Examples with CommitEvent io.pravega.shared.controller.event.CommitEvent used on opensource projects

Example 1 with CommitEvent

use of io.pravega.shared.controller.event.CommitEvent in project pravega by pravega.

the class CommitEventProcessor method process.

@Override
protected void process(CommitEvent event, Position position) {
    String scope = event.getScope();
    String stream = event.getStream();
    int epoch = event.getEpoch();
    UUID txnId = event.getTxid();
    OperationContext context = streamMetadataStore.createContext(scope, stream);
    log.debug("Committing transaction {} on stream {}/{}", event.getTxid(), event.getScope(), event.getStream());
    streamMetadataStore.getActiveEpoch(scope, stream, context, false, executor).thenComposeAsync(pair -> {
        // complete before transitioning the stream to new epoch.
        if (epoch < pair.getKey()) {
            return CompletableFuture.completedFuture(null);
        } else if (epoch == pair.getKey()) {
            // If the transaction's epoch is same as the stream's current epoch, commit it.
            return completeCommit(scope, stream, epoch, txnId, context, this.streamMetadataTasks.retrieveDelegationToken());
        } else {
            // Otherwise, postpone commit operation until the stream transitions to next epoch.
            return postponeCommitEvent(event);
        }
    }).whenCompleteAsync((result, error) -> {
        if (error != null) {
            log.error("Failed committing transaction {} on stream {}/{}", txnId, scope, stream);
        } else {
            log.debug("Successfully committed transaction {} on stream {}/{}", txnId, scope, stream);
            if (processedEvents != null) {
                processedEvents.offer(event);
            }
        }
    }, executor).join();
}

Example 2 with CommitEvent

use of io.pravega.shared.controller.event.CommitEvent in project pravega by pravega.

the class StreamTransactionMetadataTasksTest method failOverTests.

