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bcb8c2cb | 1 | /******************************************************************************* |
6c230e50 | 2 | * Copyright (c) 2012, 2015 Ericsson |
bcb8c2cb PT |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Patrick Tasse - Initial API and implementation | |
738a2796 | 11 | * Marc-Andre Laperle - Add persistent index support |
bcb8c2cb PT |
12 | *******************************************************************************/ |
13 | ||
2bdf0193 | 14 | package org.eclipse.tracecompass.tmf.core.trace.text; |
bcb8c2cb PT |
15 | |
16 | import java.io.File; | |
17 | import java.io.IOException; | |
738a2796 | 18 | import java.nio.ByteBuffer; |
543e2b1e BH |
19 | import java.util.Collections; |
20 | import java.util.List; | |
bcb8c2cb PT |
21 | import java.util.regex.Matcher; |
22 | import java.util.regex.Pattern; | |
23 | ||
24 | import org.eclipse.core.resources.IProject; | |
25 | import org.eclipse.core.resources.IResource; | |
26 | import org.eclipse.core.runtime.IStatus; | |
27 | import org.eclipse.core.runtime.Status; | |
6c230e50 | 28 | import org.eclipse.jdt.annotation.NonNull; |
4c4e2816 | 29 | import org.eclipse.jdt.annotation.Nullable; |
2bdf0193 AM |
30 | import org.eclipse.tracecompass.internal.tmf.core.Activator; |
31 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
32 | import org.eclipse.tracecompass.tmf.core.exceptions.TmfTraceException; | |
33 | import org.eclipse.tracecompass.tmf.core.io.BufferedRandomAccessFile; | |
0bc16991 MAL |
34 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalHandler; |
35 | import org.eclipse.tracecompass.tmf.core.signal.TmfTraceRangeUpdatedSignal; | |
2bdf0193 AM |
36 | import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimestamp; |
37 | import org.eclipse.tracecompass.tmf.core.trace.ITmfContext; | |
2bdf0193 | 38 | import org.eclipse.tracecompass.tmf.core.trace.TmfTrace; |
d26d67f5 | 39 | import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; |
2bdf0193 AM |
40 | import org.eclipse.tracecompass.tmf.core.trace.TraceValidationStatus; |
41 | import org.eclipse.tracecompass.tmf.core.trace.indexer.ITmfPersistentlyIndexable; | |
42 | import org.eclipse.tracecompass.tmf.core.trace.indexer.ITmfTraceIndexer; | |
43 | import org.eclipse.tracecompass.tmf.core.trace.indexer.TmfBTreeTraceIndexer; | |
44 | import org.eclipse.tracecompass.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint; | |
45 | import org.eclipse.tracecompass.tmf.core.trace.indexer.checkpoint.TmfCheckpoint; | |
46 | import org.eclipse.tracecompass.tmf.core.trace.location.ITmfLocation; | |
47 | import org.eclipse.tracecompass.tmf.core.trace.location.TmfLongLocation; | |
bcb8c2cb PT |
48 | |
49 | /** | |
50 | * Extension of TmfTrace for handling of line-based text traces parsed using | |
51 | * regular expressions. Each line that matches the first line pattern indicates | |
52 | * the start of a new event. The subsequent lines can contain additional | |
53 | * information that is added to the current event. | |
54 | * | |
55 | * @param <T> | |
56 | * TmfEvent class returned by this trace | |
bcb8c2cb | 57 | */ |
5733be39 | 58 | public abstract class TextTrace<T extends TextTraceEvent> extends TmfTrace implements ITmfPersistentlyIndexable { |
bcb8c2cb | 59 | |
661becf8 | 60 | private static final TmfLongLocation NULL_LOCATION = new TmfLongLocation(-1L); |
bcb8c2cb PT |
61 | private static final int MAX_LINES = 100; |
62 | private static final int MAX_CONFIDENCE = 100; | |
63 | ||
