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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 | ||
13 | package org.eclipse.linuxtools.internal.tmf.ui.parsers.custom; | |
14 | ||
15 | import java.io.ByteArrayInputStream; | |
eb8ea213 MK |
16 | import java.io.File; |
17 | import java.io.FileInputStream; | |
18 | import java.io.FileNotFoundException; | |
6151d86c PT |
19 | import java.io.IOException; |
20 | import java.io.RandomAccessFile; | |
032ecd45 | 21 | import java.nio.ByteBuffer; |
6151d86c PT |
22 | |
23 | import javax.xml.parsers.DocumentBuilder; | |
24 | import javax.xml.parsers.DocumentBuilderFactory; | |
25 | import javax.xml.parsers.ParserConfigurationException; | |
eb8ea213 | 26 | |
6151d86c PT |
27 | import org.eclipse.core.resources.IProject; |
28 | import org.eclipse.core.resources.IResource; | |
a3db8436 AM |
29 | import org.eclipse.core.runtime.IStatus; |
30 | import org.eclipse.core.runtime.Status; | |
6151d86c PT |
31 | import org.eclipse.linuxtools.internal.tmf.ui.Activator; |
32 | import org.eclipse.linuxtools.internal.tmf.ui.parsers.custom.CustomXmlTraceDefinition.InputAttribute; | |
33 | import org.eclipse.linuxtools.internal.tmf.ui.parsers.custom.CustomXmlTraceDefinition.InputElement; | |
34 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; | |
6151d86c PT |
35 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
36 | import org.eclipse.linuxtools.tmf.core.io.BufferedRandomAccessFile; | |
3bd46eef | 37 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; |
6151d86c PT |
38 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
39 | import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser; | |
6151d86c | 40 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
6151d86c | 41 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; |
032ecd45 | 42 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfPersistentlyIndexable; |
a3db8436 | 43 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfTraceIndexer; |
032ecd45 MAL |
44 | import org.eclipse.linuxtools.tmf.core.trace.indexer.TmfBTreeTraceIndexer; |
45 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.ITmfCheckpoint; | |
46 | import org.eclipse.linuxtools.tmf.core.trace.indexer.checkpoint.TmfCheckpoint; | |
a3db8436 AM |
47 | import org.eclipse.linuxtools.tmf.core.trace.location.ITmfLocation; |
48 | import org.eclipse.linuxtools.tmf.core.trace.location.TmfLongLocation; | |
6151d86c PT |
49 | import org.w3c.dom.Document; |
50 | import org.w3c.dom.Element; | |
51 | import org.w3c.dom.Node; | |
52 | import org.w3c.dom.NodeList; | |
53 | import org.xml.sax.EntityResolver; | |
54 | import org.xml.sax.ErrorHandler; | |
55 | import org.xml.sax.InputSource; | |
56 | import org.xml.sax.SAXException; | |
57 | import org.xml.sax.SAXParseException; | |
58 | ||
a0a88f65 AM |
59 | /** |
60 | * Trace object for custom XML trace parsers. | |
61 | * | |
62 | * @author Patrick Tassé | |
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; | |
68 | ||
69 | private final CustomXmlTraceDefinition fDefinition; | |
70 | private final CustomXmlEventType fEventType; | |
71 | private final InputElement fRecordInputElement; | |
72 | private BufferedRandomAccessFile fFile; | |
73 | ||
a0a88f65 AM |
74 | /** |
75 | * Basic constructor | |
76 | * | |
eb8ea213 MK |
77 | * @param definition |
78 | * Trace definition | |
a0a88f65 | 79 | */ |
6151d86c PT |
80 | public CustomXmlTrace(final CustomXmlTraceDefinition definition) { |
81 | fDefinition = definition; | |
82 | fEventType = new CustomXmlEventType(fDefinition); | |
83 | fRecordInputElement = getRecordInputElement(fDefinition.rootInputElement); | |
84 | setCacheSize(DEFAULT_CACHE_SIZE); | |
85 | } | |
86 | ||
a0a88f65 AM |
87 | /** |
88 | * Full constructor | |
89 | * | |
90 | * @param resource | |
91 | * Trace resource | |
