Add loadTaskId to LoadEventInfo

To be used by the LoadErrorHandlingPolicy.

PiperOrigin-RevId: 308657905

library/core/src/main/java/com/google/android/exoplayer2/source/LoadEventInfo.java

@@ -34,6 +34,8 @@ public final class LoadEventInfo {
     return idSource.getAndIncrement();
   }
 
+  /** Identifies the load task to which this event corresponds. */
+  public final long loadTaskId;
   /** Defines the requested data. */
   public final DataSpec dataSpec;
   /**
@@ -52,11 +54,13 @@ public final class LoadEventInfo {
   public final long bytesLoaded;
 
   /**
-   * Equivalent to {@link #LoadEventInfo(DataSpec, Uri, Map, long, long, long)
+   * Equivalent to {@link #LoadEventInfo(long, DataSpec, Uri, Map, long, long, long)
-   * LoadEventInfo(dataSpec, dataSpec.uri, Collections.emptyMap(), elapsedRealtimeMs, 0, 0)}.
+   * LoadEventInfo(loadTaskId, dataSpec, dataSpec.uri, Collections.emptyMap(), elapsedRealtimeMs, 0,
+   * 0)}.
    */
-  public LoadEventInfo(DataSpec dataSpec, long elapsedRealtimeMs) {
+  public LoadEventInfo(long loadTaskId, DataSpec dataSpec, long elapsedRealtimeMs) {
     this(
+        loadTaskId,
         dataSpec,
         dataSpec.uri,
         Collections.emptyMap(),
@@ -68,25 +72,23 @@ public final class LoadEventInfo {
   /**
    * Creates load event info.
    *
-   * @param dataSpec Defines the requested data.
+   * @param loadTaskId See {@link #loadTaskId}.
-   * @param uri The {@link Uri} from which data is being read. The uri must be identical to the one
+   * @param dataSpec See {@link #dataSpec}.
-   *     in {@code dataSpec.uri} unless redirection has occurred. If redirection has occurred, this
+   * @param uri See {@link #uri}.
-   *     is the uri after redirection.
+   * @param responseHeaders See {@link #responseHeaders}.
-   * @param responseHeaders The response headers associated with the load, or an empty map if
+   * @param elapsedRealtimeMs See {@link #elapsedRealtimeMs}.
-   *     unavailable.
+   * @param loadDurationMs See {@link #loadDurationMs}.
-   * @param elapsedRealtimeMs The value of {@link SystemClock#elapsedRealtime} at the time of the
+   * @param bytesLoaded See {@link #bytesLoaded}.
-   *     load event.
-   * @param loadDurationMs The duration of the load up to the event time.
-   * @param bytesLoaded The number of bytes that were loaded up to the event time. For compressed
-   *     network responses, this is the decompressed size.
    */
   public LoadEventInfo(
+      long loadTaskId,
       DataSpec dataSpec,
       Uri uri,
       Map<String, List<String>> responseHeaders,
       long elapsedRealtimeMs,
       long loadDurationMs,
       long bytesLoaded) {
+    this.loadTaskId = loadTaskId;
     this.dataSpec = dataSpec;
     this.uri = uri;
     this.responseHeaders = responseHeaders;

library/core/src/main/java/com/google/android/exoplayer2/source/ProgressiveMediaPeriod.java

@@ -555,6 +555,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     StatsDataSource dataSource = loadable.dataSource;
     eventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             dataSource.getLastOpenedUri(),
             dataSource.getLastResponseHeaders(),
@@ -579,6 +580,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     StatsDataSource dataSource = loadable.dataSource;
     eventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             dataSource.getLastOpenedUri(),
             dataSource.getLastResponseHeaders(),
@@ -628,6 +630,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     StatsDataSource dataSource = loadable.dataSource;
     eventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             dataSource.getLastOpenedUri(),
             dataSource.getLastResponseHeaders(),
@@ -789,7 +792,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
             loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(dataType));
     DataSpec dataSpec = loadable.dataSpec;
     eventDispatcher.loadStarted(
-        new LoadEventInfo(dataSpec, elapsedRealtimeMs),
+        new LoadEventInfo(loadable.loadTaskId, dataSpec, elapsedRealtimeMs),
         C.DATA_TYPE_MEDIA,
         C.TRACK_TYPE_UNKNOWN,
         /* trackFormat= */ null,
@@ -928,6 +931,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
   /** Loads the media stream and extracts sample data from it. */
   /* package */ final class ExtractingLoadable implements Loadable, IcyDataSource.Listener {
 
