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 com.google.common.collect.ImmutableMap;
  16 import com.google.common.collect.Lists;
  17 import java.util.List;
  18 import org.junit.Before;
  19 import org.junit.Test;
  20 import org.opendaylight.controller.cluster.raft.persisted.ApplyJournalEntries;
  21 import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
  22 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
  23 import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
  24 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * Recovery Integration Test for single node.
  30  */
  31 public class RecoveryIntegrationSingleNodeTest extends AbstractRaftActorIntegrationTest {
  32
  33     static final Logger LOG = LoggerFactory.getLogger(RecoveryIntegrationSingleNodeTest.class);
  34
  35     @Before
  36     public void setup() {
  37         leaderConfigParams = newLeaderConfigParams();
  38     }
  39
  40
  41     @Test
  42     public void testJournalReplayAfterSnapshotWithSingleNode() {
  43
  44         String persistenceId = factory.generateActorId("singleNode");
  45         TestActorRef<AbstractRaftActorIntegrationTest.TestRaftActor> singleNodeActorRef =
  46                 newTestRaftActor(persistenceId, ImmutableMap.<String, String>builder().build(), leaderConfigParams);
  47
  48         waitUntilLeader(singleNodeActorRef);
  49
  50         ActorRef singleNodeCollectorActor = singleNodeActorRef.underlyingActor().collectorActor();
  51         final RaftActorContext singleNodeContext = singleNodeActorRef.underlyingActor().getRaftActorContext();
  52
  53         InMemoryJournal.addWriteMessagesCompleteLatch(persistenceId, 6, ApplyJournalEntries.class);
  54
  55         final MockRaftActorContext.MockPayload payload0 = sendPayloadData(singleNodeActorRef, "zero");
  56         final MockRaftActorContext.MockPayload payload1 = sendPayloadData(singleNodeActorRef, "one");
  57         final MockRaftActorContext.MockPayload payload2 = sendPayloadData(singleNodeActorRef, "two");
  58
  59         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 3);
  60
  61         // this should trigger a snapshot
  62         final MockRaftActorContext.MockPayload payload3 = sendPayloadData(singleNodeActorRef, "three");
  63
  64         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 4);
  65
  66         //add 2 more
  67         final MockRaftActorContext.MockPayload payload4 = sendPayloadData(singleNodeActorRef, "four");
  68         final MockRaftActorContext.MockPayload payload5 = sendPayloadData(singleNodeActorRef, "five");
  69
  70
  71         // Wait for snapshot complete.
  72         MessageCollectorActor.expectFirstMatching(singleNodeCollectorActor, SaveSnapshotSuccess.class);
  73
  74         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 6);
  75
  76         assertEquals("Last applied", 5, singleNodeContext.getLastApplied());
  77
  78         assertEquals("Incorrect State after snapshot success is received ", Lists.newArrayList(payload0, payload1,
  79                 payload2, payload3, payload4, payload5), 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", Lists.newArrayList(payload0, payload1, payload2, payload3),
  91                 snapshottedState);
  92
  93         //recovery logic starts
  94         killActor(singleNodeActorRef);
  95
  96         singleNodeActorRef = newTestRaftActor(persistenceId,
  97                 ImmutableMap.<String, String>builder().build(), leaderConfigParams);
  98
  99         singleNodeActorRef.underlyingActor().waitForRecoveryComplete();
 100
 101         assertEquals("Incorrect State after Recovery ", Lists.newArrayList(payload0, payload1, payload2, payload3,
 102                 payload4, payload5), singleNodeActorRef.underlyingActor().getState());
 103
 104     }
 105 }