@Test
public void failOverTests() throws CheckpointStoreException, InterruptedException {
    // Create mock writer objects.
    EventStreamWriterMock<CommitEvent> commitWriter = new EventStreamWriterMock<>();
    EventStreamWriterMock<AbortEvent> abortWriter = new EventStreamWriterMock<>();
    EventStreamReader<CommitEvent> commitReader = commitWriter.getReader();
    EventStreamReader<AbortEvent> abortReader = abortWriter.getReader();
    consumer = new ControllerService(streamStore, hostStore, streamMetadataTasks, txnTasks, segmentHelperMock, executor, null);
    // Create test scope and stream.
    final ScalingPolicy policy1 = ScalingPolicy.fixed(2);
    final StreamConfiguration configuration1 = StreamConfiguration.builder().scope(SCOPE).streamName(STREAM).scalingPolicy(policy1).build();
    Assert.assertEquals(Controller.CreateScopeStatus.Status.SUCCESS, consumer.createScope(SCOPE).join().getStatus());
    Assert.assertEquals(Controller.CreateStreamStatus.Status.SUCCESS, streamMetadataTasks.createStream(SCOPE, STREAM, configuration1, System.currentTimeMillis()).join());
    // Set up txn task for creating transactions from a failedHost.
    StreamTransactionMetadataTasks failedTxnTasks = new StreamTransactionMetadataTasks(streamStore, hostStore, segmentHelperMock, executor, "failedHost", connectionFactory, false, "");
    failedTxnTasks.initializeStreamWriters("commitStream", new EventStreamWriterMock<>(), "abortStream", new EventStreamWriterMock<>());
    // Create 3 transactions from failedHost.
    VersionedTransactionData tx1 = failedTxnTasks.createTxn(SCOPE, STREAM, 10000, 10000, null).join().getKey();
    VersionedTransactionData tx2 = failedTxnTasks.createTxn(SCOPE, STREAM, 10000, 10000, null).join().getKey();
    VersionedTransactionData tx3 = failedTxnTasks.createTxn(SCOPE, STREAM, 10000, 10000, null).join().getKey();
    // Ping another txn from failedHost.
    UUID txnId = UUID.randomUUID();
    streamStore.createTransaction(SCOPE, STREAM, txnId, 10000, 30000, 30000, null, executor).join();
    PingTxnStatus pingStatus = failedTxnTasks.pingTxn(SCOPE, STREAM, txnId, 10000, null).join();
    VersionedTransactionData tx4 = streamStore.getTransactionData(SCOPE, STREAM, txnId, null, executor).join();
    // Validate versions of all txn
    Assert.assertEquals(0, tx1.getVersion());
    Assert.assertEquals(0, tx2.getVersion());
    Assert.assertEquals(0, tx3.getVersion());
    Assert.assertEquals(1, tx4.getVersion());
    Assert.assertEquals(PingTxnStatus.Status.OK, pingStatus.getStatus());
    // Validate the txn index.
    Assert.assertEquals(1, streamStore.listHostsOwningTxn().join().size());
    // Change state of one txn to COMMITTING.
    TxnStatus txnStatus2 = streamStore.sealTransaction(SCOPE, STREAM, tx2.getId(), true, Optional.empty(), null, executor).thenApply(AbstractMap.SimpleEntry::getKey).join();
    Assert.assertEquals(TxnStatus.COMMITTING, txnStatus2);
    // Change state of another txn to ABORTING.
    TxnStatus txnStatus3 = streamStore.sealTransaction(SCOPE, STREAM, tx3.getId(), false, Optional.empty(), null, executor).thenApply(AbstractMap.SimpleEntry::getKey).join();
    Assert.assertEquals(TxnStatus.ABORTING, txnStatus3);
    // Create transaction tasks for sweeping txns from failedHost.
    txnTasks = new StreamTransactionMetadataTasks(streamStore, hostStore, segmentHelperMock, executor, "host", connectionFactory, false, "");
