Commit | Line | Data |
---|---|---|
6151d86c | 1 | /******************************************************************************* |
c8422608 | 2 | * Copyright (c) 2010, 2013 Ericsson |
6151d86c 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 | |
11 | *******************************************************************************/ | |
12 | ||
47aafe74 | 13 | package org.eclipse.linuxtools.tmf.core.parsers.custom; |
6151d86c PT |
14 | |
15 | import java.io.ByteArrayInputStream; | |
eb8ea213 | 16 | import java.io.File; |
6151d86c PT |
17 | import java.io.IOException; |
18 | import java.io.RandomAccessFile; | |
032ecd45 | 19 | import java.nio.ByteBuffer; |
6151d86c PT |
20 | |
21 | import javax.xml.parsers.DocumentBuilder; | |
22 | import javax.xml.parsers.DocumentBuilderFactory; | |
23 | import javax.xml.parsers.ParserConfigurationException; | |
eb8ea213 | 24 | |
6151d86c PT |
25 | import org.eclipse.core.resources.IProject; |
26 | import org.eclipse.core.resources.IResource; | |
a3db8436 AM |
27 | import org.eclipse.core.runtime.IStatus; |
28 | import org.eclipse.core.runtime.Status; | |
47aafe74 | 29 | import org.eclipse.linuxtools.internal.tmf.core.Activator; |
6151d86c | 30 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
6151d86c PT |
31 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
32 | import org.eclipse.linuxtools.tmf.core.io.BufferedRandomAccessFile; | |
47aafe74 AM |
33 | import org.eclipse.linuxtools.tmf.core.parsers.custom.CustomXmlTraceDefinition.InputAttribute; |
34 | import org.eclipse.linuxtools.tmf.core.parsers.custom.CustomXmlTraceDefinition.InputElement; | |
3bd46eef | 35 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; |
6151d86c PT |
36 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
37 | import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser; | |
6151d86c | 38 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
6151d86c | 39 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; |
cd43d683 | 40 | import org.eclipse.linuxtools.tmf.core.trace.TraceValidationStatus; |
032ecd45 | 41 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfPersistentlyIndexable; |
a3db8436 | 42 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfTraceIndexer; |
032ecd45 MAL |
43 | import org.eclipse.linuxtools.tmf.core.trace.indexer.TmfBTreeTraceIndexer; |
44 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint; | |
45 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.TmfCheckpoint; | |
a3db8436 AM |
46 | import org.eclipse.linuxtools.tmf.core.trace.location.ITmfLocation; |
47 | import org.eclipse.linuxtools.tmf.core.trace.location.TmfLongLocation; | |
6151d86c PT |
48 | import org.w3c.dom.Document; |
49 | import org.w3c.dom.Element; | |
50 | import org.w3c.dom.Node; | |
51 | import org.w3c.dom.NodeList; | |
52 | import org.xml.sax.EntityResolver; | |
53 | import org.xml.sax.ErrorHandler; | |
54 | import org.xml.sax.InputSource; | |
55 | import org.xml.sax.SAXException; | |
56 | import org.xml.sax.SAXParseException; | |
57 | ||
a0a88f65 AM |
58 | /** |
59 | * Trace object for custom XML trace parsers. | |
60 | * | |
61 | * @author Patrick Tassé | |
47aafe74 | 62 | * @since 3.0 |
a0a88f65 | 63 | */ |
032ecd45 | 64 | public class CustomXmlTrace extends TmfTrace implements ITmfEventParser, ITmfPersistentlyIndexable { |
6151d86c PT |
65 | |
66 | private static final TmfLongLocation NULL_LOCATION = new TmfLongLocation((Long) null); | |
67 | private static final int DEFAULT_CACHE_SIZE = 100; | |
cd43d683 PT |
68 | private static final int MAX_LINES = 100; |
69 | private static final int CONFIDENCE = 100; | |
6151d86c PT |
70 | |
71 | private final CustomXmlTraceDefinition fDefinition; | |
72 | private final CustomXmlEventType fEventType; | |
73 | private final InputElement fRecordInputElement; | |
74 | private BufferedRandomAccessFile fFile; | |
75 | ||
a0a88f65 AM |
76 | /** |
77 | * Basic constructor | |
78 | * | |
eb8ea213 MK |
