52850
|
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.BufferedInputStream;
|
|
29 |
import java.io.DataInputStream;
|
|
30 |
import java.io.File;
|
|
31 |
import java.io.FileInputStream;
|
|
32 |
import java.io.FileOutputStream;
|
|
33 |
import java.io.IOException;
|
|
34 |
import java.io.InputStream;
|
|
35 |
import java.io.PrintStream;
|
|
36 |
import java.nio.file.Files;
|
|
37 |
import java.nio.file.InvalidPathException;
|
|
38 |
import java.nio.file.Path;
|
|
39 |
import java.util.ArrayList;
|
|
40 |
import java.util.Deque;
|
|
41 |
import java.util.List;
|
|
42 |
|
|
43 |
import jdk.jfr.internal.consumer.ChunkHeader;
|
|
44 |
import jdk.jfr.internal.consumer.RecordingInput;
|
|
45 |
|
|
46 |
final class Disassemble extends Command {
|
|
47 |
|
|
48 |
@Override
|
|
49 |
public String getName() {
|
|
50 |
return "disassemble";
|
|
51 |
}
|
|
52 |
|
|
53 |
@Override
|
|
54 |
public List<String> getOptionSyntax() {
|
|
55 |
List<String> list = new ArrayList<>();
|
|
56 |
list.add("[--output <directory>]");
|
|
57 |
list.add("[--max-chunks <chunks>]");
|
|
58 |
list.add("[--max-size <size>]");
|
|
59 |
list.add("<file>");
|
|
60 |
return list;
|
|
61 |
}
|
|
62 |
|
|
63 |
@Override
|
|
64 |
public void displayOptionUsage(PrintStream stream) {
|
|
65 |
stream.println(" --output <directory> The location to write the disassembled file,");
|
|
66 |
stream.println(" by default the current directory");
|
|
67 |
stream.println("");
|
|
68 |
stream.println(" --max-chunks <chunks> Maximum number of chunks per disassembled file,");
|
|
69 |
stream.println(" by default 5. The chunk size varies, but is ");
|
|
70 |
stream.println(" typically around 15 MB.");
|
|
71 |
stream.println("");
|
|
72 |
stream.println(" --max-size <size> Maximum number of bytes per file.");
|
|
73 |
stream.println("");
|
|
74 |
stream.println(" <file> Location of the recording file (.jfr)");
|
|
75 |
}
|
|
76 |
|
|
77 |
@Override
|
|
78 |
public String getDescription() {
|
|
79 |
return "Disassamble a recording file into smaller files/chunks";
|
|
80 |
}
|
|
81 |
|
|
82 |
@Override
|
|
83 |
public void execute(Deque<String> options) throws UserSyntaxException, UserDataException {
|
|
84 |
if (options.isEmpty()) {
|
|
85 |
throw new UserSyntaxException("missing file");
|
|
86 |
}
|
|
87 |
Path file = getJFRInputFile(options);
|
|
88 |
int maxChunks = Integer.MAX_VALUE;
|
|
89 |
int maxsize = Integer.MAX_VALUE;
|
|
90 |
String output = System.getProperty("user.dir");
|
|
91 |
int optionCount = options.size();
|
|
92 |
while (optionCount > 0) {
|
|
93 |
if (acceptOption(options, "--output")) {
|
|
94 |
output = options.pop();
|
|
95 |
}
|
|
96 |
if (acceptOption(options, "--max-size")) {
|
|
97 |
String value = options.pop();
|
|
98 |
try {
|
|
99 |
maxsize = Integer.parseInt(value);
|
|
100 |
if (maxsize < 1) {
|
|
101 |
throw new UserDataException("max size must be at least 1");
|
|
102 |
}
|
|
103 |
} catch (NumberFormatException nfe) {
|
|
104 |
throw new UserDataException("not a valid value for --max-size.");
|
|
105 |
}
|
|
106 |
}
|
|
107 |
if (acceptOption(options, "--max-chunks")) {
|
|
108 |
String value = options.pop();
|
|
109 |
try {
|
|
110 |
maxChunks = Integer.parseInt(value);
|
|
111 |
if (maxChunks < 1) {
|
|
112 |
throw new UserDataException("max chunks must be at least 1.");
|
|
113 |
}
|
|
114 |
} catch (NumberFormatException nfe) {
|
|
115 |
throw new UserDataException("not a valid value for --max-size.");
|
|
116 |
}
|
|
117 |
}
|
|
118 |
if (optionCount == options.size()) {
|
|
119 |
// No progress made
|
|
120 |
throw new UserSyntaxException("unknown option " + options.peek());
|
|
121 |
}
|
|
122 |
optionCount = options.size();
|
|
123 |
}
|
|
124 |
Path outputPath = getDirectory(output);
|
|
125 |
|
|
126 |
println();
|
|
127 |
println("Examining recording " + file + " ...");
|
|
128 |
List<Long> sizes;
|
|
129 |
if (maxsize != Integer.MAX_VALUE && maxChunks == Integer.MAX_VALUE) {
|
|
130 |
try {
|
|
131 |
long fileSize = Files.size(file);
|
|
132 |
if (maxsize >=fileSize) {
|
|
133 |
println();
|
|
134 |
println("File size (" + fileSize +") does not exceed max size (" + maxsize + ")");
|
|
135 |
return;
|
|
136 |
}
|
|
137 |
} catch (IOException e) {
|
|
138 |
throw new UserDataException("unexpected i/o error when determining file size" + e.getMessage());
|
|
139 |
}
|
|
140 |
}
|
|
141 |
if (maxsize == Integer.MAX_VALUE && maxChunks == Integer.MAX_VALUE) {
