org.eclipse.linuxtools.lttng.ui.tests/stubs/org/eclipse/linuxtools/internal/lttng/stubs/LTTngTraceStub.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 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  *   Francois Chouinard (fchouinard@gmail.com) - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.internal.lttng.stubs;
  14
  15 import java.io.FileNotFoundException;
  16 import java.io.IOException;
  17 import java.io.RandomAccessFile;
  18
  19 import org.eclipse.core.resources.IResource;
  20 import org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent;
  21 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  22 import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
  23 import org.eclipse.linuxtools.tmf.core.trace.ITmfContext;
  24 import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser;
  25 import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation;
  26 import org.eclipse.linuxtools.tmf.core.trace.TmfContext;
  27 import org.eclipse.linuxtools.tmf.core.trace.TmfLocation;
  28 import org.eclipse.linuxtools.tmf.core.trace.TmfTrace;
  29
  30 /**
  31  * <b><u>LTTngTraceStub</u></b>
  32  * <p>
  33  * Dummy test trace. Use in conjunction with LTTngEventParserStub.
  34  */
  35 @SuppressWarnings("nls")
  36 public class LTTngTraceStub extends TmfTrace<LttngEvent> implements ITmfEventParser<LttngEvent> {
  37
  38     // ========================================================================
  39     // Attributes
  40     // ========================================================================
  41
  42     // The actual stream
  43     private final RandomAccessFile fTrace;
  44
  45     // The associated event parser
  46     private final ITmfEventParser<LttngEvent> fParser;
  47
  48     // ========================================================================
  49     // Constructors
  50     // ========================================================================
  51
  52     /**
  53      * @param filename
  54      * @param parser
  55      * @throws FileNotFoundException
  56      */
  57     public LTTngTraceStub(final IResource resource) throws TmfTraceException {
  58         this(resource, DEFAULT_TRACE_CACHE_SIZE);
  59     }
  60
  61     /**
  62      * @param filename
  63      * @param parser
  64      * @param cacheSize
  65      * @throws FileNotFoundException
  66      */
  67     public LTTngTraceStub(final IResource resource, final int cacheSize) throws TmfTraceException {
  68         //      super(resource, LttngEvent.class, resource.getName(), cacheSize, true);
  69         super(resource, LttngEvent.class, resource.getName(), cacheSize);
  70         try {
  71             fTrace = new RandomAccessFile(resource.getName(), "r");
  72         } catch (FileNotFoundException e) {
  73             throw new TmfTraceException(e.getMessage());
  74         }
  75         fParser = new LTTngEventParserStub();
  76     }
  77
  78     public void indexTrace() {
  79         fIndexer.buildIndex(true);
  80     }
  81
  82     // ========================================================================
  83     // Accessors
  84     // ========================================================================
  85
  86     public RandomAccessFile getStream() {
  87         return fTrace;
  88     }
  89
  90     // ========================================================================
  91     // Operators
  92     // ========================================================================
  93
  94     /* (non-Javadoc)
  95      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object)
  96      */
  97     @Override
  98     @SuppressWarnings("unchecked")
  99     public TmfContext seekEvent(final ITmfLocation<?> location) {
 100         TmfContext context = null;
 101         try {
 102             synchronized(fTrace) {
 103                 fTrace.seek((location != null) ? ((TmfLocation<Long>) location).getLocation() : 0);
 104                 context = new TmfContext(getCurrentLocation(), 0);
 105                 //                      TmfTraceContext context2 = new TmfTraceContext(getCurrentLocation(), 0);
 106                 //                      TmfEvent event = parseEvent(context2);
 107                 //                      context.setTimestamp(event.getTimestamp());
 108             }
 109         } catch (final IOException e) {
 110             // TODO Auto-generated catch block
 111             e.printStackTrace();
 112         }
 113         return context;
 114     }
 115
 116     @Override
 117     public TmfContext seekEvent(final double ratio) {
 118         // TODO Auto-generated method stub
 119         return null;
 120     }
 121
 122     @Override
 123     public double getLocationRatio(final ITmfLocation<?> location) {
 124         // TODO Auto-generated method stub
 125         return 0;
 126     }
 127
 128     /* (non-Javadoc)
 129      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation()
 130      */
 131     @Override
 132     public ITmfLocation<?> getCurrentLocation() {
 133         try {
 134             return new TmfLocation<Long>(fTrace.getFilePointer());
 135         } catch (final IOException e) {
 136             // TODO Auto-generated catch block
 137             e.printStackTrace();
 138         }
 139         return null;
 140     }
 141
 142     /* (non-Javadoc)
 143      * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#parseEvent()
 144      */
 145     @Override
 146     public ITmfEvent parseEvent(final ITmfContext context) {
 147 //        try {
 148             // paserNextEvent updates the context
 149             final LttngEvent event = (LttngEvent) fParser.parseEvent(context);
 150             //                          if (event != null) {
 151             //                                  context.setTimestamp(event.getTimestamp());
 152             //                          }
 153             return event;
 154 //        }
 155 //        catch (final IOException e) {
 156 //            e.printStackTrace();
 157 //        }
 158 //        return null;
 159     }
 160
 161     /* (non-Javadoc)
 162      * @see java.lang.Object#toString()
 163      */
 164     @Override
 165     public String toString() {
 166         return "[LTTngTraceStub]";
 167     }
 168
 169     //    // ========================================================================
 170     //    // Helper functions
 171     //    // ========================================================================
 172     //
 173     //    /* (non-Javadoc)
 174     //     * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes()
 175     //     */
 176     //    public Map<String, Object> getAttributes() {
 177     //        // TODO Auto-generated method stub
 178     //        return null;
 179     //    }
 180
 181 }