1 /*
2 * Copyright (c) 2019, 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 package org.graalvm.compiler.graph.test.graphio;
26
27 import static org.junit.Assert.assertArrayEquals;
28 import static org.junit.Assert.assertFalse;
29 import static org.junit.Assert.assertTrue;
30 import static org.junit.Assert.fail;
31
32 import java.io.ByteArrayOutputStream;
33 import java.io.IOException;
34 import java.nio.ByteBuffer;
35 import java.nio.channels.Channels;
36 import java.nio.channels.WritableByteChannel;
37 import java.util.Collection;
38 import java.util.Collections;
39 import java.util.Map;
40 import java.util.Objects;
41 import org.graalvm.graphio.GraphOutput;
42 import org.graalvm.graphio.GraphStructure;
43 import org.junit.Test;
44
45 public final class GraphOutputTest {
46
47 @Test
48 @SuppressWarnings("static-method")
49 public void testWritableByteChannel() throws IOException {
50 ByteArrayOutputStream out = new ByteArrayOutputStream();
51 WritableByteChannel channel = Channels.newChannel(out);
52 ByteBuffer data = generateData(1 << 17);
53 GraphOutput<?, ?> graphOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).embedded(true).build(channel);
54 try (GraphOutput<?, ?> closable = graphOutput) {
55 assertTrue(closable.isOpen());
56 closable.write(data);
57 }
58 assertFalse(graphOutput.isOpen());
59 assertArrayEquals(data.array(), out.toByteArray());
60 }
61
62 @Test
63 @SuppressWarnings("static-method")
64 public void testWriteDuringPrint() throws IOException {
65 ByteArrayOutputStream out = new ByteArrayOutputStream();
66 WritableByteChannel channel = Channels.newChannel(out);
67 class Action implements Runnable {
68 GraphOutput<MockGraph, ?> out;
69
70 @Override
71 public void run() {
72 try {
73 ByteBuffer data = ByteBuffer.allocate(16);
74 data.limit(16);
75 out.write(data);
76 } catch (IOException ioe) {
77 throw new RuntimeException(ioe);
78 }
79 }
80 }
81 Action action = new Action();
82 try (GraphOutput<MockGraph, ?> graphOutput = GraphOutput.newBuilder(new MockGraphStructure(action)).protocolVersion(6, 0).build(channel)) {
83 action.out = graphOutput;
84 try {
85 graphOutput.print(new MockGraph(), Collections.emptyMap(), 0, "Mock Graph");
86 fail("Expected IllegalStateException");
87 } catch (IllegalStateException ise) {
88 // expected exception
89 }
90 }
91 }
92
93 @Test
94 @SuppressWarnings("static-method")
95 public void testEmbeddedWritableByteChannel() throws IOException {
96 ByteArrayOutputStream expected = new ByteArrayOutputStream();
97 WritableByteChannel expectedChannel = Channels.newChannel(expected);
98 Map<Object, Object> properties = Collections.singletonMap("version.id", 1);
99 try (GraphOutput<MockGraph, ?> graphOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).build(expectedChannel)) {
100 graphOutput.print(new MockGraph(), properties, 1, "Graph 1");
101 graphOutput.write(ByteBuffer.allocate(0));
102 graphOutput.print(new MockGraph(), properties, 2, "Graph 1");
103 }
104 ByteArrayOutputStream embedded = new ByteArrayOutputStream();
105 SharedWritableByteChannel embeddChannel = new SharedWritableByteChannel(Channels.newChannel(embedded));
106 try {
107 try (GraphOutput<MockGraph, ?> baseOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).build(embeddChannel)) {
108 try (GraphOutput<MockGraph, ?> embeddedOutput = GraphOutput.newBuilder(new MockGraphStructure()).protocolVersion(6, 0).embedded(true).build((WritableByteChannel) baseOutput)) {
109 embeddedOutput.print(new MockGraph(), properties, 1, "Graph 1");