79 | * @param definition |
80 | * Trace definition | |
a0a88f65 | 81 | */ |
6151d86c PT |
82 | public CustomXmlTrace(final CustomXmlTraceDefinition definition) { |
83 | fDefinition = definition; | |
84 | fEventType = new CustomXmlEventType(fDefinition); | |
85 | fRecordInputElement = getRecordInputElement(fDefinition.rootInputElement); | |
86 | setCacheSize(DEFAULT_CACHE_SIZE); | |
87 | } | |
88 | ||
a0a88f65 AM |
89 | /** |
90 | * Full constructor | |
91 | * | |
92 | * @param resource | |
93 | * Trace resource | |
94 | * @param definition | |
95 | * Trace definition | |
96 | * @param path | |
97 | * Path to the trace/log file | |
98 | * @param pageSize | |
99 | * Page size to use | |
100 | * @throws TmfTraceException | |
101 | * If the trace/log couldn't be opened | |
102 | */ | |
103 | public CustomXmlTrace(final IResource resource, | |
104 | final CustomXmlTraceDefinition definition, final String path, | |
105 | final int pageSize) throws TmfTraceException { | |
6151d86c PT |
106 | this(definition); |
107 | setCacheSize((pageSize > 0) ? pageSize : DEFAULT_CACHE_SIZE); | |
108 | initTrace(resource, path, CustomXmlEvent.class); | |
109 | } | |
110 | ||
111 | @Override | |
112 | public void initTrace(final IResource resource, final String path, final Class<? extends ITmfEvent> eventType) throws TmfTraceException { | |
113 | super.initTrace(resource, path, eventType); | |
114 | try { | |
115 | fFile = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$ | |
116 | } catch (IOException e) { | |
117 | throw new TmfTraceException(e.getMessage(), e); | |
118 | } | |
6151d86c PT |
119 | } |
120 | ||
121 | @Override | |
122 | public synchronized void dispose() { | |
123 | super.dispose(); | |
124 | if (fFile != null) { | |
125 | try { | |
126 | fFile.close(); | |
127 | } catch (IOException e) { | |
128 | } finally { | |
129 | fFile = null; | |
130 | } | |
131 | } | |
132 | } | |
133 | ||
b0422293 PT |
134 | @Override |
135 | public ITmfTraceIndexer getIndexer() { | |
136 | return super.getIndexer(); | |
137 | } | |
138 | ||
6151d86c PT |
139 | @Override |
140 | public synchronized TmfContext seekEvent(final ITmfLocation location) { | |
141 | final CustomXmlTraceContext context = new CustomXmlTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
142 | if (NULL_LOCATION.equals(location) || fFile == null) { | |
143 | return context; | |
144 | } | |
145 | try { | |
146 | if (location == null) { | |
147 | fFile.seek(0); | |
148 | } else if (location.getLocationInfo() instanceof Long) { | |
149 | fFile.seek((Long) location.getLocationInfo()); | |
150 | } | |
6151d86c PT |
151 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ |
152 | long rawPos = fFile.getFilePointer(); | |
cd43d683 PT |
153 | String line = fFile.getNextLine(); |
154 | while (line != null) { | |
6151d86c PT |
155 | final int idx = line.indexOf(recordElementStart); |
156 | if (idx != -1) { | |
157 | context.setLocation(new TmfLongLocation(rawPos + idx)); | |
158 | return context; | |
159 | } | |
160 | rawPos = fFile.getFilePointer(); | |
cd43d683 | 161 | line = fFile.getNextLine(); |
6151d86c PT |
162 | } |
163 | return context; | |
164 | } catch (final IOException e) { | |
47aafe74 | 165 | Activator.logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ |
6151d86c PT |
166 | return context; |
167 | } | |
168 | ||
169 | } | |
170 | ||
171 | @Override | |
172 | public synchronized TmfContext seekEvent(final double ratio) { | |
173 | if (fFile == null) { | |
174 | return new CustomTxtTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
175 | } | |
176 | try { | |
91f6e587 | 177 | long pos = Math.round(ratio * fFile.length()); |
6151d86c PT |
178 | while (pos > 0) { |
179 | fFile.seek(pos - 1); | |
180 | if (fFile.read() == '\n') { | |
181 | break; | |
182 | } | |
183 | pos--; | |
184 | } | |
185 | final ITmfLocation location = new TmfLongLocation(pos); | |
186 | final TmfContext context = seekEvent(location); | |
