Slick3 with SQLite - autocommit seems to not be working - scala

Question

I'm trying to write some basic queries with Slick for SQLite database
Here is my code:
class MigrationLog(name: String) {
val migrationEvents = TableQuery[MigrationEventTable]
lazy val db: Future[SQLiteDriver.backend.DatabaseDef] = {
val db = Database.forURL(s"jdbc:sqlite:$name.db", driver = "org.sqlite.JDBC")
val setup = DBIO.seq(migrationEvents.schema.create)
val createFuture = for {
tables <- db.run(MTable.getTables)
createResult <- if (tables.length == 0) db.run(setup) else Future.successful()
} yield createResult
createFuture.map(_ => db)
}
val addEvent: (String, String) => Future[String] = (aggregateId, eventType) => {
val id = java.util.UUID.randomUUID().toString
val command = DBIO.seq(migrationEvents += (id, aggregateId, None, eventType, "CREATED", System.currentTimeMillis, None))
db.flatMap(_.run(command).map(_ => id))
}
val eventSubmitted: (String, String) => Future[Unit] = (id, batchId) => {
val q = for { e <- migrationEvents if e.id === id } yield (e.batchId, e.status, e.updatedAt)
val updateAction = q.update(Some(batchId), "SUBMITTED", Some(System.currentTimeMillis))
db.map(_.run(updateAction))
}
val eventMigrationCompleted: (String, String, String) => Future[Unit] = (batchId, id, status) => {
val q = for { e <- migrationEvents if e.batchId === batchId && e.id === id} yield (e.status, e.updatedAt)
val updateAction = q.update(status, Some(System.currentTimeMillis))
db.map(_.run(updateAction))
}
val allEvents = () => {
db.flatMap(_.run(migrationEvents.result))
}
}
Here is how I'm using it:
val migrationLog = MigrationLog("test")
val events = for {
id <- migrationLog.addEvent("aggregateUserId", "userAccessControl")
_ <- migrationLog.eventSubmitted(id, "batchID_generated_from_idam")
_ <- migrationLog.eventMigrationCompleted("batchID_generated_from_idam", id, "Successful")
events <- migrationLog.allEvents()
} yield events
events.map(_.foreach(event => event match {
case (id, aggregateId, batchId, eventType, status, submitted, updatedAt) => println(s"$id $aggregateId $batchId $eventType $status $submitted $updatedAt")
}))
The idea is to add event first, then update it with batchId (which also updates status) and then update the status when the job is done. events should contain events with status Successful.
What happens is that after running this code it prints events with status SUBMITTED. If I wait a while and do the same allEvents query or just go and check the db from command line using sqlite3 then it's updated correctly.
I'm properly waiting for futures to be resolved before starting the next operation, auto-commit should be enabled by default.
Am I missing something?

Answer 1

Turns out the problem was with db.map(_.run(updateAction)) which returns Future[Future[Int]] which means that the command was not finished by the time I tried to run another query.
Replacing it with db.flatMap(_.run(updateAction)) solved the issue.