/// <summary>
/// Subscribes to receive published messages of the specified type if
/// they meet the provided condition.
/// </summary>
/// <param name="messageType">The type of message to subscribe to.</param>
/// <param name="condition">The condition under which to receive the message.</param>
public virtual void Subscribe(Type messageType, Predicate <object> condition)
{
MessagingBestPractices.AssertIsValidForPubSub(messageType);
if (Configure.SendOnlyMode)
{
throw new InvalidOperationException("It's not allowed for a send only endpoint to be a subscriber");
}
AssertHasLocalAddress();
var destination = GetAddressForMessageType(messageType);
if (Address.Self == destination)
{
throw new InvalidOperationException(string.Format("Message {0} is owned by the same endpoint that you're trying to subscribe", messageType));
}
if (SubscriptionManager == null)
{
throw new InvalidOperationException("No subscription manager is available");
}
SubscriptionManager.Subscribe(messageType, destination);
if (SubscriptionPredicatesEvaluator != null)
{
SubscriptionPredicatesEvaluator.AddConditionForSubscriptionToMessageType(messageType, condition);
}
}
/// <summary>
/// Subscribes to receive published messages of the specified type if
/// they meet the provided condition.
/// </summary>
/// <param name="messageType">The type of message to subscribe to.</param>
/// <param name="condition">The condition under which to receive the message.</param>
public virtual void Subscribe(Type messageType, Predicate <object> condition)
{
MessagingBestPractices.AssertIsValidForPubSub(messageType);
if (Configure.SendOnlyMode)
{
throw new InvalidOperationException("It's not allowed for a send only endpoint to be a subscriber");
}
AssertHasLocalAddress();
if (SubscriptionManager == null)
{
throw new InvalidOperationException("No subscription manager is available");
}
if (TransportDefinition.HasSupportForCentralizedPubSub && !IsAzureTransport())
{
// We are dealing with a brokered transport wired for auto pub/sub.
SubscriptionManager.Subscribe(messageType, null);
return;
}
var addresses = GetAddressForMessageType(messageType);
if (addresses.Count == 0)
{
throw new InvalidOperationException(string.Format("No destination could be found for message type {0}. Check the <MessageEndpointMappings> section of the configuration of this endpoint for an entry either for this specific message type or for its assembly.", messageType));
}
foreach (var destination in addresses)
{
if (Address.Self == destination)
{
throw new InvalidOperationException(string.Format("Message {0} is owned by the same endpoint that you're trying to subscribe", messageType));
}
SubscriptionManager.Subscribe(messageType, destination);
if (SubscriptionPredicatesEvaluator != null)
{
SubscriptionPredicatesEvaluator.AddConditionForSubscriptionToMessageType(messageType, condition);
}
}
}
