| /* |
| * 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.Threading; |
| using System.Threading.Tasks; |
| using System.Threading.Tasks.Dataflow; |
| |
| namespace Apache.NMS.AMQP |
| { |
| internal class SessionDispatcher |
| { |
| private readonly ActionBlock<NmsMessageConsumer.MessageDeliveryTask> actionBlock; |
| private int dispatchThreadId; |
| private readonly CancellationTokenSource cts; |
| |
| public SessionDispatcher() |
| { |
| cts = new CancellationTokenSource(); |
| actionBlock = new ActionBlock<NmsMessageConsumer.MessageDeliveryTask>(HandleTask, new ExecutionDataflowBlockOptions |
| { |
| EnsureOrdered = true, |
| MaxDegreeOfParallelism = 1, |
| CancellationToken = cts.Token |
| }); |
| } |
| |
| public void Post(NmsMessageConsumer.MessageDeliveryTask task) => actionBlock.Post(task); |
| |
| public bool IsOnDeliveryThread() => dispatchThreadId == Thread.CurrentThread.ManagedThreadId; |
| |
| private void HandleTask(NmsMessageConsumer.MessageDeliveryTask messageDeliveryTask) |
| { |
| try |
| { |
| dispatchThreadId = Thread.CurrentThread.ManagedThreadId; |
| messageDeliveryTask.DeliverNextPending(); |
| } |
| finally |
| { |
| dispatchThreadId = -1; |
| } |
| } |
| |
| public void Stop() |
| { |
| actionBlock.Complete(); |
| cts.Cancel(); |
| cts.Dispose(); |
| } |
| } |
| } |