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