Examples with DefaultTransactionExecutor org.apache.tephra.DefaultTransactionExecutor used on opensource projects

Example 6 with DefaultTransactionExecutor

use of org.apache.tephra.DefaultTransactionExecutor in project cdap by caskdata.

the class AbstractDatasetFrameworkTest method testCompositeDataset.

private void testCompositeDataset(DatasetFramework framework) throws Exception {
    // Doing some admin and data ops
    DatasetAdmin admin = framework.getAdmin(MY_TABLE, null);
    Assert.assertNotNull(admin);
    final KeyValueTable table = framework.getDataset(MY_TABLE, DatasetDefinition.NO_ARGUMENTS, null);
    Assert.assertNotNull(table);
    TransactionExecutor txnl = new DefaultTransactionExecutor(new MinimalTxSystemClient(), (TransactionAware) table);
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            table.put("key1", "value1");
        }
    });
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertEquals("value1", table.get("key1"));
        }
    });
    admin.truncate();
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertEquals(null, table.get("key1"));
        }
    });
}

Example 7 with DefaultTransactionExecutor

use of org.apache.tephra.DefaultTransactionExecutor in project cdap by caskdata.

the class AbstractDatasetFrameworkTest method testSimpleDataset.

@Test
public void testSimpleDataset() throws Exception {
    // Configuring Dataset types
    DatasetFramework framework = getFramework();
    // system namespace has a module orderedTable-inMemory
    Assert.assertTrue(framework.hasSystemType("table"));
    // myspace namespace has no modules
    Assert.assertFalse(framework.hasType(IN_MEMORY_TYPE));
    Assert.assertFalse(framework.hasType(SIMPLE_KV_TYPE));
    // add module to namespace 'myspace'
    framework.addModule(KEY_VALUE, new SingleTypeModule(SimpleKVTable.class));
    // make sure it got added to 'myspace'
    Assert.assertTrue(framework.hasType(SIMPLE_KV_TYPE));
    // but not to 'system'
    Assert.assertFalse(framework.hasSystemType(SimpleKVTable.class.getName()));
    Assert.assertFalse(framework.hasInstance(MY_TABLE));
    // Creating instance using a type from own namespace
    framework.addInstance(SimpleKVTable.class.getName(), MY_TABLE, DatasetProperties.EMPTY);
    // verify it got added to the right namespace
    Assert.assertTrue(framework.hasInstance(MY_TABLE));
    // and not to the system namespace
    Assert.assertFalse(framework.hasInstance(NamespaceId.SYSTEM.dataset("my_table")));
    // Doing some admin and data ops
    DatasetAdmin admin = framework.getAdmin(MY_TABLE, null);
    Assert.assertNotNull(admin);
    final SimpleKVTable kvTable = framework.getDataset(MY_TABLE, DatasetDefinition.NO_ARGUMENTS, null);
    Assert.assertNotNull(kvTable);
    TransactionExecutor txnl = new DefaultTransactionExecutor(new MinimalTxSystemClient(), (TransactionAware) kvTable);
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            kvTable.put("key1", "value1");
        }
    });
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertEquals("value1", kvTable.get("key1"));
        }
    });
    admin.truncate();
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertTrue(kvTable.get("key1") == null);
        }
    });
    // cleanup
    framework.deleteInstance(MY_TABLE);
    framework.deleteModule(KEY_VALUE);
    // recreate instance without adding a module in 'myspace'. This should use types from default namespace
    framework.addInstance("table", MY_TABLE, DatasetProperties.EMPTY);
    // verify it got added to the right namespace
    Assert.assertTrue(framework.hasInstance(MY_TABLE));
    admin = framework.getAdmin(MY_TABLE, null);
    Assert.assertNotNull(admin);
    final Table table = framework.getDataset(MY_TABLE, DatasetDefinition.NO_ARGUMENTS, null);
    Assert.assertNotNull(table);
    txnl = new DefaultTransactionExecutor(new MinimalTxSystemClient(), (TransactionAware) table);
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            table.put(Bytes.toBytes("key1"), Bytes.toBytes("column1"), Bytes.toBytes("value1"));
        }
    });
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertEquals("value1", Bytes.toString(table.get(Bytes.toBytes("key1"), Bytes.toBytes("column1"))));
        }
    });
    // cleanup
    framework.deleteInstance(MY_TABLE);
}