64 | /** The default separator used for multi-line fields */ | |
65 | protected static final String SEPARATOR = " | "; //$NON-NLS-1$ | |
66 | ||
67 | /** The text file */ | |
68 | protected BufferedRandomAccessFile fFile; | |
69 | ||
70 | /** | |
71 | * Constructor | |
72 | */ | |
73 | public TextTrace() { | |
74 | } | |
75 | ||
76 | /** | |
77 | * {@inheritDoc} | |
78 | * <p> | |
543e2b1e BH |
79 | * The default implementation computes the confidence as the sum of weighted |
80 | * values of the first 100 lines of the file which match any of the provided | |
81 | * validation patterns. For each matching line a weighted value between 1.5 | |
82 | * and 2.0 is assigned based on the group count of the matching patterns. | |
83 | * The higher the group count, the closer the weighted value will be to 2.0. | |
bcb8c2cb PT |
84 | */ |
85 | @Override | |
86 | public IStatus validate(IProject project, String path) { | |
87 | File file = new File(path); | |
88 | if (!file.exists()) { | |
89 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "File not found: " + path); //$NON-NLS-1$ | |
90 | } | |
91 | if (!file.isFile()) { | |
92 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Not a file. It's a directory: " + path); //$NON-NLS-1$ | |
93 | } | |
d26d67f5 BH |
94 | try { |
95 | if (!TmfTraceUtils.isText(file)) { | |
96 | return new TraceValidationStatus(0, Activator.PLUGIN_ID); | |
97 | } | |
98 | } catch (IOException e) { | |
99 | Activator.logError("Error validating file: " + path, e); //$NON-NLS-1$ | |
100 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "IOException validating file: " + path, e); //$NON-NLS-1$ | |
101 | } | |
bcb8c2cb PT |
102 | int confidence = 0; |
103 | try (BufferedRandomAccessFile rafile = new BufferedRandomAccessFile(path, "r")) { //$NON-NLS-1$ | |
104 | int lineCount = 0; | |
918551aa | 105 | double matches = 0.0; |
bcb8c2cb | 106 | String line = rafile.getNextLine(); |
543e2b1e | 107 | List<Pattern> validationPatterns = getValidationPatterns(); |
bcb8c2cb | 108 | while ((line != null) && (lineCount++ < MAX_LINES)) { |
6c230e50 | 109 | line = preProcessLine(line); |
543e2b1e BH |
110 | for(Pattern pattern : validationPatterns) { |
111 | Matcher matcher = pattern.matcher(line); | |
112 | if (matcher.matches()) { | |
113 | int groupCount = matcher.groupCount(); | |
114 | matches += (1.0 + groupCount / ((double) groupCount + 1)); | |
115 | } | |
bcb8c2cb | 116 | } |
918551aa | 117 | confidence = (int) (MAX_CONFIDENCE * matches / lineCount); |
bcb8c2cb PT |
118 | line = rafile.getNextLine(); |
119 | } | |
120 | } catch (IOException e) { | |
121 | Activator.logError("Error validating file: " + path, e); //$NON-NLS-1$ | |
122 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "IOException validating file: " + path, e); //$NON-NLS-1$ | |
123 | } | |
124 | ||
125 | return new TraceValidationStatus(confidence, Activator.PLUGIN_ID); | |
126 | ||
127 | } | |
bcb8c2cb PT |
128 | @Override |
129 | public void initTrace(IResource resource, String path, Class<? extends ITmfEvent> type) throws TmfTraceException { | |
130 | super.initTrace(resource, path, type); | |
0bc16991 MAL |
131 | initFile(); |
132 | } | |
133 | ||
134 | private void initFile() throws TmfTraceException { | |
135 | closeFile(); | |
bcb8c2cb PT |
136 | try { |
137 | fFile = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$ | |
138 | } catch (IOException e) { | |
139 | throw new TmfTraceException(e.getMessage(), e); | |
140 | } | |
141 | } | |
142 | ||
143 | @Override | |
