import akka.actor.ActorRef;
import akka.actor.Props;
import akka.testkit.JavaTestKit;
+import akka.util.Timeout;
+import com.google.protobuf.ByteString;
import junit.framework.Assert;
import org.junit.Test;
import org.opendaylight.controller.cluster.raft.DefaultConfigParamsImpl;
import org.opendaylight.controller.cluster.raft.RaftActorContext;
import org.opendaylight.controller.cluster.raft.RaftState;
import org.opendaylight.controller.cluster.raft.ReplicatedLogEntry;
+import org.opendaylight.controller.cluster.raft.base.messages.ApplySnapshot;
import org.opendaylight.controller.cluster.raft.base.messages.ElectionTimeout;
import org.opendaylight.controller.cluster.raft.messages.AppendEntries;
import org.opendaylight.controller.cluster.raft.messages.AppendEntriesReply;
+import org.opendaylight.controller.cluster.raft.messages.InstallSnapshot;
+import org.opendaylight.controller.cluster.raft.messages.InstallSnapshotReply;
import org.opendaylight.controller.cluster.raft.messages.RequestVote;
import org.opendaylight.controller.cluster.raft.messages.RequestVoteReply;
import org.opendaylight.controller.cluster.raft.utils.DoNothingActor;
-
+import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
+import scala.concurrent.Await;
+import scala.concurrent.Future;
+import scala.concurrent.duration.Duration;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import static akka.pattern.Patterns.ask;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
public class FollowerTest extends AbstractRaftActorBehaviorTest {
return new Follower(actorContext);
}
- @Override protected RaftActorContext createActorContext() {
- return new MockRaftActorContext("test", getSystem(), followerActor);
+ @Override protected RaftActorContext createActorContext() {
+ return createActorContext(followerActor);
+ }
+
+ protected RaftActorContext createActorContext(ActorRef actorRef){
+ return new MockRaftActorContext("test", getSystem(), actorRef);
}
@Test
createActorContext();
context.setLastApplied(100);
- setLastLogEntry((MockRaftActorContext) context, 0, 0, new MockRaftActorContext.MockPayload(""));
+ setLastLogEntry((MockRaftActorContext) context, 1, 100,
+ new MockRaftActorContext.MockPayload(""));
+ ((MockRaftActorContext) context).getReplicatedLog().setSnapshotIndex(99);
List<ReplicatedLogEntry> entries =
Arrays.asList(
- (ReplicatedLogEntry) new MockRaftActorContext.MockReplicatedLogEntry(100, 101,
- new MockRaftActorContext.MockPayload("foo"))
+ (ReplicatedLogEntry) new MockRaftActorContext.MockReplicatedLogEntry(2, 101,
+ new MockRaftActorContext.MockPayload("foo"))
);
// The new commitIndex is 101
AppendEntries appendEntries =
- new AppendEntries(100, "leader-1", 0, 0, entries, 101);
+ new AppendEntries(2, "leader-1", 100, 1, entries, 101);
RaftState raftState =
createBehavior(context).handleMessage(getRef(), appendEntries);
}};
}
+
+ /**
+ * This test verifies that when InstallSnapshot is received by
+ * the follower its applied correctly.