92 | * @param definition | |
93 | * Trace definition | |
94 | * @param path | |
95 | * Path to the trace/log file | |
96 | * @param pageSize | |
97 | * Page size to use | |
98 | * @throws TmfTraceException | |
99 | * If the trace/log couldn't be opened | |
100 | */ | |
101 | public CustomXmlTrace(final IResource resource, | |
102 | final CustomXmlTraceDefinition definition, final String path, | |
103 | final int pageSize) throws TmfTraceException { | |
6151d86c PT |
104 | this(definition); |
105 | setCacheSize((pageSize > 0) ? pageSize : DEFAULT_CACHE_SIZE); | |
106 | initTrace(resource, path, CustomXmlEvent.class); | |
107 | } | |
108 | ||
109 | @Override | |
110 | public void initTrace(final IResource resource, final String path, final Class<? extends ITmfEvent> eventType) throws TmfTraceException { | |
111 | super.initTrace(resource, path, eventType); | |
112 | try { | |
113 | fFile = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$ | |
114 | } catch (IOException e) { | |
115 | throw new TmfTraceException(e.getMessage(), e); | |
116 | } | |
6151d86c PT |
117 | } |
118 | ||
119 | @Override | |
120 | public synchronized void dispose() { | |
121 | super.dispose(); | |
122 | if (fFile != null) { | |
123 | try { | |
124 | fFile.close(); | |
125 | } catch (IOException e) { | |
126 | } finally { | |
127 | fFile = null; | |
128 | } | |
129 | } | |
130 | } | |
131 | ||
b0422293 PT |
132 | @Override |
133 | public ITmfTraceIndexer getIndexer() { | |
134 | return super.getIndexer(); | |
135 | } | |
136 | ||
6151d86c PT |
137 | @Override |
138 | public synchronized TmfContext seekEvent(final ITmfLocation location) { | |
139 | final CustomXmlTraceContext context = new CustomXmlTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
140 | if (NULL_LOCATION.equals(location) || fFile == null) { | |
141 | return context; | |
142 | } | |
143 | try { | |
144 | if (location == null) { | |
145 | fFile.seek(0); | |
146 | } else if (location.getLocationInfo() instanceof Long) { | |
147 | fFile.seek((Long) location.getLocationInfo()); | |
148 | } | |
149 | String line; | |
150 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ | |
151 | long rawPos = fFile.getFilePointer(); | |
152 | ||
153 | while ((line = fFile.getNextLine()) != null) { | |
154 | final int idx = line.indexOf(recordElementStart); | |
155 | if (idx != -1) { | |
156 | context.setLocation(new TmfLongLocation(rawPos + idx)); | |
157 | return context; | |
158 | } | |
159 | rawPos = fFile.getFilePointer(); | |
160 | } | |
161 | return context; | |
162 | } catch (final IOException e) { | |
163 | Activator.getDefault().logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ | |
164 | return context; | |
165 | } | |
166 | ||
167 | } | |
168 | ||
169 | @Override | |
170 | public synchronized TmfContext seekEvent(final double ratio) { | |
171 | if (fFile == null) { | |
172 | return new CustomTxtTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
173 | } | |
174 | try { | |
91f6e587 | 175 | long pos = Math.round(ratio * fFile.length()); |
6151d86c PT |
176 | while (pos > 0) { |
177 | fFile.seek(pos - 1); | |
178 | if (fFile.read() == '\n') { | |
179 | break; | |
180 | } | |
181 | pos--; | |
182 | } | |
183 | final ITmfLocation location = new TmfLongLocation(pos); | |
184 | final TmfContext context = seekEvent(location); | |
185 | context.setRank(ITmfContext.UNKNOWN_RANK); | |
186 | return context; | |
187 | } catch (final IOException e) { | |
188 | Activator.getDefault().logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ | |
189 | return new CustomXmlTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK); | |
190 | } | |
191 | } | |
192 | ||
193 | @Override | |
194 | public synchronized double getLocationRatio(final ITmfLocation location) { | |
195 | if (fFile == null) { | |
196 | return 0; | |
197 | } | |
