Examples with IgniteSemaphore org.apache.ignite.IgniteSemaphore used on opensource projects

Example 21 with IgniteSemaphore

use of org.apache.ignite.IgniteSemaphore in project ignite by apache.

the class IgniteSemaphoreAbstractSelfTest method removeSemaphore.

/**
 * @param semaphoreName Semaphore name.
 * @throws Exception If failed.
 */
private void removeSemaphore(final String semaphoreName) throws Exception {
    IgniteSemaphore semaphore = grid(RND.nextInt(NODES_CNT)).semaphore(semaphoreName, 10, false, true);
    assert semaphore != null;
    if (semaphore.availablePermits() < 0)
        semaphore.release(-semaphore.availablePermits());
    // Remove semaphore on random node.
    IgniteSemaphore semaphore0 = grid(RND.nextInt(NODES_CNT)).semaphore(semaphoreName, 0, false, true);
    assertNotNull(semaphore0);
    semaphore0.close();
    // Ensure semaphore is removed on all nodes.
    assert GridTestUtils.waitForCondition(new GridAbsPredicateX() {

        @Override
        public boolean applyx() throws IgniteCheckedException {
            for (Ignite g : G.allGrids()) {
                if (((IgniteKernal) g).context().dataStructures().semaphore(semaphoreName, null, 10, true, false) != null)
                    return false;
            }
            return true;
        }
    }, 5_000);
    checkRemovedSemaphore(semaphore);
}

Example 22 with IgniteSemaphore

use of org.apache.ignite.IgniteSemaphore in project ignite by apache.

the class IgniteSemaphoreAbstractSelfTest method testIsolation.

/**
 * Implementation of ignite data structures internally uses special system caches, need make sure
 * that transaction on these system caches do not intersect with transactions started by user.
 *
 * @throws Exception If failed.
 */
public void testIsolation() throws Exception {
    Ignite ignite = grid(0);
    CacheConfiguration cfg = new CacheConfiguration(DEFAULT_CACHE_NAME);
    cfg.setName("myCache");
    cfg.setAtomicityMode(TRANSACTIONAL);
    cfg.setWriteSynchronizationMode(FULL_SYNC);
    IgniteCache<Integer, Integer> cache = ignite.getOrCreateCache(cfg);
    try {
        IgniteSemaphore semaphore = ignite.semaphore("testIsolation", 1, true, true);
        assertNotNull(semaphore);
        try (Transaction tx = ignite.transactions().txStart()) {
            cache.put(1, 1);
            assertEquals(1, semaphore.availablePermits());
            semaphore.acquire();
            tx.rollback();
        }
        assertEquals(0, cache.size());
        assertEquals(0, semaphore.availablePermits());
        semaphore.close();
        assertTrue(semaphore.removed());
    } finally {
        ignite.destroyCache(cfg.getName());
    }
}