2 * Copyright (c) 2015 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.protocol.bgp.rib.impl;
10 import com.google.common.base.Optional;
11 import javax.annotation.Nonnull;
12 import javax.annotation.Nullable;
13 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
14 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer;
15 import org.opendaylight.yangtools.yang.binding.BindingMapping;
16 import org.opendaylight.yangtools.yang.common.QName;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
19 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
20 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
21 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 * Maintains the mapping of PeerId -> Role. Subclasses get notified of changes and can do their
29 abstract class AbstractPeerRoleTracker {
31 private static final Logger LOG = LoggerFactory.getLogger(AbstractPeerRoleTracker.class);
33 public void onDataTreeChanged(final DataTreeCandidateNode change, final YangInstanceIdentifier peerPath) {
34 LOG.debug("Data Changed for Peer role {} path {}", change, peerPath);
37 final Optional<NormalizedNode<?, ?>> maybePeerRole = change.getDataAfter();
39 if (maybePeerRole.isPresent()) {
40 final LeafNode<?> peerRoleLeaf = (LeafNode<?>) maybePeerRole.get();
41 // We could go for a codec, but this is simpler and faster
42 role = PeerRole.valueOf(BindingMapping.getClassName((String) peerRoleLeaf.getValue()));
46 peerRoleChanged(peerPath, role);
49 static final NodeIdentifier PEER_ROLE_NID = new NodeIdentifier(QName.cachedReference(QName.create(Peer.QNAME, "peer-role")));
51 protected AbstractPeerRoleTracker() {
55 * Invoked whenever a peer role changes.
57 * @param peerPath Peer's path
58 * @param role Peer's new role, null indicates the peer has disappeared.
60 protected abstract void peerRoleChanged(@Nonnull YangInstanceIdentifier peerPath, @Nullable PeerRole role);