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Extend TransferListener with onTransferInitializing and additional parameters.

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This allows more fine-grained analysis of transfers.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=203950327
This commit is contained in:
tonihei 2018-07-10 08:25:17 -07:00 committed by Oliver Woodman
parent 2b1434dfcb
commit c3df64f102
6 changed files with 165 additions and 41 deletions
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1
RELEASENOTES.md
View File

@ -29,6 +29,7 @@
directly reading data should implement `BaseDataSource` to handle the
registration correctly. Custom `DataSource`'s forwarding to other sources
should forward all calls to `addTransferListener`.
* Extend `TransferListener` with additional callback parameters.
* Error handling:
* Allow configuration of the Loader retry delay
([#3370](https://github.com/google/ExoPlayer/issues/3370)).

62
extensions/cronet/src/test/java/com/google/android/exoplayer2/ext/cronet/CronetDataSourceTest.java
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@ -213,7 +213,8 @@ public final class CronetDataSourceTest {
public void testRequestOpen() throws HttpDataSourceException {
mockResponseStartSuccess();
assertThat(dataSourceUnderTest.open(testDataSpec)).isEqualTo(TEST_CONTENT_LENGTH);
verify(mockTransferListener).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener)
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
@Test
@ -225,7 +226,8 @@ public final class CronetDataSourceTest {
mockResponseStartSuccess();
assertThat(dataSourceUnderTest.open(testDataSpec)).isEqualTo(5000 /* contentLength */);
verify(mockTransferListener).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener)
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
@Test
@ -239,7 +241,8 @@ public final class CronetDataSourceTest {
// Check for connection not automatically closed.
assertThat(e.getCause() instanceof UnknownHostException).isFalse();
verify(mockUrlRequest, never()).cancel();
verify(mockTransferListener, never()).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener, never())
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
}
@ -256,7 +259,8 @@ public final class CronetDataSourceTest {
// Check for connection not automatically closed.
assertThat(e.getCause() instanceof UnknownHostException).isTrue();
verify(mockUrlRequest, never()).cancel();
verify(mockTransferListener, never()).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener, never())
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
}
@ -272,7 +276,8 @@ public final class CronetDataSourceTest {
assertThat(e instanceof HttpDataSource.InvalidResponseCodeException).isTrue();
// Check for connection not automatically closed.
verify(mockUrlRequest, never()).cancel();
verify(mockTransferListener, never()).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener, never())
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
}
@ -298,7 +303,8 @@ public final class CronetDataSourceTest {
dataSourceUnderTest.setRequestProperty("Content-Type", TEST_CONTENT_TYPE);
assertThat(dataSourceUnderTest.open(testPostDataSpec)).isEqualTo(TEST_CONTENT_LENGTH);
verify(mockTransferListener).onTransferStart(dataSourceUnderTest, testPostDataSpec);
verify(mockTransferListener)
.onTransferStart(dataSourceUnderTest, testPostDataSpec, /* isNetwork= */ true);
}
@Test
@ -346,7 +352,8 @@ public final class CronetDataSourceTest {
// Should have only called read on cronet once.
verify(mockUrlRequest, times(1)).read(any(ByteBuffer.class));
verify(mockTransferListener, times(2)).onBytesTransferred(dataSourceUnderTest, 8);
verify(mockTransferListener, times(2))
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 8);
}
@Test
@ -386,7 +393,8 @@ public final class CronetDataSourceTest {
int bytesRead = dataSourceUnderTest.read(returnedBuffer, 8, 8);
assertThat(bytesRead).isEqualTo(8);
assertThat(returnedBuffer).isEqualTo(prefixZeros(buildTestDataArray(0, 8), 16));
verify(mockTransferListener).onBytesTransferred(dataSourceUnderTest, 8);
verify(mockTransferListener)
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 8);
}
@Test
@ -402,7 +410,8 @@ public final class CronetDataSourceTest {
int bytesRead = dataSourceUnderTest.read(returnedBuffer, 0, 16);
assertThat(bytesRead).isEqualTo(16);
assertThat(returnedBuffer).isEqualTo(buildTestDataArray(1000, 16));
verify(mockTransferListener).onBytesTransferred(dataSourceUnderTest, 16);
