public override void Register <TE>(Func <ReadSideProcessor <TE> > processorFactory)
{
if (!Config.Role.ForAll(Cluster.Get(System).SelfRoles.Contains))
{
return;
}
ReadSideProcessor <TE> dummyProcessor;
try
{
dummyProcessor = processorFactory();
}
catch (Exception)
{
throw new InvalidOperationException(
"Cannot create instance of ReadSideProcessor"
);
}
var readSideName = (Name.HasValue ? (Name.Value + "-") : "") + dummyProcessor.ReadSideName;
var encodedReadSideName = WebUtility.UrlEncode(readSideName);
var tags = dummyProcessor.AggregateTags;
var entityIds = tags.Select(x => x.Tag);
var globalPrepareTask = ClusterStartupTask.Apply(
System,
$"readSideGlobalPrepare-{encodedReadSideName}",
() => processorFactory().BuildHandler().GlobalPrepare(),
Config.GlobalPrepareTimeout,
Config.Role,
Config.MinBackoff,
Config.MaxBackoff,
Config.RandomBackoffFactor
);
var readSideProps = ReadSideActor.Props(
Config,
globalPrepareTask,
Registry.EventStream <TE>,
processorFactory
);
var shardingSettings = ClusterShardingSettings.Create(System).WithRole(Config.Role.OrElse(""));
new ClusterDistributionExtensionProvider.ClusterDistribution(System).Start(
readSideName,
readSideProps,
entityIds.ToArray(),
new ClusterDistributionSettings(System, shardingSettings)
);
}
public static Props Props <TE>(
ReadSideConfig config,
ClusterStartupTask globalPrepareTask,
Func <AggregateEventTag, Offset, Source <EventStreamElement <TE>, NotUsed> > eventStreamFactory,
Func <ReadSideProcessor <TE> > processor
) where TE : AggregateEvent <TE>
{
return(Akka.Actor.Props.Create(
() => new ReadSideActor <TE>(
config,
globalPrepareTask,
eventStreamFactory,
processor
)
));
}
