+ private void testTransactionCommitFailureWithNoShardLeader(final boolean writeOnly) throws Throwable {
+ new IntegrationTestKit(getSystem()) {{
+ String testName = "testTransactionCommitFailureWithNoShardLeader";
+ String shardName = "default";
+
+ // We don't want the shard to become the leader so prevent shard election from completing
+ // by setting the election timeout, which is based on the heartbeat interval, really high.
+
+ datastoreContextBuilder.shardHeartbeatIntervalInMillis(30000);
+ datastoreContextBuilder.shardInitializationTimeout(300, TimeUnit.MILLISECONDS);
+
+ // Set the leader election timeout low for the test.
+
+ datastoreContextBuilder.shardLeaderElectionTimeout(1, TimeUnit.MILLISECONDS);
+
+ DistributedDataStore dataStore = setupDistributedDataStore(testName, false, shardName);
+
+ // Create the write Tx.
+
+ final DOMStoreWriteTransaction writeTx = writeOnly ? dataStore.newWriteOnlyTransaction() :
+ dataStore.newReadWriteTransaction();
+ assertNotNull("newReadWriteTransaction returned null", writeTx);
+
+ // Do some modifications and ready the Tx on a separate thread.
+
+ final AtomicReference<DOMStoreThreePhaseCommitCohort> txCohort = new AtomicReference<>();
+ final AtomicReference<Exception> caughtEx = new AtomicReference<>();
+ final CountDownLatch txReady = new CountDownLatch(1);
+ Thread txThread = new Thread() {
+ @Override
+ public void run() {
+ try {
+ writeTx.write(TestModel.JUNK_PATH,
+ ImmutableNodes.containerNode(TestModel.JUNK_QNAME));
+
+ txCohort.set(writeTx.ready());
+ } catch(Exception e) {
+ caughtEx.set(e);
+ return;
+ } finally {
+ txReady.countDown();
+ }
+ }
+ };
+
+ txThread.start();
+
+ // Wait for the Tx operations to complete.
+
+ boolean done = Uninterruptibles.awaitUninterruptibly(txReady, 5, TimeUnit.SECONDS);
+ if(caughtEx.get() != null) {
+ throw caughtEx.get();
+ }
+
+ assertEquals("Tx ready", true, done);
+
+ // Wait for the commit to complete. Since no shard leader was elected in time, the Tx
+ // should have timed out and throw an appropriate exception cause.
+
+ try {
+ txCohort.get().canCommit().get(5, TimeUnit.SECONDS);
+ } catch(ExecutionException e) {
+ throw e.getCause();
+ } finally {
+ cleanup(dataStore);
+ }
+ }};
+ }
+
+ @Test(expected=NoShardLeaderException.class)
+ public void testWriteOnlyTransactionCommitFailureWithNoShardLeader() throws Throwable {
+ datastoreContextBuilder.writeOnlyTransactionOptimizationsEnabled(true);
+ testTransactionCommitFailureWithNoShardLeader(true);
+ }
+
+ @Test(expected=NoShardLeaderException.class)
+ public void testReadWriteTransactionCommitFailureWithNoShardLeader() throws Throwable {
+ testTransactionCommitFailureWithNoShardLeader(false);
+ }
+
+ @Test
+ public void testTransactionAbort() throws Exception{
+ System.setProperty("shard.persistent", "true");
+ new IntegrationTestKit(getSystem()) {{
+ DistributedDataStore dataStore =
+ setupDistributedDataStore("transactionAbortIntegrationTest", "test-1");
+
+ DOMStoreWriteTransaction writeTx = dataStore.newWriteOnlyTransaction();
+ assertNotNull("newWriteOnlyTransaction returned null", writeTx);
+
+ writeTx.write(TestModel.TEST_PATH, ImmutableNodes.containerNode(TestModel.TEST_QNAME));
+
+ DOMStoreThreePhaseCommitCohort cohort = writeTx.ready();
+
+ cohort.canCommit().get(5, TimeUnit.SECONDS);
+
+ cohort.abort().get(5, TimeUnit.SECONDS);
+
+ testWriteTransaction(dataStore, TestModel.TEST_PATH,
+ ImmutableNodes.containerNode(TestModel.TEST_QNAME));
+
+ cleanup(dataStore);
+ }};
+ }
+
+ @Test
+ public void testTransactionChain() throws Exception{
+ new IntegrationTestKit(getSystem()) {{
+ DistributedDataStore dataStore = setupDistributedDataStore("testTransactionChain", "test-1");
+
+ // 1. Create a Tx chain and write-only Tx
+
+ DOMStoreTransactionChain txChain = dataStore.createTransactionChain();
+
+ DOMStoreWriteTransaction writeTx = txChain.newWriteOnlyTransaction();
+ assertNotNull("newWriteOnlyTransaction returned null", writeTx);
+
+ // 2. Write some data
+
+ NormalizedNode<?, ?> testNode = ImmutableNodes.containerNode(TestModel.TEST_QNAME);
+ writeTx.write(TestModel.TEST_PATH, testNode);
+
+ // 3. Ready the Tx for commit
+
+ final DOMStoreThreePhaseCommitCohort cohort1 = writeTx.ready();
+
+ // 4. Commit the Tx on another thread that first waits for the second read Tx.
