public override Host Build()
{
if (ServiceBuilders.Count > 1)
{
throw new HostConfigurationException("A shelf can only have one service configured");
}
ServiceBuilder builder = ServiceBuilders.Single();
_log.DebugFormat("[Shelf:{0}] Building Service: {1}", Description.Name, builder.Name);
var controllerFactory = new ServiceControllerFactory();
ActorFactory <IServiceController> factory = controllerFactory.CreateFactory(inbox =>
{
var publish = new PublishChannel(_channel, inbox);
IServiceController service = builder.Build(inbox, publish);
return(service);
});
ActorRef instance = factory.GetActor();
_channel.Connect(x => x.AddChannel(instance));
// this creates the state machine instance in the shelf and tells the servicecontroller
// to create the service
instance.Send(new CreateService(Description.Name));
return(new ShelfHost(instance));
}
/// <summary>
/// Publishes a message to the queue using the QueueName as the routingKey.
/// </summary>
/// <typeparam name="T">The type of the message object.</typeparam>
/// <param name="msg">The message.</param>
/// <param name="exchange">[Optional] The exchange name.</param>
/// <param name="delayMilliseconds">[Optional] The delay milliseconds before the message is available in the queue.</param>
private void PublishMessage <T> (T msg, string exchange, string queueName, int delayMilliseconds)
{
// set persistent property
IBasicProperties basicProperties = null;
if (_publishPersistent)
{
if (basicProperties == null)
{
basicProperties = ConsumerChannel.CreateBasicProperties();
}
basicProperties.Persistent = _publishPersistent;
}
if (_retryDelayMilliseconds > 0)
{
if (basicProperties == null)
{
basicProperties = ConsumerChannel.CreateBasicProperties();
}
basicProperties.AddHeader("x-delay", _retryDelayMilliseconds);
}
// publish message
PublishChannel.BasicPublish(exchange: exchange ?? "",
routingKey: queueName,
basicProperties: basicProperties,
body: GetMessageContent(msg));
}
private bool CheckRetryLimit(long retryLimit, RabbitWorkMessage msg)
{
IBasicProperties properties = msg.BasicProperties;
if (retryLimit <= 0)
{
return(true);
}
// check dead-letter counter (number of times the message was dlx)
long count = msg.GetRetryCount();
// check dlx count against our threshold
if (count >= retryLimit)
{
// move message to dead-letter queue
if (String.IsNullOrEmpty(deadLetterQueue))
{
// create dead letter queue
lock (QueueName)
{
deadLetterQueue = QueueName + ".dead-letter";
deadLetterQueue = EnsureQueueExists(deadLetterQueue, Mode);
}
}
// publish message to the deadletter queue
PublishChannel.BasicPublish("", deadLetterQueue, (IBasicProperties)properties.Clone(), msg.Body);
// delete message
Ack(msg);
return(false);
}
return(true);
}
private Task CreateConnections(IConnectionFactory factory)
{
try
{
ReadConnection = factory.CreateConnection();
WriteConnection = factory.CreateConnection();
}
catch (Exception e)
{
return(Task.FromException(e));
}
PublishChannel = WriteConnection.CreateModel();
PublishChannel.ExchangeDeclare(Group, "direct");
var rpcModel = GetOrCreateChannel("RPC");
RPCQueueName = rpcModel.QueueDeclare().QueueName;
rpcModel.QueueBind(RPCQueueName, Group, RPCQueueName);
RPCConsumer = new EventingBasicConsumer(rpcModel);
rpcModel.BasicConsume(RPCQueueName, AutoAck, RPCConsumer);
return(Task.CompletedTask);
}
public override Host Build()
{
if (ServiceBuilders.Count > 1)
throw new HostConfigurationException("A shelf can only have one service configured");
ServiceBuilder builder = ServiceBuilders.Single();
_log.DebugFormat("[Shelf:{0}] Building Service: {1}", Description.Name, builder.Name);
var controllerFactory = new ServiceControllerFactory();
ActorFactory<IServiceController> factory = controllerFactory.CreateFactory(inbox =>
{
var publish = new PublishChannel(_channel, inbox);
IServiceController service = builder.Build(inbox, publish);
return service;
});
ActorRef instance = factory.GetActor();
_channel.Connect(x => x.AddChannel(instance));
// this creates the state machine instance in the shelf and tells the servicecontroller
// to create the service
instance.Send(new CreateService(Description.Name));
return new ShelfHost(instance);
}
/// <summary>
/// 关闭并释放通道
/// </summary>
public void Dispose()
{
if (PublishChannel.IsOpen)
{
PublishChannel.Close();
}
PublishChannel.Dispose();
}
/// <summary>
/// PublishAsync Publishes a message
/// </summary>
/// <param name="event">The name of the event to publish</param>
/// <param name="data">The data of the event to publish</param>
/// <param name="options">Optional options for this Publish</param>
/// <returns>Task</returns>
public Task PublishAsync(string @event, byte[] data, IBasicProperties options = null)
{
lock (PublishChannel)
{
PublishChannel.BasicPublish(Group, @event, false, options ?? new BasicProperties(),
data);
}
return(Task.CompletedTask);
}
/// <summary>
/// Disconnect disconnects the Client from the Amqp Server.