198 | try { | |
199 | if (location.getLocationInfo() instanceof Long) { | |
200 | return (double) ((Long) location.getLocationInfo()) / fFile.length(); | |
201 | } | |
202 | } catch (final IOException e) { | |
203 | Activator.getDefault().logError("Error getting location ration. File: " + getPath(), e); //$NON-NLS-1$ | |
204 | } | |
205 | return 0; | |
206 | } | |
207 | ||
208 | @Override | |
209 | public ITmfLocation getCurrentLocation() { | |
210 | // TODO Auto-generated method stub | |
211 | return null; | |
212 | } | |
213 | ||
214 | @Override | |
215 | public synchronized CustomXmlEvent parseEvent(final ITmfContext tmfContext) { | |
216 | ITmfContext context = seekEvent(tmfContext.getLocation()); | |
217 | return parse(context); | |
218 | } | |
219 | ||
220 | @Override | |
221 | public synchronized CustomXmlEvent getNext(final ITmfContext context) { | |
4c9f2944 | 222 | final ITmfContext savedContext = new TmfContext(context.getLocation(), context.getRank()); |
6151d86c PT |
223 | final CustomXmlEvent event = parse(context); |
224 | if (event != null) { | |
225 | updateAttributes(savedContext, event.getTimestamp()); | |
226 | context.increaseRank(); | |
227 | } | |
228 | return event; | |
229 | } | |
230 | ||
231 | private synchronized CustomXmlEvent parse(final ITmfContext tmfContext) { | |
232 | if (fFile == null) { | |
233 | return null; | |
234 | } | |
235 | if (!(tmfContext instanceof CustomXmlTraceContext)) { | |
236 | return null; | |
237 | } | |
238 | ||
239 | final CustomXmlTraceContext context = (CustomXmlTraceContext) tmfContext; | |
9cbe7899 | 240 | if (context.getLocation() == null || !(context.getLocation().getLocationInfo() instanceof Long) || NULL_LOCATION.equals(context.getLocation())) { |
6151d86c PT |
241 | return null; |
242 | } | |
243 | ||
244 | CustomXmlEvent event = null; | |
245 | try { | |
eb8ea213 | 246 | if (fFile.getFilePointer() != (Long) context.getLocation().getLocationInfo() + 1) |
6151d86c | 247 | { |
eb8ea213 | 248 | fFile.seek((Long) context.getLocation().getLocationInfo() + 1); // +1 is for the < |
6151d86c PT |
249 | } |
250 | final StringBuffer elementBuffer = new StringBuffer("<"); //$NON-NLS-1$ | |
251 | readElement(elementBuffer, fFile); | |
252 | final Element element = parseElementBuffer(elementBuffer); | |
253 | ||
254 | event = extractEvent(element, fRecordInputElement); | |
255 | ((StringBuffer) event.getContent().getValue()).append(elementBuffer); | |
256 | ||
257 | String line; | |
258 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ | |
259 | long rawPos = fFile.getFilePointer(); | |
260 | ||
261 | while ((line = fFile.getNextLine()) != null) { | |
262 | final int idx = line.indexOf(recordElementStart); | |
263 | if (idx != -1) { | |
264 | context.setLocation(new TmfLongLocation(rawPos + idx)); | |
265 | return event; | |
266 | } | |
267 | rawPos = fFile.getFilePointer(); | |
268 | } | |
269 | } catch (final IOException e) { | |
270 | Activator.getDefault().logError("Error parsing event. File: " + getPath(), e); //$NON-NLS-1$ | |
271 | ||
272 | } | |
273 | context.setLocation(NULL_LOCATION); | |
274 | return event; | |
275 | } | |
276 | ||
277 | private Element parseElementBuffer(final StringBuffer elementBuffer) { | |
278 | try { | |
279 | final DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); | |
280 | final DocumentBuilder db = dbf.newDocumentBuilder(); | |
281 | ||
282 | // The following allows xml parsing without access to the dtd | |
eb8ea213 | 283 | final EntityResolver resolver = new EntityResolver() { |
6151d86c | 284 | @Override |
eb8ea213 | 285 | public InputSource resolveEntity(final String publicId, final String systemId) { |
6151d86c PT |
286 | final String empty = ""; //$NON-NLS-1$ |
287 | final ByteArrayInputStream bais = new ByteArrayInputStream(empty.getBytes()); | |