187 | context.setRank(ITmfContext.UNKNOWN_RANK); | |
188 | return context; | |
189 | } catch (final IOException e) { | |
47aafe74 | 190 | Activator.logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ |
6151d86c PT |
191 | return new CustomXmlTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); |
192 | } | |
193 | } | |
194 | ||
195 | @Override | |
196 | public synchronized double getLocationRatio(final ITmfLocation location) { | |
197 | if (fFile == null) { | |
198 | return 0; | |
199 | } | |
200 | try { | |
201 | if (location.getLocationInfo() instanceof Long) { | |
202 | return (double) ((Long) location.getLocationInfo()) / fFile.length(); | |
203 | } | |
204 | } catch (final IOException e) { | |
47aafe74 | 205 | Activator.logError("Error getting location ration. File: " + getPath(), e); //$NON-NLS-1$ |
6151d86c PT |
206 | } |
207 | return 0; | |
208 | } | |
209 | ||
210 | @Override | |
211 | public ITmfLocation getCurrentLocation() { | |
212 | // TODO Auto-generated method stub | |
213 | return null; | |
214 | } | |
215 | ||
216 | @Override | |
217 | public synchronized CustomXmlEvent parseEvent(final ITmfContext tmfContext) { | |
218 | ITmfContext context = seekEvent(tmfContext.getLocation()); | |
219 | return parse(context); | |
220 | } | |
221 | ||
222 | @Override | |
223 | public synchronized CustomXmlEvent getNext(final ITmfContext context) { | |
4c9f2944 | 224 | final ITmfContext savedContext = new TmfContext(context.getLocation(), context.getRank()); |
6151d86c PT |
225 | final CustomXmlEvent event = parse(context); |
226 | if (event != null) { | |
227 | updateAttributes(savedContext, event.getTimestamp()); | |
228 | context.increaseRank(); | |
229 | } | |
230 | return event; | |
231 | } | |
232 | ||
233 | private synchronized CustomXmlEvent parse(final ITmfContext tmfContext) { | |
234 | if (fFile == null) { | |
235 | return null; | |
236 | } | |
237 | if (!(tmfContext instanceof CustomXmlTraceContext)) { | |
238 | return null; | |
239 | } | |
240 | ||
241 | final CustomXmlTraceContext context = (CustomXmlTraceContext) tmfContext; | |
9cbe7899 | 242 | if (context.getLocation() == null || !(context.getLocation().getLocationInfo() instanceof Long) || NULL_LOCATION.equals(context.getLocation())) { |
6151d86c PT |
243 | return null; |
244 | } | |
245 | ||
246 | CustomXmlEvent event = null; | |
247 | try { | |
eb8ea213 | 248 | if (fFile.getFilePointer() != (Long) context.getLocation().getLocationInfo() + 1) |
6151d86c | 249 | { |
eb8ea213 | 250 | fFile.seek((Long) context.getLocation().getLocationInfo() + 1); // +1 is for the < |
6151d86c PT |
251 | } |
252 | final StringBuffer elementBuffer = new StringBuffer("<"); //$NON-NLS-1$ | |
253 | readElement(elementBuffer, fFile); | |
254 | final Element element = parseElementBuffer(elementBuffer); | |
255 | ||
256 | event = extractEvent(element, fRecordInputElement); | |
257 | ((StringBuffer) event.getContent().getValue()).append(elementBuffer); | |
258 | ||
cd43d683 | 259 | |
6151d86c PT |
260 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ |
261 | long rawPos = fFile.getFilePointer(); | |
cd43d683 PT |
262 | String line = fFile.getNextLine(); |
263 | while (line != null) { | |
6151d86c PT |
264 | final int idx = line.indexOf(recordElementStart); |
265 | if (idx != -1) { | |
266 | context.setLocation(new TmfLongLocation(rawPos + idx)); | |
267 | return event; | |
268 | } | |
269 | rawPos = fFile.getFilePointer(); | |
cd43d683 | 270 | line = fFile.getNextLine(); |
6151d86c PT |
271 | } |
272 | } catch (final IOException e) { | |
47aafe74 | 273 | Activator.logError("Error parsing event. File: " + getPath(), e); //$NON-NLS-1$ |
6151d86c PT |
274 | |
275 | } | |
276 | context.setLocation(NULL_LOCATION); | |
277 | return event; | |
278 | } | |
279 | ||
280 | private Element parseElementBuffer(final StringBuffer elementBuffer) { | |
281 | try { | |
282 | final DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); | |