verify(mockTransferListener)
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 16);
}
@Test
@ -418,7 +427,8 @@ public final class CronetDataSourceTest {
int bytesRead = dataSourceUnderTest.read(returnedBuffer, 0, 16);
assertThat(bytesRead).isEqualTo(16);
assertThat(returnedBuffer).isEqualTo(buildTestDataArray(1000, 16));
verify(mockTransferListener).onBytesTransferred(dataSourceUnderTest, 16);
verify(mockTransferListener)
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 16);
}
@Test
@ -433,7 +443,8 @@ public final class CronetDataSourceTest {
int bytesRead = dataSourceUnderTest.read(returnedBuffer, 8, 8);
assertThat(returnedBuffer).isEqualTo(prefixZeros(buildTestDataArray(0, 8), 16));
assertThat(bytesRead).isEqualTo(8);
verify(mockTransferListener).onBytesTransferred(dataSourceUnderTest, 8);
verify(mockTransferListener)
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 8);
}
@Test
@ -447,7 +458,8 @@ public final class CronetDataSourceTest {
int bytesRead = dataSourceUnderTest.read(returnedBuffer, 0, 24);
assertThat(returnedBuffer).isEqualTo(suffixZeros(buildTestDataArray(0, 16), 24));
assertThat(bytesRead).isEqualTo(16);
verify(mockTransferListener).onBytesTransferred(dataSourceUnderTest, 16);
verify(mockTransferListener)
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 16);
}
@Test
@ -464,7 +476,8 @@ public final class CronetDataSourceTest {
assertThat(bytesRead).isEqualTo(8);
dataSourceUnderTest.close();
verify(mockTransferListener).onTransferEnd(dataSourceUnderTest);
verify(mockTransferListener)
.onTransferEnd(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
try {
bytesRead += dataSourceUnderTest.read(returnedBuffer, 0, 8);
@ -505,9 +518,12 @@ public final class CronetDataSourceTest {
// Should have only called read on cronet once.
verify(mockUrlRequest, times(1)).read(any(ByteBuffer.class));
verify(mockTransferListener, times(1)).onBytesTransferred(dataSourceUnderTest, 8);
verify(mockTransferListener, times(1)).onBytesTransferred(dataSourceUnderTest, 6);
verify(mockTransferListener, times(1)).onBytesTransferred(dataSourceUnderTest, 2);
verify(mockTransferListener, times(1))
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 8);
verify(mockTransferListener, times(1))
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 6);
verify(mockTransferListener, times(1))
.onBytesTransferred(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, 2);
// Now we already returned the 16 bytes initially asked.
// Try to read again even though all requested 16 bytes are already returned.
@ -518,7 +534,8 @@ public final class CronetDataSourceTest {
assertThat(returnedBuffer).isEqualTo(new byte[16]);
// C.RESULT_END_OF_INPUT should not be reported though the TransferListener.
verify(mockTransferListener, never())
.onBytesTransferred(dataSourceUnderTest, C.RESULT_END_OF_INPUT);
.onBytesTransferred(
dataSourceUnderTest, testDataSpec, /* isNetwork= */ true, C.RESULT_END_OF_INPUT);
// There should still be only one call to read on cronet.
verify(mockUrlRequest, times(1)).read(any(ByteBuffer.class));
// Check for connection not automatically closed.
@ -559,7 +576,8 @@ public final class CronetDataSourceTest {
ShadowSystemClock.setCurrentTimeMillis(startTimeMs + TEST_CONNECT_TIMEOUT_MS + 10);
timedOutLatch.await();
verify(mockTransferListener, never()).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener, never())
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
@Test
@ -597,7 +615,8 @@ public final class CronetDataSourceTest {
thread.interrupt();
timedOutLatch.await();
verify(mockTransferListener, never()).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener, never())
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
}
@Test
@ -678,7 +697,8 @@ public final class CronetDataSourceTest {
ShadowSystemClock.setCurrentTimeMillis(startTimeMs + newTimeoutMs + 10);
timedOutLatch.await();
verify(mockTransferListener, never()).onTransferStart(dataSourceUnderTest, testDataSpec);
verify(mockTransferListener, never())
.onTransferStart(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
assertThat(openExceptions.get()).isEqualTo(1);
}
@ -797,7 +817,7 @@ public final class CronetDataSourceTest {
// the subsequent open() call succeeds.
doThrow(new NullPointerException())
.when(mockTransferListener)
.onTransferEnd(dataSourceUnderTest);
.onTransferEnd(dataSourceUnderTest, testDataSpec, /* isNetwork= */ true);
dataSourceUnderTest.open(testDataSpec);
try {
dataSourceUnderTest.close();

