org.eclipse.linuxtools.tmf.core.tests/stubs/org/eclipse/linuxtools/tmf/tests/stubs/component/TmfSyntheticEventProviderStub.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2013 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.component;
  14
  15 import java.util.concurrent.TimeUnit;
  16
  17 import org.eclipse.linuxtools.internal.tmf.core.component.TmfProviderManager;
  18 import org.eclipse.linuxtools.tmf.core.component.ITmfDataProvider;
  19 import org.eclipse.linuxtools.tmf.core.component.TmfEventProvider;
  20 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  21 import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest;
  22 import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest;
  23 import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest;
  24 import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType;
  25 import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimeRange;
  26 import org.eclipse.linuxtools.tmf.core.trace.ITmfContext;
  27 import org.eclipse.linuxtools.tmf.core.trace.TmfContext;
  28 import org.eclipse.linuxtools.tmf.tests.stubs.event.TmfSyntheticEventStub;
  29
  30 /**
  31  * <b><u>TmfSyntheticEventProviderStub</u></b>
  32  * <p>
  33  * TODO: Implement me. Please.
  34  */
  35 @SuppressWarnings("javadoc")
  36 public class TmfSyntheticEventProviderStub extends TmfEventProvider {
  37
  38     public static final int NB_EVENTS  = 1000;
  39
  40     public TmfSyntheticEventProviderStub() {
  41         super("TmfSyntheticEventProviderStub", TmfSyntheticEventStub.class);
  42     }
  43
  44     @Override
  45     public ITmfContext armRequest(final ITmfDataRequest request) {
  46
  47         // Get the TmfSyntheticEventStub provider
  48         final ITmfDataProvider[] eventProviders = TmfProviderManager.getProviders(ITmfEvent.class, TmfEventProviderStub.class);
  49         final ITmfDataProvider provider = eventProviders[0];
  50
  51         // make sure we have the right type of request
  52         if (!(request instanceof ITmfEventRequest)) {
  53             request.cancel();
  54             return null;
  55         }
  56
  57         final TmfEventRequest eventRequest = (TmfEventRequest) request;
  58         final TmfTimeRange range = eventRequest.getRange();
  59         final TmfEventRequest subRequest =
  60                 new TmfEventRequest(ITmfEvent.class, range, 0, NB_EVENTS, ExecutionType.FOREGROUND) {
  61             @Override
  62             public void handleData(final ITmfEvent event) {
  63                 super.handleData(event);
  64                 if (event != null) {
  65                     handleIncomingData(event);
  66                 } else {
  67                     request.done();
  68                 }
  69             }
  70         };
  71         provider.sendRequest(subRequest);
  72
  73         // Return a dummy context
  74         return new TmfContext();
  75     }
  76
  77     // Queue 2 synthetic events per base event
  78     private void handleIncomingData(final ITmfEvent e) {
  79         queueResult(new TmfSyntheticEventStub(e));
  80         queueResult(new TmfSyntheticEventStub(e));
  81     }
  82
  83     private static final int TIMEOUT = 10000;
  84
  85     @Override
  86     public TmfSyntheticEventStub getNext(final ITmfContext context) {
  87         TmfSyntheticEventStub data = null;
  88         try {
  89             data = (TmfSyntheticEventStub) fDataQueue.poll(TIMEOUT, TimeUnit.MILLISECONDS);
  90             if (data == null) {
  91                 throw new InterruptedException();
  92             }
  93         }
  94         catch (final InterruptedException e) {
  95         }
  96         return data;
  97     }
  98
  99     public void queueResult(final TmfSyntheticEventStub data) {
 100         boolean ok = false;
 101         try {
 102             ok = fDataQueue.offer(data, TIMEOUT, TimeUnit.MILLISECONDS);
 103             if (!ok) {
 104                 throw new InterruptedException();
 105             }
 106         }
 107         catch (final InterruptedException e) {
 108         }
 109     }
 110
 111 }