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