Teach sal-remoterpc-connector to route actions

[controller.git] / opendaylight / md-sal / sal-remoterpc-connector / src / main / java / org / opendaylight / controller / remote / rpc / OpsListener.java

diff --git a/opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/OpsListener.java b/opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/OpsListener.java
new file mode 100644 (file)
index 0000000..8c5004a
--- /dev/null
+++ b/opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/OpsListener.java
@@ -0,0 +1,78 @@
+/*
+ * 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.remote.rpc;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.Objects.requireNonNull;
+
+import akka.actor.ActorRef;
+import java.util.Collection;
+import java.util.Set;
+import org.opendaylight.controller.remote.rpc.registry.ActionRegistry;
+import org.opendaylight.controller.remote.rpc.registry.RpcRegistry;
+import org.opendaylight.controller.remote.rpc.registry.RpcRegistry.Messages.AddOrUpdateRoutes;
+import org.opendaylight.controller.remote.rpc.registry.RpcRegistry.Messages.RemoveRoutes;
+import org.opendaylight.mdsal.dom.api.DOMActionAvailabilityExtension;
+import org.opendaylight.mdsal.dom.api.DOMActionImplementation;
+import org.opendaylight.mdsal.dom.api.DOMActionInstance;
+import org.opendaylight.mdsal.dom.api.DOMRpcAvailabilityListener;
+import org.opendaylight.mdsal.dom.api.DOMRpcIdentifier;
+import org.opendaylight.mdsal.dom.api.DOMRpcImplementation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * A {@link DOMRpcAvailabilityListener} reacting to RPC implementations different than
+ * {@link RemoteRpcImplementation} or {@link RemoteActionImplementation}.
+ * The knowledge of such implementations is forwarded to {@link RpcRegistry} and {@link ActionRegistry},
+ * which is responsible for advertising their presence to other nodes.
+ */
+final class OpsListener implements DOMRpcAvailabilityListener, DOMActionAvailabilityExtension.AvailabilityListener {
+    private static final Logger LOG = LoggerFactory.getLogger(OpsListener.class);
+
+    private final ActorRef rpcRegistry;
+    private final ActorRef actionRegistry;
+
+    OpsListener(final ActorRef rpcRegistry, final ActorRef actionRegistry) {
+        this.rpcRegistry = requireNonNull(rpcRegistry);
+        this.actionRegistry = requireNonNull(actionRegistry);
+    }
+
+    @Override
+    public void onRpcAvailable(final Collection<DOMRpcIdentifier> rpcs) {
+        checkArgument(rpcs != null, "Input Collection of DOMRpcIdentifier can not be null.");
+        LOG.debug("Adding registration for [{}]", rpcs);
+
+        rpcRegistry.tell(new AddOrUpdateRoutes(rpcs), ActorRef.noSender());
+    }
+
+    @Override
+    public void onRpcUnavailable(final Collection<DOMRpcIdentifier> rpcs) {
+        checkArgument(rpcs != null, "Input Collection of DOMRpcIdentifier can not be null.");
+
+        LOG.debug("Removing registration for [{}]", rpcs);
+        rpcRegistry.tell(new RemoveRoutes(rpcs), ActorRef.noSender());
+    }
+
+    @Override
+    public boolean acceptsImplementation(final DOMRpcImplementation impl) {
+        return !(impl instanceof RemoteRpcImplementation);
+    }
+
+    @Override
+    public boolean acceptsImplementation(final DOMActionImplementation impl) {
+        return !(impl instanceof RemoteActionImplementation);
+    }
+
+    @Override
+    public void onActionsChanged(final Set<DOMActionInstance> removed, final Set<DOMActionInstance> added) {
+        LOG.debug("adding registration for [{}]", added);
+        LOG.debug("removing registration for [{}]", removed);
+        actionRegistry.tell(new ActionRegistry.Messages.UpdateActions(added, removed), ActorRef.noSender());
+    }
+}