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