+    private final long loadTaskId;
     private final Uri uri;
     private final StatsDataSource dataSource;
     private final ProgressiveMediaExtractor progressiveMediaExtractor;
@@ -959,6 +963,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
       this.positionHolder = new PositionHolder();
       this.pendingExtractorSeek = true;
       this.length = C.LENGTH_UNSET;
+      loadTaskId = LoadEventInfo.getNewId();
       dataSpec = buildDataSpec(/* position= */ 0);
     }
 

library/core/src/main/java/com/google/android/exoplayer2/source/SingleSampleMediaPeriod.java

@@ -154,13 +154,14 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     if (transferListener != null) {
       dataSource.addTransferListener(transferListener);
     }
+    SourceLoadable loadable = new SourceLoadable(dataSpec, dataSource);
     long elapsedRealtimeMs =
         loader.startLoading(
-            new SourceLoadable(dataSpec, dataSource),
+            loadable,
             /* callback= */ this,
             loadErrorHandlingPolicy.getMinimumLoadableRetryCount(C.DATA_TYPE_MEDIA));
     eventDispatcher.loadStarted(
-        new LoadEventInfo(dataSpec, elapsedRealtimeMs),
+        new LoadEventInfo(loadable.loadTaskId, dataSpec, elapsedRealtimeMs),
         C.DATA_TYPE_MEDIA,
         C.TRACK_TYPE_UNKNOWN,
         format,
@@ -219,6 +220,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     StatsDataSource dataSource = loadable.dataSource;
     eventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             dataSource.getLastOpenedUri(),
             dataSource.getLastResponseHeaders(),
@@ -240,6 +242,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     StatsDataSource dataSource = loadable.dataSource;
     eventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             dataSource.getLastOpenedUri(),
             dataSource.getLastResponseHeaders(),
@@ -283,6 +286,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     StatsDataSource dataSource = loadable.dataSource;
     eventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             dataSource.getLastOpenedUri(),
             dataSource.getLastResponseHeaders(),
@@ -382,6 +386,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 
   /* package */ static final class SourceLoadable implements Loadable {
 
+    public final long loadTaskId;
     public final DataSpec dataSpec;
 
     private final StatsDataSource dataSource;
@@ -389,6 +394,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     @Nullable private byte[] sampleData;
 
     public SourceLoadable(DataSpec dataSpec, DataSource dataSource) {
+      this.loadTaskId = LoadEventInfo.getNewId();
       this.dataSpec = dataSpec;
       this.dataSource = new StatsDataSource(dataSource);
     }

library/core/src/main/java/com/google/android/exoplayer2/source/ads/AdsMediaSource.java

@@ -355,7 +355,10 @@ public final class AdsMediaSource extends CompositeMediaSource<MediaPeriodId> {
       }
       createEventDispatcher(/* mediaPeriodId= */ null)
           .loadError(
-              new LoadEventInfo(dataSpec, /* elapsedRealtimeMs= */ SystemClock.elapsedRealtime()),
+              new LoadEventInfo(
+                  LoadEventInfo.getNewId(),
+                  dataSpec,
+                  /* elapsedRealtimeMs= */ SystemClock.elapsedRealtime()),
               C.DATA_TYPE_AD,
               error,
               /* wasCanceled= */ true);
@@ -379,7 +382,9 @@ public final class AdsMediaSource extends CompositeMediaSource<MediaPeriodId> {
       createEventDispatcher(mediaPeriodId)
           .loadError(
               new LoadEventInfo(
-                  new DataSpec(adUri), /* elapsedRealtimeMs= */ SystemClock.elapsedRealtime()),
+                  LoadEventInfo.getNewId(),
+                  new DataSpec(adUri),
+                  /* elapsedRealtimeMs= */ SystemClock.elapsedRealtime()),
               C.DATA_TYPE_AD,
               AdLoadException.createForAd(exception),
               /* wasCanceled= */ true);

library/core/src/main/java/com/google/android/exoplayer2/source/chunk/Chunk.java

@@ -19,6 +19,7 @@ import android.net.Uri;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
+import com.google.android.exoplayer2.source.LoadEventInfo;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DataSpec;
 import com.google.android.exoplayer2.upstream.Loader.Loadable;
@@ -33,9 +34,9 @@ import java.util.Map;
  */
 public abstract class Chunk implements Loadable {
 