    TxnSweeper txnSweeper = new TxnSweeper(streamStore, txnTasks, 100, executor);
    // Before initializing, txnSweeper.sweepFailedHosts would throw an error
    AssertExtensions.assertThrows("IllegalStateException before initialization", txnSweeper.sweepFailedProcesses(() -> Collections.singleton("host")), ex -> ex instanceof IllegalStateException);
    // Initialize stream writers.
    txnTasks.initializeStreamWriters("commitStream", commitWriter, "abortStream", abortWriter);
    // Validate that txnTasks is ready.
    assertTrue(txnTasks.isReady());
    // Sweep txns that were being managed by failedHost.
    txnSweeper.sweepFailedProcesses(() -> Collections.singleton("host")).join();
    // Validate that sweeping completes correctly.
    Assert.assertEquals(0, streamStore.listHostsOwningTxn().join().size());
    Assert.assertEquals(TxnStatus.ABORTING, streamStore.transactionStatus(SCOPE, STREAM, tx1.getId(), null, executor).join());
    Assert.assertEquals(TxnStatus.COMMITTING, streamStore.transactionStatus(SCOPE, STREAM, tx2.getId(), null, executor).join());
    Assert.assertEquals(TxnStatus.ABORTING, streamStore.transactionStatus(SCOPE, STREAM, tx3.getId(), null, executor).join());
    Assert.assertEquals(TxnStatus.ABORTING, streamStore.transactionStatus(SCOPE, STREAM, tx4.getId(), null, executor).join());
    // Create commit and abort event processors.
    ConnectionFactory connectionFactory = Mockito.mock(ConnectionFactory.class);
    BlockingQueue<CommitEvent> processedCommitEvents = new LinkedBlockingQueue<>();
    BlockingQueue<AbortEvent> processedAbortEvents = new LinkedBlockingQueue<>();
    createEventProcessor("commitRG", "commitStream", commitReader, commitWriter, () -> new CommitEventProcessor(streamStore, streamMetadataTasks, hostStore, executor, segmentHelperMock, connectionFactory, processedCommitEvents));
    createEventProcessor("abortRG", "abortStream", abortReader, abortWriter, () -> new ConcurrentEventProcessor<>(new AbortRequestHandler(streamStore, streamMetadataTasks, hostStore, executor, segmentHelperMock, connectionFactory, processedAbortEvents), executor));
    // Wait until the commit event is processed and ensure that the txn state is COMMITTED.
    CommitEvent commitEvent = processedCommitEvents.take();
    assertEquals(tx2.getId(), commitEvent.getTxid());
    assertEquals(TxnStatus.COMMITTED, streamStore.transactionStatus(SCOPE, STREAM, tx2.getId(), null, executor).join());
    // Wait until 3 abort events are processed and ensure that the txn state is ABORTED.
    Predicate<AbortEvent> predicate = event -> event.getTxid().equals(tx1.getId()) || event.getTxid().equals(tx3.getId()) || event.getTxid().equals(tx4.getId());
    AbortEvent abortEvent1 = processedAbortEvents.take();
    assertTrue(predicate.test(abortEvent1));
    AbortEvent abortEvent2 = processedAbortEvents.take();
    assertTrue(predicate.test(abortEvent2));
    AbortEvent abortEvent3 = processedAbortEvents.take();
    assertTrue(predicate.test(abortEvent3));
    assertEquals(TxnStatus.ABORTED, streamStore.transactionStatus(SCOPE, STREAM, tx1.getId(), null, executor).join());
    assertEquals(TxnStatus.ABORTED, streamStore.transactionStatus(SCOPE, STREAM, tx3.getId(), null, executor).join());
    assertEquals(TxnStatus.ABORTED, streamStore.transactionStatus(SCOPE, STREAM, tx4.getId(), null, executor).join());
}

