1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.hadoop.hbase.regionserver.compactions;
20
21 import java.util.ArrayList;
22 import java.util.Iterator;
23 import java.util.List;
24
25 import org.apache.hadoop.hbase.regionserver.StoreFile;
26
27 /**
28 * Class to generate several lists of StoreFiles that are all the same size.
29 */
30 class ConstantSizeFileListGenerator extends StoreFileListGenerator {
31
32 /** How many mb's mock storefiles should be. */
33 private static final int FILESIZE = 5;
34
35 ConstantSizeFileListGenerator() {
36 super(ConstantSizeFileListGenerator.class);
37 }
38
39 @Override
40 public final Iterator<List<StoreFile>> iterator() {
41 return new Iterator<List<StoreFile>>() {
42 private int count = 0;
43
44 @Override
45 public boolean hasNext() {
46 return count < MAX_FILE_GEN_ITERS;
47 }
48
49 @Override
50 public List<StoreFile> next() {
51 count += 1;
52 ArrayList<StoreFile> files = new ArrayList<StoreFile>(NUM_FILES_GEN);
53 for (int i = 0; i < NUM_FILES_GEN; i++) {
54 files.add(createMockStoreFile(FILESIZE));
55 }
56 return files;
57 }
58
59 @Override
60 public void remove() {
61
62 }
63 };
64 }
65 }