-  /**
+  /** Identifies the load task for this loadable. */
-   * The {@link DataSpec} that defines the data to be loaded.
+  public final long loadTaskId;
-   */
+  /** The {@link DataSpec} that defines the data to be loaded. */
   public final DataSpec dataSpec;
   /**
    * The type of the chunk. One of the {@code DATA_TYPE_*} constants defined in {@link C}. For
@@ -95,6 +96,7 @@ public abstract class Chunk implements Loadable {
     this.trackSelectionData = trackSelectionData;
     this.startTimeUs = startTimeUs;
     this.endTimeUs = endTimeUs;
+    loadTaskId = LoadEventInfo.getNewId();
   }
 
   /**

library/core/src/main/java/com/google/android/exoplayer2/source/chunk/ChunkSampleStream.java

@@ -407,6 +407,7 @@ public class ChunkSampleStream<T extends ChunkSource> implements SampleStream, S
     chunkSource.onChunkLoadCompleted(loadable);
     eventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -428,6 +429,7 @@ public class ChunkSampleStream<T extends ChunkSource> implements SampleStream, S
       Chunk loadable, long elapsedRealtimeMs, long loadDurationMs, boolean released) {
     eventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -497,6 +499,7 @@ public class ChunkSampleStream<T extends ChunkSource> implements SampleStream, S
     boolean canceled = !loadErrorAction.isRetry();
     eventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -568,7 +571,7 @@ public class ChunkSampleStream<T extends ChunkSource> implements SampleStream, S
         loader.startLoading(
             loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(loadable.type));
     eventDispatcher.loadStarted(
-        new LoadEventInfo(loadable.dataSpec, elapsedRealtimeMs),
+        new LoadEventInfo(loadable.loadTaskId, loadable.dataSpec, elapsedRealtimeMs),
         loadable.type,
         primaryTrackType,
         loadable.trackFormat,

library/core/src/main/java/com/google/android/exoplayer2/upstream/ParsingLoadable.java

@@ -19,6 +19,7 @@ import android.net.Uri;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ParserException;
+import com.google.android.exoplayer2.source.LoadEventInfo;
 import com.google.android.exoplayer2.upstream.Loader.Loadable;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Util;
@@ -87,9 +88,9 @@ public final class ParsingLoadable<T> implements Loadable {
     return Assertions.checkNotNull(loadable.getResult());
   }
 
-  /**
+  /** Identifies the load task for this loadable. */
-   * The {@link DataSpec} that defines the data to be loaded.
+  public final long loadTaskId;
-   */
+  /** The {@link DataSpec} that defines the data to be loaded. */
   public final DataSpec dataSpec;
   /**
    * The type of the data. One of the {@code DATA_TYPE_*} constants defined in {@link C}. For
@@ -128,6 +129,7 @@ public final class ParsingLoadable<T> implements Loadable {
     this.dataSpec = dataSpec;
     this.type = type;
     this.parser = parser;
+    loadTaskId = LoadEventInfo.getNewId();
   }
 
