org.eclipse.linuxtools.tmf.tests/stubs/org/eclipse/linuxtools/tmf/eventlog/TmfRequestHandlerStub.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
  14 package org.eclipse.linuxtools.tmf.eventlog;
  15
  16 import java.io.FileNotFoundException;
  17 import java.io.IOException;
  18 import java.util.Vector;
  19
  20 import org.eclipse.linuxtools.tmf.event.TmfEvent;
  21 import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
  22
  23 /**
  24  * <b><u>TmfRequestHandlerStub</u></b>
  25  * <p>
  26  * TODO: Implement me. Please.
  27  */
  28 public class TmfRequestHandlerStub implements ITmfRequestHandler {
  29
  30     // The test file
  31     String filename = "Test-100K";
  32
  33     // A constant to limit the number of events for the tests
  34     public static final int MAX_GENERATED_EVENTS = 1000;
  35
  36     private ITmfEventParser fParser;
  37     private TmfEventStreamStub fStream;
  38
  39     public TmfRequestHandlerStub() throws FileNotFoundException {
  40         fParser = new TmfEventParserStub();
  41         fStream = new TmfEventStreamStub(filename, fParser);
  42     }
  43
  44     /* (non-Javadoc)
  45      * @see org.eclipse.linuxtools.tmf.eventlog.ITmfRequestHandler#processRequest(org.eclipse.linuxtools.tmf.eventlog.TmfEventRequest, boolean)
  46      */
  47     public void process(final TmfEventRequest request, boolean waitForCompletion) {
  48
  49         Thread thread = new Thread() {
  50             @Override
  51             public void run() {
  52                 TmfTimestamp startTime = request.getRange().getStartTime();
  53                 TmfTimestamp endTime   = request.getRange().getEndTime();
  54                 int blockSize = request.getBlockize();
  55
  56                 int nbRequestedEvents = request.getNbRequestedEvents();
  57                 if (nbRequestedEvents <= 0) {
  58                     nbRequestedEvents = MAX_GENERATED_EVENTS;
  59                 }
  60
  61                 Vector<TmfEvent> events = new Vector<TmfEvent>();
  62                 int nbEvents = 0;
  63                 try {
  64                     TmfEvent event = fStream.seek(startTime);
  65                     while (!request.isCancelled() && nbEvents < nbRequestedEvents &&
  66                            event != null && event.getTimestamp().compareTo(endTime, false) <= 0 )
  67                     {
  68                         events.add(event);
  69                         if (++nbEvents % blockSize == 0) {
  70                             request.newEvents(events);
  71                             events.removeAllElements();
  72                         }
  73                         event = fStream.getNextEvent();
  74                     }
  75                     request.newEvents(events);
  76                     request.done();
  77                 } catch (IOException e) {
  78                     // TODO Auto-generated catch block
  79                     e.printStackTrace();
  80                 }
  81             }
  82         };
  83         thread.start();
  84
  85         if (waitForCompletion) {
  86             request.waitForCompletion();
  87         }
  88     }
  89
  90 }