1 /*
2 * Copyright (c) 2016, 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.internal.tool;
27
28 import java.io.IOException;
29 import java.io.PrintStream;
30 import java.nio.file.Path;
31 import java.time.Instant;
32 import java.time.ZoneOffset;
33 import java.time.format.DateTimeFormatter;
34 import java.util.ArrayList;
35 import java.util.Collections;
36 import java.util.Deque;
37 import java.util.HashMap;
38 import java.util.List;
39 import java.util.Locale;
40
41 import jdk.jfr.EventType;
42 import jdk.jfr.internal.MetadataDescriptor;
43 import jdk.jfr.internal.Type;
44 import jdk.jfr.internal.consumer.ChunkHeader;
45 import jdk.jfr.internal.consumer.RecordingInput;
46
47 final class Summary extends Command {
48 private final DateTimeFormatter DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withLocale(Locale.UK).withZone(ZoneOffset.UTC);
49
50 @Override
51 public String getName() {
52 return "summary";
53 }
54
55 private static class Statistics {
56 Statistics(String name) {
57 this.name = name;
58 }
59 String name;
60 long count;
61 long size;
62 }
63
64 @Override
65 public List<String> getOptionSyntax() {
66 return Collections.singletonList("<file>");
67 }
68
69 @Override
70 public void displayOptionUsage(PrintStream stream) {
71 stream.println(" <file> Location of the recording file (.jfr) to display information about");
72 }
73
74 @Override
75 public String getDescription() {
76 return "Display general information about a recording file (.jfr)";
77 }
78
79 @Override
80 public void execute(Deque<String> options) throws UserSyntaxException, UserDataException {
81 ensureMaxArgumentCount(options, 1);
82 Path p = getJFRInputFile(options);
83 try {
84 printInformation(p);
85 } catch (IOException e) {
86 couldNotReadError(p, e);
87 }
88 }
89
90 private void printInformation(Path p) throws IOException {
91 long totalDuration = 0;
92 long chunks = 0;
93
94 try (RecordingInput input = new RecordingInput(p.toFile())) {
95 ChunkHeader first = new ChunkHeader(input);
96 ChunkHeader ch = first;
97 String eventPrefix = Type.EVENT_NAME_PREFIX;
98 if (first.getMajor() == 1) {
99 eventPrefix = "com.oracle.jdk.";
100 }
101 HashMap<Long, Statistics> stats = new HashMap<>();
102 stats.put(0L, new Statistics(eventPrefix + "Metadata"));
103 stats.put(1L, new Statistics(eventPrefix + "CheckPoint"));
104 int minWidth = 0;
105 while (true) {
106 long chunkEnd = ch.getEnd();
107 MetadataDescriptor md = ch.readMetadata();
108
109 for (EventType eventType : md.getEventTypes()) {
110 stats.computeIfAbsent(eventType.getId(), (e) -> new Statistics(eventType.getName()));
111 minWidth = Math.max(minWidth, eventType.getName().length());
112 }
113
114 totalDuration += ch.getDurationNanos();
115 chunks++;
116 input.position(ch.getEventStart());
117 while (input.position() < chunkEnd) {
118 long pos = input.position();
119 int size = input.readInt();
120 long eventTypeId = input.readLong();
121 Statistics s = stats.get(eventTypeId);
122 if (s != null) {
123 s.count++;
124 s.size += size;
125 }
126 input.position(pos + size);
127 }
128 if (ch.isLastChunk()) {
129 break;
130 }
131 ch = ch.nextHeader();
132 }
133 println();
134 long epochSeconds = first.getStartNanos() / 1_000_000_000L;
135 long adjustNanos = first.getStartNanos() - epochSeconds * 1_000_000_000L;
136 println(" Version: " + first.getMajor() + "." + first.getMinor());
137 println(" Chunks: " + chunks);
138 println(" Start: " + DATE_FORMAT.format(Instant.ofEpochSecond(epochSeconds, adjustNanos)) + " (UTC)");
139 println(" Duration: " + (totalDuration + 500_000_000) / 1_000_000_000 + " s");
140
141 List<Statistics> statsList = new ArrayList<>(stats.values());
142 Collections.sort(statsList, (u, v) -> Long.compare(v.count, u.count));
143 println();
144 String header = " Count Size (bytes) ";
145 String typeHeader = " Event Type";
146 minWidth = Math.max(minWidth, typeHeader.length());
147 println(typeHeader + pad(minWidth - typeHeader.length(), ' ') + header);
148 println(pad(minWidth + header.length(), '='));
149 for (Statistics s : statsList) {
150 System.out.printf(" %-" + minWidth + "s%10d %12d\n", s.name, s.count, s.size);
151 }
152 }
153 }
154
155 private String pad(int count, char c) {
156 StringBuilder sb = new StringBuilder();
157 for (int i = 0; i < count; i++) {
158 sb.append(c);
159 }
160 return sb.toString();
161 }
162 }