public MessageSystem(
IMessageFactory <M> messageFactory,
IMessagePatternFactory <P> patternFactory,
ILogger logger
)
{
MessageFactory = messageFactory;
PatternFactory = patternFactory;
Logger = logger;
}
public async Task <IEnumerable <MatchingActor> > GetMatchingActorsAsync(M message, IMessagePatternFactory <P> messagePatternFactory)
{
var replicator = DistributedData.Get(ActorSystem).Replicator;
GetKeysIdsResult keys = await replicator.Ask <GetKeysIdsResult>(Dsl.GetKeyIds);
var matchingActors = new List <MatchingActor>();
foreach (var node in keys.Keys)
{
var setKey = new LWWRegisterKey <ActorProps[]>(node);
var getResponse = await replicator.Ask <IGetResponse>(Dsl.Get(setKey, ReadLocal.Instance));
if (!getResponse.IsSuccessful)
{
throw new Exception($"cannot get message patterns for node {node}");
}
var actorPropsList = getResponse.Get(setKey).Value;
foreach (var actorProps in actorPropsList)
{
var path = actorProps.Path;
var matchingPatterns = actorProps.Patterns.Where(pattern => pattern.Match(message));
int matchingPatternsCount = matchingPatterns.Count();
if (matchingPatternsCount > 0)
{
var matchingPattern = matchingPatterns.First();
if (matchingPatternsCount > 1)
{
Logger.Warning("For actor {0}, found {1} patterns matching message {2}. Taking first one = {3}", path, matchingPatternsCount, message, matchingPattern);
}
matchingActors.Add(
new MatchingActor
{
Path = path,
IsSecondary = matchingPattern.IsSecondary,
MatchingScore = matchingPattern.Conjuncts.Length,
MistrustFactor = actorProps.MistrustFactor
});
}
}
}
return(matchingActors);
}
