-
Notifications
You must be signed in to change notification settings - Fork 0
/
PersistentActorFailureExample.scala
53 lines (39 loc) · 1.34 KB
/
PersistentActorFailureExample.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
package com.github.daggerok.akka.persistence
import akka.actor._
import akka.persistence._
object PersistentActorFailureExample extends App {
class ExamplePersistentActor extends PersistentActor {
override def persistenceId = "failure-example-persistent-actor-id"
var received: List[String] = Nil // state
def receiveCommand: Receive = {
case "print" => println(s"received ${received.reverse}")
case "boom" => throw new Exception("boom")
case payload: String =>
persist(payload) { p => received = p :: received }
}
def receiveRecover: Receive = {
case s: String => received = s :: received
}
}
val system = ActorSystem("example")
val persistentActor = system.actorOf(Props(classOf[ExamplePersistentActor]), "persistentActor-2")
persistentActor ! "a"
persistentActor ! "print"
persistentActor ! "boom" // restart and recovery
persistentActor ! "print"
persistentActor ! "b"
persistentActor ! "print"
persistentActor ! "c"
persistentActor ! "print"
// Will print in a first run (i.e. with empty journal):
// received List(a)
// received List(a, b)
// received List(a, b, c)
// Will print in a second run:
// received List(a, b, c, a)
// received List(a, b, c, a, b)
// received List(a, b, c, a, b, c)
// etc ...
Thread.sleep(10000)
system.terminate()
}