   /** Returns the loaded object, or null if an object has not been loaded. */

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java

@@ -756,6 +756,7 @@ public final class DashMediaSource extends BaseMediaSource {
       long elapsedRealtimeMs, long loadDurationMs) {
     manifestEventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -859,6 +860,7 @@ public final class DashMediaSource extends BaseMediaSource {
             : Loader.createRetryAction(/* resetErrorCount= */ false, retryDelayMs);
     manifestEventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -875,6 +877,7 @@ public final class DashMediaSource extends BaseMediaSource {
       long elapsedRealtimeMs, long loadDurationMs) {
     manifestEventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -892,6 +895,7 @@ public final class DashMediaSource extends BaseMediaSource {
       IOException error) {
     manifestEventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -909,6 +913,7 @@ public final class DashMediaSource extends BaseMediaSource {
       long loadDurationMs) {
     manifestEventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -1129,7 +1134,8 @@ public final class DashMediaSource extends BaseMediaSource {
       Loader.Callback<ParsingLoadable<T>> callback, int minRetryCount) {
     long elapsedRealtimeMs = loader.startLoading(loadable, callback, minRetryCount);
     manifestEventDispatcher.loadStarted(
-        new LoadEventInfo(loadable.dataSpec, elapsedRealtimeMs), loadable.type);
+        new LoadEventInfo(loadable.loadTaskId, loadable.dataSpec, elapsedRealtimeMs),
+        loadable.type);
   }
 
   private static final class PeriodSeekInfo {

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java

@@ -676,7 +676,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
         loader.startLoading(
             loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(loadable.type));
     eventDispatcher.loadStarted(
-        new LoadEventInfo(loadable.dataSpec, elapsedRealtimeMs),
+        new LoadEventInfo(loadable.loadTaskId, loadable.dataSpec, elapsedRealtimeMs),
         loadable.type,
         trackType,
         loadable.trackFormat,
@@ -704,6 +704,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
     chunkSource.onChunkLoadCompleted(loadable);
     eventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -729,6 +730,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
       Chunk loadable, long elapsedRealtimeMs, long loadDurationMs, boolean released) {
     eventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -790,6 +792,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
 
     eventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/playlist/DefaultHlsPlaylistTracker.java

@@ -136,7 +136,8 @@ public final class DefaultHlsPlaylistTracker
             this,
             loadErrorHandlingPolicy.getMinimumLoadableRetryCount(masterPlaylistLoadable.type));
     eventDispatcher.loadStarted(
-        new LoadEventInfo(masterPlaylistLoadable.dataSpec, elapsedRealtime),
+        new LoadEventInfo(
+            masterPlaylistLoadable.loadTaskId, masterPlaylistLoadable.dataSpec, elapsedRealtime),
         masterPlaylistLoadable.type);
   }
 
@@ -243,6 +244,7 @@ public final class DefaultHlsPlaylistTracker
     }
     eventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -260,6 +262,7 @@ public final class DefaultHlsPlaylistTracker
       boolean released) {
     eventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -282,6 +285,7 @@ public final class DefaultHlsPlaylistTracker
     boolean isFatal = retryDelayMs == C.TIME_UNSET;
     eventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -525,6 +529,7 @@ public final class DefaultHlsPlaylistTracker
         processLoadedPlaylist((HlsMediaPlaylist) result, loadDurationMs);
         eventDispatcher.loadCompleted(
             new LoadEventInfo(
+                loadable.loadTaskId,
                 loadable.dataSpec,
                 loadable.getUri(),
                 loadable.getResponseHeaders(),
@@ -545,6 +550,7 @@ public final class DefaultHlsPlaylistTracker
         boolean released) {
       eventDispatcher.loadCanceled(
           new LoadEventInfo(
+              loadable.loadTaskId,
               loadable.dataSpec,
               loadable.getUri(),
               loadable.getResponseHeaders(),
@@ -588,6 +594,7 @@ public final class DefaultHlsPlaylistTracker
 
       eventDispatcher.loadError(
           new LoadEventInfo(
+              loadable.loadTaskId,
               loadable.dataSpec,
               loadable.getUri(),
               loadable.getResponseHeaders(),
@@ -618,7 +625,8 @@ public final class DefaultHlsPlaylistTracker
               this,
               loadErrorHandlingPolicy.getMinimumLoadableRetryCount(mediaPlaylistLoadable.type));
       eventDispatcher.loadStarted(
-          new LoadEventInfo(mediaPlaylistLoadable.dataSpec, elapsedRealtime),
+          new LoadEventInfo(
+              mediaPlaylistLoadable.loadTaskId, mediaPlaylistLoadable.dataSpec, elapsedRealtime),
           mediaPlaylistLoadable.type);
     }
 

library/smoothstreaming/src/main/java/com/google/android/exoplayer2/source/smoothstreaming/SsMediaSource.java

