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Fixed "Index out of range" when publishing from multiple thread (or from a message handler with prefetchcount > 1)

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This commit is contained in:
Mark van Renswoude 2019-05-20 15:22:40 +02:00
parent 4c08e9b684
commit 0bd9d06795
1 changed files with 61 additions and 19 deletions
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80
Tapeti/Connection/TapetiWorker.cs
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@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
@ -37,6 +38,9 @@ namespace Tapeti.Connection
private IModel channelInstance;
private ulong lastDeliveryTag;
private DateTime connectedDateTime;
// These fields must be locked, since the callbacks for BasicAck/BasicReturn can run in a different thread
private readonly object confirmLock = new Object();
private readonly Dictionary<ulong, ConfirmMessageInfo> confirmMessages = new Dictionary<ulong, ConfirmMessageInfo>();
private readonly Dictionary<string, ReturnInfo> returnRoutingKeys = new Dictionary<string, ReturnInfo>();
@ -208,6 +212,9 @@ namespace Tapeti.Connection
async (handler, next) => await handler.Handle(context, next),
() => taskQueue.Value.Add(async () =>
{
if (Thread.CurrentThread.ManagedThreadId != 3)
Debug.WriteLine(Thread.CurrentThread.ManagedThreadId);
var body = messageSerializer.Serialize(context.Message, context.Properties);
Task<int> publishResultTask = null;
@ -225,7 +232,16 @@ namespace Tapeti.Connection
{
lastDeliveryTag++;
confirmMessages.Add(lastDeliveryTag, messageInfo);
Monitor.Enter(confirmLock);
try
{
confirmMessages.Add(lastDeliveryTag, messageInfo);
}
finally
{
Monitor.Exit(confirmLock);
}
publishResultTask = messageInfo.CompletionSource.Task;
}
else
@ -326,7 +342,17 @@ namespace Tapeti.Connection
if (config.UsePublisherConfirms)
{
lastDeliveryTag = 0;
confirmMessages.Clear();
Monitor.Enter(confirmLock);
try
{
confirmMessages.Clear();
}
finally
{
Monitor.Exit(confirmLock);
}
channelInstance.ConfirmSelect();
}
@ -403,35 +429,51 @@ namespace Tapeti.Connection
private void HandleBasicAck(object sender, BasicAckEventArgs e)
{
foreach (var deliveryTag in GetDeliveryTags(e))
Monitor.Enter(confirmLock);
try
{
if (!confirmMessages.TryGetValue(deliveryTag, out var messageInfo))
continue;
if (returnRoutingKeys.TryGetValue(messageInfo.ReturnKey, out var returnInfo))
foreach (var deliveryTag in GetDeliveryTags(e))
{
messageInfo.CompletionSource.SetResult(returnInfo.FirstReplyCode);
if (!confirmMessages.TryGetValue(deliveryTag, out var messageInfo))
continue;
returnInfo.RefCount--;
if (returnInfo.RefCount == 0)
returnRoutingKeys.Remove(messageInfo.ReturnKey);
if (returnRoutingKeys.TryGetValue(messageInfo.ReturnKey, out var returnInfo))
{
messageInfo.CompletionSource.SetResult(returnInfo.FirstReplyCode);
returnInfo.RefCount--;
if (returnInfo.RefCount == 0)
returnRoutingKeys.Remove(messageInfo.ReturnKey);
}
messageInfo.CompletionSource.SetResult(0);
confirmMessages.Remove(deliveryTag);
}
messageInfo.CompletionSource.SetResult(0);
confirmMessages.Remove(deliveryTag);
}
finally
{
Monitor.Exit(confirmLock);
}
}
private void HandleBasicNack(object sender, BasicNackEventArgs e)
{
foreach (var deliveryTag in GetDeliveryTags(e))
Monitor.Enter(confirmLock);
try
{
if (!confirmMessages.TryGetValue(deliveryTag, out var messageInfo))
continue;
foreach (var deliveryTag in GetDeliveryTags(e))
{
if (!confirmMessages.TryGetValue(deliveryTag, out var messageInfo))
continue;
messageInfo.CompletionSource.SetCanceled();
confirmMessages.Remove(e.DeliveryTag);
messageInfo.CompletionSource.SetCanceled();
confirmMessages.Remove(e.DeliveryTag);
}
}
finally
{
Monitor.Exit(confirmLock);
}
}