org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/internal/tmf/ui/parsers/custom/CustomTxtTrace.java

   1 /*******************************************************************************
   2  * Copyright (c) 2010 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.internal.tmf.ui.parsers.custom;
  14
  15 import java.io.File;
  16 import java.io.FileNotFoundException;
  17 import java.io.IOException;
  18 import java.util.HashMap;
  19 import java.util.Iterator;
  20 import java.util.List;
  21 import java.util.Map.Entry;
  22 import java.util.regex.Matcher;
  23
  24 import org.eclipse.core.resources.IProject;
  25 import org.eclipse.core.resources.IResource;
  26 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  27 import org.eclipse.linuxtools.internal.tmf.ui.parsers.custom.CustomTxtTraceDefinition.InputLine;
  28 import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
  29 import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
  30 import org.eclipse.linuxtools.tmf.core.io.BufferedRandomAccessFile;
  31 import org.eclipse.linuxtools.tmf.core.trace.ITmfContext;
  32 import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser;
  33 import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation;
  34 import org.eclipse.linuxtools.tmf.core.trace.TmfContext;
  35 import org.eclipse.linuxtools.tmf.core.trace.TmfLocation;
  36 import org.eclipse.linuxtools.tmf.core.trace.TmfTrace;
  37
  38 public class CustomTxtTrace extends TmfTrace<CustomTxtEvent> implements ITmfEventParser<CustomTxtEvent> {
  39
  40     private static final TmfLocation<Long> NULL_LOCATION = new TmfLocation<Long>((Long) null);
  41     private static final int DEFAULT_CACHE_SIZE = 100;
  42
  43     private final CustomTxtTraceDefinition fDefinition;
  44     private final CustomTxtEventType fEventType;
  45
  46     public CustomTxtTrace(final CustomTxtTraceDefinition definition) {
  47         fDefinition = definition;
  48         fEventType = new CustomTxtEventType(fDefinition);
  49     }
  50
  51     public CustomTxtTrace(final IResource resource, final CustomTxtTraceDefinition definition, final String path, final int pageSize) throws TmfTraceException {
  52         super(resource, CustomTxtEvent.class, path, (pageSize > 0) ? pageSize : DEFAULT_CACHE_SIZE);
  53         fDefinition = definition;
  54         fEventType = new CustomTxtEventType(fDefinition);
  55     }
  56
  57     @Override
  58     public void initTrace(final IResource resource, final String path, final Class<CustomTxtEvent> eventType) throws TmfTraceException {
  59         super.initTrace(resource, path, eventType);
  60     }
  61
  62     @Override
  63     public TmfContext seekEvent(final ITmfLocation<?> location) {
  64         final CustomTxtTraceContext context = new CustomTxtTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK);
  65         if (NULL_LOCATION.equals(location) || !new File(getPath()).isFile())
  66             return context;
  67         try {
  68             BufferedRandomAccessFile raFile = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$
  69             if (location != null && location.getLocation() instanceof Long) {
  70                 raFile.seek((Long)location.getLocation());
  71             }
  72             String line;
  73             long rawPos = raFile.getFilePointer();
  74             while ((line = raFile.getNextLine()) != null) {
  75                 for (final InputLine input : getFirstLines()) {
  76                     final Matcher matcher = input.getPattern().matcher(line);
  77                     if (matcher.find()) {
  78                         context.setLocation(new TmfLocation<Long>(rawPos));
  79                         context.raFile = raFile;
  80                         context.firstLineMatcher = matcher;
  81                         context.firstLine = line;
  82                         context.nextLineLocation = raFile.getFilePointer();
  83                         context.inputLine = input;
  84                         return context;
  85                     }
  86                 }
  87                 rawPos = raFile.getFilePointer();
  88             }
  89             return context;
  90         } catch (final FileNotFoundException e) {
  91             Activator.getDefault().logError("Error seeking event. File not found: " + getPath(), e); //$NON-NLS-1$
  92             return context;
  93         } catch (final IOException e) {
  94             Activator.getDefault().logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$
  95             return context;
  96         }
  97
  98     }
  99
 100     @Override
 101     public TmfContext seekEvent(final double ratio) {
 102         BufferedRandomAccessFile raFile = null;
 103         try {
 104             raFile = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$
 105             long pos = (long) (ratio * raFile.length());
 106             while (pos > 0) {
 107                 raFile.seek(pos - 1);
 108                 if (raFile.read() == '\n') {
 109                     break;
 110                 }
 111                 pos--;
 112             }
 113             final ITmfLocation<?> location = new TmfLocation<Long>(pos);
 114             final TmfContext context = seekEvent(location);
 115             context.setRank(ITmfContext.UNKNOWN_RANK);
 116             return context;
 117         } catch (final FileNotFoundException e) {
 118             Activator.getDefault().logError("Error seeking event. File not found: " + getPath(), e); //$NON-NLS-1$
 119             return new CustomTxtTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK);
 120         } catch (final IOException e) {
 121             Activator.getDefault().logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$
 122             return new CustomTxtTraceContext(NULL_LOCATION, ITmfContext.UNKNOWN_RANK);
