1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.commons.compress.archivers.zip;
import org.apache.commons.compress.parallel.FileBasedScatterGatherBackingStore;
import org.apache.commons.compress.parallel.InputStreamSupplier;
import org.apache.commons.compress.parallel.ScatterGatherBackingStore;
import org.apache.commons.compress.parallel.ScatterGatherBackingStoreSupplier;
import org.apache.commons.compress.utils.IOUtils;
import org.junit.After;
import org.junit.Test;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.zip.ZipEntry;
import static org.apache.commons.compress.AbstractTestCase.tryHardToDelete;
import static org.junit.Assert.*;
public class ParallelScatterZipCreatorTest {
private final int NUMITEMS = 5000;
private File result;
private File tmp;
@After
public void cleanup() {
tryHardToDelete(result);
tryHardToDelete(tmp);
}
@Test
public void concurrent()
throws Exception {
result = File.createTempFile("parallelScatterGather1", "");
final ZipArchiveOutputStream zos = new ZipArchiveOutputStream(result);
zos.setEncoding("UTF-8");
final ParallelScatterZipCreator zipCreator = new ParallelScatterZipCreator();
final Map<String, byte[]> entries = writeEntries(zipCreator);
zipCreator.writeTo(zos);
zos.close();
removeEntriesFoundInZipFile(result, entries);
assertTrue(entries.size() == 0);
assertNotNull( zipCreator.getStatisticsMessage());
}
@Test
public void callableApi()
throws Exception {
result = File.createTempFile("parallelScatterGather2", "");
final ZipArchiveOutputStream zos = new ZipArchiveOutputStream(result);
zos.setEncoding("UTF-8");
final ExecutorService es = Executors.newFixedThreadPool(1);
final ScatterGatherBackingStoreSupplier supp = new ScatterGatherBackingStoreSupplier() {
@Override
public ScatterGatherBackingStore get() throws IOException {
return new FileBasedScatterGatherBackingStore(tmp = File.createTempFile("parallelscatter", "n1"));
}
};
final ParallelScatterZipCreator zipCreator = new ParallelScatterZipCreator(es, supp);
final Map<String, byte[]> entries = writeEntriesAsCallable(zipCreator);
zipCreator.writeTo(zos);
zos.close();
removeEntriesFoundInZipFile(result, entries);
assertTrue(entries.size() == 0);
assertNotNull(zipCreator.getStatisticsMessage());
}
private void removeEntriesFoundInZipFile(final File result, final Map<String, byte[]> entries) throws IOException {
final ZipFile zf = new ZipFile(result);
final Enumeration<ZipArchiveEntry> entriesInPhysicalOrder = zf.getEntriesInPhysicalOrder();
while (entriesInPhysicalOrder.hasMoreElements()){
final ZipArchiveEntry zipArchiveEntry = entriesInPhysicalOrder.nextElement();
final InputStream inputStream = zf.getInputStream(zipArchiveEntry);
final byte[] actual = IOUtils.toByteArray(inputStream);
final byte[] expected = entries.remove(zipArchiveEntry.getName());
assertArrayEquals( "For " + zipArchiveEntry.getName(), expected, actual);
}
zf.close();
}
private Map<String, byte[]> writeEntries(final ParallelScatterZipCreator zipCreator) {
final Map<String, byte[]> entries = new HashMap<>();
for (int i = 0; i < NUMITEMS; i++){
final byte[] payloadBytes = ("content" + i).getBytes();
final ZipArchiveEntry za = createZipArchiveEntry(entries, i, payloadBytes);
final InputStreamSupplier iss = new InputStreamSupplier() {
@Override
public InputStream get() {
return new ByteArrayInputStream(payloadBytes);
}
};
if (i % 2 == 0) {
zipCreator.addArchiveEntry(za, iss);
} else {
final ZipArchiveEntryRequestSupplier zaSupplier = new ZipArchiveEntryRequestSupplier() {
@Override
public ZipArchiveEntryRequest get() {
return ZipArchiveEntryRequest.createZipArchiveEntryRequest(za, iss);
}
};
zipCreator.addArchiveEntry(zaSupplier);
}
}
return entries;
}
private Map<String, byte[]> writeEntriesAsCallable(final ParallelScatterZipCreator zipCreator) {
final Map<String, byte[]> entries = new HashMap<>();
for (int i = 0; i < NUMITEMS; i++){
final byte[] payloadBytes = ("content" + i).getBytes();
final ZipArchiveEntry za = createZipArchiveEntry(entries, i, payloadBytes);
final InputStreamSupplier iss = new InputStreamSupplier() {
@Override
public InputStream get() {
return new ByteArrayInputStream(payloadBytes);
}
};
final Callable<Object> callable;
if (i % 2 == 0) {
callable = zipCreator.createCallable(za, iss);
} else {
final ZipArchiveEntryRequestSupplier zaSupplier = new ZipArchiveEntryRequestSupplier() {
@Override
public ZipArchiveEntryRequest get() {
return ZipArchiveEntryRequest.createZipArchiveEntryRequest(za, iss);
}
};
callable = zipCreator.createCallable(zaSupplier);
}
zipCreator.submit(callable);
}
return entries;
}
private ZipArchiveEntry createZipArchiveEntry(final Map<String, byte[]> entries, final int i, final byte[] payloadBytes) {
final ZipArchiveEntry za = new ZipArchiveEntry( "file" + i);
entries.put( za.getName(), payloadBytes);
za.setMethod(ZipEntry.DEFLATED);
za.setSize(payloadBytes.length);
za.setUnixMode(UnixStat.FILE_FLAG | 0664);
return za;
}
}
|
