blob: fed332735aa3e38c2f125c3a4a555b87c578e2cf [file] [log] [blame]
/*
* 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();
}
}
}