 123         } finally {
 124             if (raFile != null) {
 125                 try {
 126                     raFile.close();
 127                 } catch (final IOException e) {
 128                 }
 129             }
 130         }
 131     }
 132
 133     @Override
 134     public double getLocationRatio(final ITmfLocation<?> location) {
 135         BufferedRandomAccessFile raFile = null;
 136         try {
 137             if (location.getLocation() instanceof Long) {
 138                 raFile = new BufferedRandomAccessFile(getPath(), "r"); //$NON-NLS-1$
 139                 return (double) ((Long) location.getLocation()) / raFile.length();
 140             }
 141         } catch (final FileNotFoundException e) {
 142             Activator.getDefault().logError("Error seeking event. File not found: " + getPath(), e); //$NON-NLS-1$
 143         } catch (final IOException e) {
 144             Activator.getDefault().logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$
 145         } finally {
 146             if (raFile != null) {
 147                 try {
 148                     raFile.close();
 149                 } catch (final IOException e) {
 150                 }
 151             }
 152         }
 153         return 0;
 154     }
 155
 156     @Override
 157     public ITmfLocation<?> getCurrentLocation() {
 158         // TODO Auto-generated method stub
 159         return null;
 160     }
 161
 162     @Override
 163     public synchronized CustomTxtEvent getNext(final ITmfContext context) {
 164         final ITmfContext savedContext = context.clone();
 165         final CustomTxtEvent event = parseEvent(context);
 166         if (event != null) {
 167             updateAttributes(savedContext, event.getTimestamp());
 168             context.increaseRank();
 169         }
 170         return event;
 171     }
 172
 173     @Override
 174     public CustomTxtEvent parseEvent(final ITmfContext tmfContext) {
 175         if (!(tmfContext instanceof CustomTxtTraceContext))
 176             return null;
 177
 178         final CustomTxtTraceContext context = (CustomTxtTraceContext) tmfContext;
 179         if (!(context.getLocation().getLocation() instanceof Long) || NULL_LOCATION.equals(context.getLocation()))
 180             return null;
 181
 182         CustomTxtEvent event = parseFirstLine(context);
 183
 184         final HashMap<InputLine, Integer> countMap = new HashMap<InputLine, Integer>();
 185         InputLine currentInput = null;
 186         if (context.inputLine.childrenInputs != null && context.inputLine.childrenInputs.size() > 0) {
 187             currentInput = context.inputLine.childrenInputs.get(0);
 188             countMap.put(currentInput, 0);
 189         }
 190
 191         synchronized (context.raFile) {
 192             try {
 193                 if (context.raFile.getFilePointer() != context.nextLineLocation) {
 194                     context.raFile.seek(context.nextLineLocation);
 195                 }
 196                 String line;
 197                 long rawPos = context.raFile.getFilePointer();
 198                 while ((line = context.raFile.getNextLine()) != null) {
 199                     boolean processed = false;
 200                     if (currentInput == null) {
 201                         for (final InputLine input : getFirstLines()) {
 202                             final Matcher matcher = input.getPattern().matcher(line);
 203                             if (matcher.find()) {
 204                                 context.setLocation(new TmfLocation<Long>(rawPos));
 205                                 context.firstLineMatcher = matcher;
 206                                 context.firstLine = line;
 207                                 context.nextLineLocation = context.raFile.getFilePointer();
 208                                 context.inputLine = input;
 209                                 return event;
 210                             }
 211                         }
 212                     } else {
 213                         if (countMap.get(currentInput) >= currentInput.getMinCount()) {
 214                             final List<InputLine> nextInputs = currentInput.getNextInputs(countMap);
 215                             if (nextInputs.size() == 0 || nextInputs.get(nextInputs.size() - 1).getMinCount() == 0) {
 216                                 for (final InputLine input : getFirstLines()) {
 217                                     final Matcher matcher = input.getPattern().matcher(line);
 218                                     if (matcher.find()) {
 219                                         context.setLocation(new TmfLocation<Long>(rawPos));
 220                                         context.firstLineMatcher = matcher;
 221                                         context.firstLine = line;
 222                                         context.nextLineLocation = context.raFile.getFilePointer();
 223                                         context.inputLine = input;
 224                                         return event;
 225                                     }
 226                                 }
 227                             }
 228                             for (final InputLine input : nextInputs) {
 229                                 final Matcher matcher = input.getPattern().matcher(line);
 230                                 if (matcher.find()) {
 231                                     event.processGroups(input, matcher);
 232                                     currentInput = input;
 233                                     if (countMap.get(currentInput) == null) {
 234                                         countMap.put(currentInput, 1);
 235                                     } else {
 236                                         countMap.put(currentInput, countMap.get(currentInput) + 1);
