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 import akka.actor.ActorRef;
  12 import akka.persistence.SaveSnapshotSuccess;
  13 import akka.testkit.TestActorRef;
  14 import com.google.common.collect.ImmutableMap;
  15 import com.google.common.collect.Lists;
  16 import java.util.List;
  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.utils.InMemoryJournal;
  21 import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
  22 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * Recovery Integration Test for single node
  28  */
  29 public class RecoveryIntegrationSingleNodeTest extends AbstractRaftActorIntegrationTest {
  30
  31     static final Logger LOG = LoggerFactory.getLogger(RecoveryIntegrationSingleNodeTest.class);
  32
  33     @Before
  34     public void setup() {
  35         leaderConfigParams = newLeaderConfigParams();
  36     }
  37
  38
  39     @Test
  40     public void testJournalReplayAfterSnapshotWithSingleNode() throws Exception {
  41
  42         String persistenceId = factory.generateActorId("singleNode");
  43         TestActorRef<AbstractRaftActorIntegrationTest.TestRaftActor> singleNodeActorRef = newTestRaftActor(persistenceId,
  44                 ImmutableMap.<String, String>builder().build(), leaderConfigParams);
  45
  46         waitUntilLeader(singleNodeActorRef);
  47
  48         ActorRef singleNodeCollectorActor = singleNodeActorRef.underlyingActor().collectorActor();
  49         RaftActorContext singleNodeContext = singleNodeActorRef.underlyingActor().getRaftActorContext();
  50
  51
  52         MockRaftActorContext.MockPayload payload0 = sendPayloadData(singleNodeActorRef, "zero");
  53         MockRaftActorContext.MockPayload payload1 = sendPayloadData(singleNodeActorRef, "one");
  54         MockRaftActorContext.MockPayload payload2 = sendPayloadData(singleNodeActorRef, "two");
  55
  56         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 3);
  57
  58         // this should trigger a snapshot
  59         MockRaftActorContext.MockPayload payload3 = sendPayloadData(singleNodeActorRef, "three");
  60
  61         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 4);
  62
  63         //add 2 more
  64         MockRaftActorContext.MockPayload payload4 = sendPayloadData(singleNodeActorRef, "four");
  65         MockRaftActorContext.MockPayload payload5 = sendPayloadData(singleNodeActorRef, "five");
  66
  67
  68         // Wait for snapshot complete.
  69         MessageCollectorActor.expectFirstMatching(singleNodeCollectorActor, SaveSnapshotSuccess.class);
  70
  71         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 6);
  72
  73         assertEquals("Last applied", 5, singleNodeContext.getLastApplied());
  74
  75         assertEquals("Incorrect State after snapshot success is received ",
  76                 Lists.newArrayList(payload0, payload1, payload2, payload3, payload4, payload5), singleNodeActorRef.underlyingActor().getState());
  77
  78         // we get 2 log entries (4 and 5 indexes) and 3 ApplyJournalEntries (for 3, 4, and 5 indexes)
  79         assertEquals(5, InMemoryJournal.get(persistenceId).size());
  80
  81         List<Snapshot> persistedSnapshots = InMemorySnapshotStore.getSnapshots(persistenceId, Snapshot.class);
  82         assertEquals(1, persistedSnapshots.size());
  83
  84         List<Object> snapshottedState = (List<Object>)MockRaftActor.toObject(persistedSnapshots.get(0).getState());
  85         assertEquals("Incorrect Snapshot", Lists.newArrayList(payload0, payload1, payload2, payload3), snapshottedState);
  86
  87         //recovery logic starts
  88         killActor(singleNodeActorRef);
  89
  90         singleNodeActorRef = newTestRaftActor(persistenceId,
  91                 ImmutableMap.<String, String>builder().build(), leaderConfigParams);
  92
  93         singleNodeActorRef.underlyingActor().waitForRecoveryComplete();
  94
  95         assertEquals("Incorrect State after Recovery ",
  96                 Lists.newArrayList(payload0, payload1, payload2, payload3, payload4, payload5), singleNodeActorRef.underlyingActor().getState());
  97
  98     }
  99 }