public static async Task <IEnumerable <T> > Match <T>(this IPublishedMessageList published, Expression <Func <IPublishedMessage <T>, bool> > filter, TimeSpan?timeout = default(TimeSpan?)) where T : class
{
try
{
var giveUpAt = DateTime.Now + (timeout ?? TimeSpan.FromSeconds(30));
while (DateTime.Now < giveUpAt)
{
if (published.AsQueryable().Where(x => typeof(T).IsAssignableFrom(x.MessageType)).Cast <IPublishedMessage <T> >().Where(filter).Any())
{
return(published.AsQueryable().Where(x => typeof(T).IsAssignableFrom(x.MessageType)).Cast <IPublishedMessage <T> >().Where(filter).Select(x => x.Context.Message).ToList());
}
await Task.Delay(10).ConfigureAwait(false);
}
}
catch (InvalidOperationException)
{
await Task.Delay(10).ConfigureAwait(false);
return(await published.Match <T>(filter, timeout));
}
return(new T[] { });
}
public static IEnumerable <IPublishedMessage <T> > Select <T>(this IPublishedMessageList published, Func <IPublishedMessage <T>, bool> filter)
where T : class
{
return(published.Select <T>()
.Cast <IPublishedMessage <T> >()
.Where(filter));
}
public static async Task <IEnumerable <T> > Any <T>(this IPublishedMessageList published, Expression <Func <IPublishedMessage <T>, bool> > filter, TimeSpan?timeout = default(TimeSpan?)) where T : class
{
return(await published.Match <T>(m => m.MessageType == typeof(T) && filter.Compile()(m)));
}