org.eclipse.linuxtools.tmf.core.tests/stubs/org/eclipse/linuxtools/tmf/tests/stubs/trace/TmfEventParserStub.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2014 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 - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.tests.stubs.trace;
  14
  15 import java.io.EOFException;
  16 import java.io.IOException;
  17 import java.io.RandomAccessFile;
  18 import java.util.Vector;
  19
  20 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  21 import org.eclipse.linuxtools.tmf.core.event.ITmfEventField;
  22 import org.eclipse.linuxtools.tmf.core.event.TmfEvent;
  23 import org.eclipse.linuxtools.tmf.core.event.TmfEventField;
  24 import org.eclipse.linuxtools.tmf.core.event.TmfEventType;
  25 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
  26 import org.eclipse.linuxtools.tmf.core.trace.ITmfContext;
  27 import org.eclipse.linuxtools.tmf.core.trace.ITmfEventParser;
  28 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  29
  30 /**
  31  * <b><u>TmfEventParserStub</u></b>
  32  * <p>
  33  * TODO: Implement me. Please.
  34  */
  35 @SuppressWarnings("javadoc")
  36 public class TmfEventParserStub implements ITmfEventParser {
  37
  38     // ------------------------------------------------------------------------
  39     // Attributes
  40     // ------------------------------------------------------------------------
  41
  42     private static final int NB_TYPES = 10;
  43     private final TmfEventType[] fTypes;
  44     private final ITmfTrace fEventStream;
  45
  46     // ------------------------------------------------------------------------
  47     // Constructors
  48     // ------------------------------------------------------------------------
  49
  50     public TmfEventParserStub(final ITmfTrace eventStream) {
  51         fEventStream = eventStream;
  52         fTypes = new TmfEventType[NB_TYPES];
  53         for (int i = 0; i < NB_TYPES; i++) {
  54             final Vector<String> fields = new Vector<>();
  55             for (int j = 1; j <= i; j++) {
  56                 final String field = "Fmt-" + i + "-Fld-" + j;
  57                 fields.add(field);
  58             }
  59             final String[] fieldArray = new String[i];
  60             final ITmfEventField rootField = TmfEventField.makeRoot(fields.toArray(fieldArray));
  61             fTypes[i] = new TmfEventType("UnitTest", "Type-" + i, rootField);
  62         }
  63     }
  64
  65     // ------------------------------------------------------------------------
  66     // Operators
  67     // ------------------------------------------------------------------------
  68
  69     static final String typePrefix = "Type-";
  70     @Override
  71     public ITmfEvent parseEvent(final ITmfContext context) {
  72
  73         if (! (fEventStream instanceof TmfTraceStub)) {
  74             return null;
  75         }
  76
  77         // Highly inefficient...
  78         final RandomAccessFile stream = ((TmfTraceStub) fEventStream).getStream();
  79         if (stream == null) {
  80             return null;
  81         }
  82
  83         //           String name = eventStream.getName();
  84         //           name = name.substring(name.lastIndexOf('/') + 1);
  85
  86         // no need to use synchronized since it's already cover by the calling method
  87
  88         long location = 0;
  89         if (context != null && context.getLocation() != null) {
  90             location = (Long) context.getLocation().getLocationInfo();
  91             try {
  92                 stream.seek(location);
  93
  94                 final long ts        = stream.readLong();
  95                 final String source  = stream.readUTF();
  96                 final String type    = stream.readUTF();
  97                 final int reference  = stream.readInt();
  98                 final int typeIndex  = Integer.parseInt(type.substring(typePrefix.length()));
  99                 final String[] fields = new String[typeIndex];
 100                 for (int i = 0; i < typeIndex; i++) {
 101                     fields[i] = stream.readUTF();
 102                 }
 103
 104                 final StringBuffer content = new StringBuffer("[");
 105                 if (typeIndex > 0) {
 106                     content.append(fields[0]);
 107                 }
 108                 for (int i = 1; i < typeIndex; i++) {
 109                     content.append(", ").append(fields[i]);
 110                 }
 111                 content.append("]");
 112
 113                 final TmfEventField root = new TmfEventField(ITmfEventField.ROOT_FIELD_ID, content.toString(), null);
 114                 final ITmfEvent event = new TmfEvent(fEventStream,
 115                         new TmfTimestamp(ts, -3, 0),     // millisecs
 116                         source, fTypes[typeIndex], root, String.valueOf(reference));
 117                 return event;
 118             } catch (final EOFException e) {
 119             } catch (final IOException e) {
 120             }
 121         }
 122         return null;
 123     }
 124
 125 }