+
+ final CountDownLatch continueCommit1 = new CountDownLatch(1);
+ final CountDownLatch commit1Done = new CountDownLatch(1);
+ final AtomicReference<Exception> commit1Error = new AtomicReference<>();
+ new Thread() {
+ @Override
+ public void run() {
+ try {
+ continueCommit1.await();
+ doCommit(cohort1);
+ } catch (Exception e) {
+ commit1Error.set(e);
+ } finally {
+ commit1Done.countDown();
+ }
+ }
+ }.start();
+
+ // 5. Create a new read Tx from the chain to read and verify the data from the first
+ // Tx is visible after being readied.
+
+ DOMStoreReadTransaction readTx = txChain.newReadOnlyTransaction();
+ Optional<NormalizedNode<?, ?>> optional = readTx.read(TestModel.TEST_PATH).get(5, TimeUnit.SECONDS);
+ assertEquals("isPresent", true, optional.isPresent());
+ assertEquals("Data node", testNode, optional.get());
+
+ // 6. Create a new RW Tx from the chain, write more data, and ready it
+
+ DOMStoreReadWriteTransaction rwTx = txChain.newReadWriteTransaction();
+ MapNode outerNode = ImmutableNodes.mapNodeBuilder(TestModel.OUTER_LIST_QNAME).build();
+ rwTx.write(TestModel.OUTER_LIST_PATH, outerNode);
+
+ DOMStoreThreePhaseCommitCohort cohort2 = rwTx.ready();
+
+ // 7. Create a new read Tx from the chain to read the data from the last RW Tx to
+ // verify it is visible.
+
+ readTx = txChain.newReadWriteTransaction();
+ optional = readTx.read(TestModel.OUTER_LIST_PATH).get(5, TimeUnit.SECONDS);
+ assertEquals("isPresent", true, optional.isPresent());
+ assertEquals("Data node", outerNode, optional.get());
+
+ // 8. Wait for the 2 commits to complete and close the chain.
+
+ continueCommit1.countDown();
+ Uninterruptibles.awaitUninterruptibly(commit1Done, 5, TimeUnit.SECONDS);
+
+ if(commit1Error.get() != null) {
+ throw commit1Error.get();
+ }
+
+ doCommit(cohort2);
+
+ txChain.close();
+
+ // 9. Create a new read Tx from the data store and verify committed data.
+
+ readTx = dataStore.newReadOnlyTransaction();
+ optional = readTx.read(TestModel.OUTER_LIST_PATH).get(5, TimeUnit.SECONDS);
+ assertEquals("isPresent", true, optional.isPresent());
+ assertEquals("Data node", outerNode, optional.get());
+
+ cleanup(dataStore);
+ }};
+ }
+
+ @Test
+ public void testCreateChainedTransactionsInQuickSuccession() throws Exception{
+ new IntegrationTestKit(getSystem()) {{
+ DistributedDataStore dataStore = setupDistributedDataStore(
+ "testCreateChainedTransactionsInQuickSuccession", "test-1");
+
+ DOMStoreTransactionChain txChain = dataStore.createTransactionChain();
+
+ NormalizedNode<?, ?> testNode = ImmutableNodes.containerNode(TestModel.TEST_QNAME);
+
+ int nTxs = 20;
+ List<DOMStoreThreePhaseCommitCohort> cohorts = new ArrayList<>(nTxs);
+ for(int i = 0; i < nTxs; i++) {
+ DOMStoreReadWriteTransaction rwTx = txChain.newReadWriteTransaction();
+
+ rwTx.merge(TestModel.TEST_PATH, testNode);
+
+ cohorts.add(rwTx.ready());
+
+ }
+
+ for(DOMStoreThreePhaseCommitCohort cohort: cohorts) {
+ doCommit(cohort);
+ }
+
+ txChain.close();
+
+ cleanup(dataStore);
+ }};
+ }