public Task Fail_WhenReturn()
{
#region Arrange
const ulong taskId = 4;
var modelMock = new Mock <IModel>();
modelMock.Setup(m => m.NextPublishSeqNo)
.Returns(taskId);
var propertiesMock = new FakeOptions
{
Headers = new Dictionary <string, object>()
};
var confirmableChannel = new PublishConfirmableChannel(modelMock.Object);
#endregion Arrange
#region Act
var publishTask = confirmableChannel.BasicPublishAsync(
string.Empty,
string.Empty,
true,
propertiesMock,
ReadOnlyMemory <byte> .Empty
);
Assert.IsTrue(propertiesMock.Headers.ContainsKey("publishTag"), "publishTag header not set!");
Assert.IsTrue(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not added!");
// emulate rabbitmq internal encoding.
propertiesMock.Headers["publishTag"] = Encoding.UTF8.GetBytes(taskId.ToString());
modelMock.Raise(m => m.BasicReturn += null, new BasicReturnEventArgs
{
ReplyCode = 500,
ReplyText = "Something went wrong!",
BasicProperties = propertiesMock
});
#endregion Act
#region Assert
return(publishTask.ContinueWith(t =>
{
Assert.IsTrue(t.IsFaulted, "Task should be faulted");
Assert.AreEqual("The message was returned by RabbitMQ: 500-Something went wrong!", t.Exception?.InnerException?.Message, "Error message does not equal!");
Assert.IsFalse(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not removed!");
}));
#endregion Assert
}
public Task Fail_WhenNotConfirmed()
{
#region Arrange
const int taskId = 3;
var modelMock = new Mock <IModel>();
modelMock.Setup(m => m.NextPublishSeqNo)
.Returns(taskId);
var propertiesMock = new FakeOptions
{
Headers = new Dictionary <string, object>()
};
var confirmableChannel = new PublishConfirmableChannel(modelMock.Object);
#endregion Arrange
#region Act
var publishTask = confirmableChannel.BasicPublishAsync(
string.Empty,
string.Empty,
true,
propertiesMock,
ReadOnlyMemory <byte> .Empty
);
Assert.IsTrue(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not added!");
modelMock.Raise(m => m.ModelShutdown += null, new ShutdownEventArgs(
ShutdownInitiator.Application,
500,
"REASON_FROM_RABBIT"
)
);
#endregion Act
#region Assert
return(publishTask.ContinueWith(t =>
{
Assert.IsTrue(t.IsFaulted, "Task should be faulted.");
Assert.AreEqual(
"The message was not confirmed by RabbitMQ within the specified period. REASON_FROM_RABBIT",
t.Exception?.InnerException?.Message
);
Assert.IsFalse(confirmableChannel.HasTaskWith(taskId));
}));
#endregion Assert
}
public Task Fail_WhenNack()
{
#region Arrange
const int taskId = 2;
var modelMock = new Mock <IModel>();
modelMock.Setup(m => m.NextPublishSeqNo)
.Returns(taskId);
var propertiesMock = new FakeOptions
{
Headers = new Dictionary <string, object>()
};
var confirmableChannel = new PublishConfirmableChannel(modelMock.Object);
#endregion Arrange
#region Act
var publishTask = confirmableChannel.BasicPublishAsync(
string.Empty,
string.Empty,
true,
propertiesMock,
ReadOnlyMemory <byte> .Empty
);
Assert.IsTrue(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not added!");
modelMock.Raise(m => m.BasicNacks += null, new BasicNackEventArgs
{
DeliveryTag = taskId,
Multiple = false
});
#endregion Act
#region Assert
return(publishTask.ContinueWith(t =>
{
Assert.IsTrue(t.IsFaulted);
Assert.AreEqual("The message was not acknowledged by RabbitMQ", t.Exception?.InnerException?.Message);
Assert.IsFalse(confirmableChannel.HasTaskWith(taskId));
}));
#endregion Assert
}
public Task Success_WhenAck()
{
#region Arrange
const int taskId = 1;
var modelMock = new Mock <IModel>();
modelMock.Setup(m => m.NextPublishSeqNo)
.Returns(taskId);
var propertiesMock = new FakeOptions
{
Headers = new Dictionary <string, object>()
};
var confirmableChannel = new PublishConfirmableChannel(modelMock.Object);
#endregion Arrange
#region Act
var publishTask = confirmableChannel.BasicPublishAsync(
