Examples with TransactionStartedEvent arez.spy.TransactionStartedEvent used on opensource projects

Example 6 with TransactionStartedEvent

use of arez.spy.TransactionStartedEvent in project arez by arez.

the class ArezContextTest method action_function_throwsException.

@Test
public void action_function_throwsException() throws Throwable {
    final ArezContext context = new ArezContext();
    assertFalse(context.isTransactionActive());
    assertThrowsWithMessage(context::getTransaction, "Arez-0117: Attempting to get current transaction but no transaction is active.");
    final String name = ValueUtil.randomString();
    final IOException ioException = new IOException();
    final String param1 = "";
    final Object param2 = null;
    final int param3 = 3;
    final TestSpyEventHandler handler = new TestSpyEventHandler();
    context.getSpy().addSpyEventHandler(handler);
    final boolean mutation = false;
    assertThrows(IOException.class, () -> context.action(name, mutation, () -> {
        throw ioException;
    }, param1, param2, param3));
    assertFalse(context.isTransactionActive());
    handler.assertEventCount(4);
    {
        final ActionStartedEvent e = handler.assertEvent(ActionStartedEvent.class, 0);
        assertEquals(e.getName(), name);
        assertEquals(e.isTracked(), false);
        final Object[] parameters = e.getParameters();
        assertEquals(parameters.length, 3);
        assertEquals(parameters[0], param1);
        assertEquals(parameters[1], param2);
        assertEquals(parameters[2], param3);
    }
    {
        final TransactionStartedEvent e = handler.assertEvent(TransactionStartedEvent.class, 1);
        assertEquals(e.getName(), name);
        assertEquals(e.isMutation(), mutation);
        assertEquals(e.getTracker(), null);
    }
    {
        final TransactionCompletedEvent e = handler.assertEvent(TransactionCompletedEvent.class, 2);
        assertEquals(e.getName(), name);
        assertEquals(e.isMutation(), mutation);
        assertEquals(e.getTracker(), null);
    }
    {
        final ActionCompletedEvent e = handler.assertEvent(ActionCompletedEvent.class, 3);
        assertEquals(e.getName(), name);
        assertEquals(e.getThrowable(), ioException);
        assertEquals(e.returnsResult(), true);
        assertEquals(e.getResult(), null);
        assertEquals(e.isTracked(), false);
        final Object[] parameters = e.getParameters();
        assertEquals(parameters.length, 3);
        assertEquals(parameters[0], param1);
        assertEquals(parameters[1], param2);
        assertEquals(parameters[2], param3);
    }
}

Example 7 with TransactionStartedEvent

use of arez.spy.TransactionStartedEvent in project arez by arez.

the class TransactionTest method beginTransaction_generates_spyEvent.

@Test
public void beginTransaction_generates_spyEvent() throws Exception {
    final ArezContext context = Arez.context();
    final TestSpyEventHandler handler = new TestSpyEventHandler();
    context.getSpy().addSpyEventHandler(handler);
    final String name = ValueUtil.randomString();
    Transaction.begin(context, name, TransactionMode.READ_ONLY, null);
    handler.assertEventCount(1);
    final TransactionStartedEvent event = handler.assertEvent(TransactionStartedEvent.class, 0);
    assertEquals(event.getName(), name);
    assertEquals(event.isMutation(), false);
    assertEquals(event.getTracker(), null);
}

Example 8 with TransactionStartedEvent

use of arez.spy.TransactionStartedEvent in project arez by arez.

the class SpyEventProcessorTest method increaseNesting.

@Test
public void increaseNesting() throws Throwable {
    final TestSpyEventProcessor processor = new TestSpyEventProcessor();
    final TransactionStartedEvent event = new TransactionStartedEvent(ValueUtil.randomString(), ValueUtil.randomBoolean(), null);
    final AtomicInteger handleCallCount = new AtomicInteger();
    final BiConsumer<SpyUtil.NestingDelta, TransactionStartedEvent> handler = (delta, e) -> {
        handleCallCount.incrementAndGet();
        assertEquals(delta, SpyUtil.NestingDelta.INCREASE);
        assertEquals(e, event);
    };
    processor.on(TransactionStartedEvent.class, handler);
    assertEquals(processor.getNestingDelta(event), SpyUtil.NestingDelta.INCREASE);
    assertEquals(handleCallCount.get(), 0);
    assertEquals(processor.getNestingLevel(), 0);
    assertEquals(processor._handleUnhandledEventCallCount, 0);
    processor.onSpyEvent(event);
    assertEquals(handleCallCount.get(), 1);
    assertEquals(processor.getNestingLevel(), 1);
    assertEquals(processor._handleUnhandledEventCallCount, 0);
}

Example 9 with TransactionStartedEvent

use of arez.spy.TransactionStartedEvent in project arez by arez.

the class Transaction method begin.

/**
 * Create a new transaction.
 *
 * @param context the associated context.
 * @param name    the name of the transaction. Should be non-null if {@link Arez#areNamesEnabled()} is true, false otherwise.
 * @param mode    the transaction mode.
 * @param tracker the observer that is tracking transaction if any.
 * @return the new transaction.
 */
static Transaction begin(@Nonnull final ArezContext context, @Nullable final String name, @Nullable final TransactionMode mode, @Nullable final Observer tracker) {
    if (Arez.shouldCheckApiInvariants()) {
        if (Arez.shouldEnforceTransactionType() && null != c_transaction) {
            apiInvariant(() -> TransactionMode.READ_WRITE != mode || TransactionMode.READ_WRITE == c_transaction.getMode(), () -> "Arez-0119: Attempting to create READ_WRITE transaction named '" + name + "' but it is " + "nested in transaction named '" + c_transaction.getName() + "' with mode " + c_transaction.getMode().name() + " which is not equal to READ_WRITE.");
            apiInvariant(() -> TransactionMode.DISPOSE != c_transaction.getMode() || TransactionMode.DISPOSE == mode, () -> "Arez-0175: Attempting to create transaction named '" + name + "' but it is " + "nested inside a DISPOSE transaction named '" + c_transaction.getName() + "'.");
        }
    }
    if (Arez.shouldCheckInvariants()) {
        if (!Arez.areZonesEnabled() && null != c_transaction) {
            invariant(() -> c_transaction.getContext() == context, () -> "Arez-0120: Zones are not enabled but the transaction named '" + name + "' is " + "nested in a transaction named '" + c_transaction.getName() + "' from a " + "different context.");
        }
        invariant(() -> !c_suspended, () -> "Arez-0121: Attempted to create transaction named '" + name + "' while " + "nested in a suspended transaction named '" + c_transaction.getName() + "'.");
    }
    c_transaction = new Transaction(context, c_transaction, name, mode, tracker);
    context.disableScheduler();
    c_transaction.begin();
    if (context.willPropagateSpyEvents()) {
        assert null != name;
        final ObserverInfoImpl trackerInfo = null != tracker ? new ObserverInfoImpl(c_transaction.getContext().getSpy(), tracker) : null;
        final boolean mutation = !Arez.shouldEnforceTransactionType() || TransactionMode.READ_WRITE == c_transaction.getMode();
        context.getSpy().reportSpyEvent(new TransactionStartedEvent(name, mutation, trackerInfo));
    }
    return c_transaction;
}