1 /*
2 * Copyright (c) 2018, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package jdk.jfr.api.flightrecorder;
27
28 import java.io.IOException;
29 import java.io.InputStream;
30 import java.time.Duration;
31 import java.time.Instant;
32 import java.util.ArrayList;
33 import java.util.List;
34
35 import jdk.jfr.FlightRecorder;
36 import jdk.jfr.Recording;
37 import jdk.jfr.RecordingState;
38 import jdk.jfr.consumer.RecordedEvent;
39 import jdk.test.lib.Asserts;
40 import jdk.test.lib.jfr.Events;
41 import jdk.test.lib.jfr.SimpleEvent;
42
43 /**
44 * @test
45 * @key jfr
46 *
47 * @library /lib /
48 * @run main/othervm jdk.jfr.api.flightrecorder.TestSnapshot
49 */
50 public class TestSnapshot {
51 private final static int RECORDING_COUNT = 5;
52
53 public static void main(String[] args) throws Exception {
54 testEmpty();
55 testStopped();
56 testOngoingDisk();
57 testOngoingMemory();
58 testMultiple();
59 }
60
61 private static void testMultiple() throws IOException {
62 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
63 List<Recording> recordings = new ArrayList<>();
64 long size = 0;
65 for (int i = 0; i < RECORDING_COUNT; i++) {
66 Recording r = new Recording();
67 r.enable(SimpleEvent.class);
68 r.start();
69 SimpleEvent se = new SimpleEvent();
70 se.commit();
71 r.stop();
72 recordings.add(r);
73 size += r.getSize();
74 }
75 try (Recording snapshot = recorder.takeSnapshot()) {
76 Asserts.assertEquals(snapshot.getSize(), size);
77 Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), recordings.get(0).getStartTime());
78 Asserts.assertLessThanOrEqual(snapshot.getStopTime(), recordings.get(RECORDING_COUNT - 1).getStopTime());
79 Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO);
80 assertStaticOptions(snapshot);
81 try (InputStream is = snapshot.getStream(null, null)) {
82 Asserts.assertNotNull(is);
83 }
84
85 List<RecordedEvent> events = Events.fromRecording(snapshot);
86 Events.hasEvents(events);
87 Asserts.assertEquals(events.size(), RECORDING_COUNT);
88 for (int i = 0; i < RECORDING_COUNT; i++) {
89 Asserts.assertEquals(events.get(i).getEventType().getName(), SimpleEvent.class.getName());
90 }
91 }
92 for (Recording r : recordings) {
93 r.close();
94 }
95 }
96 private static void testOngoingMemory() throws IOException {
97 testOngoing(false);
98 }
99
100 private static void testOngoingDisk() throws IOException {
101 testOngoing(true);
102 }
103
104 private static void testOngoing(boolean disk) throws IOException {
105 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
106 try (Recording r = new Recording()) {
107 r.setToDisk(disk);
108 r.enable(SimpleEvent.class);
109 r.start();
110 SimpleEvent se = new SimpleEvent();
111 se.commit();
112
113 try (Recording snapshot = recorder.takeSnapshot()) {
114
115 Asserts.assertGreaterThan(snapshot.getSize(), 0L);
116 Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), r.getStartTime());
117 Asserts.assertGreaterThanOrEqual(snapshot.getStopTime(), r.getStartTime());
118 Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO);
119 assertStaticOptions(snapshot);
120 try (InputStream is = snapshot.getStream(null, null)) {
121 Asserts.assertNotNull(is);
122 }
123
124 List<RecordedEvent> events = Events.fromRecording(snapshot);
125 Events.hasEvents(events);
126 Asserts.assertEquals(events.size(), 1);
127 Asserts.assertEquals(events.get(0).getEventType().getName(), SimpleEvent.class.getName());
128 }
129
130 r.stop();
131 }
132 }
133
134 private static void assertStaticOptions(Recording snapshot) {
135 Asserts.assertTrue(snapshot.getName().startsWith("Snapshot"), "Recording name should begin with 'Snapshot'");
136 Asserts.assertEquals(snapshot.getMaxAge(), null);
137 Asserts.assertEquals(snapshot.getMaxSize(), 0L);
138 Asserts.assertTrue(snapshot.getSettings().isEmpty());
139 Asserts.assertEquals(snapshot.getState(), RecordingState.STOPPED);
140 Asserts.assertEquals(snapshot.getDumpOnExit(), false);
141 Asserts.assertEquals(snapshot.getDestination(), null);
142 }
143
144 private static void testStopped() throws IOException {
145 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
146 try (Recording r = new Recording()) {
147 r.enable(SimpleEvent.class);
148 r.start();
149 SimpleEvent se = new SimpleEvent();
150 se.commit();
151 r.stop();
152
153 try (Recording snapshot = recorder.takeSnapshot()) {
154
155 Asserts.assertEquals(snapshot.getSize(), r.getSize());
156 Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), r.getStartTime());
157 Asserts.assertLessThanOrEqual(snapshot.getStopTime(), r.getStopTime());
158 Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO);
159 assertStaticOptions(snapshot);
160 try (InputStream is = snapshot.getStream(null, null)) {
161 Asserts.assertNotNull(is);
162 }
163
164 List<RecordedEvent> events = Events.fromRecording(snapshot);
165 Events.hasEvents(events);
166 Asserts.assertEquals(events.size(), 1);
167 Asserts.assertEquals(events.get(0).getEventType().getName(), SimpleEvent.class.getName());
168 }
169 }
170 }
171
172 private static void testEmpty() throws IOException {
173 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
174 Instant before = Instant.now().minusNanos(1);
175 try (Recording snapshot = recorder.takeSnapshot()) {
176 Instant after = Instant.now().plusNanos(1);
177 Asserts.assertEquals(snapshot.getSize(), 0L);
178 Asserts.assertLessThan(before, snapshot.getStartTime());
179 Asserts.assertGreaterThan(after, snapshot.getStopTime());
180 Asserts.assertEquals(snapshot.getStartTime(), snapshot.getStopTime());
181 Asserts.assertEquals(snapshot.getDuration(), Duration.ZERO);
182 assertStaticOptions(snapshot);
183 Asserts.assertEquals(snapshot.getStream(null, null), null);
184 }
185 }
186
187 }