22
library/core/src/main/java/com/google/android/exoplayer2/upstream/BaseDataSource.java
View File

@ -15,6 +15,8 @@
*/
package com.google.android.exoplayer2.upstream;
import android.support.annotation.Nullable;
import com.google.android.exoplayer2.util.Assertions;
import java.util.ArrayList;
/**
@ -29,6 +31,8 @@ public abstract class BaseDataSource implements DataSource {
private final boolean isNetwork;
private final ArrayList<TransferListener<? super DataSource>> listeners;
private @Nullable DataSpec dataSpec;
/**
* Creates base data source.
*
@ -50,7 +54,9 @@ public abstract class BaseDataSource implements DataSource {
* @param dataSpec {@link DataSpec} describing the data for initializing transfer.
*/
protected final void transferInitializing(DataSpec dataSpec) {
// TODO: notify listeners.
for (int i = 0; i < listeners.size(); i++) {
listeners.get(i).onTransferInitializing(/* source= */ this, dataSpec, isNetwork);
}
}
/**
@ -59,8 +65,9 @@ public abstract class BaseDataSource implements DataSource {
* @param dataSpec {@link DataSpec} describing the data being transferred.
*/
protected final void transferStarted(DataSpec dataSpec) {
this.dataSpec = dataSpec;
for (int i = 0; i < listeners.size(); i++) {
listeners.get(i).onTransferStart(/* source= */ this, dataSpec);
listeners.get(i).onTransferStart(/* source= */ this, dataSpec, isNetwork);
}
}
@ -71,15 +78,20 @@ public abstract class BaseDataSource implements DataSource {
* (or if the first call, since the transfer was started).
*/
protected final void bytesTransferred(int bytesTransferred) {
DataSpec dataSpec = Assertions.checkNotNull(this.dataSpec);
for (int i = 0; i < listeners.size(); i++) {
listeners.get(i).onBytesTransferred(/* source= */ this, bytesTransferred);
listeners
.get(i)
.onBytesTransferred(/* source= */ this, dataSpec, isNetwork, bytesTransferred);
}
}
/** Notifies listeners that a transfer ended. */
protected final void transferEnded() {
DataSpec dataSpec = Assertions.checkNotNull(this.dataSpec);
for (int i = 0; i < listeners.size(); i++) {
listeners.get(i).onTransferEnd(/* source= */ this);
}
listeners.get(i).onTransferEnd(/* source= */ this, dataSpec, isNetwork);
}
this.dataSpec = null;
}
}

