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.IProject;
  20 import org.eclipse.core.resources.IResource;
  21 import org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent;
  22 import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
  23 import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
  24 import org.eclipse.linuxtools.tmf.core.trace.ITmfContext;
  25 import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser;
  26 import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation;
  27 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  28 import org.eclipse.linuxtools.tmf.core.trace.TmfContext;
  29 import org.eclipse.linuxtools.tmf.core.trace.TmfLocation;
  30 import org.eclipse.linuxtools.tmf.core.trace.TmfTrace;
  31
  32 /**
  33  * <b><u>LTTngTraceStub</u></b>
  34  * <p>
  35  * Dummy test trace. Use in conjunction with LTTngEventParserStub.
  36  */
  37 @SuppressWarnings("nls")
  38 public class LTTngTraceStub extends TmfTrace implements ITmfEventParser {
  39
  40     // ========================================================================
  41     // Attributes
  42     // ========================================================================
  43
  44     // The actual stream
  45     private final RandomAccessFile fTrace;
  46
  47     // The associated event parser
  48     private final ITmfEventParser fParser;
  49
  50     // ========================================================================
  51     // Constructors
  52     // ========================================================================
  53
  54     /**
  55      * @param filename
  56      * @param parser
  57      * @throws FileNotFoundException
  58      */
  59     public LTTngTraceStub(final IResource resource) throws TmfTraceException {
  60         this(resource, ITmfTrace.DEFAULT_TRACE_CACHE_SIZE);
  61     }
  62
  63     /**
  64      * @param filename
  65      * @param parser
  66      * @param cacheSize
  67      * @throws FileNotFoundException
  68      */
  69     public LTTngTraceStub(final IResource resource, final int cacheSize) throws TmfTraceException {
  70         //      super(resource, LttngEvent.class, resource.getName(), cacheSize, true);
  71         super(resource, LttngEvent.class, resource.getName(), cacheSize);
  72         try {
  73             fTrace = new RandomAccessFile(resource.getName(), "r");
  74         } catch (FileNotFoundException e) {
  75             throw new TmfTraceException(e.getMessage());
  76         }
  77         fParser = new LTTngEventParserStub();
  78     }
  79
  80     public void indexTrace() {
  81         getIndexer().buildIndex(0, TmfTimeRange.ETERNITY, true);
  82     }
  83
  84     // ========================================================================
  85     // Accessors
  86     // ========================================================================
  87
  88     public RandomAccessFile getStream() {
  89         return fTrace;
  90     }
  91
  92     // ========================================================================
  93     // Operators
  94     // ========================================================================
  95
  96     /* (non-Javadoc)
  97      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#seekLocation(java.lang.Object)
  98      */
  99     @Override
 100     @SuppressWarnings("unchecked")
 101     public TmfContext seekEvent(final ITmfLocation<?> location) {
 102         TmfContext context = null;
 103         try {
 104             synchronized(fTrace) {
 105                 fTrace.seek((location != null) ? ((TmfLocation<Long>) location).getLocation() : 0);
 106                 context = new TmfContext(getCurrentLocation(), 0);
 107                 //                      TmfTraceContext context2 = new TmfTraceContext(getCurrentLocation(), 0);
 108                 //                      TmfEvent event = parseEvent(context2);
 109                 //                      context.setTimestamp(event.getTimestamp());
 110             }
 111         } catch (final IOException e) {
 112             // TODO Auto-generated catch block
 113             e.printStackTrace();
 114         }
 115         return context;
 116     }
 117
 118     @Override
 119     public TmfContext seekEvent(final double ratio) {
 120         // TODO Auto-generated method stub
 121         return null;
 122     }
 123
 124     @Override
 125     public double getLocationRatio(final ITmfLocation<?> location) {
 126         // TODO Auto-generated method stub
 127         return 0;
 128     }
 129
 130     /* (non-Javadoc)
 131      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfStreamLocator#getCurrentLocation()
 132      */
 133     @Override
 134     public ITmfLocation<?> getCurrentLocation() {
 135         try {
 136             return new TmfLocation<Long>(fTrace.getFilePointer());
 137         } catch (final IOException e) {
 138             // TODO Auto-generated catch block
 139             e.printStackTrace();
 140         }
 141         return null;
 142     }
 143
 144     /* (non-Javadoc)
 145      * @see org.eclipse.linuxtools.tmf.trace.ITmfTrace#parseEvent()
 146      */
 147     @Override
 148     public LttngEvent parseEvent(final ITmfContext context) {
 149 //        try {
 150             // paserNextEvent updates the context
 151             final LttngEvent event = (LttngEvent) fParser.parseEvent(context);
 152             //                          if (event != null) {
 153             //                                  context.setTimestamp(event.getTimestamp());
 154             //                          }
 155             return event;
 156 //        }
 157 //        catch (final IOException e) {
 158 //            e.printStackTrace();
 159 //        }
 160 //        return null;
 161     }
 162
 163     /* (non-Javadoc)
 164      * @see java.lang.Object#toString()
 165      */
 166     @Override
 167     public String toString() {
 168         return "[LTTngTraceStub]";
 169     }
 170
 171     /* (non-Javadoc)
 172      * @see org.eclipse.linuxtools.tmf.core.trace.ITmfTrace#validate(org.eclipse.core.resources.IProject, java.lang.String)
 173      */
 174     @Override
 175     public boolean validate(IProject project, String path) {
 176         return fileExists(path);
 177     }
 178
 179     //    // ========================================================================
 180     //    // Helper functions
 181     //    // ========================================================================
 182     //
 183     //    /* (non-Javadoc)
 184     //     * @see org.eclipse.linuxtools.tmf.eventlog.ITmfEventStream#getAttributes()
 185     //     */
 186     //    public Map<String, Object> getAttributes() {
 187     //        // TODO Auto-generated method stub
 188     //        return null;
 189     //    }
 190
 191 }