110 baseOutput.print(new MockGraph(), properties, 2, "Graph 1");
111 }
112 }
113 } finally {
114 embeddChannel.realClose();
115 }
116 assertArrayEquals(expected.toByteArray(), embedded.toByteArray());
117 }
118
119 private static ByteBuffer generateData(int size) {
120 ByteBuffer buffer = ByteBuffer.allocate(size);
121 for (int i = 0; i < size; i++) {
122 buffer.put(i, (byte) i);
123 }
124 buffer.limit(size);
125 return buffer;
126 }
127
128 private static final class SharedWritableByteChannel implements WritableByteChannel {
129
130 private final WritableByteChannel delegate;
131
132 SharedWritableByteChannel(WritableByteChannel delegate) {
133 Objects.requireNonNull(delegate, "Delegate must be non null.");
134 this.delegate = delegate;
135 }
136
137 @Override
138 public int write(ByteBuffer bb) throws IOException {
139 return delegate.write(bb);
140 }
141
142 @Override
143 public boolean isOpen() {
144 return delegate.isOpen();
145 }
146
147 @Override
148 public void close() throws IOException {
149 }
150
151 void realClose() throws IOException {
152 delegate.close();
153 }
154 }
155
156 private static final class MockGraphStructure implements GraphStructure<MockGraph, Void, Void, Void> {
157
158 private final Runnable enterAction;
159
160 MockGraphStructure() {
161 this.enterAction = null;
162 }
163
164 MockGraphStructure(Runnable enterAction) {
165 this.enterAction = enterAction;
166 }
167
168 @Override
169 public MockGraph graph(MockGraph currentGraph, Object obj) {
170 onEnter();
171 return null;
172 }
173
174 @Override
175 public Iterable<? extends Void> nodes(MockGraph graph) {
176 onEnter();
177 return Collections.emptySet();
178 }
179
180 @Override
181 public int nodesCount(MockGraph graph) {
182 onEnter();
183 return 0;
184 }
185
186 @Override
187 public int nodeId(Void node) {
188 onEnter();
189 return 0;
190 }
191
192 @Override
193 public boolean nodeHasPredecessor(Void node) {
194 onEnter();
195 return false;
196 }
197
198 @Override
199 public void nodeProperties(MockGraph graph, Void node, Map<String, ? super Object> properties) {
200 onEnter();
201 }
202
203 @Override
204 public Void node(Object obj) {
205 onEnter();
206 return null;
207 }
208
209 @Override
210 public Void nodeClass(Object obj) {
211 onEnter();
212 return null;
213 }
214
215 @Override
216 public Void classForNode(Void node) {
217 onEnter();
218 return null;
219 }
220
221 @Override
222 public String nameTemplate(Void nodeClass) {
223 onEnter();
224 return null;
225 }
226
227 @Override
228 public Object nodeClassType(Void nodeClass) {
229 onEnter();
230 return null;
231 }
232
233 @Override
234 public Void portInputs(Void nodeClass) {
235 onEnter();
236 return null;
237 }
238
239 @Override
240 public Void portOutputs(Void nodeClass) {
241 onEnter();
242 return null;
243 }
244
245 @Override
246 public int portSize(Void port) {
247 onEnter();
248 return 0;
249 }
250
251 @Override
252 public boolean edgeDirect(Void port, int index) {
253 onEnter();
254 return false;
255 }
256
257 @Override
258 public String edgeName(Void port, int index) {
259 onEnter();
260 return null;
261 }
262
263 @Override
264 public Object edgeType(Void port, int index) {
265 onEnter();
266 return null;
267 }
268
269 @Override
270 public Collection<? extends Void> edgeNodes(MockGraph graph, Void node, Void port, int index) {
271 onEnter();
272 return null;
273 }
274
275 private void onEnter() {
276 if (enterAction != null) {
277 enterAction.run();
278 }
279 }
280 }
281
282 private static final class MockGraph {
283 }
284 }