2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.ovsdb.southbound;
10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
11 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
12 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
13 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbBridgeAttributes;
15 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeRef;
17 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
18 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
19 import org.slf4j.Logger;
20 import org.slf4j.LoggerFactory;
22 import com.google.common.base.Optional;
23 import com.google.common.base.Preconditions;
24 import com.google.common.util.concurrent.CheckedFuture;
26 public class SouthboundUtil {
28 private static final Logger LOG = LoggerFactory.getLogger(SouthboundUtil.class);
31 public static Optional<OvsdbNodeAugmentation> getManagingNode(DataBroker db,OvsdbBridgeAttributes mn) {
32 Preconditions.checkNotNull(mn);
34 OvsdbNodeRef ref = mn.getManagedBy();
35 if(ref != null && ref.getValue() != null) {
36 ReadOnlyTransaction transaction = db.newReadOnlyTransaction();
37 @SuppressWarnings("unchecked") // Note: erasure makes this safe in combination with the typecheck below
38 InstanceIdentifier<Node> path = (InstanceIdentifier<Node>) ref.getValue();
39 CheckedFuture<Optional<Node>, ReadFailedException> nf = transaction.read(LogicalDatastoreType.OPERATIONAL, path);
41 Optional<Node> optional = nf.get();
42 if(optional != null && optional.isPresent() && optional.get() instanceof Node) {
43 OvsdbNodeAugmentation ovsdbNode = optional.get().getAugmentation(OvsdbNodeAugmentation.class);
44 if(ovsdbNode !=null) {
45 return Optional.of(ovsdbNode);
47 LOG.warn("OvsdbManagedNode {} claims to be managed by {} but that OvsdbNode does not exist",mn,ref.getValue());
48 return Optional.absent();
51 LOG.warn("Mysteriously got back a thing which is *not* a topology Node: {}",optional);
52 return Optional.absent();
55 LOG.warn("Cannot find client for OvsdbManagedNode without a specified ManagedBy {}",mn);
56 return Optional.absent();
58 } catch (Exception e) {
59 LOG.warn("Failed to get OvsdbNode that manages OvsdbManagedNode {}",mn, e);
60 return Optional.absent();