 237                                     }
 238                                     Iterator<InputLine> iter = countMap.keySet().iterator();
 239                                     while (iter.hasNext()) {
 240                                         final InputLine inputLine = iter.next();
 241                                         if (inputLine.level > currentInput.level) {
 242                                             iter.remove();
 243                                         }
 244                                     }
 245                                     if (currentInput.childrenInputs != null && currentInput.childrenInputs.size() > 0) {
 246                                         currentInput = currentInput.childrenInputs.get(0);
 247                                         countMap.put(currentInput, 0);
 248                                     } else if (countMap.get(currentInput) >= currentInput.getMaxCount())
 249                                         if (currentInput.getNextInputs(countMap).size() > 0) {
 250                                             currentInput = currentInput.getNextInputs(countMap).get(0);
 251                                             if (countMap.get(currentInput) == null) {
 252                                                 countMap.put(currentInput, 0);
 253                                             }
 254                                             iter = countMap.keySet().iterator();
 255                                             while (iter.hasNext()) {
 256                                                 final InputLine inputLine = iter.next();
 257                                                 if (inputLine.level > currentInput.level) {
 258                                                     iter.remove();
 259                                                 }
 260                                             }
 261                                         } else {
 262                                             currentInput = null;
 263                                         }
 264                                     processed = true;
 265                                     break;
 266                                 }
 267                             }
 268                         }
 269                         if (! processed) {
 270                             final Matcher matcher = currentInput.getPattern().matcher(line);
 271                             if (matcher.find()) {
 272                                 event.processGroups(currentInput, matcher);
 273                                 countMap.put(currentInput, countMap.get(currentInput) + 1);
 274                                 if (currentInput.childrenInputs != null && currentInput.childrenInputs.size() > 0) {
 275                                     currentInput = currentInput.childrenInputs.get(0);
 276                                     countMap.put(currentInput, 0);
 277                                 } else if (countMap.get(currentInput) >= currentInput.getMaxCount())
 278                                     if (currentInput.getNextInputs(countMap).size() > 0) {
 279                                         currentInput = currentInput.getNextInputs(countMap).get(0);
 280                                         if (countMap.get(currentInput) == null) {
 281                                             countMap.put(currentInput, 0);
 282                                         }
 283                                         final Iterator<InputLine> iter = countMap.keySet().iterator();
 284                                         while (iter.hasNext()) {
 285                                             final InputLine inputLine = iter.next();
 286                                             if (inputLine.level > currentInput.level) {
 287                                                 iter.remove();
 288                                             }
 289                                         }
 290                                     } else {
 291                                         currentInput = null;
 292                                     }
 293                             }
 294                             ((StringBuffer) event.getContent().getValue()).append("\n").append(line); //$NON-NLS-1$
 295                         }
 296                     }
 297                     rawPos = context.raFile.getFilePointer();
 298                 }
 299             } catch (final IOException e) {
 300                 Activator.getDefault().logError("Error seeking event. File: " + getPath(), e); //$NON-NLS-1$
 301             }
 302         }
 303         for(final Entry<InputLine, Integer> entry : countMap.entrySet())
 304             if (entry.getValue() < entry.getKey().getMinCount()) {
 305                 event = null;
 306             }
 307         context.setLocation(NULL_LOCATION);
 308         return event;
 309     }
 310
 311     public List<InputLine> getFirstLines() {
 312         return fDefinition.inputs;
 313     }
 314
 315     public CustomTxtEvent parseFirstLine(final CustomTxtTraceContext context) {
 316         final CustomTxtEvent event = new CustomTxtEvent(fDefinition, this, TmfTimestamp.ZERO, "", fEventType, ""); //$NON-NLS-1$ //$NON-NLS-2$
 317         event.processGroups(context.inputLine, context.firstLineMatcher);
 318         event.setContent(new CustomEventContent(event, context.firstLine));
 319         return event;
 320     }
 321
 322     public CustomTraceDefinition getDefinition() {
 323         return fDefinition;
 324     }
 325
 326     /* (non-Javadoc)
 327      * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#validate(org.eclipse.core.resources.IProject, java.lang.String)
 328      */
 329     @Override
 330     public boolean validate(IProject project, String path) {
 331         return fileExists(path);
 332     }
 333 }