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    
019    package org.apache.hadoop.hdfs.protocol;
020    
021    import org.apache.hadoop.classification.InterfaceAudience;
022    import org.apache.hadoop.classification.InterfaceStability;
023    
024    /**
025     * CachePoolStats describes cache pool statistics.
026     */
027    @InterfaceAudience.Public
028    @InterfaceStability.Evolving
029    public class CachePoolStats {
030      public static class Builder {
031        private long bytesNeeded;
032        private long bytesCached;
033        private long bytesOverlimit;
034        private long filesNeeded;
035        private long filesCached;
036    
037        public Builder() {
038        }
039    
040        public Builder setBytesNeeded(long bytesNeeded) {
041          this.bytesNeeded = bytesNeeded;
042          return this;
043        }
044    
045        public Builder setBytesCached(long bytesCached) {
046          this.bytesCached = bytesCached;
047          return this;
048        }
049    
050        public Builder setBytesOverlimit(long bytesOverlimit) {
051          this.bytesOverlimit = bytesOverlimit;
052          return this;
053        }
054    
055        public Builder setFilesNeeded(long filesNeeded) {
056          this.filesNeeded = filesNeeded;
057          return this;
058        }
059    
060        public Builder setFilesCached(long filesCached) {
061          this.filesCached = filesCached;
062          return this;
063        }
064    
065        public CachePoolStats build() {
066          return new CachePoolStats(bytesNeeded, bytesCached, bytesOverlimit,
067              filesNeeded, filesCached);
068        }
069      };
070    
071      private final long bytesNeeded;
072      private final long bytesCached;
073      private final long bytesOverlimit;
074      private final long filesNeeded;
075      private final long filesCached;
076    
077      private CachePoolStats(long bytesNeeded, long bytesCached,
078          long bytesOverlimit, long filesNeeded, long filesCached) {
079        this.bytesNeeded = bytesNeeded;
080        this.bytesCached = bytesCached;
081        this.bytesOverlimit = bytesOverlimit;
082        this.filesNeeded = filesNeeded;
083        this.filesCached = filesCached;
084      }
085    
086      public long getBytesNeeded() {
087        return bytesNeeded;
088      }
089    
090      public long getBytesCached() {
091        return bytesCached;
092      }
093    
094      public long getBytesOverlimit() {
095        return bytesOverlimit;
096      }
097    
098      public long getFilesNeeded() {
099        return filesNeeded;
100      }
101    
102      public long getFilesCached() {
103        return filesCached;
104      }
105    
106      public String toString() {
107        return new StringBuilder().append("{").
108          append("bytesNeeded:").append(bytesNeeded).
109          append(", bytesCached:").append(bytesCached).
110          append(", bytesOverlimit:").append(bytesOverlimit).
111          append(", filesNeeded:").append(filesNeeded).
112          append(", filesCached:").append(filesCached).
113          append("}").toString();
114      }
115    }