Yup, that's one way to do it - cheers!
On Thu, Oct 13, 2016 at 10:07 PM, Spencer Judge <sushisou...@gmail.com>
wrote:
> I can answered my own question here. It pretty much just came down to my
> lack of knowledge around the streams API, which I hadn't used yet. Changing
> the test to this works perfectly:
>
> test("test journal backwards compatibility", EndToEndTest) {
> val readJournal =
> PersistenceQuery(system).readJournalFor[LeveldbReadJournal](
> LeveldbReadJournal.Identifier)
> implicit val mat = ActorMaterializer()(system)
> val allPersistenceIDs = readJournal.currentPersistenceIds().map { pid =>
> val eventsForID = readJournal.currentEventsByPersistenceId(pid)
> val res = eventsForID.runWith(Sink.foreach { e => e.event })
> // Simply waiting for the result will blow up with an exception if we
> couldn't deserialize.
> Await.result(res, 300.millis)
> }
> Await.result(allPersistenceIDs.runWith(Sink.seq), 5.seconds)
> }
>
>
>
> On Wednesday, October 12, 2016 at 4:43:39 PM UTC-7, Spencer Judge wrote:
>>
>> Hello all,
>>
>> In order to test that no unaccounted-for serialization changes have
>> happen before we deploy our service, I need some way for us to *attempt* to
>> deserialize all currently stored events in our event journal and snapshots.
>>
>> Currently, we just use the local leveldb plugin with local snapshot
>> storage, which has been totally adequate for our purpose.
>>
>> I'm trying to do this by using a PersistenceQuery, but I'm totally unable
>> to get the persistence query to actually... return anything. My code is
>> pasted below. The things hidden behind the "PersistentTestKit" object just
>> handle some data cleaning before the tests, etc, and when I call
>> getNewConfig, that's just modifying the akka config to use the location of
>> the stored journal/snapshots we want to test against.
>>
>> As you can see, I added a simple persistent actor just to test if I could
>> get the query to return events from something not even related to the
>> existing data, and even it doesn't show up in the query (nothing does).
>> This is the output:
>>
>> Recover persisted a thing! // As many times as I've already run the
>> test, as expected.
>> Recover RecoveryCompleted
>> Persisting a thing!
>> Found persistence IDs:
>> Found persistence IDs:
>> Found persistence IDs:
>>
>> Clearly, I'm missing something, but I'm not sure what. If I inspect the
>> config given to the system, everything looks right. The storage locations
>> are right, the plugins are right, etc. Can someone point me in the right
>> direction?
>>
>> Alternatively, is there a better way to do this? I will happily do
>> something else entirely if PersistenceQuery isn't the right fit.
>>
>>
>> object PersistCompatIT {
>> val persistBackupLoc = ".exported_state"
>> val dumpFile = new File(PersistentTestKit.findRoot(),
>> persistBackupLoc).getAbsoluteFile
>> val absPathToBackup = dumpFile.toPath.toString
>> val systemConfig = PersistentTestKit.getNewConfig(true, (cfg) => {
>> cfg.withValue("akka.persistence.snapshot-store.local.dir",
>> ConfigValueFactory
>>
>> .fromAnyRef(s"$absPathToBackup/boxsrv-snapshots/local-snapshots"))
>> .withValue("akka.persistence.journal.leveldb.dir",
>>
>> ConfigValueFactory.fromAnyRef(s"$absPathToBackup/boxsrv-journal/leveldb-journal"))
>> })
>>
>> val lamePersistActorID = "imastupidpersistactor"
>> class LamePersistActor extends PersistentActor {
>> override def receiveRecover: Receive = {
>> case m: Any => println(s"Recover $m")
>> }
>> override def receiveCommand: Receive = {
>> case 'whoapersist =>
>> println("Persisting a thing!")
>> persist("persisted a thing!") { _ => () }
>> case m: Any => println(s"Command $m")
>> }
>> override def persistenceId: String = lamePersistActorID
>> }
>> }
>>
>> /**
>> * Tests backwards compatibility for journaling / snapshots
>> */
>> class PersistCompatIT extends TestKit(ActorSystem("PersistCompatSys",
>>
>> PersistCompatIT.systemConfig)) with FunSuiteLike {
>>
>> test("test journal backwards compatibility", EndToEndTest) {
>> val lameActor = system.actorOf(Props(new LamePersistActor))
>> lameActor ! 'whoapersist
>> Thread.sleep(1000)
>> val readJournal =
>> PersistenceQuery(system).readJournalFor[LeveldbReadJournal](
>> LeveldbReadJournal.Identifier)
>> implicit val mat = ActorMaterializer()(system)
>> for (i <- 1 to 3) {
>> Thread.sleep(2000)
>> val allPersistenceIDs = readJournal.allPersistenceIds()
>> val dafuq =
>> readJournal.eventsByPersistenceId(PersistCompatIT.lamePersistActorID)
>> println("Found persistence IDs:")
>> allPersistenceIDs.map { e =>
>> println(e)
>> e
>> }
>> dafuq.map { e =>
>> println(e.event)
>> e
>> }
>> }
>> }
>> }
>>
>>
>> --
> >>>>>>>>>> Read the docs: http://akka.io/docs/
> >>>>>>>>>> Check the FAQ: http://doc.akka.io/docs/akka/
> current/additional/faq.html
> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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--
Akka Team
Lightbend <http://www.lightbend.com/> - Reactive apps on the JVM
Twitter: @akkateam
--
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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