string.Empty,
string.Empty,
true,
propertiesMock,
ReadOnlyMemory <byte> .Empty
);
Assert.IsTrue(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not added!");
modelMock.Raise(m => m.BasicAcks += null, new BasicAckEventArgs
{
DeliveryTag = taskId,
Multiple = false
});
#endregion Act
#region Assert
return(publishTask.ContinueWith(t =>
{
Assert.IsTrue(t.IsCompletedSuccessfully, "Task should complete successful");
Assert.IsFalse(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not removed!");
}));
#endregion Assert
}
public Task Fail_WhenTimedOut()
{
#region Arrange
const int taskId = 5;
var modelMock = new Mock <IModel>();
modelMock.Setup(m => m.NextPublishSeqNo)
.Returns(taskId);
var propertiesMock = new FakeOptions
{
Headers = new Dictionary <string, object>()
};
// timeout confirm immediatelly - we can add task to tracker, but timeout cancel it fast
var confirmTimeout = TimeSpan.FromMilliseconds(10);
var confirmableChannel = new PublishConfirmableChannel(modelMock.Object, confirmTimeout);
#endregion Arrange
#region Act
var publishTask = confirmableChannel.BasicPublishAsync(
string.Empty,
string.Empty,
true,
propertiesMock,
ReadOnlyMemory <byte> .Empty,
0
);
Assert.IsTrue(confirmableChannel.HasTaskWith(taskId), "PublishTaskInfo not added!");
#endregion Act
#region Assert
return(publishTask.ContinueWith(t =>
{
Assert.IsTrue(t.IsCanceled, "Task should be cancelled.");
Assert.IsNull(t.Exception);
Assert.IsFalse(confirmableChannel.HasTaskWith(taskId));
}));
#endregion Assert
}
/// <summary>
/// Подписаться на сообщения.
/// </summary>
/// <param name="messageHandler">Обработчик сообщений.</param>
/// <param name="settings">Настройки очереди.</param>
/// <param name="onUnsubscribed">
/// Функция обратного вызова, для отслеживания ситуации, когда остановлено потребление сообщений.
/// </param>
/// <returns>Канал, на котором работает подписчик.</returns>
/// <typeparam name="TMessage">Тип сообщения.</typeparam>
public async Task <IModel> SubscribeAsync <TMessage>(
AcknowledgableMessageHandler <TMessage> messageHandler,
SubscriberSettings settings,
Action <bool, string>?onUnsubscribed = null
)
where TMessage : class, IMessage
{
var channel = await BindAsync <TMessage>(settings);
if (settings.UsePublisherConfirms)
{
// создаем канал с подтверждениями публикаций сообщений
channel = new PublishConfirmableChannel(
channel,
TimeSpan.FromSeconds(10),
_logger
);
}
channel.BasicQos(0, settings.ScalingSettings.MessagesPerConsumer, false);
// если стоит лимит на канал, то делаем глобальным.
if (settings.ScalingSettings.MessagesPerChannel > 0)
{
channel.BasicQos(0, settings.ScalingSettings.MessagesPerChannel, true);
}
var queueName = _namingConvention.QueueNamingConvention(typeof(TMessage), settings);
for (var i = 0; i < settings.ScalingSettings.ConsumersPerChannel; i++)
{
var consumer = GetBasicConsumer(channel, settings, queueName, messageHandler, onUnsubscribed);
channel.BasicConsume(
queue: queueName,
autoAck: settings.AutoAck,
exclusive: settings.Exclusive,
consumer: consumer,
consumerTag: _namingConvention.ConsumerTagNamingConvention(settings, channel.ChannelNumber, i)
);
}
channel.CallbackException += (sender, ea) =>
{
_logger.RabbitHandlerRestarted(ea.Exception);
onUnsubscribed?.Invoke(false, ea.Exception?.Message ?? "Channel callback exception.");
};
channel.ModelShutdown += (sender, ea) =>
{
// если отключаем с админки
if (ea.Initiator == ShutdownInitiator.Peer && (ea.ReplyText.Contains("stop") || ea.ReplyText.Contains("Closed via management plugin")))
{
_logger.RabbitHandlerForceStopped(ea);
onUnsubscribed?.Invoke(true, ea.ToString()); // force
}
else
{
_logger.RabbitHandlerRestartedAfterReconnect(ea);
onUnsubscribed?.Invoke(false, ea.ToString());
}
};
return(channel);
}