yetus.audience.InterfaceAudience;
  25
  26 @InterfaceAudience.Private
  27 public final class CacheEvictionStatsBuilder {
  28   long evictedBlocks = 0;
  29   long maxCacheSize = 0;
  30   Map<byte[], Throwable> exceptions = new HashMap<>();
  31
  32   CacheEvictionStatsBuilder() {
  33   }
  34
  35   public CacheEvictionStatsBuilder withEvictedBlocks(long evictedBlocks) {
  36     this.evictedBlocks = evictedBlocks;
  37     return this;
  38   }
  39
  40   public CacheEvictionStatsBuilder withMaxCacheSize(long maxCacheSize) {
  41     this.maxCacheSize = maxCacheSize;
  42     return this;
  43   }
  44
  45   public void addException(byte[] regionName, Throwable ie){
  46     exceptions.put(regionName, ie);
  47   }
  48
  49   public CacheEvictionStatsBuilder append(CacheEvictionStats stats) {
  50     this.evictedBlocks += stats.getEvictedBlocks();
  51     this.maxCacheSize += stats.getMaxCacheSize();
  52     this.exceptions.putAll(stats.getExceptions());
  53     return this;
  54   }
  55
  56   public CacheEvictionStats build() {
  57     return new CacheEvictionStats(this);
  58   }
  59 }