Examples with CountsOracle org.neo4j.kernel.impl.store.CountsOracle used on opensource projects

Example 1 with CountsOracle

use of org.neo4j.kernel.impl.store.CountsOracle in project neo4j by neo4j.

the class CountsTrackerTest method shouldStoreCounts.

@Test
public void shouldStoreCounts() throws Exception {
    // given
    CountsOracle oracle = someData();
    // when
    try (Lifespan life = new Lifespan()) {
        CountsTracker tracker = life.add(newTracker());
        oracle.update(tracker, 2);
        tracker.rotate(2);
    }
    // then
    try (Lifespan life = new Lifespan()) {
        oracle.verify(life.add(newTracker()));
    }
}

Example 2 with CountsOracle

use of org.neo4j.kernel.impl.store.CountsOracle in project neo4j by neo4j.

the class CountsTrackerTest method shouldBeAbleToWriteDataToCountsTracker.

@Test
@Resources.Life(STARTED)
public void shouldBeAbleToWriteDataToCountsTracker() throws Exception {
    // given
    CountsTracker tracker = resourceManager.managed(newTracker());
    long indexId = 0;
    CountsOracle oracle = new CountsOracle();
    {
        CountsOracle.Node a = oracle.node(1);
        CountsOracle.Node b = oracle.node(1);
        oracle.relationship(a, 1, b);
        oracle.indexSampling(indexId, 2, 2);
        oracle.indexUpdatesAndSize(indexId, 10, 2);
    }
    // when
    oracle.update(tracker, 2);
    // then
    oracle.verify(tracker);
    // when
    tracker.rotate(2);
    // then
    oracle.verify(tracker);
    // when
    try (CountsAccessor.IndexStatsUpdater updater = tracker.updateIndexCounts()) {
        updater.incrementIndexUpdates(indexId, 2);
    }
    // then
    oracle.indexUpdatesAndSize(indexId, 12, 2);
    oracle.verify(tracker);
    // when
    tracker.rotate(2);
    // then
    oracle.verify(tracker);
}

Example 3 with CountsOracle

use of org.neo4j.kernel.impl.store.CountsOracle in project neo4j by neo4j.

the class CountsTrackerTest method someData.

private CountsOracle someData() {
    CountsOracle oracle = new CountsOracle();
    CountsOracle.Node n0 = oracle.node(0, 1);
    CountsOracle.Node n1 = oracle.node(0, 3);
    CountsOracle.Node n2 = oracle.node(2, 3);
    CountsOracle.Node n3 = oracle.node(2);
    oracle.relationship(n0, 1, n2);
    oracle.relationship(n1, 1, n3);
    oracle.relationship(n1, 1, n2);
    oracle.relationship(n0, 1, n3);
    long indexId = 2;
    oracle.indexUpdatesAndSize(indexId, 0L, 50L);
    oracle.indexSampling(indexId, 25L, 50L);
    return oracle;
}

Example 4 with CountsOracle

use of org.neo4j.kernel.impl.store.CountsOracle in project neo4j by neo4j.

the class CountsTrackerTest method shouldBeAbleToReadUpToDateValueWhileAnotherThreadIsPerformingRotation.

@Test
public void shouldBeAbleToReadUpToDateValueWhileAnotherThreadIsPerformingRotation() throws Exception {
    // given
    CountsOracle oracle = someData();
    final int firstTransaction = 2, secondTransaction = 3;
    try (Lifespan life = new Lifespan()) {
        CountsTracker tracker = life.add(newTracker());
        oracle.update(tracker, firstTransaction);
        tracker.rotate(firstTransaction);
    }
    // when
    final CountsOracle delta = new CountsOracle();
    {
        CountsOracle.Node n1 = delta.node(1);
        // Label 4 has not been used before...
        CountsOracle.Node n2 = delta.node(1, 4);
        delta.relationship(n1, 1, n2);
        // relationshipType 2 has not been used before...
        delta.relationship(n2, 2, n1);
    }
    delta.update(oracle);
    try (Lifespan life = new Lifespan()) {
        final Barrier.Control barrier = new Barrier.Control();
        CountsTracker tracker = life.add(new CountsTracker(resourceManager.logProvider(), resourceManager.fileSystem(), resourceManager.pageCache(), Config.empty(), resourceManager.testPath()) {

            @Override
            protected boolean include(CountsKey countsKey, ReadableBuffer value) {
                barrier.reached();
                return super.include(countsKey, value);
            }
        });
        Future<Void> task = threading.execute((ThrowingFunction<CountsTracker, Void, RuntimeException>) t -> {
            try {
                delta.update(t, secondTransaction);
                t.rotate(secondTransaction);
            } catch (IOException e) {
                throw new AssertionError(e);
            }
            return null;
        }, tracker);
        // then
        barrier.await();
        oracle.verify(tracker);
        barrier.release();
        task.get();
        oracle.verify(tracker);
    }
}

Example 5 with CountsOracle

use of org.neo4j.kernel.impl.store.CountsOracle in project neo4j by neo4j.

the class CountsTrackerTest method shouldUpdateCountsOnExistingStore.

@Test
public void shouldUpdateCountsOnExistingStore() throws Exception {
    // given
    CountsOracle oracle = someData();
    int firstTx = 2, secondTx = 3;
    try (Lifespan life = new Lifespan()) {
        CountsTracker tracker = life.add(newTracker());
        oracle.update(tracker, firstTx);
        tracker.rotate(firstTx);
        oracle.verify(tracker);
        // when
        CountsOracle delta = new CountsOracle();
        {
            CountsOracle.Node n1 = delta.node(1);
            // Label 4 has not been used before...
            CountsOracle.Node n2 = delta.node(1, 4);
            delta.relationship(n1, 1, n2);
            // relationshipType 2 has not been used before...
            delta.relationship(n2, 2, n1);
        }
        delta.update(tracker, secondTx);
        delta.update(oracle);
        // then
        oracle.verify(tracker);
        // when
        tracker.rotate(secondTx);
    }
    // then
    try (Lifespan life = new Lifespan()) {
        oracle.verify(life.add(newTracker()));
    }
}