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.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() throws Exception {
  42
  43         String persistenceId = factory.generateActorId("singleNode");
  44         TestActorRef<AbstractRaftActorIntegrationTest.TestRaftActor> singleNodeActorRef =
  45                 newTestRaftActor(persistenceId, ImmutableMap.<String, String>builder().build(), leaderConfigParams);
  46
  47         waitUntilLeader(singleNodeActorRef);
  48
  49         ActorRef singleNodeCollectorActor = singleNodeActorRef.underlyingActor().collectorActor();
  50         final RaftActorContext singleNodeContext = singleNodeActorRef.underlyingActor().getRaftActorContext();
  51
  52
  53         final MockRaftActorContext.MockPayload payload0 = sendPayloadData(singleNodeActorRef, "zero");
  54         final MockRaftActorContext.MockPayload payload1 = sendPayloadData(singleNodeActorRef, "one");
  55         final MockRaftActorContext.MockPayload payload2 = sendPayloadData(singleNodeActorRef, "two");
  56
  57         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 3);
  58
  59         // this should trigger a snapshot
  60         final MockRaftActorContext.MockPayload payload3 = sendPayloadData(singleNodeActorRef, "three");
  61
  62         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 4);
  63
  64         //add 2 more
  65         final MockRaftActorContext.MockPayload payload4 = sendPayloadData(singleNodeActorRef, "four");
  66         final MockRaftActorContext.MockPayload payload5 = sendPayloadData(singleNodeActorRef, "five");
  67
  68
  69         // Wait for snapshot complete.
  70         MessageCollectorActor.expectFirstMatching(singleNodeCollectorActor, SaveSnapshotSuccess.class);
  71
  72         MessageCollectorActor.expectMatching(singleNodeCollectorActor, ApplyJournalEntries.class, 6);
  73
  74         assertEquals("Last applied", 5, singleNodeContext.getLastApplied());
  75
  76         assertEquals("Incorrect State after snapshot success is received ", Lists.newArrayList(payload0, payload1,
  77                 payload2, payload3, payload4, payload5), singleNodeActorRef.underlyingActor().getState());
  78
  79         // we get 2 log entries (4 and 5 indexes) and 3 ApplyJournalEntries (for 3, 4, and 5 indexes)
  80         assertEquals(5, InMemoryJournal.get(persistenceId).size());
  81
  82         List<Snapshot> persistedSnapshots = InMemorySnapshotStore.getSnapshots(persistenceId, Snapshot.class);
  83         assertEquals(1, persistedSnapshots.size());
  84
  85         @SuppressWarnings("unchecked")
  86         List<Object> snapshottedState = (List<Object>)MockRaftActor.toObject(persistedSnapshots.get(0).getState());
  87         assertEquals("Incorrect Snapshot", Lists.newArrayList(payload0, payload1, payload2, payload3),
  88                 snapshottedState);
  89
  90         //recovery logic starts
  91         killActor(singleNodeActorRef);
  92
  93         singleNodeActorRef = newTestRaftActor(persistenceId,
  94                 ImmutableMap.<String, String>builder().build(), leaderConfigParams);
  95
  96         singleNodeActorRef.underlyingActor().waitForRecoveryComplete();
  97
  98         assertEquals("Incorrect State after Recovery ", Lists.newArrayList(payload0, payload1, payload2, payload3,
  99                 payload4, payload5), singleNodeActorRef.underlyingActor().getState());
 100
 101     }
 102 }