| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2010, 2013 Ericsson |
| 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.tmf.core.parsers.custom; |
| 14 | |
| 15 | import java.io.ByteArrayInputStream; |
| 16 | import java.io.File; |
| 17 | import java.io.IOException; |
| 18 | import java.io.RandomAccessFile; |
| 19 | import java.nio.ByteBuffer; |
| 20 | |
| 21 | import javax.xml.parsers.DocumentBuilder; |
| 22 | import javax.xml.parsers.DocumentBuilderFactory; |
| 23 | import javax.xml.parsers.ParserConfigurationException; |
| 24 | |
| 25 | import org.eclipse.core.resources.IProject; |
| 26 | import org.eclipse.core.resources.IResource; |
| 27 | import org.eclipse.core.runtime.IStatus; |
| 28 | import org.eclipse.core.runtime.Status; |
| 29 | import org.eclipse.linuxtools.internal.tmf.core.Activator; |
| 30 | import org.eclipse.linuxtools.tmf.core.event.ITmfEvent; |
| 31 | import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException; |
| 32 | import org.eclipse.linuxtools.tmf.core.io.BufferedRandomAccessFile; |
| 33 | import org.eclipse.linuxtools.tmf.core.parsers.custom.CustomXmlTraceDefinition.InputAttribute; |
| 34 | import org.eclipse.linuxtools.tmf.core.parsers.custom.CustomXmlTraceDefinition.InputElement; |
| 35 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; |
| 36 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
| 37 | import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser; |
| 38 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
| 39 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; |
| 40 | import org.eclipse.linuxtools.tmf.core.trace.TraceValidationStatus; |
| 41 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfPersistentlyIndexable; |
| 42 | import org.eclipse.linuxtools.tmf.core.trace.indexer.ITmfTraceIndexer; |
| 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; |
| 46 | import org.eclipse.linuxtools.tmf.core.trace.location.ITmfLocation; |
| 47 | import org.eclipse.linuxtools.tmf.core.trace.location.TmfLongLocation; |
| 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 | |
| 58 | /** |
| 59 | * Trace object for custom XML trace parsers. |
| 60 | * |
| 61 | * @author Patrick Tassé |
| 62 | * @since 3.0 |
| 63 | */ |
| 64 | public class CustomXmlTrace extends TmfTrace implements ITmfEventParser, ITmfPersistentlyIndexable { |
| 65 | |
| 66 | private static final TmfLongLocation NULL_LOCATION = new TmfLongLocation((Long) null); |
| 67 | private static final int DEFAULT_CACHE_SIZE = 100; |
| 68 | private static final int MAX_LINES = 100; |
| 69 | private static final int CONFIDENCE = 100; |
| 70 | |
| 71 | private final CustomXmlTraceDefinition fDefinition; |
| 72 | private final CustomXmlEventType fEventType; |
| 73 | private final InputElement fRecordInputElement; |
| 74 | private BufferedRandomAccessFile fFile; |
| 75 | |
| 76 | /** |
| 77 | * Basic constructor |
| 78 | * |
| 79 | * @param definition |
| 80 | * Trace definition |
| 81 | */ |
| 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 | |
| 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 { |
| 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 | } |
| 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 | |
| 134 | @Override |
| 135 | public ITmfTraceIndexer getIndexer() { |
| 136 | return super.getIndexer(); |
| 137 | } |
| 138 | |
| 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 | } |
| 151 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ |
| 152 | long rawPos = fFile.getFilePointer(); |
| 153 | String line = fFile.getNextLine(); |
| 154 | while (line != null) { |
| 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(); |
| 161 | line = fFile.getNextLine(); |
| 162 | } |
| 163 | return context; |
| 164 | } catch (final IOException e) { |
| 165 | Activator.logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ |
| 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 { |
| 177 | long pos = Math.round(ratio * fFile.length()); |
| 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) { |
| 190 | Activator.logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$ |
| 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 ((Long) location.getLocationInfo()).doubleValue() / fFile.length(); |
| 203 | } |
| 204 | } catch (final IOException e) { |
| 205 | Activator.logError("Error getting location ration. File: " + getPath(), e); //$NON-NLS-1$ |