Example 8 with DefaultTransactionExecutor

use of org.apache.tephra.DefaultTransactionExecutor in project cdap by caskdata.

the class AbstractDatasetFrameworkTest method testNamespaceInstanceIsolation.

@Test
@SuppressWarnings("ConstantConditions")
public void testNamespaceInstanceIsolation() throws Exception {
    DatasetFramework framework = getFramework();
    // create 2 namespaces
    NamespaceId namespace1 = new NamespaceId("ns1");
    NamespaceId namespace2 = new NamespaceId("ns2");
    namespaceAdmin.create(new NamespaceMeta.Builder().setName(namespace1).build());
    namespaceAdmin.create(new NamespaceMeta.Builder().setName(namespace2).build());
    namespacedLocationFactory.get(namespace1).mkdirs();
    namespacedLocationFactory.get(namespace2).mkdirs();
    // create 2 tables, one in each namespace. both tables have the same name.
    DatasetId table1ID = namespace1.dataset("table");
    DatasetId table2ID = namespace2.dataset("table");
    // have slightly different properties so that we can distinguish between them
    framework.addInstance(Table.class.getName(), table1ID, DatasetProperties.builder().add("tag", "table1").build());
    framework.addInstance(Table.class.getName(), table2ID, DatasetProperties.builder().add("tag", "table2").build());
    // perform some data operations to make sure they are not the same underlying table
    final Table table1 = framework.getDataset(table1ID, Maps.<String, String>newHashMap(), null);
    final Table table2 = framework.getDataset(table2ID, Maps.<String, String>newHashMap(), null);
    TransactionExecutor txnl = new DefaultTransactionExecutor(new MinimalTxSystemClient(), (TransactionAware) table1, (TransactionAware) table2);
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            table1.put(Bytes.toBytes("rowkey"), Bytes.toBytes("column"), Bytes.toBytes("val1"));
            table2.put(Bytes.toBytes("rowkey"), Bytes.toBytes("column"), Bytes.toBytes("val2"));
        }
    });
    // check data is different, which means they are different underlying tables
    txnl.execute(new TransactionExecutor.Subroutine() {

        @Override
        public void apply() throws Exception {
            Assert.assertEquals("val1", Bytes.toString(table1.get(Bytes.toBytes("rowkey"), Bytes.toBytes("column"))));
            Assert.assertEquals("val2", Bytes.toString(table2.get(Bytes.toBytes("rowkey"), Bytes.toBytes("column"))));
        }
    });
    // check get all in a namespace only includes those in that namespace
    Collection<DatasetSpecificationSummary> specs = framework.getInstances(namespace1);
    Assert.assertEquals(1, specs.size());
    Assert.assertEquals("table1", specs.iterator().next().getProperties().get("tag"));
    specs = framework.getInstances(namespace2);
    Assert.assertEquals(1, specs.size());
    Assert.assertEquals("table2", specs.iterator().next().getProperties().get("tag"));
    // delete one instance and make sure the other still exists
    framework.deleteInstance(table1ID);
    Assert.assertFalse(framework.hasInstance(table1ID));
    Assert.assertTrue(framework.hasInstance(table2ID));
    // delete all instances in one namespace and make sure the other still exists
    framework.addInstance(Table.class.getName(), table1ID, DatasetProperties.EMPTY);
    framework.deleteAllInstances(namespace1);
    Assert.assertTrue(framework.hasInstance(table2ID));
    // delete one namespace and make sure the other still exists
    namespacedLocationFactory.get(namespace1).delete(true);
    Assert.assertTrue(framework.hasInstance(table2ID));
}

Example 9 with DefaultTransactionExecutor

use of org.apache.tephra.DefaultTransactionExecutor in project cdap by caskdata.

the class TransactionServiceTest method testHA.

