1 /*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @summary Test previsitor
27 * @author Andrei Eremeev
28 * @modules jdk.jlink/jdk.tools.jlink
29 * jdk.jlink/jdk.tools.jlink.internal
30 * jdk.jlink/jdk.tools.jlink.plugin
31 * @run main/othervm PrevisitorTest
32 */
33 import java.nio.ByteOrder;
34 import java.util.ArrayList;
35 import java.util.Collection;
36 import java.util.Collections;
37 import java.util.HashMap;
38 import java.util.List;
39 import java.util.Map;
40 import java.util.Optional;
41 import java.util.stream.Collectors;
42
43 import jdk.tools.jlink.internal.ImagePluginConfiguration;
44 import jdk.tools.jlink.internal.Jlink;
45 import jdk.tools.jlink.internal.PluginRepository;
46 import jdk.tools.jlink.internal.ImagePluginStack;
47 import jdk.tools.jlink.internal.ResourcePoolManager;
48 import jdk.tools.jlink.internal.ResourcePoolManager.ResourcePoolImpl;
49 import jdk.tools.jlink.internal.ResourcePrevisitor;
50 import jdk.tools.jlink.internal.StringTable;
51 import jdk.tools.jlink.plugin.Plugin;
52 import jdk.tools.jlink.plugin.ResourcePool;
53 import jdk.tools.jlink.plugin.ResourcePoolBuilder;
54 import jdk.tools.jlink.plugin.ResourcePoolEntry;
55
56 public class PrevisitorTest {
57
58 public static void main(String[] args) throws Exception {
59 new PrevisitorTest().test();
60 }
61
62 private static Plugin createPlugin(String name) {
63 return Jlink.newPlugin(name, Collections.emptyMap(), null);
64 }
65
66 public void test() throws Exception {
67 CustomPlugin plugin = new CustomPlugin();
68 PluginRepository.registerPlugin(plugin);
69 List<Plugin> plugins = new ArrayList<>();
70 plugins.add(createPlugin(CustomPlugin.NAME));
71 ImagePluginStack stack = ImagePluginConfiguration.parseConfiguration(new Jlink.PluginsConfiguration(plugins,
72 null, null));
73 ResourcePoolManager inResources = new ResourcePoolManager(ByteOrder.nativeOrder(), new CustomStringTable());
74 inResources.add(ResourcePoolEntry.create("/aaa/bbb/res1.class", new byte[90]));
75 inResources.add(ResourcePoolEntry.create("/aaa/bbb/res2.class", new byte[90]));
76 inResources.add(ResourcePoolEntry.create("/aaa/bbb/res3.class", new byte[90]));
77 inResources.add(ResourcePoolEntry.create("/aaa/ddd/res1.class", new byte[90]));
78 inResources.add(ResourcePoolEntry.create("/aaa/res1.class", new byte[90]));
79 ResourcePool outResources = stack.visitResources(inResources);
80 Collection<String> input = inResources.entries()
81 .map(Object::toString)
82 .collect(Collectors.toList());
83 Collection<String> output = outResources.entries()
84 .map(Object::toString)
85 .collect(Collectors.toList());
86 if (!input.equals(output)) {
87 throw new AssertionError("Input and output resources differ: input: "
88 + input + ", output: " + output);
89 }
90 }
91
92 private static class CustomStringTable implements StringTable {
93
94 private final List<String> strings = new ArrayList<>();
95
96 @Override
97 public int addString(String str) {
98 strings.add(str);
99 return strings.size() - 1;
100 }
101
102 @Override
103 public String getString(int id) {
104 return strings.get(id);
105 }
106
107 public int size() {
108 return strings.size();
109 }
110 }
111
112 private static class CustomPlugin implements Plugin, ResourcePrevisitor {
113
114 private static String NAME = "plugin";
115
116 private boolean isPrevisitCalled = false;
117
118 @Override
119 public ResourcePool transform(ResourcePool inResources, ResourcePoolBuilder outResources) {
120 if (!isPrevisitCalled) {
121 throw new AssertionError("Previsit was not called");
122 }
123 CustomStringTable table = (CustomStringTable)((ResourcePoolImpl)inResources).getStringTable();
124 if (table.size() == 0) {
125 throw new AssertionError("Table is empty");
126 }
127 Map<String, Integer> count = new HashMap<>();
128 for (int i = 0; i < table.size(); ++i) {
129 String s = table.getString(i);
130 Optional<ResourcePoolEntry> e = inResources.findEntry(s);
131 if (e.isPresent()) {
132 throw new AssertionError();
133 }
134 count.compute(s, (k, c) -> 1 + (c == null ? 0 : c));
135 }
136 count.forEach((k, v) -> {
137 if (v != 1) {
138 throw new AssertionError("Expected one entry in the table, got: " + v + " for " + k);
139 }
140 });
141 inResources.entries().forEach(r -> {
142 outResources.add(r);
143 });
144
145 return outResources.build();
146 }
147
148 @Override
149 public String getName() {
150 return NAME;
151 }
152
153 @Override
154 public void previsit(ResourcePool resources, StringTable strings) {
155 isPrevisitCalled = true;
156 resources.entries().forEach(r -> {
157 String s = r.path();
158 int lastIndexOf = s.lastIndexOf('/');
159 if (lastIndexOf >= 0) {
160 strings.addString(s.substring(0, lastIndexOf));
161 }
162 });
163 }
164 }
165 }