Examples with FakeSegmentOutputStream io.pravega.client.stream.impl.EventStreamWriterTest.FakeSegmentOutputStream used on opensource projects

Example 6 with FakeSegmentOutputStream

use of io.pravega.client.stream.impl.EventStreamWriterTest.FakeSegmentOutputStream in project pravega by pravega.

the class TransactionalEventStreamWriterTest method testTxn.

@Test
public void testTxn() throws TxnFailedException {
    String scope = "scope";
    String streamName = "stream";
    StreamImpl stream = new StreamImpl(scope, streamName);
    Segment segment = new Segment(scope, streamName, 0);
    UUID txid = UUID.randomUUID();
    EventWriterConfig config = EventWriterConfig.builder().build();
    SegmentOutputStreamFactory streamFactory = Mockito.mock(SegmentOutputStreamFactory.class);
    Controller controller = Mockito.mock(Controller.class);
    Mockito.when(controller.getCurrentSegments(scope, streamName)).thenReturn(getSegmentsFuture(segment));
    FakeSegmentOutputStream outputStream = new FakeSegmentOutputStream(segment);
    FakeSegmentOutputStream bad = new FakeSegmentOutputStream(segment);
    Mockito.when(controller.createTransaction(eq(stream), anyLong())).thenReturn(CompletableFuture.completedFuture(new TxnSegments(getSegments(segment), txid)));
    Mockito.when(streamFactory.createOutputStreamForTransaction(eq(segment), eq(txid), any(), any())).thenReturn(outputStream);
    Mockito.when(streamFactory.createOutputStreamForSegment(eq(segment), any(), any(), any())).thenReturn(bad);
    JavaSerializer<String> serializer = new JavaSerializer<>();
    @Cleanup TransactionalEventStreamWriter<String> writer = new TransactionalEventStreamWriterImpl<>(stream, "id", controller, streamFactory, serializer, config, executorService());
    Transaction<String> txn = writer.beginTxn();
    txn.writeEvent("Foo");
    assertTrue(bad.unacked.isEmpty());
    assertEquals(1, outputStream.unacked.size());
    outputStream.unacked.get(0).getAckFuture().complete(null);
    txn.flush();
    assertTrue(bad.unacked.isEmpty());
    assertTrue(outputStream.unacked.isEmpty());
}

Example 7 with FakeSegmentOutputStream

use of io.pravega.client.stream.impl.EventStreamWriterTest.FakeSegmentOutputStream in project pravega by pravega.

the class TransactionalEventStreamWriterTest method testTxnCommitFailureRetry.

@Test
public void testTxnCommitFailureRetry() throws TxnFailedException, SegmentSealedException {
    String scope = "scope";
    String streamName = "stream";
    StreamImpl stream = new StreamImpl(scope, streamName);
    Segment segment = new Segment(scope, streamName, 0);
    UUID txid = UUID.randomUUID();
    EventWriterConfig config = EventWriterConfig.builder().build();
    JavaSerializer<String> serializer = new JavaSerializer<>();
    // Setup mocks
    SegmentOutputStreamFactory streamFactory = Mockito.mock(SegmentOutputStreamFactory.class);
    Controller controller = Mockito.mock(Controller.class);
    Mockito.when(controller.getCurrentSegments(scope, streamName)).thenReturn(getSegmentsFuture(segment));
    FakeSegmentOutputStream outputStream = spy(new FakeSegmentOutputStream(segment));
    FakeSegmentOutputStream bad = new FakeSegmentOutputStream(segment);
    Mockito.when(controller.createTransaction(eq(stream), anyLong())).thenReturn(CompletableFuture.completedFuture(new TxnSegments(getSegments(segment), txid)));
    Mockito.when(controller.pingTransaction(eq(stream), eq(txid), anyLong())).thenReturn(CompletableFuture.completedFuture(Transaction.PingStatus.OPEN));
    Mockito.when(controller.checkTransactionStatus(eq(stream), eq(txid))).thenReturn(CompletableFuture.completedFuture(Transaction.Status.OPEN));
    Mockito.when(streamFactory.createOutputStreamForTransaction(eq(segment), eq(txid), any(), any())).thenReturn(outputStream);
    Mockito.when(streamFactory.createOutputStreamForSegment(eq(segment), any(), any(), any())).thenReturn(bad);
    // Simulate a Controller client throwing a Deadline Exceeded exception.
    CompletableFuture<Void> failedCommit = new CompletableFuture<>();
    failedCommit.completeExceptionally(new RetriesExhaustedException(new StatusRuntimeException(Status.DEADLINE_EXCEEDED)));
    Mockito.when(controller.commitTransaction(eq(stream), anyString(), isNull(), eq(txid))).thenReturn(// simulate a failure
    failedCommit).thenReturn(// a success.
    CompletableFuture.completedFuture(null));
    @Cleanup TransactionalEventStreamWriter<String> writer = new TransactionalEventStreamWriterImpl<>(stream, "id", controller, streamFactory, serializer, config, executorService());
    Transaction<String> txn = writer.beginTxn();
    txn.writeEvent("Foo");
    assertTrue(bad.unacked.isEmpty());
    assertEquals(1, outputStream.unacked.size());
    outputStream.unacked.get(0).getAckFuture().complete(null);
    // invoke commit of transaction.
    try {
        txn.commit();
    } catch (Exception e) {
        assertTrue(e instanceof RetriesExhaustedException && e.getCause() instanceof StatusRuntimeException);
        // the user retries the commit since the TxnFailedException is not thrown.
        txn.commit();
    }
    // verify if segments are flushed and closed.
    Mockito.verify(outputStream, Mockito.times(1)).close();
    Mockito.verify(controller, Mockito.times(2)).commitTransaction(eq(stream), anyString(), isNull(), eq(txid));
    assertTrue(bad.unacked.isEmpty());
    assertTrue(outputStream.unacked.isEmpty());
}