2 * Copyright (c) 2015 Huawei Technologies Co., Ltd. and others. All rights reserved.
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
9 package org.opendaylight.controller.cluster.common.actor;
11 import akka.actor.Props;
12 import akka.actor.UntypedActor;
13 import akka.japi.Effect;
14 import akka.remote.AssociationErrorEvent;
15 import akka.remote.InvalidAssociation;
16 import akka.remote.RemotingLifecycleEvent;
17 import org.slf4j.Logger;
18 import org.slf4j.LoggerFactory;
21 * This class listens to Akka RemotingLifecycleEvent events to detect when this node has been
22 * quarantined by another. Once this node gets quarantined, restart the ActorSystem to allow this
23 * node to rejoin the cluster.
25 * @author Gary Wu gary.wu1@huawei.com
28 public class QuarantinedMonitorActor extends UntypedActor {
30 private static final Logger LOG = LoggerFactory.getLogger(QuarantinedMonitorActor.class);
32 public static final String ADDRESS = "quarantined-monitor";
34 private final Effect callback;
35 private boolean quarantined;
37 protected QuarantinedMonitorActor(Effect callback) {
38 this.callback = callback;
40 LOG.debug("Created QuarantinedMonitorActor");
42 getContext().system().eventStream().subscribe(getSelf(), RemotingLifecycleEvent.class);
46 public void postStop() {
47 LOG.debug("Stopping QuarantinedMonitorActor");
51 public void onReceive(Object message) throws Exception {
52 final String messageType = message.getClass().getSimpleName();
53 LOG.trace("onReceive {} {}", messageType, message);
55 // check to see if we got quarantined by another node
61 // TODO: follow https://github.com/akka/akka/issues/18758 to see if Akka adds a named
62 // exception for quarantine detection
63 if (message instanceof AssociationErrorEvent) {
64 AssociationErrorEvent event = (AssociationErrorEvent) message;
65 Throwable cause = event.getCause();
66 if (cause instanceof InvalidAssociation) {
67 Throwable cause2 = ((InvalidAssociation) cause).getCause();
68 if (cause2.getMessage().contains("quarantined this system")) {
71 LOG.warn("Got quarantined by {}", event.getRemoteAddress());
73 // execute the callback
76 LOG.debug("received AssociationErrorEvent, cause: InvalidAssociation", cause2);
79 LOG.debug("received AssociationErrorEvent", cause);
84 public static Props props(final Effect callback) {
85 return Props.create(QuarantinedMonitorActor.class, callback);