144 | public synchronized void dispose() { | |
145 | super.dispose(); | |
0bc16991 MAL |
146 | closeFile(); |
147 | } | |
148 | ||
149 | private void closeFile() { | |
bcb8c2cb PT |
150 | if (fFile != null) { |
151 | try { | |
152 | fFile.close(); | |
153 | } catch (IOException e) { | |
154 | } finally { | |
155 | fFile = null; | |
156 | } | |
157 | } | |
158 | } | |
159 | ||
160 | @Override | |
5ece050b | 161 | public synchronized TextTraceContext seekEvent(ITmfLocation location) { |
bcb8c2cb PT |
162 | TextTraceContext context = new TextTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); |
163 | if (NULL_LOCATION.equals(location) || fFile == null) { | |
164 | return context; | |
165 | } | |
166 | try { | |
167 | if (location == null) { | |
168 | fFile.seek(0); | |
169 | } else if (location.getLocationInfo() instanceof Long) { | |
170 | fFile.seek((Long) location.getLocationInfo()); | |
171 | } | |
172 | long rawPos = fFile.getFilePointer(); | |
173 | String line = fFile.getNextLine(); | |
174 | while (line != null) { | |
6c230e50 | 175 | line = preProcessLine(line); |
bcb8c2cb | 176 | Matcher matcher = getFirstLinePattern().matcher(line); |
13797536 MK |
177 | if (matcher.matches()) { |
178 | setupContext(context, rawPos, line, matcher); | |
bcb8c2cb PT |
179 | return context; |
180 | } | |
181 | rawPos = fFile.getFilePointer(); | |
182 | line = fFile.getNextLine(); | |
183 | } | |
184 | return context; | |
185 | } catch (IOException e) { | |
186 | Activator.logError("Error seeking file: " + getPath(), e); //$NON-NLS-1$ | |
187 | return context; | |
188 | } | |
189 | } | |
190 | ||
13797536 MK |
191 | private void setupContext(TextTraceContext context, long rawPos, String line, Matcher matcher) throws IOException { |
192 | context.setLocation(new TmfLongLocation(rawPos)); | |
193 | context.firstLineMatcher = matcher; | |
194 | context.firstLine = line; | |
195 | context.nextLineLocation = fFile.getFilePointer(); | |
196 | } | |
197 | ||
bcb8c2cb | 198 | @Override |
5ece050b | 199 | public synchronized TextTraceContext seekEvent(double ratio) { |
bcb8c2cb PT |
200 | if (fFile == null) { |
201 | return new TextTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
202 | } | |
203 | try { | |
a0789537 | 204 | long pos = Math.round(ratio * fFile.length()); |
bcb8c2cb PT |
205 | while (pos > 0) { |
206 | fFile.seek(pos - 1); | |
207 | if (fFile.read() == '\n') { | |
208 | break; | |
209 | } | |
210 | pos--; | |
211 | } | |
212 | ITmfLocation location = new TmfLongLocation(Long.valueOf(pos)); | |
5ece050b | 213 | TextTraceContext context = seekEvent(location); |
bcb8c2cb PT |
214 | context.setRank(ITmfContext.UNKNOWN_RANK); |
215 | return context; | |
216 | } catch (IOException e) { | |
217 | Activator.logError("Error seeking file: " + getPath(), e); //$NON-NLS-1$ | |
218 | return new TextTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
219 | } | |
220 | } | |
221 | ||
222 | @Override | |
223 | public double getLocationRatio(ITmfLocation location) { | |
224 | if (fFile == null) { | |
225 | return 0; | |
226 | } | |
227 | try { | |
228 | long length = fFile.length(); | |
229 | if (length == 0) { | |
230 | return 0; | |
231 | } | |
232 | if (location.getLocationInfo() instanceof Long) { | |
233 | return (double) ((Long) location.getLocationInfo()) / length; | |
234 | } | |
235 | } catch (IOException e) { | |
236 | Activator.logError("Error reading file: " + getPath(), e); //$NON-NLS-1$ | |
237 | } | |
238 | return 0; | |
239 | } | |
240 | ||
241 | @Override | |
