| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.tephra; |
| |
| import com.google.common.collect.ImmutableList; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.tephra.metrics.TxMetricsCollector; |
| import org.apache.tephra.persist.InMemoryTransactionStateStorage; |
| import org.apache.tephra.persist.TransactionStateStorage; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Test the retention of client ids in Tx Manager |
| */ |
| @SuppressWarnings("WeakerAccess") |
| public class ClientIdTest { |
| |
| @Test |
| public void testClientIdRetention() throws TransactionFailureException { |
| testClientIdRetention(TransactionManager.ClientIdRetention.OFF, false, false); |
| testClientIdRetention(TransactionManager.ClientIdRetention.ACTIVE, true, false); |
| testClientIdRetention(TransactionManager.ClientIdRetention.COMMITTED, true, true); |
| } |
| |
| private void testClientIdRetention(TransactionManager.ClientIdRetention retention, |
| boolean expectClientIdInProgress, |
| boolean expectClientIdCommitted) throws TransactionFailureException { |
| Configuration conf = new Configuration(); |
| conf.set(TxConstants.Manager.CFG_TX_RETAIN_CLIENT_ID, retention.toString()); |
| TransactionStateStorage txStateStorage = new InMemoryTransactionStateStorage(); |
| TransactionManager txManager = new TransactionManager(conf, txStateStorage, new TxMetricsCollector()); |
| txManager.startAndWait(); |
| try { |
| testConflict(txManager, expectClientIdInProgress, expectClientIdCommitted); |
| } finally { |
| txManager.stopAndWait(); |
| } |
| } |
| |
| public void testConflict(TransactionManager txManager, |
| boolean expectClientIdInProgress, |
| boolean expectClientIdCommitted) throws TransactionFailureException { |
| testConflict(txManager, expectClientIdInProgress, expectClientIdCommitted, true); |
| testConflict(txManager, expectClientIdInProgress, expectClientIdCommitted, false); |
| } |
| |
| /** |
| * Tests two conflicting transactions. |
| * The resulting exception must carry the conflicting change key and client id. |
| * |
| * @param expectClientIdInProgress whether to expect client id in in-progress transactions |
| * @param expectClientIdCommitted whether to expect client id in committed chaneg sets |
| * @param testCanCommit whether the conflict should be induced by canCommit() or by commit() |
| */ |
| public void testConflict(TransactionManager txManager, |
| boolean expectClientIdInProgress, |
| boolean expectClientIdCommitted, |
| boolean testCanCommit) throws TransactionFailureException { |
| // start two transactions, validate client id |
| Transaction tx1 = txManager.startShort("clientA"); |
| Transaction tx2 = txManager.startShort("clientB"); |
| TransactionManager.InProgressTx inProgressTx1 = txManager.getInProgress(tx1.getTransactionId()); |
| Assert.assertNotNull(inProgressTx1); |
| if (expectClientIdInProgress) { |
| Assert.assertEquals("clientA", inProgressTx1.getClientId()); |
| } else { |
| Assert.assertNull(inProgressTx1.getClientId()); |
| } |
| |
| // now commit the two transactions with overlapping change sets to create a conflict |
| final byte[] change1 = new byte[] { '1' }; |
| final byte[] change2 = new byte[] { '2' }; |
| final byte[] change3 = new byte[] { '3' }; |
| if (!testCanCommit) { |
| txManager.canCommit(tx2.getTransactionId(), ImmutableList.of(change2, change3)); |
| } |
| txManager.canCommit(tx1.getTransactionId(), ImmutableList.of(change1, change2)); |
| txManager.commit(tx1.getTransactionId(), tx1.getWritePointer()); |
| try { |
| if (testCanCommit) { |
| txManager.canCommit(tx2.getTransactionId(), ImmutableList.of(change2, change3)); |
| } else { |
| txManager.commit(tx2.getTransactionId(), tx2.getWritePointer()); |
| } |
| Assert.fail("canCommit() should have failed with conflict"); |
| } catch (TransactionConflictException e) { |
| Assert.assertNotNull(e.getTransactionId()); |
| Assert.assertEquals(tx2.getTransactionId(), e.getTransactionId().longValue()); |
| Assert.assertEquals("2", e.getConflictingKey()); |
| if (expectClientIdCommitted) { |
| Assert.assertEquals("clientA", e.getConflictingClient()); |
| } else { |
| Assert.assertNull(e.getConflictingClient()); |
| } |
| } |
| } |
| } |