@Test(timeout = 30000)
public void testHA() throws Exception {
    // NOTE: we play with blocking/nonblocking a lot below
    // as until we integrate with "leader election" stuff, service blocks on start if it is not a leader
    // TODO: fix this by integration with generic leader election stuff
    CConfiguration cConf = CConfiguration.create();
    // tests should use the current user for HDFS
    cConf.set(Constants.CFG_HDFS_USER, System.getProperty("user.name"));
    cConf.set(Constants.Zookeeper.QUORUM, zkServer.getConnectionStr());
    cConf.set(Constants.CFG_LOCAL_DATA_DIR, tmpFolder.newFolder().getAbsolutePath());
    Injector injector = Guice.createInjector(new ConfigModule(cConf), new ZKClientModule(), new NonCustomLocationUnitTestModule().getModule(), new DiscoveryRuntimeModule().getDistributedModules(), new TransactionMetricsModule(), new AbstractModule() {

        @Override
        protected void configure() {
            bind(NamespaceQueryAdmin.class).to(SimpleNamespaceQueryAdmin.class);
            bind(UGIProvider.class).to(UnsupportedUGIProvider.class);
            bind(OwnerAdmin.class).to(DefaultOwnerAdmin.class);
        }
    }, new DataFabricModules().getDistributedModules(), Modules.override(new DataSetsModules().getDistributedModules()).with(new AbstractModule() {

        @Override
        protected void configure() {
            bind(MetadataStore.class).to(NoOpMetadataStore.class);
        }
    }), new AuthorizationTestModule(), new AuthorizationEnforcementModule().getInMemoryModules(), new AuthenticationContextModules().getNoOpModule());
    ZKClientService zkClient = injector.getInstance(ZKClientService.class);
    zkClient.startAndWait();
    try {
        final Table table = createTable("myTable");
        // tx service client
        // NOTE: we can init it earlier than we start services, it should pick them up when they are available
        TransactionSystemClient txClient = injector.getInstance(TransactionSystemClient.class);
        TransactionExecutor txExecutor = new DefaultTransactionExecutor(txClient, ImmutableList.of((TransactionAware) table));
        // starting tx service, tx client can pick it up
        TransactionService first = createTxService(zkServer.getConnectionStr(), Networks.getRandomPort(), hConf, tmpFolder.newFolder());
        first.startAndWait();
        Assert.assertNotNull(txClient.startShort());
        verifyGetAndPut(table, txExecutor, null, "val1");
        // starting another tx service should not hurt
        TransactionService second = createTxService(zkServer.getConnectionStr(), Networks.getRandomPort(), hConf, tmpFolder.newFolder());
        // NOTE: we don't have to wait for start as client should pick it up anyways, but we do wait to ensure
        // the case with two active is handled well
        second.startAndWait();
        // wait for affect a bit
        TimeUnit.SECONDS.sleep(1);
        Assert.assertNotNull(txClient.startShort());
        verifyGetAndPut(table, txExecutor, "val1", "val2");
        // shutting down the first one is fine: we have another one to pick up the leader role
        first.stopAndWait();
        Assert.assertNotNull(txClient.startShort());
        verifyGetAndPut(table, txExecutor, "val2", "val3");
        // doing same trick again to failover to the third one
        TransactionService third = createTxService(zkServer.getConnectionStr(), Networks.getRandomPort(), hConf, tmpFolder.newFolder());
        // NOTE: we don't have to wait for start as client should pick it up anyways
        third.start();
        // stopping second one
        second.stopAndWait();
        Assert.assertNotNull(txClient.startShort());
        verifyGetAndPut(table, txExecutor, "val3", "val4");
        // releasing resources
        third.stop();
    } finally {
        try {
            dropTable("myTable");
        } finally {
            zkClient.stopAndWait();
        }
    }
}