Example 3 with CommitEvent

use of io.pravega.shared.controller.event.CommitEvent in project pravega by pravega.

the class ControllerEventProcessorsTest method testEventKey.

@Test(timeout = 10000)
public void testEventKey() {
    UUID txid = UUID.randomUUID();
    String scope = "test";
    String stream = "test";
    AbortEvent abortEvent = new AbortEvent(scope, stream, 0, txid);
    CommitEvent commitEvent = new CommitEvent(scope, stream, 0, txid);
    assertEquals(abortEvent.getKey(), "test/test");
    assertEquals(commitEvent.getKey(), "test/test");
}

Example 4 with CommitEvent

use of io.pravega.shared.controller.event.CommitEvent in project pravega by pravega.

the class StreamTransactionMetadataTasksTest method commitAbortTests.

@Test(timeout = 5000)
@SuppressWarnings("unchecked")
public void commitAbortTests() {
    // Create mock writer objects.
    final List<CompletableFuture<Void>> commitWriterResponses = getWriteResultSequence(5);
    final List<CompletableFuture<Void>> abortWriterResponses = getWriteResultSequence(5);
    EventStreamWriter<CommitEvent> commitWriter = Mockito.mock(EventStreamWriter.class);
    Mockito.when(commitWriter.writeEvent(anyString(), any())).thenAnswer(new SequenceAnswer<>(commitWriterResponses));
    EventStreamWriter<AbortEvent> abortWriter = Mockito.mock(EventStreamWriter.class);
    Mockito.when(abortWriter.writeEvent(anyString(), any())).thenAnswer(new SequenceAnswer<>(abortWriterResponses));
    // Create transaction tasks.
    txnTasks = new StreamTransactionMetadataTasks(streamStore, hostStore, segmentHelperMock, executor, "host", connectionFactory, false, "");
    txnTasks.initializeStreamWriters("commitStream", commitWriter, "abortStream", abortWriter);
    // Create ControllerService.
    consumer = new ControllerService(streamStore, hostStore, streamMetadataTasks, txnTasks, segmentHelperMock, executor, null);
    final ScalingPolicy policy1 = ScalingPolicy.fixed(2);
    final StreamConfiguration configuration1 = StreamConfiguration.builder().scope(SCOPE).streamName(STREAM).scalingPolicy(policy1).build();
    // Create stream and scope
    Assert.assertEquals(Controller.CreateScopeStatus.Status.SUCCESS, consumer.createScope(SCOPE).join().getStatus());
    Assert.assertEquals(Controller.CreateStreamStatus.Status.SUCCESS, streamMetadataTasks.createStream(SCOPE, STREAM, configuration1, 0).join());
    // Create 2 transactions
    final long lease = 5000;
    final long scaleGracePeriod = 10000;
    VersionedTransactionData txData1 = txnTasks.createTxn(SCOPE, STREAM, lease, scaleGracePeriod, null).join().getKey();
    VersionedTransactionData txData2 = txnTasks.createTxn(SCOPE, STREAM, lease, scaleGracePeriod, null).join().getKey();
    // Commit the first one
    TxnStatus status = txnTasks.commitTxn(SCOPE, STREAM, txData1.getId(), null).join();
    Assert.assertEquals(TxnStatus.COMMITTING, status);
    // Abort the second one
    status = txnTasks.abortTxn(SCOPE, STREAM, txData2.getId(), txData2.getVersion(), null).join();
    Assert.assertEquals(TxnStatus.ABORTING, status);
}

Example 5 with CommitEvent

use of io.pravega.shared.controller.event.CommitEvent in project pravega by pravega.

the class StreamTransactionMetadataTasksTest method partialTxnCreationTest.

@Test(timeout = 10000)
public void partialTxnCreationTest() {
    // Create mock writer objects.
    EventStreamWriterMock<CommitEvent> commitWriter = new EventStreamWriterMock<>();
    EventStreamWriterMock<AbortEvent> abortWriter = new EventStreamWriterMock<>();
    // Create transaction tasks.
    txnTasks = new StreamTransactionMetadataTasks(streamStore, hostStore, SegmentHelperMock.getFailingSegmentHelperMock(), executor, "host", connectionFactory, this.authEnabled, "secret");
    txnTasks.initializeStreamWriters("commitStream", commitWriter, "abortStream", abortWriter);
    // Create ControllerService.
    consumer = new ControllerService(streamStore, hostStore, streamMetadataTasks, txnTasks, segmentHelperMock, executor, null);
    final ScalingPolicy policy1 = ScalingPolicy.fixed(2);
    final StreamConfiguration configuration1 = StreamConfiguration.builder().scope(SCOPE).streamName(STREAM).scalingPolicy(policy1).build();
    // Create stream and scope
    Assert.assertEquals(Controller.CreateScopeStatus.Status.SUCCESS, consumer.createScope(SCOPE).join().getStatus());
    Assert.assertEquals(Controller.CreateStreamStatus.Status.SUCCESS, streamMetadataTasks.createStream(SCOPE, STREAM, configuration1, 0).join());
    // Create partial transaction
    final long lease = 10000;
    final long scaleGracePeriod = 10000;
    AssertExtensions.assertThrows("Transaction creation fails, although a new txn id gets added to the store", txnTasks.createTxn(SCOPE, STREAM, lease, scaleGracePeriod, null), e -> e instanceof RuntimeException);
    // Ensure that exactly one transaction is active on the stream.
    Set<UUID> txns = streamStore.getActiveTxns(SCOPE, STREAM, null, executor).join().keySet();
    assertEquals(1, txns.size());
    // Ensure that transaction state is OPEN.
    UUID txn1 = txns.stream().findFirst().get();
    assertEquals(TxnStatus.OPEN, streamStore.transactionStatus(SCOPE, STREAM, txn1, null, executor).join());
    // Ensure that timeout service knows about the transaction.
    assertTrue(txnTasks.getTimeoutService().containsTxn(SCOPE, STREAM, txn1));
}