283 | final DocumentBuilder db = dbf.newDocumentBuilder(); | |
284 | ||
285 | // The following allows xml parsing without access to the dtd | |
eb8ea213 | 286 | final EntityResolver resolver = new EntityResolver() { |
6151d86c | 287 | @Override |
eb8ea213 | 288 | public InputSource resolveEntity(final String publicId, final String systemId) { |
6151d86c PT |
289 | final String empty = ""; //$NON-NLS-1$ |
290 | final ByteArrayInputStream bais = new ByteArrayInputStream(empty.getBytes()); | |
291 | return new InputSource(bais); | |
292 | } | |
293 | }; | |
294 | db.setEntityResolver(resolver); | |
295 | ||
296 | // The following catches xml parsing exceptions | |
eb8ea213 | 297 | db.setErrorHandler(new ErrorHandler() { |
6151d86c PT |
298 | @Override |
299 | public void error(final SAXParseException saxparseexception) throws SAXException {} | |
eb8ea213 | 300 | |
6151d86c PT |
301 | @Override |
302 | public void warning(final SAXParseException saxparseexception) throws SAXException {} | |
eb8ea213 | 303 | |
6151d86c PT |
304 | @Override |
305 | public void fatalError(final SAXParseException saxparseexception) throws SAXException { | |
306 | throw saxparseexception; | |
eb8ea213 MK |
307 | } |
308 | }); | |
6151d86c PT |
309 | |
310 | final Document doc = db.parse(new ByteArrayInputStream(elementBuffer.toString().getBytes())); | |
311 | return doc.getDocumentElement(); | |
312 | } catch (final ParserConfigurationException e) { | |
47aafe74 | 313 | Activator.logError("Error parsing element buffer. File:" + getPath(), e); //$NON-NLS-1$ |
6151d86c | 314 | } catch (final SAXException e) { |
47aafe74 | 315 | Activator.logError("Error parsing element buffer. File:" + getPath(), e); //$NON-NLS-1$ |
6151d86c | 316 | } catch (final IOException e) { |
47aafe74 | 317 | Activator.logError("Error parsing element buffer. File: " + getPath(), e); //$NON-NLS-1$ |
6151d86c PT |
318 | } |
319 | return null; | |
320 | } | |
321 | ||
322 | private void readElement(final StringBuffer buffer, final RandomAccessFile raFile) { | |
323 | try { | |
324 | int numRead = 0; | |
325 | boolean startTagClosed = false; | |
326 | int i; | |
327 | while ((i = raFile.read()) != -1) { | |
328 | numRead++; | |
eb8ea213 | 329 | final char c = (char) i; |
6151d86c PT |
330 | buffer.append(c); |
331 | if (c == '"') { | |
332 | readQuote(buffer, raFile, '"'); | |
333 | } else if (c == '\'') { | |
334 | readQuote(buffer, raFile, '\''); | |
335 | } else if (c == '<') { | |
336 | readElement(buffer, raFile); | |
337 | } else if (c == '/' && numRead == 1) { | |
338 | break; // found "</" | |
339 | } else if (c == '-' && numRead == 3 && buffer.substring(buffer.length() - 3, buffer.length() - 1).equals("!-")) { //$NON-NLS-1$ | |
340 | readComment(buffer, raFile); // found "<!--" | |
341 | } else if (i == '>') { | |
342 | if (buffer.charAt(buffer.length() - 2) == '/') { | |
343 | break; // found "/>" | |
344 | } else if (startTagClosed) { | |
345 | break; // found "<...>...</...>" | |
346 | } | |
347 | else { | |
348 | startTagClosed = true; // found "<...>" | |
349 | } | |
350 | } | |
351 | } | |
352 | return; | |
353 | } catch (final IOException e) { | |
354 | return; | |
355 | } | |
356 | } | |
357 | ||
358 | private static void readQuote(final StringBuffer buffer, | |
359 | final RandomAccessFile raFile, final char eq) { | |
360 | try { | |
361 | int i; | |
362 | while ((i = raFile.read()) != -1) { | |
eb8ea213 | 363 | final char c = (char) i; |
6151d86c PT |
364 | buffer.append(c); |
365 | if (c == eq) | |
366 | { | |
367 | break; // found matching end-quote | |
368 | } | |
369 | } | |
370 | return; | |
371 | } catch (final IOException e) { | |
372 | return; | |
373 | } | |
374 | } | |
375 | ||
376 | private static void readComment(final StringBuffer buffer, | |
377 | final RandomAccessFile raFile) { | |
378 | try { | |
379 | int numRead = 0; | |
380 | int i; | |
381 | while ((i = raFile.read()) != -1) { | |
