Examples with DynamicDatasetCache co.cask.cdap.data2.dataset2.DynamicDatasetCache used on opensource projects

Example 1 with DynamicDatasetCache

use of co.cask.cdap.data2.dataset2.DynamicDatasetCache in project cdap by caskdata.

the class MultiConsumerTest method testMulti.

@Test
public void testMulti() throws Exception {
    // TODO: Fix this test case to really test with numGroups settings.
    final ApplicationWithPrograms app = AppFabricTestHelper.deployApplicationWithManager(MultiApp.class, TEMP_FOLDER_SUPPLIER);
    List<ProgramController> controllers = Lists.newArrayList();
    for (ProgramDescriptor programDescriptor : app.getPrograms()) {
        controllers.add(AppFabricTestHelper.submit(app, programDescriptor.getSpecification().getClassName(), new BasicArguments(), TEMP_FOLDER_SUPPLIER));
    }
    DatasetFramework datasetFramework = AppFabricTestHelper.getInjector().getInstance(DatasetFramework.class);
    DynamicDatasetCache datasetCache = new SingleThreadDatasetCache(new SystemDatasetInstantiator(datasetFramework, getClass().getClassLoader(), null), AppFabricTestHelper.getInjector().getInstance(TransactionSystemClient.class), NamespaceId.DEFAULT, DatasetDefinition.NO_ARGUMENTS, null, null);
    final KeyValueTable accumulated = datasetCache.getDataset("accumulated");
    TransactionExecutorFactory txExecutorFactory = AppFabricTestHelper.getInjector().getInstance(TransactionExecutorFactory.class);
    // Try to get accumulated result and verify it. Expect result appear in max of 60 seconds.
    int trial = 0;
    while (trial < 60) {
        try {
            Transactions.createTransactionExecutor(txExecutorFactory, accumulated).execute(new TransactionExecutor.Subroutine() {

                @Override
                public void apply() throws Exception {
                    byte[] value = accumulated.read(MultiApp.KEY);
                    // Sum(1..100) * 3
                    Assert.assertEquals(((1 + 99) * 99 / 2) * 3, Longs.fromByteArray(value));
                }
            });
            break;
        } catch (TransactionFailureException e) {
            // No-op
            trial++;
            TimeUnit.SECONDS.sleep(1);
        }
    }
    Assert.assertTrue(trial < 60);
    for (ProgramController controller : controllers) {
        controller.stop().get();
    }
}