| /* |
| * 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. |
| */ |
| |
| namespace Apache.Ignite.Core.Impl.Client.Transactions |
| { |
| using System; |
| using System.Diagnostics; |
| using System.Diagnostics.CodeAnalysis; |
| using System.Threading; |
| using System.Transactions; |
| using Apache.Ignite.Core.Client.Transactions; |
| using Apache.Ignite.Core.Impl.Transactions; |
| |
| /// <summary> |
| /// Cache transaction enlistment manager, |
| /// allows using Ignite transactions via standard <see cref="TransactionScope"/>. |
| /// </summary> |
| internal class ClientCacheTransactionManager : ISinglePhaseNotification, IDisposable |
| { |
| /** */ |
| private ITransactionsClient _transactions; |
| |
| /** */ |
| private ThreadLocal<Enlistment> _enlistment = new ThreadLocal<Enlistment>(); |
| |
| /// <summary> |
| /// Initializes a new instance of <see cref="ClientCacheTransactionManager"/> class. |
| /// </summary> |
| /// <param name="transactions">Transactions.</param> |
| public ClientCacheTransactionManager(ITransactionsClient transactions) |
| { |
| _transactions = transactions; |
| } |
| |
| /// <summary> |
| /// If ambient transaction is present, starts an Ignite transaction and enlists it. |
| /// </summary> |
| public void StartTxIfNeeded() |
| { |
| if (_transactions.Tx != null) |
| { |
| // Ignite transaction is already present. |
| // We have either enlisted it already, or it has been started manually and should not be enlisted. |
| // Java enlists existing Ignite tx in this case (see CacheJtaManager.java), but we do not. |
| return; |
| } |
| |
| var ambientTx = System.Transactions.Transaction.Current; |
| |
| if (ambientTx != null && ambientTx.TransactionInformation.Status == TransactionStatus.Active) |
| { |
| _transactions.TxStart(_transactions.DefaultTransactionConcurrency, |
| CacheTransactionManager.ConvertTransactionIsolation(ambientTx.IsolationLevel), |
| _transactions.DefaultTimeout); |
| _enlistment.Value = ambientTx.EnlistVolatile(this, EnlistmentOptions.None); |
| } |
| } |
| |
| /** <inheritDoc /> */ |
| void IEnlistmentNotification.Prepare(PreparingEnlistment preparingEnlistment) |
| { |
| preparingEnlistment.Prepared(); |
| } |
| |
| /** <inheritDoc /> */ |
| void IEnlistmentNotification.Commit(Enlistment enlistment) |
| { |
| Debug.Assert(enlistment != null); |
| |
| var igniteTx = _transactions.Tx; |
| |
| if (igniteTx != null && _enlistment.Value != null) |
| { |
| Debug.Assert(ReferenceEquals(enlistment, _enlistment.Value)); |
| |
| igniteTx.Commit(); |
| igniteTx.Dispose(); |
| _enlistment.Value = null; |
| } |
| |
| enlistment.Done(); |
| } |
| |
| /** <inheritDoc /> */ |
| void IEnlistmentNotification.Rollback(Enlistment enlistment) |
| { |
| Debug.Assert(enlistment != null); |
| |
| var igniteTx = _transactions.Tx; |
| |
| if (igniteTx != null && _enlistment.Value != null) |
| { |
| igniteTx.Rollback(); |
| igniteTx.Dispose(); |
| _enlistment.Value = null; |
| } |
| |
| enlistment.Done(); |
| } |
| |
| /** <inheritDoc /> */ |
| void IEnlistmentNotification.InDoubt(Enlistment enlistment) |
| { |
| Debug.Assert(enlistment != null); |
| |
| enlistment.Done(); |
| } |
| |
| /** <inheritDoc /> */ |
| void ISinglePhaseNotification.SinglePhaseCommit(SinglePhaseEnlistment enlistment) |
| { |
| Debug.Assert(enlistment != null); |
| |
| var igniteTx = _transactions.Tx; |
| |
| if (igniteTx != null && _enlistment.Value != null) |
| { |
| igniteTx.Commit(); |
| igniteTx.Dispose(); |
| _enlistment.Value = null; |
| } |
| |
| enlistment.Committed(); |
| } |
| |
| /** <inheritDoc /> */ |
| [SuppressMessage("Microsoft.Usage", |
| "CA1816:CallGCSuppressFinalizeCorrectly", |
| Justification = "There is no finalizer.")] |
| public void Dispose() |
| { |
| _transactions = null; |
| var localEnlistment = _enlistment; |
| if (localEnlistment != null) |
| { |
| localEnlistment.Dispose(); |
| _enlistment = null; |
| } |
| } |
| } |
| } |