1 /*
2 * Copyright (c) 2018, 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. 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.testlibrary.Asserts;
40 import jdk.testlibrary.jfr.Events;
41 import jdk.testlibrary.jfr.SimpleEvent;
42
43 /* @test
44 * @key jfr
45 * @library /lib/testlibrary
46 * @run main/othervm jdk.jfr.api.flightrecorder.TestSnapshot
47 */
48 public class TestSnapshot {
49 private final static int RECORDING_COUNT = 5;
50
51 public static void main(String[] args) throws Exception {
52 testEmpty();
53 testStopped();
54 testOngoingDisk();
55 testOngoingMemory();
56 testMultiple();
57 }
58
59 private static void testMultiple() throws IOException {
60 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
61 List<Recording> recordings = new ArrayList<>();
62 long size = 0;
63 for (int i = 0; i < RECORDING_COUNT; i++) {
64 Recording r = new Recording();
65 r.enable(SimpleEvent.class);
66 r.start();
67 SimpleEvent se = new SimpleEvent();
68 se.commit();
69 r.stop();
70 recordings.add(r);
71 size += r.getSize();
72 }
73 try (Recording snapshot = recorder.takeSnapshot()) {
74 Asserts.assertEquals(snapshot.getSize(), size);
75 Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), recordings.get(0).getStartTime());
76 Asserts.assertLessThanOrEqual(snapshot.getStopTime(), recordings.get(RECORDING_COUNT - 1).getStopTime());
77 Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO);
78 assertStaticOptions(snapshot);
79 try (InputStream is = snapshot.getStream(null, null)) {
80 Asserts.assertNotNull(is);
81 }
82
83 List<RecordedEvent> events = Events.fromRecording(snapshot);
84 Events.hasEvents(events);
85 Asserts.assertEquals(events.size(), RECORDING_COUNT);
86 for (int i = 0; i < RECORDING_COUNT; i++) {
87 Asserts.assertEquals(events.get(i).getEventType().getName(), SimpleEvent.class.getName());
88 }
89 }
90 for (Recording r : recordings) {
91 r.close();
92 }
93 }
94 private static void testOngoingMemory() throws IOException {
95 testOngoing(false);
96 }
97
98 private static void testOngoingDisk() throws IOException {
99 testOngoing(true);
100 }
101
102 private static void testOngoing(boolean disk) throws IOException {
103 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
104 try (Recording r = new Recording()) {
105 r.setToDisk(disk);
106 r.enable(SimpleEvent.class);
107 r.start();
108 SimpleEvent se = new SimpleEvent();
109 se.commit();
110
111 try (Recording snapshot = recorder.takeSnapshot()) {
112
113 Asserts.assertGreaterThan(snapshot.getSize(), 0L);
114 Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), r.getStartTime());
115 Asserts.assertGreaterThanOrEqual(snapshot.getStopTime(), r.getStartTime());
116 Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO);
117 assertStaticOptions(snapshot);
118 try (InputStream is = snapshot.getStream(null, null)) {
119 Asserts.assertNotNull(is);
120 }
121
122 List<RecordedEvent> events = Events.fromRecording(snapshot);
123 Events.hasEvents(events);
124 Asserts.assertEquals(events.size(), 1);
125 Asserts.assertEquals(events.get(0).getEventType().getName(), SimpleEvent.class.getName());
126 }
127
128 r.stop();
129 }
130 }
131
132 private static void assertStaticOptions(Recording snapshot) {
133 Asserts.assertTrue(snapshot.getName().startsWith("Snapshot"), "Recording name should begin with 'Snapshot'");
134 Asserts.assertEquals(snapshot.getMaxAge(), null);
135 Asserts.assertEquals(snapshot.getMaxSize(), 0L);
136 Asserts.assertTrue(snapshot.getSettings().isEmpty());
137 Asserts.assertEquals(snapshot.getState(), RecordingState.STOPPED);
138 Asserts.assertEquals(snapshot.getDumpOnExit(), false);
139 Asserts.assertEquals(snapshot.getDestination(), null);
140 }
141
142 private static void testStopped() throws IOException {
143 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
144 try (Recording r = new Recording()) {
145 r.enable(SimpleEvent.class);
146 r.start();
147 SimpleEvent se = new SimpleEvent();
148 se.commit();
149 r.stop();
150
151 try (Recording snapshot = recorder.takeSnapshot()) {
152
153 Asserts.assertEquals(snapshot.getSize(), r.getSize());
154 Asserts.assertGreaterThanOrEqual(snapshot.getStartTime(), r.getStartTime());
155 Asserts.assertLessThanOrEqual(snapshot.getStopTime(), r.getStopTime());
156 Asserts.assertGreaterThanOrEqual(snapshot.getDuration(), Duration.ZERO);
157 assertStaticOptions(snapshot);
158 try (InputStream is = snapshot.getStream(null, null)) {
159 Asserts.assertNotNull(is);
160 }
161
162 List<RecordedEvent> events = Events.fromRecording(snapshot);
163 Events.hasEvents(events);
164 Asserts.assertEquals(events.size(), 1);
165 Asserts.assertEquals(events.get(0).getEventType().getName(), SimpleEvent.class.getName());
166 }
167 }
168 }
169
170 private static void testEmpty() throws IOException {
171 FlightRecorder recorder = FlightRecorder.getFlightRecorder();
172 Instant before = Instant.now().minusNanos(1);
173 try (Recording snapshot = recorder.takeSnapshot()) {
174 Instant after = Instant.now().plusNanos(1);
175 Asserts.assertEquals(snapshot.getSize(), 0L);
176 Asserts.assertLessThan(before, snapshot.getStartTime());
177 Asserts.assertGreaterThan(after, snapshot.getStopTime());
178 Asserts.assertEquals(snapshot.getStartTime(), snapshot.getStopTime());
179 Asserts.assertEquals(snapshot.getDuration(), Duration.ZERO);
180 assertStaticOptions(snapshot);
181 Asserts.assertEquals(snapshot.getStream(null, null), null);
182 }
183 }
184
185 }