BUG 4151 : Create a shared actor system

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / config / yang / config / actor_system_provider / impl / ActorSystemProviderImpl.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/config/yang/config/actor_system_provider/impl/ActorSystemProviderImpl.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/config/yang/config/actor_system_provider/impl/ActorSystemProviderImpl.java
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+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/config/yang/config/actor_system_provider/impl/ActorSystemProviderImpl.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2015 Brocade Communications 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.config.yang.config.actor_system_provider.impl;
+
+import akka.actor.ActorSystem;
+import akka.osgi.BundleDelegatingClassLoader;
+import com.typesafe.config.ConfigFactory;
+import java.util.concurrent.TimeUnit;
+import org.opendaylight.controller.cluster.ActorSystemProvider;
+import org.opendaylight.controller.cluster.ActorSystemProviderListener;
+import org.opendaylight.controller.cluster.common.actor.AkkaConfigurationReader;
+import org.opendaylight.controller.cluster.common.actor.FileAkkaConfigurationReader;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.util.ListenerRegistry;
+import org.osgi.framework.BundleContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import scala.concurrent.duration.Duration;
+
+public class ActorSystemProviderImpl implements ActorSystemProvider, AutoCloseable {
+    private static final String ACTOR_SYSTEM_NAME = "opendaylight-cluster-data";
+    private static final String CONFIGURATION_NAME = "odl-cluster-data";
+    static final Logger LOG = LoggerFactory.getLogger(ActorSystemProviderImpl.class);
+
+    private ActorSystem actorSystem;
+    private final BundleDelegatingClassLoader classLoader;
+    private final ListenerRegistry<ActorSystemProviderListener> listeners = new ListenerRegistry<>();
+
+    public ActorSystemProviderImpl(BundleContext bundleContext) {
+        LOG.info("Creating new ActorSystem");
+
+        classLoader = new BundleDelegatingClassLoader(bundleContext.getBundle(),
+                Thread.currentThread().getContextClassLoader());
+
+        createActorSystem();
+    }
+
+    private void createActorSystem() {
+        AkkaConfigurationReader configurationReader = new FileAkkaConfigurationReader();
+        actorSystem = ActorSystem.create(ACTOR_SYSTEM_NAME,
+                ConfigFactory.load(configurationReader.read()).getConfig(CONFIGURATION_NAME), classLoader);
+    }
+
+    @Override
+    public ActorSystem getActorSystem() {
+        return actorSystem;
+    }
+
+    @Override
+    public ListenerRegistration<ActorSystemProviderListener> registerActorSystemProviderListener(
+            ActorSystemProviderListener listener) {
+        return listeners.register(listener);
+    }
+
+    @Override
+    public void close() {
+        LOG.info("Shutting down ActorSystem");
+
+        actorSystem.shutdown();
+        try {
+            actorSystem.awaitTermination(Duration.create(10, TimeUnit.SECONDS));
+        } catch (Exception e) {
+            LOG.warn("Error awaiting actor termination", e);
+        }
+    }
+}
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