+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-
-package org.opendaylight.controller.cluster.example;
-
-import akka.actor.ActorRef;
-import akka.actor.Props;
-import com.google.common.base.Optional;
-import com.google.protobuf.ByteString;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.util.HashMap;
-import java.util.Map;
-import javax.annotation.Nonnull;
-import org.opendaylight.controller.cluster.example.messages.KeyValue;
-import org.opendaylight.controller.cluster.example.messages.KeyValueSaved;
-import org.opendaylight.controller.cluster.example.messages.PrintRole;
-import org.opendaylight.controller.cluster.example.messages.PrintState;
-import org.opendaylight.controller.cluster.notifications.RoleChangeNotifier;
-import org.opendaylight.controller.cluster.raft.ConfigParams;
-import org.opendaylight.controller.cluster.raft.RaftActor;
-import org.opendaylight.controller.cluster.raft.RaftActorRecoveryCohort;
-import org.opendaylight.controller.cluster.raft.RaftActorSnapshotCohort;
-import org.opendaylight.controller.cluster.raft.RaftState;
-import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
-import org.opendaylight.controller.cluster.raft.behaviors.Leader;
-import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
-
-/**
- * A sample actor showing how the RaftActor is to be extended
- */
-public class ExampleActor extends RaftActor implements RaftActorRecoveryCohort, RaftActorSnapshotCohort {
-
- private final Map<String, String> state = new HashMap<>();
-
- private long persistIdentifier = 1;
- private final Optional<ActorRef> roleChangeNotifier;
-
-
- public ExampleActor(String id, Map<String, String> peerAddresses,
- Optional<ConfigParams> configParams) {
- super(id, peerAddresses, configParams);
- setPersistence(true);
- roleChangeNotifier = createRoleChangeNotifier(id);
- }
-
- public static Props props(final String id, final Map<String, String> peerAddresses,
- final Optional<ConfigParams> configParams) {
- return Props.create(ExampleActor.class, id, peerAddresses, configParams);
- }
-
- @Override public void onReceiveCommand(Object message) throws Exception{
- if(message instanceof KeyValue){
- if(isLeader()) {
- String persistId = Long.toString(persistIdentifier++);
- persistData(getSender(), persistId, (Payload) message);
- } else {
- if(getLeader() != null) {
- getLeader().forward(message, getContext());
- }
- }
-
- } else if (message instanceof PrintState) {
- if(LOG.isDebugEnabled()) {
- LOG.debug("State of the node:{} has entries={}, {}",
- getId(), state.size(), getReplicatedLogState());
- }
-
- } else if (message instanceof PrintRole) {
- if(LOG.isDebugEnabled()) {
- if (getRaftState() == RaftState.Leader || getRaftState() == RaftState.IsolatedLeader) {
- final String followers = ((Leader)this.getCurrentBehavior()).printFollowerStates();
- LOG.debug("{} = {}, Peers={}, followers={}", getId(), getRaftState(),
- getRaftActorContext().getPeerAddresses().keySet(), followers);
- } else {
- LOG.debug("{} = {}, Peers={}", getId(), getRaftState(),
- getRaftActorContext().getPeerAddresses().keySet());
- }
-
-
- }
-
- } else {
- super.onReceiveCommand(message);
- }
- }
-
- protected String getReplicatedLogState() {
- return "snapshotIndex=" + getRaftActorContext().getReplicatedLog().getSnapshotIndex()
- + ", snapshotTerm=" + getRaftActorContext().getReplicatedLog().getSnapshotTerm()
- + ", im-mem journal size=" + getRaftActorContext().getReplicatedLog().size();
- }
-
- public Optional<ActorRef> createRoleChangeNotifier(String actorId) {
- ActorRef exampleRoleChangeNotifier = this.getContext().actorOf(
- RoleChangeNotifier.getProps(actorId), actorId + "-notifier");
- return Optional.<ActorRef>of(exampleRoleChangeNotifier);
- }
-
- @Override
- protected Optional<ActorRef> getRoleChangeNotifier() {
- return roleChangeNotifier;
- }
-
- @Override protected void applyState(final ActorRef clientActor, final String identifier,
- final Object data) {
- if(data instanceof KeyValue){
- KeyValue kv = (KeyValue) data;
- state.put(kv.getKey(), kv.getValue());
- if(clientActor != null) {
- clientActor.tell(new KeyValueSaved(), getSelf());
- }
- }
- }
-
- @Override
- public void createSnapshot(ActorRef actorRef) {
- ByteString bs = null;
- try {
- bs = fromObject(state);
- } catch (Exception e) {
- LOG.error("Exception in creating snapshot", e);
- }
- getSelf().tell(new CaptureSnapshotReply(bs.toByteArray()), null);
- }
-
- @Override
- public void applySnapshot(byte [] snapshot) {
- state.clear();
- try {
- state.putAll((HashMap<String, String>) toObject(snapshot));
- } catch (Exception e) {
- LOG.error("Exception in applying snapshot", e);
- }
- if(LOG.isDebugEnabled()) {
- LOG.debug("Snapshot applied to state : {}", ((HashMap<?, ?>) state).size());
- }
- }
-
- private ByteString fromObject(Object snapshot) throws Exception {
- ByteArrayOutputStream b = null;
- ObjectOutputStream o = null;
- try {
- b = new ByteArrayOutputStream();
- o = new ObjectOutputStream(b);
- o.writeObject(snapshot);
- byte[] snapshotBytes = b.toByteArray();
- return ByteString.copyFrom(snapshotBytes);
- } finally {
- if (o != null) {
- o.flush();
- o.close();
- }
- if (b != null) {
- b.close();
- }
- }
- }
-
- private Object toObject(byte [] bs) throws ClassNotFoundException, IOException {
- Object obj = null;
- ByteArrayInputStream bis = null;
- ObjectInputStream ois = null;
- try {
- bis = new ByteArrayInputStream(bs);
- ois = new ObjectInputStream(bis);
- obj = ois.readObject();
- } finally {
- if (bis != null) {
- bis.close();
- }
- if (ois != null) {
- ois.close();
- }
- }
- return obj;
- }
-
- @Override protected void onStateChanged() {
-
- }
-
- @Override public void onReceiveRecover(Object message)throws Exception {
- super.onReceiveRecover(message);
- }
-
- @Override public String persistenceId() {
- return getId();
- }
-
- @Override
- @Nonnull
- protected RaftActorRecoveryCohort getRaftActorRecoveryCohort() {
- return this;
- }
-
- @Override
- public void startLogRecoveryBatch(int maxBatchSize) {
- }
-
- @Override
- public void appendRecoveredLogEntry(Payload data) {
- }
-
- @Override
- public void applyCurrentLogRecoveryBatch() {
- }
-
- @Override
- public void onRecoveryComplete() {
- }
-
- @Override
- public void applyRecoverySnapshot(byte[] snapshot) {
- }
-
- @Override
- protected RaftActorSnapshotCohort getRaftActorSnapshotCohort() {
- return this;
- }
-}
Code Review / controller.git / blobdiff