25
library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java
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@ -22,8 +22,8 @@ import com.google.android.exoplayer2.util.Clock;
import com.google.android.exoplayer2.util.SlidingPercentile;
/**
* Estimates bandwidth by listening to data transfers. The bandwidth estimate is calculated using
* a {@link SlidingPercentile} and is updated each time a transfer ends.
* Estimates bandwidth by listening to data transfers. The bandwidth estimate is calculated using a
* {@link SlidingPercentile} and is updated each time a transfer ends.
*/
public final class DefaultBandwidthMeter implements BandwidthMeter, TransferListener<Object> {
@ -177,7 +177,15 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
}
@Override
public synchronized void onTransferStart(Object source, DataSpec dataSpec) {
public void onTransferInitializing(Object source, DataSpec dataSpec, boolean isNetwork) {
// Do nothing.
}
@Override
public synchronized void onTransferStart(Object source, DataSpec dataSpec, boolean isNetwork) {
if (!isNetwork) {
return;
}
if (streamCount == 0) {
sampleStartTimeMs = clock.elapsedRealtime();
}
@ -185,12 +193,19 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
}
@Override
public synchronized void onBytesTransferred(Object source, int bytes) {
public synchronized void onBytesTransferred(
Object source, DataSpec dataSpec, boolean isNetwork, int bytes) {
if (!isNetwork) {
return;
}
sampleBytesTransferred += bytes;
}
@Override
public synchronized void onTransferEnd(Object source) {
public synchronized void onTransferEnd(Object source, DataSpec dataSpec, boolean isNetwork) {
if (!isNetwork) {
return;
}
Assertions.checkState(streamCount > 0);
long nowMs = clock.elapsedRealtime();
int sampleElapsedTimeMs = (int) (nowMs - sampleStartTimeMs);

41
library/core/src/main/java/com/google/android/exoplayer2/upstream/TransferListener.java
View File

@ -17,31 +17,60 @@ package com.google.android.exoplayer2.upstream;
/**
* A listener of data transfer events.
*
* <p>A transfer usually progresses through multiple steps:
*
* <ol>
* <li>Initializing the underlying resource (e.g. opening a HTTP connection). {@link
* #onTransferInitializing(Object, DataSpec, boolean)} is called before the initialization
* starts.
* <li>Starting the transfer after successfully initializing the resource. {@link
* #onTransferStart(Object, DataSpec, boolean)} is called. Note that this only happens if the
* initialization was successful.
* <li>Transferring data. {@link #onBytesTransferred(Object, DataSpec, boolean, int)} is called
* frequently during the transfer to indicate progress.
* <li>Closing the transfer and the underlying resource. {@link #onTransferEnd(Object, DataSpec,
* boolean)} is called. Note that each {@link #onTransferStart(Object, DataSpec, boolean)}
* will have exactly one corresponding call to {@link #onTransferEnd(Object, DataSpec,
* boolean)}.
* </ol>
*/
public interface TransferListener<S> {
/**
* Called when a transfer is being initialized.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data for which the transfer is initialized.
* @param isNetwork Whether the data is transferred through a network.
*/
void onTransferInitializing(S source, DataSpec dataSpec, boolean isNetwork);
/**
* Called when a transfer starts.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data being transferred.
* @param isNetwork Whether the data is transferred through a network.
*/
void onTransferStart(S source, DataSpec dataSpec);
void onTransferStart(S source, DataSpec dataSpec, boolean isNetwork);
/**
* Called incrementally during a transfer.
*
* @param source The source performing the transfer.
* @param bytesTransferred The number of bytes transferred since the previous call to this
* method (or if the first call, since the transfer was started).
* @param dataSpec Describes the data being transferred.
* @param isNetwork Whether the data is transferred through a network.
* @param bytesTransferred The number of bytes transferred since the previous call to this method
*/
void onBytesTransferred(S source, int bytesTransferred);
void onBytesTransferred(S source, DataSpec dataSpec, boolean isNetwork, int bytesTransferred);
/**
* Called when a transfer ends.
*
* @param source The source performing the transfer.
* @param dataSpec Describes the data being transferred.
* @param isNetwork Whether the data is transferred through a network.
*/
void onTransferEnd(S source);
void onTransferEnd(S source, DataSpec dataSpec, boolean isNetwork);
}

57
library/core/src/test/java/com/google/android/exoplayer2/upstream/BaseDataSourceTest.java
View File