+ *
+ * @throws Exception
+ */
+ @Test
+ public void testHandleInstallSnapshot() throws Exception {
+ JavaTestKit javaTestKit = new JavaTestKit(getSystem()) {{
+
+ ActorRef leaderActor = getSystem().actorOf(Props.create(
+ MessageCollectorActor.class));
+
+ MockRaftActorContext context = (MockRaftActorContext)
+ createActorContext(getRef());
+
+ Follower follower = (Follower)createBehavior(context);
+
+ HashMap<String, String> followerSnapshot = new HashMap<>();
+ followerSnapshot.put("1", "A");
+ followerSnapshot.put("2", "B");
+ followerSnapshot.put("3", "C");
+
+ ByteString bsSnapshot = toByteString(followerSnapshot);
+ ByteString chunkData = ByteString.EMPTY;
+ int offset = 0;
+ int snapshotLength = bsSnapshot.size();
+ int i = 1;
+
+ do {
+ chunkData = getNextChunk(bsSnapshot, offset);
+ final InstallSnapshot installSnapshot =
+ new InstallSnapshot(1, "leader-1", i, 1,
+ chunkData, i, 3);
+ follower.handleMessage(leaderActor, installSnapshot);
+ offset = offset + 50;
+ i++;
+ } while ((offset+50) < snapshotLength);
+
+ final InstallSnapshot installSnapshot3 = new InstallSnapshot(1, "leader-1", 3, 1, chunkData, 3, 3);
+ follower.handleMessage(leaderActor, installSnapshot3);
+
+ String[] matches = new ReceiveWhile<String>(String.class, duration("2 seconds")) {
+ @Override
+ protected String match(Object o) throws Exception {
+ if (o instanceof ApplySnapshot) {
+ ApplySnapshot as = (ApplySnapshot)o;
+ if (as.getSnapshot().getLastIndex() != installSnapshot3.getLastIncludedIndex()) {
+ return "applySnapshot-lastIndex-mismatch";
+ }
+ if (as.getSnapshot().getLastAppliedTerm() != installSnapshot3.getLastIncludedTerm()) {
+ return "applySnapshot-lastAppliedTerm-mismatch";
+ }
+ if (as.getSnapshot().getLastAppliedIndex() != installSnapshot3.getLastIncludedIndex()) {
+ return "applySnapshot-lastAppliedIndex-mismatch";
+ }
+ if (as.getSnapshot().getLastTerm() != installSnapshot3.getLastIncludedTerm()) {
+ return "applySnapshot-lastTerm-mismatch";
+ }
+ return "applySnapshot";
+ }
+
+ return "ignoreCase";
+ }
+ }.get();
+
+ String applySnapshotMatch = "";
+ for (String reply: matches) {
+ if (reply.startsWith("applySnapshot")) {
+ applySnapshotMatch = reply;
+ }
+ }
+
+ assertEquals("applySnapshot", applySnapshotMatch);
+
+ Object messages = executeLocalOperation(leaderActor, "get-all-messages");
+
+ assertNotNull(messages);
+ assertTrue(messages instanceof List);
+ List<Object> listMessages = (List<Object>) messages;
+
+ int installSnapshotReplyReceivedCount = 0;
+ for (Object message: listMessages) {
+ if (message instanceof InstallSnapshotReply) {
+ ++installSnapshotReplyReceivedCount;
+ }
+ }
+
+ assertEquals(3, installSnapshotReplyReceivedCount);
+
+ }};
+ }
+
+ public Object executeLocalOperation(ActorRef actor, Object message) throws Exception {
+ FiniteDuration operationDuration = Duration.create(5, TimeUnit.SECONDS);
+ Timeout operationTimeout = new Timeout(operationDuration);
+ Future<Object> future = ask(actor, message, operationTimeout);
+
+ try {
+ return Await.result(future, operationDuration);
+ } catch (Exception e) {
+ throw e;
+ }
+ }
+
+ public ByteString getNextChunk (ByteString bs, int offset){
+ int snapshotLength = bs.size();
+ int start = offset;
+ int size = 50;
+ if (50 > snapshotLength) {
+ size = snapshotLength;
+ } else {
+ if ((start + 50) > snapshotLength) {
+ size = snapshotLength - start;
+ }
+ }
+ return bs.substring(start, start + size);
+ }
+
+ private ByteString toByteString(Map<String, String> state) {
+ ByteArrayOutputStream b = null;
+ ObjectOutputStream o = null;
+ try {
+ try {
+ b = new ByteArrayOutputStream();
+ o = new ObjectOutputStream(b);
+ o.writeObject(state);
+ byte[] snapshotBytes = b.toByteArray();
+ return ByteString.copyFrom(snapshotBytes);
+ } finally {
+ if (o != null) {
+ o.flush();
+ o.close();
+ }
+ if (b != null) {
+ b.close();
+ }
+ }
+ } catch (IOException e) {
+ org.junit.Assert.fail("IOException in converting Hashmap to Bytestring:" + e);
+ }
+ return null;
+ }
}
Code Review / controller.git / blobdiff