382 | numRead++; | |
eb8ea213 | 383 | final char c = (char) i; |
6151d86c PT |
384 | buffer.append(c); |
385 | if (c == '>' && numRead >= 2 && buffer.substring(buffer.length() - 3, buffer.length() - 1).equals("--")) //$NON-NLS-1$ | |
386 | { | |
387 | break; // found "-->" | |
388 | } | |
389 | } | |
390 | return; | |
391 | } catch (final IOException e) { | |
392 | return; | |
393 | } | |
394 | } | |
395 | ||
a0a88f65 AM |
396 | /** |
397 | * Parse an XML element. | |
398 | * | |
399 | * @param parentElement | |
400 | * The parent element | |
401 | * @param buffer | |
402 | * The contents to parse | |
403 | * @return The parsed content | |
404 | */ | |
6151d86c PT |
405 | public static StringBuffer parseElement(final Element parentElement, final StringBuffer buffer) { |
406 | final NodeList nodeList = parentElement.getChildNodes(); | |
407 | String separator = null; | |
408 | for (int i = 0; i < nodeList.getLength(); i++) { | |
409 | final Node node = nodeList.item(i); | |
410 | if (node.getNodeType() == Node.ELEMENT_NODE) { | |
411 | if (separator == null) { | |
412 | separator = " | "; //$NON-NLS-1$ | |
413 | } else { | |
414 | buffer.append(separator); | |
415 | } | |
416 | final Element element = (Element) node; | |
417 | if (!element.hasChildNodes()) { | |
418 | buffer.append(element.getNodeName()); | |
419 | } else if (element.getChildNodes().getLength() == 1 && element.getFirstChild().getNodeType() == Node.TEXT_NODE) { | |
420 | buffer.append(element.getNodeName() + ":" + element.getFirstChild().getNodeValue().trim()); //$NON-NLS-1$ | |
421 | } else { | |
422 | buffer.append(element.getNodeName()); | |
423 | buffer.append(" [ "); //$NON-NLS-1$ | |
424 | parseElement(element, buffer); | |
425 | buffer.append(" ]"); //$NON-NLS-1$ | |
426 | } | |
427 | } else if (node.getNodeType() == Node.TEXT_NODE) { | |
428 | if (node.getNodeValue().trim().length() != 0) { | |
429 | buffer.append(node.getNodeValue().trim()); | |
430 | } | |
431 | } | |
432 | } | |
433 | return buffer; | |
434 | } | |
435 | ||
a0a88f65 AM |
436 | /** |
437 | * Get an input element if it is a valid record input. If not, we will look | |
438 | * into its children for valid inputs. | |
439 | * | |
440 | * @param inputElement | |
441 | * The main element to check for. | |
442 | * @return The record element | |
443 | */ | |
6151d86c PT |
444 | public InputElement getRecordInputElement(final InputElement inputElement) { |
445 | if (inputElement.logEntry) { | |
446 | return inputElement; | |
447 | } else if (inputElement.childElements != null) { | |
448 | for (final InputElement childInputElement : inputElement.childElements) { | |
449 | final InputElement recordInputElement = getRecordInputElement(childInputElement); | |
450 | if (recordInputElement != null) { | |
451 | return recordInputElement; | |
452 | } | |
453 | } | |
454 | } | |
455 | return null; | |
456 | } | |
457 | ||
a0a88f65 AM |
458 | /** |
459 | * Extract a trace event from an XML element. | |
460 | * | |
461 | * @param element | |
462 | * The element | |
463 | * @param inputElement | |
464 | * The input element | |
465 | * @return The extracted event | |
466 | */ | |
6151d86c | 467 | public CustomXmlEvent extractEvent(final Element element, final InputElement inputElement) { |
eb8ea213 | 468 | final CustomXmlEvent event = new CustomXmlEvent(fDefinition, this, TmfTimestamp.ZERO, "", fEventType, ""); //$NON-NLS-1$ //$NON-NLS-2$ |
6151d86c PT |
469 | event.setContent(new CustomEventContent(event, new StringBuffer())); |
470 | parseElement(element, event, inputElement); | |
471 | return event; | |
472 | } | |
473 | ||
474 | private void parseElement(final Element element, final CustomXmlEvent event, final InputElement inputElement) { | |
475 | if (inputElement.inputName != null && !inputElement.inputName.equals(CustomXmlTraceDefinition.TAG_IGNORE)) { | |
476 | event.parseInput(parseElement(element, new StringBuffer()).toString(), inputElement.inputName, inputElement.inputAction, inputElement.inputFormat); | |
