-/*
- * 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.protocol.bgp.rib.impl;
-
-import com.google.common.base.Optional;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.peer.SupportedTables;
-import org.opendaylight.yangtools.yang.binding.BindingMapping;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Maintains the mapping of PeerId -> Role. Subclasses get notified of changes and can do their
- * own thing.
- */
-abstract class AbstractPeerRoleTracker {
-
- private static final Logger LOG = LoggerFactory.getLogger(AbstractPeerRoleTracker.class);
-
- public void onDataTreeChanged(final DataTreeCandidateNode change, final YangInstanceIdentifier peerPath) {
- // Check for removal
- final Optional<NormalizedNode<?, ?>> maybePeerRole = change.getDataAfter();
- LOG.debug("Data Changed for Peer role {} path {}, dataBefore {}, dataAfter {}", change.getIdentifier(),
- peerPath , change.getDataBefore(), maybePeerRole);
-
- final PeerRole role;
- if (maybePeerRole.isPresent()) {
- final LeafNode<?> peerRoleLeaf = (LeafNode<?>) maybePeerRole.get();
- // We could go for a codec, but this is simpler and faster
- role = PeerRole.valueOf(BindingMapping.getClassName((String) peerRoleLeaf.getValue()));
- } else {
- role = null;
- }
- peerRoleChanged(peerPath, role);
- }
-
- static final NodeIdentifier PEER_ROLE_NID = new NodeIdentifier(QName.create(Peer.QNAME, "peer-role").intern());
- static final NodeIdentifier PEER_TABLES = new NodeIdentifier(SupportedTables.QNAME);
-
- protected AbstractPeerRoleTracker() {
- }
-
- /**
- * Invoked whenever a peer role changes.
- *
- * @param peerPath Peer's path
- * @param role Peer's new role, null indicates the peer has disappeared.
- */
- protected abstract void peerRoleChanged(@Nonnull YangInstanceIdentifier peerPath, @Nullable PeerRole role);
-}