242 | public ITmfLocation getCurrentLocation() { | |
243 | return null; | |
244 | } | |
245 | ||
246 | @Override | |
5ece050b AM |
247 | public TextTraceEvent parseEvent(ITmfContext tmfContext) { |
248 | TextTraceContext context = seekEvent(tmfContext.getLocation()); | |
bcb8c2cb PT |
249 | return parse(context); |
250 | } | |
251 | ||
252 | @Override | |
4c4e2816 | 253 | public synchronized @Nullable T getNext(ITmfContext context) { |
5ece050b AM |
254 | if (!(context instanceof TextTraceContext)) { |
255 | throw new IllegalArgumentException(); | |
256 | } | |
257 | TextTraceContext savedContext = new TextTraceContext(context.getLocation(), context.getRank()); | |
4c4e2816 | 258 | @Nullable T event = parse((TextTraceContext) context); |
bcb8c2cb | 259 | if (event != null) { |
5904c11e | 260 | updateAttributes(savedContext, event); |
bcb8c2cb PT |
261 | context.increaseRank(); |
262 | } | |
263 | return event; | |
264 | } | |
265 | ||
266 | /** | |
267 | * Parse the next event. The context is advanced. | |
268 | * | |
269 | * @param tmfContext | |
270 | * the context | |
271 | * @return the next event or null | |
272 | */ | |
4c4e2816 | 273 | protected synchronized @Nullable T parse(TextTraceContext tmfContext) { |
bcb8c2cb PT |
274 | if (fFile == null) { |
275 | return null; | |
276 | } | |
5ece050b | 277 | TextTraceContext context = tmfContext; |
bcb8c2cb PT |
278 | if (context.getLocation() == null || !(context.getLocation().getLocationInfo() instanceof Long) || NULL_LOCATION.equals(context.getLocation())) { |
279 | return null; | |
280 | } | |
281 | ||
282 | T event = parseFirstLine(context.firstLineMatcher, context.firstLine); | |
283 | ||
284 | try { | |
285 | if (fFile.getFilePointer() != context.nextLineLocation) { | |
286 | fFile.seek(context.nextLineLocation); | |
287 | } | |
288 | long rawPos = fFile.getFilePointer(); | |
289 | String line = fFile.getNextLine(); | |
290 | while (line != null) { | |
6c230e50 | 291 | line = preProcessLine(line); |
bcb8c2cb | 292 | Matcher matcher = getFirstLinePattern().matcher(line); |
13797536 MK |
293 | if (matcher.matches()) { |
294 | setupContext(context, rawPos, line, matcher); | |
bcb8c2cb PT |
295 | return event; |
296 | } | |
297 | parseNextLine(event, line); | |
298 | rawPos = fFile.getFilePointer(); | |
299 | line = fFile.getNextLine(); | |
300 | } | |
301 | } catch (IOException e) { | |
302 | Activator.logError("Error reading file: " + getPath(), e); //$NON-NLS-1$ | |
303 | } | |
304 | ||
305 | context.setLocation(NULL_LOCATION); | |
306 | return event; | |
307 | } | |
308 | ||
6c230e50 BH |
309 | /** |
310 | * Pre-processes the input line. The default implementation returns the | |
311 | * input line. | |
312 | * | |
313 | * @param line | |
314 | * non-null input string | |
315 | * @return the pre-processed input line | |
316 | */ | |
317 | @NonNull | |
318 | protected String preProcessLine(@NonNull String line) { | |
319 | return line; | |
320 | } | |
321 | ||
bcb8c2cb PT |
322 | /** |
323 | * Gets the first line pattern. | |
324 | * | |
325 | * @return The first line pattern | |
326 | */ | |
327 | protected abstract Pattern getFirstLinePattern(); | |
328 | ||
329 | /** | |
6b44794a MK |
330 | * Parses the first line data and returns a new event. When constructing the |
331 | * event, the concrete trace should use the trace's timestamp transform to | |
332 | * create the timestamp, by either transforming the parsed time value | |
333 | * directly or by using the method {@link #createTimestamp(long)}. | |
bcb8c2cb PT |