|
|
142 |
maxChunks = 5;
|
|
143 |
}
|
|
144 |
|
|
145 |
try {
|
|
146 |
sizes = findChunkSizes(file);
|
|
147 |
} catch (IOException e) {
|
|
148 |
throw new UserDataException("unexpected i/o error. " + e.getMessage());
|
|
149 |
}
|
|
150 |
if (maxsize == Integer.MAX_VALUE == sizes.size() <= maxChunks) {
|
|
151 |
throw new UserDataException("number of chunks in recording (" + sizes.size() + ") doesn't exceed max chunks (" + maxChunks + ")");
|
|
152 |
}
|
|
153 |
println();
|
|
154 |
if (sizes.size() > 0) {
|
|
155 |
List<Long> combinedSizes = combineChunkSizes(sizes, maxChunks, maxsize);
|
|
156 |
print("File consists of " + sizes.size() + " chunks. The recording will be split into ");
|
|
157 |
println(combinedSizes.size() + " files");
|
|
158 |
println();
|
|
159 |
splitFile(outputPath, file, combinedSizes);
|
|
160 |
} else {
|
|
161 |
throw new UserDataException("no JFR chunks found in file.");
|
|
162 |
}
|
|
163 |
}
|
|
164 |
|
|
165 |
private List<Long> findChunkSizes(Path p) throws IOException {
|
|
166 |
try (RecordingInput input = new RecordingInput(p.toFile())) {
|
|
167 |
List<Long> sizes = new ArrayList<>();
|
|
168 |
ChunkHeader ch = new ChunkHeader(input);
|
|
169 |
sizes.add(ch.getSize());
|
|
170 |
while (!ch.isLastChunk()) {
|
|
171 |
ch = ch.nextHeader();
|
|
172 |
sizes.add(ch.getSize());
|
|
173 |
}
|
|
174 |
return sizes;
|
|
175 |
}
|
|
176 |
}
|
|
177 |
|
|
178 |
private List<Long> combineChunkSizes(List<Long> sizes, int maxChunks, long maxSize) {
|
|
179 |
List<Long> reduced = new ArrayList<Long>();
|
|
180 |
int chunks = 1;
|
|
181 |
long fileSize = sizes.get(0);
|
|
182 |
for (int i = 1; i < sizes.size(); i++) {
|
|
183 |
long size = sizes.get(i);
|
|
184 |
if (fileSize + size > maxSize) {
|
|
185 |
reduced.add(fileSize);
|
|
186 |
chunks = 1;
|
|
187 |
fileSize = size;
|
|
188 |
continue;
|
|
189 |
}
|
|
190 |
fileSize += size;
|
|
191 |
if (chunks == maxChunks) {
|
|
192 |
reduced.add(fileSize);
|
|
193 |
fileSize = 0;
|
|
194 |
chunks = 1;
|
|
195 |
continue;
|
|
196 |
}
|
|
197 |
chunks++;
|
|
198 |
}
|
|
199 |
if (fileSize != 0) {
|
|
200 |
reduced.add(fileSize);
|
|
201 |
}
|
|
202 |
return reduced;
|
|
203 |
}
|
|
204 |
|
|
205 |
private void splitFile(Path directory, Path file, List<Long> splitPositions) throws UserDataException {
|
|
206 |
int padAmountZeros = String.valueOf(splitPositions.size() - 1).length();
|
|
207 |
String fileName = file.getFileName().toString();
|
|
208 |
String fileFormatter = fileName.subSequence(0, fileName.length() - 4) + "_%0" + padAmountZeros + "d.jfr";
|
|
209 |
for (int i = 0; i < splitPositions.size(); i++) {
|
|
210 |
String formattedFilename = String.format(fileFormatter, i);
|
|
211 |
try {
|
|
212 |
Path p = directory.resolve(formattedFilename);
|
|
213 |
if (Files.exists(p)) {
|
|
214 |
throw new UserDataException("can't create disassembled file " + p + ", a file with that name already exist");
|
|
215 |
}
|
|
216 |
} catch (InvalidPathException ipe) {
|
|
217 |
throw new UserDataException("can't construct path with filename" + formattedFilename);
|
|
218 |
}
|
|
219 |
}
|
|
220 |
|
|
221 |
try (DataInputStream stream = new DataInputStream(new BufferedInputStream(new FileInputStream(file.toFile())))) {
|
|
222 |
for (int i = 0; i < splitPositions.size(); i++) {
|
|
223 |
Long l = splitPositions.get(i);
|
|
224 |
byte[] bytes = readBytes(stream, l.intValue());
|
|
225 |
String formattedFilename = String.format(fileFormatter, i);
|
|
226 |
Path p = directory.resolve(formattedFilename);
|
|
227 |
File splittedFile = p.toFile();
|
|
228 |
println("Writing " + splittedFile + " ... " + bytes.length);
|
|
229 |
FileOutputStream fos = new FileOutputStream(splittedFile);
|
|
230 |
fos.write(bytes);
|
|
231 |
fos.close();
|
|
232 |
}
|
|
233 |
} catch (IOException ioe) {
|
|
234 |
throw new UserDataException("i/o error writing file " + file);
|
|
235 |
}
|
|
236 |
}
|
|
237 |
|
|
238 |
private byte[] readBytes(InputStream stream, int count) throws UserDataException, IOException {
|
|
239 |
byte[] data = new byte[count];
|
|
240 |
int totalRead = 0;
|
|
241 |
while (totalRead < data.length) {
|
|
242 |
int read = stream.read(data, totalRead, data.length - totalRead);
|
|
243 |
if (read == -1) {
|
|
244 |
throw new UserDataException("unexpected end of data");
|
|
245 |
}
|
|
246 |
totalRead += read;
|
|
247 |
}
|
|
248 |
return data;
|
|
249 |
}
|
|
250 |
}
|