288 | return new InputSource(bais); | |
289 | } | |
290 | }; | |
291 | db.setEntityResolver(resolver); | |
292 | ||
293 | // The following catches xml parsing exceptions | |
eb8ea213 | 294 | db.setErrorHandler(new ErrorHandler() { |
6151d86c PT |
295 | @Override |
296 | public void error(final SAXParseException saxparseexception) throws SAXException {} | |
eb8ea213 | 297 | |
6151d86c PT |
298 | @Override |
299 | public void warning(final SAXParseException saxparseexception) throws SAXException {} | |
eb8ea213 | 300 | |
6151d86c PT |
301 | @Override |
302 | public void fatalError(final SAXParseException saxparseexception) throws SAXException { | |
303 | throw saxparseexception; | |
eb8ea213 MK |
304 | } |
305 | }); | |
6151d86c PT |
306 | |
307 | final Document doc = db.parse(new ByteArrayInputStream(elementBuffer.toString().getBytes())); | |
308 | return doc.getDocumentElement(); | |
309 | } catch (final ParserConfigurationException e) { | |
310 | Activator.getDefault().logError("Error parsing element buffer. File:" + getPath(), e); //$NON-NLS-1$ | |
311 | } catch (final SAXException e) { | |
312 | Activator.getDefault().logError("Error parsing element buffer. File:" + getPath(), e); //$NON-NLS-1$ | |
313 | } catch (final IOException e) { | |
314 | Activator.getDefault().logError("Error parsing element buffer. File: " + getPath(), e); //$NON-NLS-1$ | |
315 | } | |
316 | return null; | |
317 | } | |
318 | ||
319 | private void readElement(final StringBuffer buffer, final RandomAccessFile raFile) { | |
320 | try { | |
321 | int numRead = 0; | |
322 | boolean startTagClosed = false; | |
323 | int i; | |
324 | while ((i = raFile.read()) != -1) { | |
325 | numRead++; | |
eb8ea213 | 326 | final char c = (char) i; |
6151d86c PT |
327 | buffer.append(c); |
328 | if (c == '"') { | |
329 | readQuote(buffer, raFile, '"'); | |
330 | } else if (c == '\'') { | |
331 | readQuote(buffer, raFile, '\''); | |
332 | } else if (c == '<') { | |
333 | readElement(buffer, raFile); | |
334 | } else if (c == '/' && numRead == 1) { | |
335 | break; // found "</" | |
336 | } else if (c == '-' && numRead == 3 && buffer.substring(buffer.length() - 3, buffer.length() - 1).equals("!-")) { //$NON-NLS-1$ | |
337 | readComment(buffer, raFile); // found "<!--" | |
338 | } else if (i == '>') { | |
339 | if (buffer.charAt(buffer.length() - 2) == '/') { | |
340 | break; // found "/>" | |
341 | } else if (startTagClosed) { | |
342 | break; // found "<...>...</...>" | |
343 | } | |
344 | else { | |
345 | startTagClosed = true; // found "<...>" | |
346 | } | |
347 | } | |
348 | } | |
349 | return; | |
350 | } catch (final IOException e) { | |
351 | return; | |
352 | } | |
353 | } | |
354 | ||
355 | private static void readQuote(final StringBuffer buffer, | |
356 | final RandomAccessFile raFile, final char eq) { | |
357 | try { | |
358 | int i; | |
359 | while ((i = raFile.read()) != -1) { | |
eb8ea213 | 360 | final char c = (char) i; |
6151d86c PT |
361 | buffer.append(c); |
362 | if (c == eq) | |
363 | { | |
364 | break; // found matching end-quote | |
365 | } | |
366 | } | |
367 | return; | |
368 | } catch (final IOException e) { | |
369 | return; | |
370 | } | |
371 | } | |
372 | ||
373 | private static void readComment(final StringBuffer buffer, | |
374 | final RandomAccessFile raFile) { | |
375 | try { | |
376 | int numRead = 0; | |
377 | int i; | |
378 | while ((i = raFile.read()) != -1) { | |
379 | numRead++; | |
eb8ea213 | 380 | final char c = (char) i; |
6151d86c PT |
381 | buffer.append(c); |
382 | if (c == '>' && numRead >= 2 && buffer.substring(buffer.length() - 3, buffer.length() - 1).equals("--")) //$NON-NLS-1$ | |
383 | { | |
384 | break; // found "-->" | |
385 | } | |
386 | } | |
387 | return; | |
388 | } catch (final IOException e) { | |
389 | return; | |
390 | } | |
