pekko/akka-distributed-data/src/test/scala/akka/cluster/ddata/WriteAggregatorSpec.scala

245 lines
8.2 KiB
Scala

/**
* Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
*/
package akka.cluster.ddata
import scala.concurrent.duration._
import akka.actor.Actor
import akka.actor.ActorRef
import akka.actor.ActorSelection
import akka.actor.ActorSystem
import akka.actor.Address
import akka.actor.Props
import akka.testkit._
import akka.cluster.ddata.Replicator.Internal._
import akka.cluster.ddata.Replicator._
import akka.remote.RARP
import scala.concurrent.Future
object WriteAggregatorSpec {
val key = GSetKey[String]("a")
def writeAggregatorProps(data: GSet[String], consistency: Replicator.WriteConsistency,
probes: Map[Address, ActorRef], nodes: Set[Address], unreachable: Set[Address], replyTo: ActorRef, durable: Boolean): Props =
Props(new TestWriteAggregator(data, consistency, probes, nodes, unreachable, replyTo, durable))
class TestWriteAggregator(data: GSet[String], consistency: Replicator.WriteConsistency,
probes: Map[Address, ActorRef], nodes: Set[Address], unreachable: Set[Address], replyTo: ActorRef, durable: Boolean)
extends WriteAggregator(key, DataEnvelope(data), consistency, None, nodes, unreachable, replyTo, durable) {
override def replica(address: Address): ActorSelection =
context.actorSelection(probes(address).path)
override def senderAddress(): Address =
probes.find { case (a, r) r == sender() }.get._1
}
def writeAckAdapterProps(replica: ActorRef): Props =
Props(new WriteAckAdapter(replica))
class WriteAckAdapter(replica: ActorRef) extends Actor {
var replicator: Option[ActorRef] = None
def receive = {
case WriteAck
replicator.foreach(_ ! WriteAck)
case WriteNack
replicator.foreach(_ ! WriteNack)
case msg
replicator = Some(sender())
replica ! msg
}
}
object TestMock {
def apply()(implicit system: ActorSystem) = new TestMock(system)
}
class TestMock(_application: ActorSystem) extends TestProbe(_application) {
val writeAckAdapter = system.actorOf(WriteAggregatorSpec.writeAckAdapterProps(this.ref))
}
}
class WriteAggregatorSpec extends AkkaSpec(s"""
akka.actor.provider = "cluster"
akka.remote.netty.tcp.port = 0
akka.remote.artery.canonical.port = 0
akka.cluster.distributed-data.durable.lmdb {
dir = target/WriteAggregatorSpec-${System.currentTimeMillis}-ddata
map-size = 10 MiB
}
""")
with ImplicitSender {
import WriteAggregatorSpec._
val protocol =
if (RARP(system).provider.remoteSettings.Artery.Enabled) "akka"
else "akka.tcp"
val nodeA = Address(protocol, "Sys", "a", 2552)
val nodeB = nodeA.copy(host = Some("b"))
val nodeC = nodeA.copy(host = Some("c"))
val nodeD = nodeA.copy(host = Some("d"))
// 4 replicas + the local => 5
val nodes = Set(nodeA, nodeB, nodeC, nodeD)
val data = GSet.empty + "A" + "B"
val timeout = 3.seconds.dilated
val writeThree = WriteTo(3, timeout)
val writeMajority = WriteMajority(timeout)
def probes(probe: ActorRef): Map[Address, ActorRef] =
nodes.toSeq.map(_ system.actorOf(WriteAggregatorSpec.writeAckAdapterProps(probe))).toMap
/**
* Create a tuple for each node with the WriteAckAdapter and the TestProbe
*/
def probes(): Map[Address, TestMock] = {
val probe = TestProbe()
nodes.toSeq.map(_ TestMock()).toMap
}
"WriteAggregator" must {
"send to at least N/2+1 replicas when WriteMajority" in {
val probe = TestProbe()
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeMajority, probes(probe.ref), nodes, Set.empty, testActor, durable = false))
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
expectMsg(UpdateSuccess(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
"send to more when no immediate reply" in {
val testProbes = probes()
val testProbeRefs = testProbes.map { case (a, tm) a tm.writeAckAdapter }
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeMajority, testProbeRefs, nodes, Set(nodeC, nodeD), testActor, durable = false))
testProbes(nodeA).expectMsgType[Write]
// no reply
testProbes(nodeB).expectMsgType[Write]
testProbes(nodeB).lastSender ! WriteAck
// Make sure that unreachable nodes do not get a message until 1/5 of the time the reachable nodes did not answer
val t = timeout / 5 - 50.milliseconds.dilated
import system.dispatcher
Future.sequence {
Seq(
Future { testProbes(nodeC).expectNoMsg(t) },
Future { testProbes(nodeD).expectNoMsg(t) }
)
}.futureValue
testProbes(nodeC).expectMsgType[Write]
testProbes(nodeC).lastSender ! WriteAck
testProbes(nodeD).expectMsgType[Write]
testProbes(nodeD).lastSender ! WriteAck
expectMsg(UpdateSuccess(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
"timeout when less than required acks" in {
val probe = TestProbe()
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeMajority, probes(probe.ref), nodes, Set.empty, testActor, durable = false))
probe.expectMsgType[Write]
// no reply
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
probe.expectMsgType[Write]
// no reply
probe.expectMsgType[Write]
// no reply
expectMsg(UpdateTimeout(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
}
"Durable WriteAggregator" must {
"not reply before local confirmation" in {
val probe = TestProbe()
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeThree, probes(probe.ref), nodes, Set.empty, testActor, durable = true))
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
expectNoMsg(200.millis)
// the local write
aggr ! UpdateSuccess(WriteAggregatorSpec.key, None)
expectMsg(UpdateSuccess(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
"tolerate WriteNack if enough WriteAck" in {
val probe = TestProbe()
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeThree, probes(probe.ref), nodes, Set.empty, testActor, durable = true))
aggr ! UpdateSuccess(WriteAggregatorSpec.key, None) // the local write
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
probe.expectMsgType[Write]
probe.lastSender ! WriteNack
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
expectMsg(UpdateSuccess(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
"reply with StoreFailure when too many nacks" in {
val probe = TestProbe()
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeMajority, probes(probe.ref), nodes, Set.empty, testActor, durable = true))
probe.expectMsgType[Write]
probe.lastSender ! WriteNack
aggr ! UpdateSuccess(WriteAggregatorSpec.key, None) // the local write
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
probe.expectMsgType[Write]
probe.lastSender ! WriteNack
probe.expectMsgType[Write]
probe.lastSender ! WriteNack
expectMsg(StoreFailure(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
"timeout when less than required acks" in {
val probe = TestProbe()
val aggr = system.actorOf(WriteAggregatorSpec.writeAggregatorProps(
data, writeMajority, probes(probe.ref), nodes, Set.empty, testActor, durable = true))
probe.expectMsgType[Write]
// no reply
probe.expectMsgType[Write]
probe.lastSender ! WriteAck
probe.expectMsgType[Write]
probe.lastSender ! WriteNack
probe.expectMsgType[Write]
probe.lastSender ! WriteNack
expectMsg(UpdateTimeout(WriteAggregatorSpec.key, None))
watch(aggr)
expectTerminated(aggr)
}
}
}