| 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) { |
| 224 | final ITmfContext savedContext = new TmfContext(context.getLocation(), context.getRank()); |
| 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; |
| 242 | if (context.getLocation() == null || !(context.getLocation().getLocationInfo() instanceof Long) || NULL_LOCATION.equals(context.getLocation())) { |
| 243 | return null; |
| 244 | } |
| 245 | |
| 246 | CustomXmlEvent event = null; |
| 247 | try { |
| 248 | if (fFile.getFilePointer() != (Long) context.getLocation().getLocationInfo() + 1) |
| 249 | { |
| 250 | fFile.seek((Long) context.getLocation().getLocationInfo() + 1); // +1 is for the < |
| 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 | |
| 259 | |
| 260 | final String recordElementStart = "<" + fRecordInputElement.elementName; //$NON-NLS-1$ |
| 261 | long rawPos = fFile.getFilePointer(); |
| 262 | String line = fFile.getNextLine(); |
| 263 | while (line != null) { |
| 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(); |
| 270 | line = fFile.getNextLine(); |
| 271 | } |
| 272 | } catch (final IOException e) { |
| 273 | Activator.logError("Error parsing event. File: " + getPath(), e); //$NON-NLS-1$ |
| 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 |
| 286 | final EntityResolver resolver = new EntityResolver() { |
| 287 | @Override |
| 288 | public InputSource resolveEntity(final String publicId, final String systemId) { |
| 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 |
| 297 | db.setErrorHandler(new ErrorHandler() { |
| 298 | @Override |
| 299 | public void error(final SAXParseException saxparseexception) throws SAXException {} |
| 300 | |
| 301 | @Override |
| 302 | public void warning(final SAXParseException saxparseexception) throws SAXException {} |
| 303 | |
| 304 | @Override |
| 305 | public void fatalError(final SAXParseException saxparseexception) throws SAXException { |
| 306 | throw saxparseexception; |
| 307 | } |
| 308 | }); |
| 309 | |
| 310 | final Document doc = db.parse(new ByteArrayInputStream(elementBuffer.toString().getBytes())); |
| 311 | return doc.getDocumentElement(); |
| 312 | } catch (final ParserConfigurationException e) { |
| 313 | Activator.logError("Error parsing element buffer. File:" + getPath(), e); //$NON-NLS-1$ |
| 314 | } catch (final SAXException e) { |
| 315 | Activator.logError("Error parsing element buffer. File:" + getPath(), e); //$NON-NLS-1$ |
| 316 | } catch (final IOException e) { |
| 317 | Activator.logError("Error parsing element buffer. File: " + getPath(), e); //$NON-NLS-1$ |
| 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++; |
| 329 | final char c = (char) i; |
| 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) { |
| 363 | final char c = (char) i; |
| 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++; |
| 383 | final char c = (char) i; |
| 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 | |
| 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 | */ |
| 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 | |
| 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 | */ |
| 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 | |
| 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 | */ |
| 467 | public CustomXmlEvent extractEvent(final Element element, final InputElement inputElement) { |
| 468 | final CustomXmlEvent event = new CustomXmlEvent(fDefinition, this, TmfTimestamp.ZERO, "", fEventType, ""); //$NON-NLS-1$ //$NON-NLS-2$ |
| 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 | |
| 500 | /** |
| 501 | * Retrieve the trace definition. |
| 502 | * |
| 503 | * @return The trace definition |
| 504 | */ |
| 505 | public CustomTraceDefinition getDefinition() { |
| 506 | return fDefinition; |
| 507 | } |
| 508 | |
| 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 | */ |
| 516 | @Override |
| 517 | public IStatus validate(IProject project, String path) { |
| 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); |
| 537 | } |
| 538 | } |
| 539 | rawPos = rafile.getFilePointer(); |
| 540 | line = rafile.getNextLine(); |
| 541 | } |
| 542 | } catch (IOException e) { |
| 543 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "IOException validating file: " + path, e); //$NON-NLS-1$ |
| 544 | } |
| 545 | return new TraceValidationStatus(0, Activator.PLUGIN_ID); |
| 546 | } |
| 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 | } |
| 572 | } |