391 | } | |
392 | ||
a0a88f65 AM |
393 | /** |
394 | * Parse an XML element. | |
395 | * | |
396 | * @param parentElement | |
397 | * The parent element | |
398 | * @param buffer | |
399 | * The contents to parse | |
400 | * @return The parsed content | |
401 | */ | |
6151d86c PT |
402 | public static StringBuffer parseElement(final Element parentElement, final StringBuffer buffer) { |
403 | final NodeList nodeList = parentElement.getChildNodes(); | |
404 | String separator = null; | |
405 | for (int i = 0; i < nodeList.getLength(); i++) { | |
406 | final Node node = nodeList.item(i); | |
407 | if (node.getNodeType() == Node.ELEMENT_NODE) { | |
408 | if (separator == null) { | |
409 | separator = " | "; //$NON-NLS-1$ | |
410 | } else { | |
411 | buffer.append(separator); | |
412 | } | |
413 | final Element element = (Element) node; | |
414 | if (!element.hasChildNodes()) { | |
415 | buffer.append(element.getNodeName()); | |
416 | } else if (element.getChildNodes().getLength() == 1 && element.getFirstChild().getNodeType() == Node.TEXT_NODE) { | |
417 | buffer.append(element.getNodeName() + ":" + element.getFirstChild().getNodeValue().trim()); //$NON-NLS-1$ | |
418 | } else { | |
419 | buffer.append(element.getNodeName()); | |
420 | buffer.append(" [ "); //$NON-NLS-1$ | |
421 | parseElement(element, buffer); | |
422 | buffer.append(" ]"); //$NON-NLS-1$ | |
423 | } | |
424 | } else if (node.getNodeType() == Node.TEXT_NODE) { | |
425 | if (node.getNodeValue().trim().length() != 0) { | |
426 | buffer.append(node.getNodeValue().trim()); | |
427 | } | |
428 | } | |
429 | } | |
430 | return buffer; | |
431 | } | |
432 | ||
a0a88f65 AM |
433 | /** |
434 | * Get an input element if it is a valid record input. If not, we will look | |
435 | * into its children for valid inputs. | |
436 | * | |
437 | * @param inputElement | |
438 | * The main element to check for. | |
439 | * @return The record element | |
440 | */ | |
6151d86c PT |
441 | public InputElement getRecordInputElement(final InputElement inputElement) { |
442 | if (inputElement.logEntry) { | |
443 | return inputElement; | |
444 | } else if (inputElement.childElements != null) { | |
445 | for (final InputElement childInputElement : inputElement.childElements) { | |
446 | final InputElement recordInputElement = getRecordInputElement(childInputElement); | |
447 | if (recordInputElement != null) { | |
448 | return recordInputElement; | |
449 | } | |
450 | } | |
451 | } | |
452 | return null; | |
453 | } | |
454 | ||
a0a88f65 AM |
455 | /** |
456 | * Extract a trace event from an XML element. | |
457 | * | |
458 | * @param element | |
459 | * The element | |
460 | * @param inputElement | |
461 | * The input element | |
462 | * @return The extracted event | |
463 | */ | |
6151d86c | 464 | public CustomXmlEvent extractEvent(final Element element, final InputElement inputElement) { |
eb8ea213 | 465 | final CustomXmlEvent event = new CustomXmlEvent(fDefinition, this, TmfTimestamp.ZERO, "", fEventType, ""); //$NON-NLS-1$ //$NON-NLS-2$ |
6151d86c PT |
466 | event.setContent(new CustomEventContent(event, new StringBuffer())); |
467 | parseElement(element, event, inputElement); | |
468 | return event; | |
469 | } | |
470 | ||
471 | private void parseElement(final Element element, final CustomXmlEvent event, final InputElement inputElement) { | |
472 | if (inputElement.inputName != null && !inputElement.inputName.equals(CustomXmlTraceDefinition.TAG_IGNORE)) { | |
473 | event.parseInput(parseElement(element, new StringBuffer()).toString(), inputElement.inputName, inputElement.inputAction, inputElement.inputFormat); | |
474 | } | |
475 | if (inputElement.attributes != null) { | |
476 | for (final InputAttribute attribute : inputElement.attributes) { | |
