Enable remote notification for southbound plugin
[ovsdb.git] / southbound / southbound-impl / src / main / java / org / opendaylight / ovsdb / southbound / OvsdbDataChangeListener.java
index 14ecfc775581c6f0aed89354e22e2197be1017df..4db986d9606d94bdd8a3fb853e9082ee075f554e 100644 (file)
@@ -1,11 +1,21 @@
+/*
+ * Copyright (c) 2015 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.ovsdb.southbound;
 
 import java.net.UnknownHostException;
-import java.util.HashSet;
+import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 
+import org.opendaylight.controller.md.sal.binding.api.ClusteredDataChangeListener;
 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.AsyncDataBroker.DataChangeScope;
@@ -17,10 +27,12 @@ import org.opendaylight.ovsdb.southbound.ovsdb.transact.DataChangesManagedByOvsd
 import org.opendaylight.ovsdb.southbound.ovsdb.transact.TransactCommandAggregator;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAugmentation;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.ConnectionInfo;
 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.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.Node;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.node.TerminationPoint;
 import org.opendaylight.yangtools.concepts.ListenerRegistration;
 import org.opendaylight.yangtools.yang.binding.DataObject;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
@@ -31,7 +43,7 @@ import com.google.common.base.Preconditions;
 import com.google.common.base.Predicates;
 import com.google.common.collect.Maps;
 
-public class OvsdbDataChangeListener implements DataChangeListener, AutoCloseable {
+public class OvsdbDataChangeListener implements ClusteredDataChangeListener, AutoCloseable {
 
     private ListenerRegistration<DataChangeListener> registration;
     private OvsdbConnectionManager cm;
@@ -60,6 +72,19 @@ public class OvsdbDataChangeListener implements DataChangeListener, AutoCloseabl
     public void onDataChanged(
             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
         LOG.trace("onDataChanged: {}", changes);
+        for (Entry<InstanceIdentifier<?>, DataObject> created : changes.getCreatedData().entrySet()) {
+            // TODO validate we have the correct kind of InstanceIdentifier
+            if (created.getValue() instanceof OvsdbNodeAugmentation) {
+                OvsdbNodeAugmentation ovsdbNode = (OvsdbNodeAugmentation)created.getValue();
+                ConnectionInfo key = ovsdbNode.getConnectionInfo();
+                InstanceIdentifier<Node> iid = cm.getInstanceIdentifier(key);
+                if ( iid != null) {
+                    LOG.warn("Connection to device {} already exists. Plugin does not allow multiple connections "
+                              + "to same device, hence dropping the request {}", key, ovsdbNode);
+                    return;
+                }
+            }
+        }
         // Connect first if we have to:
         connect(changes);
 
@@ -72,15 +97,20 @@ public class OvsdbDataChangeListener implements DataChangeListener, AutoCloseabl
         // Finally disconnect if we need to
         disconnect(changes);
 
+        init(changes);
+
+        LOG.trace("onDataChanged: exit");
     }
 
     private void updateData(
             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
-        for (OvsdbConnectionInstance connectionInstance : connectionInstancesFromChanges(changes)) {
+        for (Entry<InstanceIdentifier<Node>, OvsdbConnectionInstance> connectionInstanceEntry :
+                connectionInstancesFromChanges(changes).entrySet()) {
+            OvsdbConnectionInstance connectionInstance = connectionInstanceEntry.getValue();
             connectionInstance.transact(new TransactCommandAggregator(
                     new BridgeOperationalState(db, changes),
                     new DataChangesManagedByOvsdbNodeEvent(
-                            SouthboundMapper.createInstanceIdentifier(connectionInstance.getMDConnectionInfo()),
+                            connectionInstance.getInstanceIdentifier(),
                             changes)));
         }
     }
@@ -111,7 +141,7 @@ public class OvsdbDataChangeListener implements DataChangeListener, AutoCloseabl
                         if (original.getValue() instanceof OvsdbNodeAugmentation) {
                             try {
                                 cm.disconnect((OvsdbNodeAugmentation) original.getValue());
-                                cm.connect(value);
+                                cm.connect((InstanceIdentifier<Node>) original.getKey(),value);
                             } catch (UnknownHostException e) {
                                 LOG.warn("Failed to disconnect to ovsdbNode", e);
                             }
@@ -128,7 +158,8 @@ public class OvsdbDataChangeListener implements DataChangeListener, AutoCloseabl
             // TODO validate we have the correct kind of InstanceIdentifier
             if (created.getValue() instanceof OvsdbNodeAugmentation) {
                 try {
-                    cm.connect((OvsdbNodeAugmentation) created.getValue());
+                    cm.connect((InstanceIdentifier<Node>) created.getKey(),
+                            (OvsdbNodeAugmentation) created.getValue());
                 } catch (UnknownHostException e) {
                     LOG.warn("Failed to connect to ovsdbNode", e);
                 }
@@ -136,45 +167,61 @@ public class OvsdbDataChangeListener implements DataChangeListener, AutoCloseabl
         }
     }
 