@ -40,10 +40,21 @@ public class BaseDataSourceTest {
testSource.read(/* buffer= */ null, /* offset= */ 0, /* readLength= */ 100);
testSource.close();
assertThat(transferListener.lastTransferInitializingSource).isSameAs(testSource);
assertThat(transferListener.lastTransferStartSource).isSameAs(testSource);
assertThat(transferListener.lastBytesTransferredSource).isSameAs(testSource);
assertThat(transferListener.lastTransferEndSource).isSameAs(testSource);
assertThat(transferListener.lastTransferInitializingDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastTransferStartDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastBytesTransferredDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastTransferEndDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastTransferInitializingIsNetwork).isEqualTo(false);
assertThat(transferListener.lastTransferStartIsNetwork).isEqualTo(false);
assertThat(transferListener.lastBytesTransferredIsNetwork).isEqualTo(false);
assertThat(transferListener.lastTransferEndIsNetwork).isEqualTo(false);
assertThat(transferListener.lastBytesTransferred).isEqualTo(100);
}
@ -58,10 +69,21 @@ public class BaseDataSourceTest {
testSource.read(/* buffer= */ null, /* offset= */ 0, /* readLength= */ 100);
testSource.close();
assertThat(transferListener.lastTransferInitializingSource).isSameAs(testSource);
assertThat(transferListener.lastTransferStartSource).isSameAs(testSource);
assertThat(transferListener.lastBytesTransferredSource).isSameAs(testSource);
assertThat(transferListener.lastTransferEndSource).isSameAs(testSource);
assertThat(transferListener.lastTransferInitializingDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastTransferStartDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastBytesTransferredDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastTransferEndDataSpec).isEqualTo(dataSpec);
assertThat(transferListener.lastTransferInitializingIsNetwork).isEqualTo(true);
assertThat(transferListener.lastTransferStartIsNetwork).isEqualTo(true);
assertThat(transferListener.lastBytesTransferredIsNetwork).isEqualTo(true);
assertThat(transferListener.lastTransferEndIsNetwork).isEqualTo(true);
assertThat(transferListener.lastBytesTransferred).isEqualTo(100);
}
@ -73,6 +95,7 @@ public class BaseDataSourceTest {
@Override
public long open(DataSpec dataSpec) throws IOException {
transferInitializing(dataSpec);
transferStarted(dataSpec);
return C.LENGTH_UNSET;
}
@ -96,27 +119,51 @@ public class BaseDataSourceTest {
private static final class TestTransferListener implements TransferListener<DataSource> {
public Object lastTransferInitializingSource;
public DataSpec lastTransferInitializingDataSpec;
public boolean lastTransferInitializingIsNetwork;
public Object lastTransferStartSource;
public DataSpec lastTransferStartDataSpec;
public boolean lastTransferStartIsNetwork;
public Object lastBytesTransferredSource;
public DataSpec lastBytesTransferredDataSpec;
public boolean lastBytesTransferredIsNetwork;
public int lastBytesTransferred;
public Object lastTransferEndSource;
public DataSpec lastTransferEndDataSpec;
public boolean lastTransferEndIsNetwork;
@Override
public void onTransferStart(DataSource source, DataSpec dataSpec) {
lastTransferStartSource = source;
lastTransferStartDataSpec = dataSpec;
public void onTransferInitializing(DataSource source, DataSpec dataSpec, boolean isNetwork) {
lastTransferInitializingSource = source;
lastTransferInitializingDataSpec = dataSpec;
lastTransferInitializingIsNetwork = isNetwork;
}
@Override
public void onBytesTransferred(DataSource source, int bytesTransferred) {
public void onTransferStart(DataSource source, DataSpec dataSpec, boolean isNetwork) {
lastTransferStartSource = source;
lastTransferStartDataSpec = dataSpec;
lastTransferStartIsNetwork = isNetwork;
}
@Override
public void onBytesTransferred(
DataSource source, DataSpec dataSpec, boolean isNetwork, int bytesTransferred) {
lastBytesTransferredSource = source;
lastBytesTransferredDataSpec = dataSpec;
lastBytesTransferredIsNetwork = isNetwork;
lastBytesTransferred = bytesTransferred;
}
@Override
public void onTransferEnd(DataSource source) {
public void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork) {
lastTransferEndSource = source;
lastTransferEndDataSpec = dataSpec;
lastTransferEndIsNetwork = isNetwork;
}
}
}