| /* |
| * 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. |
| */ |
| |
| using System; |
| using System.Collections.Concurrent; |
| using System.Collections.Generic; |
| using System.Linq; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Amqp; |
| using Amqp.Framing; |
| using Apache.NMS.AMQP.Meta; |
| using Apache.NMS.AMQP.Util; |
| |
| namespace Apache.NMS.AMQP.Provider.Amqp |
| { |
| public class AmqpSession |
| { |
| private readonly ConcurrentDictionary<Id, AmqpConsumer> consumers = new ConcurrentDictionary<Id, AmqpConsumer>(); |
| private readonly ConcurrentDictionary<Id, AmqpProducer> producers = new ConcurrentDictionary<Id, AmqpProducer>(); |
| protected readonly SessionInfo SessionInfo; |
| |
| public AmqpSession(AmqpConnection connection, SessionInfo sessionInfo) |
| { |
| Connection = connection; |
| SessionInfo = sessionInfo; |
| |
| if (sessionInfo.IsTransacted) |
| { |
| TransactionContext = new AmqpTransactionContext(this); |
| } |
| } |
| |
| public AmqpTransactionContext TransactionContext { get; } |
| |
| public AmqpConnection Connection { get; } |
| public Session UnderlyingSession { get; private set; } |
| |
| public IEnumerable<AmqpConsumer> Consumers => consumers.Values.ToArray(); |
| public Id SessionId => SessionInfo.Id; |
| |
| public Task Start() |
| { |
| TaskCompletionSource<bool> tcs = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously); |
| |
| if (SessionInfo.requestTimeout > 0) |
| { |
| CancellationTokenSource ct = new CancellationTokenSource(TimeSpan.FromMilliseconds(SessionInfo.requestTimeout)); |
| ct.Token.Register(() => tcs.TrySetCanceled(), false); |
| } |
| |
| UnderlyingSession = new Session(Connection.UnderlyingConnection, CreateBeginFrame(), |
| (session, begin) => |
| { |
| SessionInfo.remoteChannel = begin.RemoteChannel; |
| tcs.TrySetResult(true); |
| }); |
| UnderlyingSession.AddClosedCallback((sender, error) => |
| { |
| if (!tcs.TrySetException(ExceptionSupport.GetException(error))) |
| { |
| Connection.RemoveSession(SessionInfo.Id); |
| } |
| }); |
| return tcs.Task; |
| } |
| |
| public void Close() |
| { |
| TimeSpan timeout = TimeSpan.FromMilliseconds(SessionInfo.closeTimeout); |
| TransactionContext?.Close(timeout); |
| UnderlyingSession.Close(timeout); |
| Connection.RemoveSession(SessionInfo.Id); |
| } |
| |
| public Task BeginTransaction(TransactionInfo transactionInfo) |
| { |
| if (!SessionInfo.IsTransacted) |
| { |
| throw new IllegalStateException("Non-transacted Session cannot start a TX."); |
| } |
| |
| return TransactionContext.Begin(transactionInfo); |
| } |
| |
| private Begin CreateBeginFrame() |
| { |
| return new Begin |
| { |
| HandleMax = Connection.Provider.MaxHandle, |
| IncomingWindow = SessionInfo.incomingWindow, |
| OutgoingWindow = SessionInfo.outgoingWindow, |
| NextOutgoingId = SessionInfo.nextOutgoingId |
| }; |
| } |
| |
| public async Task CreateConsumer(ConsumerInfo consumerInfo) |
| { |
| AmqpConsumer amqpConsumer = new AmqpConsumer(this, consumerInfo); |
| await amqpConsumer.Attach(); |
| consumers.TryAdd(consumerInfo.Id, amqpConsumer); |
| } |
| |
| public async Task CreateProducer(ProducerInfo producerInfo) |
| { |
| var amqpProducer = new AmqpProducer(this, producerInfo); |
| await amqpProducer.Attach(); |
| producers.TryAdd(producerInfo.Id, amqpProducer); |
| } |
| |
| public AmqpConsumer GetConsumer(Id consumerId) |
| { |
| if (consumers.TryGetValue(consumerId, out var consumer)) |
| { |
| return consumer; |
| } |
| |
| throw new Exception(); |
| } |
| |
| public AmqpProducer GetProducer(Id producerId) |
| { |
| if (producers.TryGetValue(producerId, out var producer)) |
| { |
| return producer; |
| } |
| |
| throw new Exception(); |
| } |
| |
| public void RemoveConsumer(Id consumerId) |
| { |
| consumers.TryRemove(consumerId, out _); |
| } |
| |
| public void RemoveProducer(Id producerId) |
| { |
| producers.TryRemove(producerId, out _); |
| } |
| |
| /// <summary> |
| /// Perform re-send of all delivered but not yet acknowledged messages for all consumers |
| /// active in this Session. |
| /// </summary> |
| public void Recover() |
| { |
| foreach (var consumer in consumers.Values) |
| { |
| consumer.Recover(); |
| } |
| } |
| |
| public bool ContainsSubscriptionName(string subscriptionName) |
| { |
| return consumers.Values.Any(consumer => consumer.HasSubscription(subscriptionName)); |
| } |
| |
| /// <summary> |
| /// Roll back the currently running Transaction |
| /// </summary> |
| /// <param name="transactionInfo">The TransactionInfo describing the transaction being rolled back.</param> |
| /// <param name="nextTransactionInfo">The JmsTransactionInfo describing the transaction that should be started immediately.</param> |
| /// <exception cref="IllegalStateException"></exception> |
| public Task Rollback(TransactionInfo transactionInfo, TransactionInfo nextTransactionInfo) |
| { |
| if (!SessionInfo.IsTransacted) |
| { |
| throw new IllegalStateException("Non-transacted Session cannot rollback a TX."); |
| } |
| |
| return TransactionContext.Rollback(transactionInfo, nextTransactionInfo); |
| } |
| |
| public Task Commit(TransactionInfo transactionInfo, TransactionInfo nextTransactionInfo) |
| { |
| if (!SessionInfo.IsTransacted) |
| { |
| throw new IllegalStateException("Non-transacted Session cannot commit a TX."); |
| } |
| |
| return TransactionContext.Commit(transactionInfo, nextTransactionInfo); |
| } |
| } |
| } |