Initial message bus implementation

[controller.git] / opendaylight / md-sal / messagebus-impl / src / main / java / org / opendaylight / controller / messagebus / app / impl / EventSourceTopology.java

diff --git a/opendaylight/md-sal/messagebus-impl/src/main/java/org/opendaylight/controller/messagebus/app/impl/EventSourceTopology.java b/opendaylight/md-sal/messagebus-impl/src/main/java/org/opendaylight/controller/messagebus/app/impl/EventSourceTopology.java
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+/*
+ * Copyright (c) 2013 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.messagebus.app.impl;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.mdsal.DataStore;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.Node1;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.Node1Builder;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.TopologyTypes1;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.TopologyTypes1Builder;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.topology.event.source.type.TopologyEventSource;
+import org.opendaylight.yang.gen.v1.urn.cisco.params.xml.ns.yang.messagebus.eventsource.rev141202.topology.event.source.type.TopologyEventSourceBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class EventSourceTopology {
+    private static final Logger LOGGER = LoggerFactory.getLogger(EventSourceTopology.class);
+
+    private static final String topologyId = "EVENT-SOURCE-TOPOLOGY" ;
+    private static final TopologyKey topologyKey = new TopologyKey(new TopologyId(topologyId));
+    private static final LogicalDatastoreType datastoreType = LogicalDatastoreType.OPERATIONAL;
+
+    private static final InstanceIdentifier<Topology> topologyInstanceIdentifier =
+            InstanceIdentifier.create(NetworkTopology.class)
+                    .child(Topology.class, topologyKey);
+
+    private static final InstanceIdentifier<TopologyTypes1> topologyTypeInstanceIdentifier =
+            topologyInstanceIdentifier
+                    .child(TopologyTypes.class)
+                    .augmentation(TopologyTypes1.class);
+
+    private static final InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang
+                                            .network.topology.rev131021.network.topology.topology.Node> eventSourceTopologyPath =
+            InstanceIdentifier.create(NetworkTopology.class)
+                    .child(Topology.class)
+                    .child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang
+                            .network.topology.rev131021.network.topology.topology.Node.class);
+
+    private final Map<DataChangeListener, ListenerRegistration<DataChangeListener>> registrations =
+            new ConcurrentHashMap<>();
+
+    private final DataStore dataStore;
+
+    public EventSourceTopology(DataStore dataStore) {
+        this.dataStore = dataStore;
+    }
+
+    public void mdsalReady() {
+        TopologyEventSource topologySource = new TopologyEventSourceBuilder().build();
+        TopologyTypes1 topologyTypeAugment = new TopologyTypes1Builder().setTopologyEventSource(topologySource).build();
+
+        dataStore.asyncPUT(datastoreType, topologyTypeInstanceIdentifier, topologyTypeAugment);
+    }
+
+    public void insert(Node node) {
+        String nodeId = node.getKey().getId().getValue();
+        NodeKey nodeKey = new NodeKey(new NodeId(nodeId));
+        InstanceIdentifier<Node1> topologyNodeAugment
+                = topologyInstanceIdentifier
+                .child(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang
+                        .network.topology.rev131021.network.topology.topology.Node.class, nodeKey)
+                .augmentation(Node1.class);
+
+        Node1 nodeAgument = new Node1Builder().setEventSourceNode(node.getId()).build();
+        dataStore.asyncPUT(datastoreType, topologyNodeAugment, nodeAgument);
+    }
+
+    // TODO: Should we expose this functioanlity over RPC?
+    public List<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang
+                .network.topology.rev131021.network.topology.topology.Node> snapshot() {
+        Topology topology = dataStore.read(datastoreType, topologyInstanceIdentifier);
+        return topology.getNode();
+    }
+
+    public void registerDataChangeListener(DataChangeListener listener) {
+        ListenerRegistration<DataChangeListener> listenerRegistration = dataStore.registerDataChangeListener(datastoreType,
+                eventSourceTopologyPath,
+                listener,
+                DataBroker.DataChangeScope.SUBTREE);
+
+        registrations.put(listener, listenerRegistration);
+    }
+}