477 | event.parseInput(element.getAttribute(attribute.attributeName), attribute.inputName, attribute.inputAction, attribute.inputFormat); | |
478 | } | |
479 | } | |
480 | final NodeList childNodes = element.getChildNodes(); | |
481 | if (inputElement.childElements != null) { | |
482 | for (int i = 0; i < childNodes.getLength(); i++) { | |
483 | final Node node = childNodes.item(i); | |
484 | if (node instanceof Element) { | |
485 | for (final InputElement child : inputElement.childElements) { | |
486 | if (node.getNodeName().equals(child.elementName)) { | |
487 | parseElement((Element) node, event, child); | |
488 | break; | |
489 | } | |
490 | } | |
491 | } | |
492 | } | |
493 | } | |
494 | return; | |
495 | } | |
496 | ||
a0a88f65 AM |
497 | /** |
498 | * Retrieve the trace definition. | |
499 | * | |
500 | * @return The trace definition | |
501 | */ | |
6151d86c PT |
502 | public CustomTraceDefinition getDefinition() { |
503 | return fDefinition; | |
504 | } | |
505 | ||
6151d86c | 506 | @Override |
a94410d9 | 507 | public IStatus validate(IProject project, String path) { |
eb8ea213 MK |
508 | File xmlFile = new File(path); |
509 | if (xmlFile.exists() && xmlFile.isFile() && xmlFile.canRead() && xmlFile.length() > 0) { | |
510 | DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); | |
511 | DocumentBuilder db; | |
512 | try { | |
513 | db = dbf.newDocumentBuilder(); | |
514 | ||
515 | // The following allows xml parsing without access to the dtd | |
516 | EntityResolver resolver = new EntityResolver() { | |
517 | @Override | |
518 | public InputSource resolveEntity(String publicId, String systemId) { | |
519 | return new InputSource(new ByteArrayInputStream(new byte[0])); | |
520 | } | |
521 | }; | |
522 | db.setEntityResolver(resolver); | |
523 | ||
524 | // The following catches xml parsing exceptions | |
525 | db.setErrorHandler(new ErrorHandler() { | |
526 | @Override | |
527 | public void error(SAXParseException saxparseexception) throws SAXException { | |
528 | } | |
529 | ||
530 | @Override | |
531 | public void warning(SAXParseException saxparseexception) throws SAXException { | |
532 | } | |
533 | ||
534 | @Override | |
535 | public void fatalError(SAXParseException saxparseexception) throws SAXException { | |
536 | throw saxparseexception; | |
537 | } | |
538 | }); | |
539 | db.parse(new FileInputStream(xmlFile)); | |
540 | return Status.OK_STATUS; | |
541 | } catch (ParserConfigurationException e) { | |
542 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e); | |
543 | } catch (FileNotFoundException e) { | |
544 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e); | |
545 | } catch (SAXException e) { | |
546 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e); | |
547 | } catch (IOException e) { | |
548 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e); | |
549 | } | |
a94410d9 MK |
550 | } |
551 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.CustomTrace_FileNotFound + ": " + path); //$NON-NLS-1$ | |
6151d86c | 552 | } |
032ecd45 MAL |
553 | |
554 | private static int fCheckpointSize = -1; | |
555 | ||
556 | @Override | |
557 | public synchronized int getCheckpointSize() { | |
558 | if (fCheckpointSize == -1) { | |
559 | TmfCheckpoint c = new TmfCheckpoint(TmfTimestamp.ZERO, new TmfLongLocation(0L), 0); | |
560 | ByteBuffer b = ByteBuffer.allocate(ITmfCheckpoint.MAX_SERIALIZE_SIZE); | |
561 | b.clear(); | |
562 | c.serialize(b); | |
563 | fCheckpointSize = b.position(); | |
564 | } | |
565 | ||
566 | return fCheckpointSize; | |
567 | } | |
568 | ||
569 | @Override | |
570 | public ITmfLocation restoreLocation(ByteBuffer bufferIn) { | |
571 | return new TmfLongLocation(bufferIn); | |
572 | } | |
573 | ||
574 | @Override | |
575 | protected ITmfTraceIndexer createIndexer(int interval) { | |
576 | return new TmfBTreeTraceIndexer(this, interval); | |
577 | } | |
6151d86c | 578 | } |