I am not aware of currentEventsByPersistenceId, so started using
eventsByPersistenceId. println to check if execution is reaching to end or
not, yes it is printing all the events but `finalResult` is not being
returned.
On Sunday, December 4, 2016 at 10:25:34 PM UTC+5:30, Justin du coeur wrote:
>
> Hmm. You're intentionally not using currentEventsByPersistenceId()? And
> your println() is showing 10 results?
>
> On Sun, Dec 4, 2016 at 11:23 AM, Srinivas <chu...@gmail.com <javascript:>>
> wrote:
>
>> I am trying to get list of persistent events and send it as response(
>> Action.async). But I am not able to convert PersistenceQuery results to
>> Future object. Here is the code
>>
>> val queries =
>> PersistenceQuery(actorSystem).readJournalFor[CassandraReadJournal](CassandraReadJournal.Identifier)
>> val source: Source[EventEnvelope, NotUsed] =
>> queries.eventsByPersistenceId("MYID", 0, Long.MaxValue)
>> val mappedSource: Source[JsValue, NotUsed] = source.mapAsync(1) { e =>
>> e.event match {
>> case l: String =>
>> Future(Json.parse(l))
>> }
>> }
>> val finalResult: Future[List[JsValue]] =
>> mappedSource.take(10).runFold(List[JsValue]())((a, b) => {
>> println(a)
>> a :+ b
>> })
>> finalResult
>>
>> I am able to see prints within runFold, but finalResult was never
>> returned. I even tried to Await, even after waiting for minutes, it
>> never returned. This finalResult shows all the user activity wanted to
>> send it as response as Action.async. Please let me know what is the way
>> to convert Source to Future object
>>
>> --
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>
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