public bool UnSubscribeToQueueDistributionChangeEvents(IStreamQueueBalanceListener observer)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
lock (queueBalanceListeners)
{
return(queueBalanceListeners.Contains(observer) && queueBalanceListeners.Remove(observer));
}
}
/// <inheritdoc/>
public bool UnSubscribeFromQueueDistributionChangeEvents(IStreamQueueBalanceListener observer)
{
if (observer == null)
{
throw new ArgumentNullException(nameof(observer));
}
lock (this.queueBalanceListeners)
{
return(this.queueBalanceListeners.Remove(observer));
}
}
public bool UnSubscribeToQueueDistributionChangeEvents(IStreamQueueBalanceListener observer)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
lock (queueBalanceListeners)
{
return queueBalanceListeners.Contains(observer) && queueBalanceListeners.Remove(observer);
}
}
public bool SubscribeToQueueDistributionChangeEvents(IStreamQueueBalanceListener observer)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
lock (queueBalanceListeners)
{
if (queueBalanceListeners.Contains(observer)) return false;
queueBalanceListeners.Add(observer);
return true;
}
}
/// <inheritdoc/>
public bool SubscribeToQueueDistributionChangeEvents(IStreamQueueBalanceListener observer)
{
if (observer == null)
{
throw new ArgumentNullException(nameof(observer));
}
lock (this.queueBalanceListeners)
{
if (this.queueBalanceListeners.Contains(observer))
{
return(false);
}
this.queueBalanceListeners.Add(observer);
return(true);
}
}
public bool UnSubscribeFromQueueDistributionChangeEvents(IStreamQueueBalanceListener observer)
{
//no op operation
return(true);
}