/// </summary>
/// <param name="code">The status code of the disconnect.</param>
/// <param name="text">The status text of the disconnect.</param>
public void Disconnect(ushort code, string text)
{
lock (PublishChannel)
{
PublishChannel.Close(code, text);
}
foreach (var value in SubscribeChannels.Values)
{
value.Close();
}
WriteConnection.Close(code, text);
ReadConnection.Close(code, text);
}
/// <summary>
/// Publishes the specified message to the specified queue.
/// </summary>
/// <param name="message">Message to queue.</param>
/// <param name="queue">Queue to place message in.</param>
public static bool Publish(byte[] message, RabbitMqQueue queue, bool noConfirm)
{
PublishChannel pChannel = GetPublishChannel(queue, noConfirm);
lock (pChannel.Lock)
{
IModel channel = pChannel.Channel;
IBasicProperties msgProps = channel.CreateBasicProperties();
msgProps.Persistent = true;
channel.BasicPublish(string.Empty, GetQueueNameFromEnum(queue), true, msgProps, message);
if (noConfirm)
{
return(true);
}
if (!channel.WaitForConfirms())
{
return(false);
}
return(true);
}
}
/// <summary>
///
/// </summary>
/// <param name="queue"></param>
/// <returns></returns>
public static PublishChannel GetPublishChannel(RabbitMqQueue queue, bool noConfirm)
{
IModel channel = GetChannel(queue); // Ensure the Queue exists.
if (noConfirm)
{
return(new PublishChannel(channel));
}
int threadID = Thread.CurrentThread.ManagedThreadId;
lock (_PublishChannelsLock)
{
if (!_PublishChannels.ContainsKey(threadID))
{
PublishChannel pChannel = new PublishChannel(LocalhostConnection.CreateModel());
pChannel.Channel.ConfirmSelect();
_PublishChannels.Add(threadID, pChannel);
}
}
return(_PublishChannels[threadID]);
}
/// <summary>
/// Depublishes a RealEstate object.
/// </summary>
/// <param name="publishChannel">The channel to depublish from.</param>
/// <returns>
/// The task object representing the asynchronous operation.
/// </returns>
public Task UnpublishAsync(PublishChannel publishChannel)
{
return(Publish.UnpublishAsync(RealEstate, publishChannel));
}
/// <summary>
/// Depublishes a list of RealEstate objects.
/// </summary>
/// <param name="realEstates">The RealEstate objects.</param>
/// <param name="publishChannel">The channel to depublish from.</param>
public Task <PublishObjects> UnpublishAsync(IEnumerable <RealEstate> realEstates, PublishChannel publishChannel)
{
return(UnpublishAsync(realEstates, (int)publishChannel.Id.Value));
}
/// <summary>
/// Publishes a RealEstate object.
/// </summary>
/// <param name="realEstate">The RealEstate object.</param>
/// <param name="publishChannel">The channel to publish to.</param>
/// <returns></returns>
public Task PublishAsync(RealEstate realEstate, PublishChannel publishChannel)
{
return(PublishAsync(realEstate, (int)publishChannel.Id));
}
/// <summary>
/// Publishes a RealEstate object.
/// </summary>
/// <param name="publishChannel">The channel to publish to.</param>
/// <returns>
/// The task object representing the asynchronous operation.
/// </returns>
public Task PublishAsync(PublishChannel publishChannel)
{
return Publish.PublishAsync(RealEstate, publishChannel);
}
/// <summary>
/// Depublishes a list of RealEstate objects.
/// </summary>
/// <param name="realEstates">The RealEstate objects.</param>
/// <param name="publishChannel">The channel to depublish from.</param>
public Task<PublishObjects> UnpublishAsync(IEnumerable<RealEstate> realEstates, PublishChannel publishChannel)
{
return UnpublishAsync(realEstates, (int)publishChannel.Id.Value);
}
/// <summary>
/// Publishes a RealEstate object.
/// </summary>
/// <param name="realEstate">The RealEstate object.</param>
/// <param name="publishChannel">The channel to publish to.</param>
/// <returns></returns>
public Task PublishAsync(RealEstate realEstate, PublishChannel publishChannel)
{
return PublishAsync(realEstate, (int)publishChannel.Id);
}