334 | * |
335 | * @param matcher | |
336 | * The matcher | |
337 | * @param line | |
338 | * The line to parse | |
339 | * @return The parsed event | |
340 | */ | |
341 | protected abstract T parseFirstLine(Matcher matcher, String line); | |
342 | ||
343 | /** | |
344 | * Parses the next line data for the current event. | |
345 | * | |
346 | * @param event | |
347 | * The current event being parsed | |
348 | * @param line | |
349 | * The line to parse | |
350 | */ | |
351 | protected abstract void parseNextLine(T event, String line); | |
352 | ||
543e2b1e BH |
353 | /** |
354 | * Returns a ordered list of validation patterns that will be used in | |
355 | * the default {@link #validate(IProject, String)} method to match | |
356 | * the first 100 to compute the confidence level | |
357 | * | |
358 | * @return collection of patterns to validate against | |
543e2b1e BH |
359 | */ |
360 | protected List<Pattern> getValidationPatterns() { | |
361 | return Collections.singletonList(getFirstLinePattern()); | |
362 | } | |
363 | ||
bcb8c2cb PT |
364 | // ------------------------------------------------------------------------ |
365 | // Helper methods | |
366 | // ------------------------------------------------------------------------ | |
367 | ||
368 | /** | |
369 | * Strip quotes surrounding a string | |
370 | * | |
371 | * @param input | |
372 | * The input string | |
373 | * @return The string without quotes | |
374 | */ | |
375 | protected static String replaceQuotes(String input) { | |
376 | String out = input.replaceAll("^\"|(\"\\s*)$", ""); //$NON-NLS-1$//$NON-NLS-2$ | |
377 | return out; | |
378 | } | |
379 | ||
380 | /** | |
381 | * Strip brackets surrounding a string | |
382 | * | |
383 | * @param input | |
384 | * The input string | |
385 | * @return The string without brackets | |
386 | */ | |
387 | protected static String replaceBrackets(String input) { | |
388 | String out = input.replaceAll("^\\{|(\\}\\s*)$", ""); //$NON-NLS-1$//$NON-NLS-2$ | |
389 | return out; | |
390 | } | |
391 | ||
738a2796 MAL |
392 | private static int fCheckpointSize = -1; |
393 | ||
394 | @Override | |
395 | public synchronized int getCheckpointSize() { | |
396 | if (fCheckpointSize == -1) { | |
397 | TmfCheckpoint c = new TmfCheckpoint(TmfTimestamp.ZERO, new TmfLongLocation(0L), 0); | |
398 | ByteBuffer b = ByteBuffer.allocate(ITmfCheckpoint.MAX_SERIALIZE_SIZE); | |
399 | b.clear(); | |
400 | c.serialize(b); | |
401 | fCheckpointSize = b.position(); | |
402 | } | |
403 | ||
404 | return fCheckpointSize; | |
405 | } | |
406 | ||
407 | @Override | |
408 | protected ITmfTraceIndexer createIndexer(int interval) { | |
409 | return new TmfBTreeTraceIndexer(this, interval); | |
410 | } | |
411 | ||
412 | @Override | |
413 | public ITmfLocation restoreLocation(ByteBuffer bufferIn) { | |
414 | return new TmfLongLocation(bufferIn); | |
415 | } | |
0bc16991 MAL |
416 | |
417 | @TmfSignalHandler | |
418 | @Override | |
419 | public void traceRangeUpdated(TmfTraceRangeUpdatedSignal signal) { | |
420 | if (signal.getTrace() == this) { | |
421 | try { | |
422 | synchronized (this) { | |
423 | // Reset the file handle in case it has reached the end of the | |
424 | // file already. Otherwise, it will not be able to read new data | |
425 | // pass the previous end. | |
426 | initFile(); | |
427 | } | |
428 | } catch (TmfTraceException e) { | |
429 | Activator.logError(e.getLocalizedMessage(), e); | |
430 | } | |
431 | } | |
432 | super.traceRangeUpdated(signal); | |
433 | } | |
bcb8c2cb | 434 | } |