/// <summary>
/// Returns a cloned instance with the same subscribers as the original, minus the new <paramref name="subscriber"/>
/// </summary>
/// <param name="current"></param>
/// <param name="subscriber"></param>
/// <returns></returns>
public static BrokerServiceState RemoveSubscriber(BrokerServiceState current, Reference subscriber)
{
if (subscriber == null)
{
throw new ArgumentNullException(nameof(subscriber));
}
return(RemoveSubscriber(current, subscriber.ServiceOrActorReference));
}
/// <summary>
/// Returns a cloned instance with the same subscribers as the original, plus the new <paramref name="subscriber"/>
/// </summary>
/// <param name="current"></param>
/// <param name="subscriber"></param>
/// <returns></returns>
public static BrokerServiceState AddSubscriber(BrokerServiceState current, Reference subscriber)
{
if (current == null)
{
throw new ArgumentNullException(nameof(current));
}
if (subscriber == null)
{
throw new ArgumentNullException(nameof(subscriber));
}
if (current.Subscribers.Any(s => s.ServiceOrActorReference.Equals(subscriber.ServiceOrActorReference)))
{
return(current);
}
var clone = new BrokerServiceState(current.MessageTypeName, ((ImmutableList <Reference>)current.Subscribers).Add(subscriber));
return(clone);
}
/// <summary>
/// Returns a cloned instance with the same subscribers as the original, minus the new <paramref name="subscriber"/>
/// </summary>
/// <param name="current"></param>
/// <param name="subscriber"></param>
/// <returns></returns>
public static BrokerServiceState RemoveSubscriber(BrokerServiceState current, ReferenceWrapper subscriber)
{
if (current == null)
{
throw new ArgumentNullException(nameof(current));
}
if (subscriber == null)
{
throw new ArgumentNullException(nameof(subscriber));
}
if (current.Subscribers.All(s => s.ServiceOrActorReference != subscriber))
{
return(current);
}
var clone = new BrokerServiceState(current.MessageTypeName, ((ImmutableList <Reference>)current.Subscribers).RemoveAll(s => s.ServiceOrActorReference == subscriber));
return(clone);
}