477 | } | |
478 | if (inputElement.attributes != null) { | |
479 | for (final InputAttribute attribute : inputElement.attributes) { | |
480 | event.parseInput(element.getAttribute(attribute.attributeName), attribute.inputName, attribute.inputAction, attribute.inputFormat); | |
481 | } | |
482 | } | |
483 | final NodeList childNodes = element.getChildNodes(); | |
484 | if (inputElement.childElements != null) { | |
485 | for (int i = 0; i < childNodes.getLength(); i++) { | |
486 | final Node node = childNodes.item(i); | |
487 | if (node instanceof Element) { | |
488 | for (final InputElement child : inputElement.childElements) { | |
489 | if (node.getNodeName().equals(child.elementName)) { | |
490 | parseElement((Element) node, event, child); | |
491 | break; | |
492 | } | |
493 | } | |
494 | } | |
495 | } | |
496 | } | |
497 | return; | |
498 | } | |
499 | ||
a0a88f65 AM |
500 | /** |
501 | * Retrieve the trace definition. | |
502 | * | |
503 | * @return The trace definition | |
504 | */ | |
6151d86c PT |
505 | public CustomTraceDefinition getDefinition() { |
506 | return fDefinition; | |
507 | } | |
508 | ||
cd43d683 PT |
509 | /** |
510 | * {@inheritDoc} | |
511 | * <p> | |
512 | * The default implementation sets the confidence to 100 if any of the first | |
513 | * 100 lines of the file contains a valid record input element, and 0 | |
514 | * otherwise. | |
515 | */ | |
6151d86c | 516 | @Override |
a94410d9 | 517 | public IStatus validate(IProject project, String path) { |
cd43d683 PT |
518 | File file = new File(path); |
519 | if (!file.exists() || !file.isFile() || !file.canRead()) { | |
520 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CustomTrace_FileNotFound + ": " + path); //$NON-NLS-1$ | |
521 | } | |
522 | try (BufferedRandomAccessFile rafile = new BufferedRandomAccessFile(path, "r")) { //$NON-NLS-1$ | |
523 | int lineCount = 0; | |
524 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ | |
525 | long rawPos = 0; | |
526 | String line = rafile.getNextLine(); | |
527 | while ((line != null) && (lineCount++ < MAX_LINES)) { | |
528 | final int idx = line.indexOf(recordElementStart); | |
529 | if (idx != -1) { | |
530 | rafile.seek(rawPos + idx + 1); // +1 is for the < | |
531 | final StringBuffer elementBuffer = new StringBuffer("<"); //$NON-NLS-1$ | |
532 | readElement(elementBuffer, rafile); | |
533 | final Element element = parseElementBuffer(elementBuffer); | |
534 | if (element != null) { | |
535 | rafile.close(); | |
536 | return new TraceValidationStatus(CONFIDENCE, Activator.PLUGIN_ID); | |
eb8ea213 | 537 | } |
cd43d683 PT |
538 | } |
539 | rawPos = rafile.getFilePointer(); | |
540 | line = rafile.getNextLine(); | |
eb8ea213 | 541 | } |
cd43d683 PT |
542 | } catch (IOException e) { |
543 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "IOException validating file: " + path, e); //$NON-NLS-1$ | |
a94410d9 | 544 | } |
cd43d683 | 545 | return new TraceValidationStatus(0, Activator.PLUGIN_ID); |
6151d86c | 546 | } |
032ecd45 MAL |
547 | |
548 | private static int fCheckpointSize = -1; | |
549 | ||
550 | @Override | |
551 | public synchronized int getCheckpointSize() { | |
552 | if (fCheckpointSize == -1) { | |
553 | TmfCheckpoint c = new TmfCheckpoint(TmfTimestamp.ZERO, new TmfLongLocation(0L), 0); | |
554 | ByteBuffer b = ByteBuffer.allocate(ITmfCheckpoint.MAX_SERIALIZE_SIZE); | |
555 | b.clear(); | |
556 | c.serialize(b); | |
557 | fCheckpointSize = b.position(); | |
558 | } | |
559 | ||
560 | return fCheckpointSize; | |
561 | } | |
562 | ||
563 | @Override | |
564 | public ITmfLocation restoreLocation(ByteBuffer bufferIn) { | |
565 | return new TmfLongLocation(bufferIn); | |
566 | } | |
567 | ||
568 | @Override | |
569 | protected ITmfTraceIndexer createIndexer(int interval) { | |
570 | return new TmfBTreeTraceIndexer(this, interval); | |
571 | } | |
6151d86c | 572 | } |