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.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
23 import com.google.common.base.Optional;
24 import com.google.common.base.Preconditions;
25 import com.google.common.util.concurrent.CheckedFuture;
27 public class SouthboundUtil {
29 private static final Logger LOG = LoggerFactory.getLogger(SouthboundUtil.class);
31 private static InstanceIdentifierCodec instanceIdentifierCodec;
33 public static void setInstanceIdentifierCodec(InstanceIdentifierCodec iidc) {
34 instanceIdentifierCodec = iidc;
37 public static String serializeInstanceIdentifier(InstanceIdentifier<?> iid) {
38 return instanceIdentifierCodec.serialize(iid);
41 public static InstanceIdentifier<?> deserializeInstanceIdentifier(String iidString) {
42 InstanceIdentifier<?> result = null;
44 result = instanceIdentifierCodec.bindingDeserializer(iidString);
45 } catch (DeserializationException e) {
46 LOG.warn("Unable to deserialize iidString",e);
52 public static Optional<OvsdbNodeAugmentation> getManagingNode(DataBroker db,OvsdbBridgeAttributes mn) {
53 Preconditions.checkNotNull(mn);
55 OvsdbNodeRef ref = mn.getManagedBy();
56 if (ref != null && ref.getValue() != null) {
57 ReadOnlyTransaction transaction = db.newReadOnlyTransaction();
58 @SuppressWarnings("unchecked") // Note: erasure makes this safe in combination with the typecheck below
59 InstanceIdentifier<Node> path = (InstanceIdentifier<Node>) ref.getValue();
60 CheckedFuture<Optional<Node>, ReadFailedException> nf = transaction.read(
61 LogicalDatastoreType.OPERATIONAL, path);
63 Optional<Node> optional = nf.get();
64 if (optional != null && optional.isPresent() && optional.get() instanceof Node) {
65 OvsdbNodeAugmentation ovsdbNode = optional.get().getAugmentation(OvsdbNodeAugmentation.class);
66 if (ovsdbNode != null) {
67 return Optional.of(ovsdbNode);
69 LOG.warn("OvsdbManagedNode {} claims to be managed by {} but "
70 + "that OvsdbNode does not exist", mn,ref.getValue());
71 return Optional.absent();
74 LOG.warn("Mysteriously got back a thing which is *not* a topology Node: {}",optional);
75 return Optional.absent();
78 LOG.warn("Cannot find client for OvsdbManagedNode without a specified ManagedBy {}",mn);
79 return Optional.absent();
81 } catch (Exception e) {
82 LOG.warn("Failed to get OvsdbNode that manages OvsdbManagedNode {}", mn, e);
83 return Optional.absent();