Move MXBean definitions to cds-mgmt-api

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / ShardDataTreeListenerInfoMXBeanImpl.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeListenerInfoMXBeanImpl.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeListenerInfoMXBeanImpl.java
new file mode 100644 (file)
index 0000000..4b34397
--- /dev/null
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTreeListenerInfoMXBeanImpl.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2017 Inocybe Technologies 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.datastore;
+
+import static java.util.Objects.requireNonNull;
+
+import akka.actor.ActorRef;
+import akka.actor.ActorSelection;
+import akka.dispatch.Futures;
+import akka.pattern.Patterns;
+import akka.util.Timeout;
+import com.google.common.base.Throwables;
+import com.google.common.collect.Streams;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.stream.Collectors;
+import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardDataTreeListenerInfoMXBean;
+import org.opendaylight.controller.cluster.datastore.messages.DataTreeListenerInfo;
+import org.opendaylight.controller.cluster.datastore.messages.GetInfo;
+import org.opendaylight.controller.cluster.datastore.messages.OnDemandShardState;
+import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
+import scala.concurrent.Await;
+import scala.concurrent.ExecutionContext;
+import scala.concurrent.Future;
+
+/**
+ * Implementation of ShardDataTreeListenerInfoMXBean.
+ *
+ * @author Thomas Pantelis
+ */
+final class ShardDataTreeListenerInfoMXBeanImpl extends AbstractMXBean implements ShardDataTreeListenerInfoMXBean {
+    private static final String JMX_CATEGORY = "ShardDataTreeListenerInfo";
+
+    private final OnDemandShardStateCache stateCache;
+
+    ShardDataTreeListenerInfoMXBeanImpl(final String shardName, final String mxBeanType, final ActorRef shardActor) {
+        super(shardName, mxBeanType, JMX_CATEGORY);
+        stateCache = new OnDemandShardStateCache(shardName, requireNonNull(shardActor));
+    }
+
+    @Override
+    public List<DataTreeListenerInfo> getDataTreeChangeListenerInfo() {
+        return getListenerActorsInfo(getState().getTreeChangeListenerActors());
+    }
+
+    @SuppressWarnings("checkstyle:IllegalCatch")
+    private OnDemandShardState getState() {
+        try {
+            return stateCache.get();
+        } catch (Exception e) {
+            Throwables.throwIfUnchecked(e);
+            throw new RuntimeException(e);
+        }
+    }
+
+    @SuppressWarnings("checkstyle:IllegalCatch")
+    @SuppressFBWarnings(value = "REC_CATCH_EXCEPTION", justification = "Akka's Await.result() API contract")
+    private static List<DataTreeListenerInfo> getListenerActorsInfo(final Collection<ActorSelection> actors) {
+        final Timeout timeout = new Timeout(20, TimeUnit.SECONDS);
+        final List<Future<Object>> futureList = new ArrayList<>(actors.size());
+        for (ActorSelection actor: actors) {
+            futureList.add(Patterns.ask(actor, GetInfo.INSTANCE, timeout));
+        }
+
+        final Iterable<Object> listenerInfos;
+        try {
+            listenerInfos = Await.result(Futures.sequence(futureList, ExecutionContext.Implicits$.MODULE$.global()),
+                timeout.duration());
+        } catch (TimeoutException | InterruptedException e) {
+            throw new IllegalStateException("Failed to acquire listeners", e);
+        }
+
+        return Streams.stream(listenerInfos).map(DataTreeListenerInfo.class::cast).collect(Collectors.toList());
+    }
+}