-    public Set<OvsdbConnectionInstance> connectionInstancesFromChanges(
+    private void init(
             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
-        Set<OvsdbConnectionInstance> result = new HashSet<OvsdbConnectionInstance>();
-        result.addAll(connectionInstancesFromMap(changes.getCreatedData()));
-        result.addAll(connectionInstancesFromMap(changes.getUpdatedData()));
-        result.addAll(connectionInstancesFromMap(
+        for (Entry<InstanceIdentifier<?>, DataObject> created : changes.getCreatedData().entrySet()) {
+            if (created.getValue() instanceof OvsdbNodeAugmentation) {
+                OvsdbNodeAugmentation ovsdbNode = (OvsdbNodeAugmentation)created.getValue();
+                cm.init(ovsdbNode.getConnectionInfo());
+            }
+        }
+
+    }
+
+    public Map<InstanceIdentifier<Node>,OvsdbConnectionInstance> connectionInstancesFromChanges(
+            AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes) {
+        Map<InstanceIdentifier<Node>,OvsdbConnectionInstance> result =
+                new HashMap<InstanceIdentifier<Node>,OvsdbConnectionInstance>();
+        result.putAll(connectionInstancesFromMap(changes.getCreatedData()));
+        result.putAll(connectionInstancesFromMap(changes.getUpdatedData()));
+        result.putAll(connectionInstancesFromMap(
                 Maps.filterKeys(changes.getOriginalData(), Predicates.in(changes.getRemovedPaths()))));
         return result;
     }
 
-    public Set<OvsdbConnectionInstance> connectionInstancesFromMap(Map<InstanceIdentifier<?>, DataObject> map) {
+    public Map<InstanceIdentifier<Node>,OvsdbConnectionInstance> connectionInstancesFromMap(Map<InstanceIdentifier<?>,
+            DataObject> map) {
         Preconditions.checkNotNull(map);
-        Set<OvsdbConnectionInstance> result = new HashSet<OvsdbConnectionInstance>();
+        Map<InstanceIdentifier<Node>,OvsdbConnectionInstance> result =
+                new HashMap<InstanceIdentifier<Node>,OvsdbConnectionInstance>();
         for ( Entry<InstanceIdentifier<?>, DataObject> created : map.entrySet()) {
             if (created.getValue() instanceof Node) {
+                OvsdbConnectionInstance client = null;
                 LOG.debug("Received request for {}",created.getValue());
                 OvsdbBridgeAugmentation bridge =
                         ((Node)created.getValue()).getAugmentation(OvsdbBridgeAugmentation.class);
                 if (bridge != null) {
-                    OvsdbConnectionInstance client = cm.getConnectionInstance(bridge);
-                    if (client != null) {
-                        LOG.debug("Found client for {}", created.getValue());
-                        result.add(client);
-                    } else {
-                        LOG.debug("Did not find client for {}",created.getValue());
-                    }
+                    client = cm.getConnectionInstance(bridge);
                 } else {
                     OvsdbNodeAugmentation ovsNode =
                             ((Node)created.getValue()).getAugmentation(OvsdbNodeAugmentation.class);
                     if (ovsNode != null && ovsNode.getConnectionInfo() != null) {
-                        OvsdbConnectionInstance client = cm.getConnectionInstance(ovsNode.getConnectionInfo());
-                        if (client != null) {
-                            LOG.debug("Found client for {}", created.getValue());
-                            result.add(client);
-                        } else {
-                            LOG.debug("Did not find client for {}",created.getValue());
+                        client = cm.getConnectionInstance(ovsNode.getConnectionInfo());
+                    } else {
+                        List<TerminationPoint> terminationPoint = ((Node)created.getValue()).getTerminationPoint();
+                        if (!terminationPoint.isEmpty()) {
+                            InstanceIdentifier<Node> nodeIid = SouthboundMapper.
+                                    createInstanceIdentifier(((Node)created.getValue()).getNodeId());
+                            client = cm.getConnectionInstance(nodeIid);
                         }
                     }
                 }
+                if (client != null) {
+                    LOG.debug("Found client for {}", created.getValue());
+                    result.put((InstanceIdentifier<Node>) created.getKey(), client);
+                } else {
+                    LOG.debug("Did not find client for {}",created.getValue());
+                }
             }
         }
         return result;