opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/RecoveryIntegrationSingleNodeTest.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.raft;
   9
  10 import static org.junit.Assert.assertEquals;
  11
  12 import akka.actor.ActorRef;
  13 import akka.persistence.SaveSnapshotSuccess;
  14 import akka.testkit.TestActorRef;
  15 import java.util.List;
  16 import java.util.Map;
  17 import org.junit.Before;
  18 import org.junit.Test;
  19 import org.opendaylight.controller.cluster.raft.persisted.ApplyJournalEntries;
  20 import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
  21 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
  22 import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
  23 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * Recovery Integration Test for single node.
  29  */
  30 public class RecoveryIntegrationSingleNodeTest extends AbstractRaftActorIntegrationTest {
  31
  32     static final Logger LOG = LoggerFactory.getLogger(RecoveryIntegrationSingleNodeTest.class);
  33
  34     @Before
  35     public void setup() {
  36         leaderConfigParams = newLeaderConfigParams();
  37     }
  38
  39
  40     @Test
  41     public void testJournalReplayAfterSnapshotWithSingleNode() {
  42
  43         String persistenceId = factory.generateActorId("singleNode");
  44         TestActorRef<AbstractRaftActorIntegrationTest.TestRaftActor> singleNodeActorRef =
  45                 newTestRaftActor(persistenceId, Map.of(), leaderConfigParams);
  46
  47         waitUntilLeader(singleNodeActorRef);
  48
  49         ActorRef singleNodeCollectorActor = singleNodeActorRef.underlyingActor().collectorActor();
  50         final RaftActorContext singleNodeContext = singleNodeActorRef.underlyingActor().getRaftActorContext();
  51
  52         InMemoryJournal.addWriteMessagesCompleteLatch(persistenceId, 6, ApplyJournalEntries.class);
  53
  54         final MockRaftActorContext.MockPayload payload0 = sendPayloadData(singleNodeActorRef, "zero");
  55         final MockRaftActorContext.MockPayload payload1 = sendPayloadData(singleNodeActorRef, "one");
  56         final MockRaftActorContext.MockPayload payload2 = sendPayloadData(singleNodeActorRef, "two");
  57
  58         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 3);
  59
  60         // this should trigger a snapshot
  61         final MockRaftActorContext.MockPayload payload3 = sendPayloadData(singleNodeActorRef, "three");
  62
  63         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 4);
  64
  65         //add 2 more
  66         final MockRaftActorContext.MockPayload payload4 = sendPayloadData(singleNodeActorRef, "four");
  67         final MockRaftActorContext.MockPayload payload5 = sendPayloadData(singleNodeActorRef, "five");
  68
  69
  70         // Wait for snapshot complete.
  71         MessageCollectorActor.expectFirstMatching(singleNodeCollectorActor, SaveSnapshotSuccess.class);
  72
  73         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 6);
  74
  75         assertEquals("Last applied", 5, singleNodeContext.getLastApplied());
  76
  77         assertEquals("Incorrect State after snapshot success is received ",
  78                 List.of(payload0, payload1, payload2, payload3, payload4, payload5),
  79                 singleNodeActorRef.underlyingActor().getState());
  80
  81         InMemoryJournal.waitForWriteMessagesComplete(persistenceId);
  82
  83         // we get 2 log entries (4 and 5 indexes) and 3 ApplyJournalEntries (for 3, 4, and 5 indexes)
  84         assertEquals(5, InMemoryJournal.get(persistenceId).size());
  85
  86         List<Snapshot> persistedSnapshots = InMemorySnapshotStore.getSnapshots(persistenceId, Snapshot.class);
  87         assertEquals(1, persistedSnapshots.size());
  88
  89         List<Object> snapshottedState = MockRaftActor.fromState(persistedSnapshots.get(0).getState());
  90         assertEquals("Incorrect Snapshot", List.of(payload0, payload1, payload2, payload3), snapshottedState);
  91
  92         //recovery logic starts
  93         killActor(singleNodeActorRef);
  94
  95         singleNodeActorRef = newTestRaftActor(persistenceId, Map.of(), leaderConfigParams);
  96
  97         singleNodeActorRef.underlyingActor().waitForRecoveryComplete();
  98
  99         assertEquals("Incorrect State after Recovery ",
 100                 List.of(payload0, payload1, payload2, payload3, payload4, payload5),
 101                 singleNodeActorRef.underlyingActor().getState());
 102     }
 103 }