@@ -623,6 +623,7 @@ public final class SsMediaSource extends BaseMediaSource
       ParsingLoadable<SsManifest> loadable, long elapsedRealtimeMs, long loadDurationMs) {
     manifestEventDispatcher.loadCompleted(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -644,6 +645,7 @@ public final class SsMediaSource extends BaseMediaSource
       boolean released) {
     manifestEventDispatcher.loadCanceled(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -669,6 +671,7 @@ public final class SsMediaSource extends BaseMediaSource
             : Loader.createRetryAction(/* resetErrorCount= */ false, retryDelayMs);
     manifestEventDispatcher.loadError(
         new LoadEventInfo(
+            loadable.loadTaskId,
             loadable.dataSpec,
             loadable.getUri(),
             loadable.getResponseHeaders(),
@@ -772,7 +775,8 @@ public final class SsMediaSource extends BaseMediaSource
         manifestLoader.startLoading(
             loadable, this, loadErrorHandlingPolicy.getMinimumLoadableRetryCount(loadable.type));
     manifestEventDispatcher.loadStarted(
-        new LoadEventInfo(loadable.dataSpec, elapsedRealtimeMs), loadable.type);
+        new LoadEventInfo(loadable.loadTaskId, loadable.dataSpec, elapsedRealtimeMs),
+        loadable.type);
   }
 
 }

testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeMediaPeriod.java

@@ -50,6 +50,7 @@ public class FakeMediaPeriod implements MediaPeriod {
   private final TrackGroupArray trackGroupArray;
   private final List<SampleStream> sampleStreams;
   private final EventDispatcher eventDispatcher;
+  private final long fakePreparationLoadTaskId;
 
   @Nullable private Handler playerHandler;
   @Nullable private Callback prepareCallback;
@@ -82,6 +83,7 @@ public class FakeMediaPeriod implements MediaPeriod {
     this.deferOnPrepared = deferOnPrepared;
     discontinuityPositionUs = C.TIME_UNSET;
     sampleStreams = new ArrayList<>();
+    fakePreparationLoadTaskId = LoadEventInfo.getNewId();
     eventDispatcher.mediaPeriodCreated();
   }
 
@@ -122,7 +124,7 @@ public class FakeMediaPeriod implements MediaPeriod {
   @Override
   public synchronized void prepare(Callback callback, long positionUs) {
     eventDispatcher.loadStarted(
-        new LoadEventInfo(FAKE_DATA_SPEC, SystemClock.elapsedRealtime()),
+        new LoadEventInfo(fakePreparationLoadTaskId, FAKE_DATA_SPEC, SystemClock.elapsedRealtime()),
         C.DATA_TYPE_MEDIA,
         C.TRACK_TYPE_UNKNOWN,
         /* trackFormat= */ null,
@@ -274,6 +276,7 @@ public class FakeMediaPeriod implements MediaPeriod {
     Util.castNonNull(prepareCallback).onPrepared(this);
     eventDispatcher.loadCompleted(
         new LoadEventInfo(
+            fakePreparationLoadTaskId,
             FAKE_DATA_SPEC,
             FAKE_DATA_SPEC.uri,
             /* responseHeaders= */ Collections.emptyMap(),

testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeMediaSource.java

@@ -261,8 +261,10 @@ public class FakeMediaSource extends BaseMediaSource {
               /* mediaEndTimeMs = */ C.TIME_UNSET);
       long elapsedRealTimeMs = SystemClock.elapsedRealtime();
       EventDispatcher eventDispatcher = createEventDispatcher(/* mediaPeriodId= */ null);
+      long loadTaskId = LoadEventInfo.getNewId();
       eventDispatcher.loadStarted(
           new LoadEventInfo(
+              loadTaskId,
               FAKE_DATA_SPEC,
               FAKE_DATA_SPEC.uri,
               /* responseHeaders= */ Collections.emptyMap(),
@@ -272,6 +274,7 @@ public class FakeMediaSource extends BaseMediaSource {
           mediaLoadData);
       eventDispatcher.loadCompleted(
           new LoadEventInfo(
+              loadTaskId,
               FAKE_DATA_SPEC,
               FAKE_DATA_SPEC.uri,
               /* responseHeaders= */ Collections.emptyMap(),