2 * Copyright (c) 2017 Inocybe Technologies 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
8 package org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard;
10 import static java.util.Objects.requireNonNull;
12 import akka.actor.ActorRef;
13 import akka.actor.ActorSelection;
14 import akka.dispatch.Futures;
15 import akka.pattern.Patterns;
16 import akka.util.Timeout;
17 import com.google.common.base.Throwables;
18 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
19 import java.util.ArrayList;
20 import java.util.Collection;
21 import java.util.List;
22 import java.util.concurrent.TimeUnit;
23 import org.opendaylight.controller.cluster.datastore.messages.DataTreeListenerInfo;
24 import org.opendaylight.controller.cluster.datastore.messages.GetInfo;
25 import org.opendaylight.controller.cluster.datastore.messages.OnDemandShardState;
26 import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
27 import scala.concurrent.Await;
28 import scala.concurrent.ExecutionContext;
29 import scala.concurrent.Future;
32 * Implementation of ShardDataTreeListenerInfoMXBean.
34 * @author Thomas Pantelis
36 public class ShardDataTreeListenerInfoMXBeanImpl extends AbstractMXBean implements ShardDataTreeListenerInfoMXBean {
37 private static final String JMX_CATEGORY = "ShardDataTreeListenerInfo";
39 private final OnDemandShardStateCache stateCache;
41 public ShardDataTreeListenerInfoMXBeanImpl(final String shardName, final String mxBeanType,
42 final ActorRef shardActor) {
43 super(shardName, mxBeanType, JMX_CATEGORY);
44 stateCache = new OnDemandShardStateCache(shardName, requireNonNull(shardActor));
48 public List<DataTreeListenerInfo> getDataTreeChangeListenerInfo() {
49 return getListenerActorsInfo(getState().getTreeChangeListenerActors());
52 @SuppressWarnings("checkstyle:IllegalCatch")
53 private OnDemandShardState getState() {
55 return stateCache.get();
56 } catch (Exception e) {
57 Throwables.throwIfUnchecked(e);
58 throw new RuntimeException(e);
62 @SuppressWarnings("checkstyle:IllegalCatch")
63 @SuppressFBWarnings(value = "REC_CATCH_EXCEPTION", justification = "Akka's Await.result() API contract")
64 private static List<DataTreeListenerInfo> getListenerActorsInfo(final Collection<ActorSelection> actors) {
65 final Timeout timeout = new Timeout(20, TimeUnit.SECONDS);
66 final List<Future<Object>> futureList = new ArrayList<>(actors.size());
67 for (ActorSelection actor: actors) {
68 futureList.add(Patterns.ask(actor, GetInfo.INSTANCE, timeout));
72 final List<DataTreeListenerInfo> listenerInfoList = new ArrayList<>();
73 Await.result(Futures.sequence(futureList, ExecutionContext.Implicits$.MODULE$.global()),
74 timeout.duration()).forEach(obj -> listenerInfoList.add((DataTreeListenerInfo) obj));
75 return listenerInfoList;
76 } catch (Exception e) {
77 throw new RuntimeException(e);