Examples with ADDED com.hazelcast.journal.EventJournalEventAdapter.EventType.ADDED used on opensource projects

Example 1 with ADDED

use of com.hazelcast.journal.EventJournalEventAdapter.EventType.ADDED in project hazelcast by hazelcast.

the class AbstractEventJournalBasicTest method allowReadingWithFutureSeq.

@Test
public void allowReadingWithFutureSeq() throws Exception {
    final EventJournalTestContext<String, Integer, EJ_TYPE> context = createContext();
    final EventJournalInitialSubscriberState state = subscribeToEventJournal(context.dataAdapter, partitionId);
    assertEquals(0, state.getOldestSequence());
    assertEquals(-1, state.getNewestSequence());
    assertEventJournalSize(context.dataAdapter, 0);
    final Integer value = RANDOM.nextInt();
    final CountDownLatch latch = new CountDownLatch(1);
    final int startSequence = 1;
    final BiConsumer<ReadResultSet<EJ_TYPE>, Throwable> callback = (response, t) -> {
        if (t == null) {
            latch.countDown();
            assertEquals(1, response.size());
            final EventJournalEventAdapter<String, Integer, EJ_TYPE> journalAdapter = context.eventJournalAdapter;
            final EJ_TYPE e = response.get(0);
            assertEquals(ADDED, journalAdapter.getType(e));
            assertEquals(value, journalAdapter.getNewValue(e));
        } else {
            rethrow(t);
        }
    };
    CompletionStage<ReadResultSet<EJ_TYPE>> callbackStage = readFromEventJournal(context.dataAdapter, startSequence, 1, partitionId, TRUE_PREDICATE, IDENTITY_FUNCTION).whenCompleteAsync(callback);
    assertTrueEventually(() -> {
        context.dataAdapter.put(randomPartitionKey(), value);
        assertTrue(latch.await(200, TimeUnit.MILLISECONDS));
    }, 30);
    // ensure no exception thrown from callback
    callbackStage.toCompletableFuture().join();
}