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.hdfs.protocol;
020
021import org.apache.hadoop.classification.InterfaceAudience;
022import org.apache.hadoop.classification.InterfaceStability;
023
024/**
025 * CachePoolStats describes cache pool statistics.
026 */
027@InterfaceAudience.Public
028@InterfaceStability.Evolving
029public 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}