2 * Copyright (c) 2013 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.bgpcep.bgp.topology.provider;
10 import com.google.common.base.Optional;
11 import java.util.ArrayList;
12 import java.util.concurrent.ExecutionException;
13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
14 import org.opendaylight.controller.md.sal.binding.api.ReadTransaction;
15 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
17 import org.opendaylight.protocol.bgp.rib.RibReference;
18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpPrefix;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.Route;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.route.Attributes;
21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.CNextHop;
22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv4NextHopCase;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.Ipv6NextHopCase;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.ipv4.next.hop._case.Ipv4NextHop;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.next.hop.c.next.hop.ipv6.next.hop._case.Ipv6NextHop;
26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
27 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
28 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
30 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypesBuilder;
31 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.Node1;
32 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.Node1Builder;
33 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.IgpNodeAttributesBuilder;
34 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.Prefix;
35 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.PrefixBuilder;
36 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.igp.node.attributes.PrefixKey;
37 import org.opendaylight.yangtools.yang.binding.DataObject;
38 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
39 import org.slf4j.Logger;
40 import org.slf4j.LoggerFactory;
45 abstract class AbstractReachabilityTopologyBuilder<T extends Route> extends AbstractTopologyBuilder<T> {
46 private static final Logger LOG = LoggerFactory.getLogger(AbstractReachabilityTopologyBuilder.class);
48 protected AbstractReachabilityTopologyBuilder(final DataBroker dataProvider, final RibReference locRibReference,
49 final TopologyId topologyId, final Class<T> idClass) {
50 super(dataProvider, locRibReference, topologyId, new TopologyTypesBuilder().build(), idClass);
53 private NodeId advertizingNode(final Attributes attrs) {
54 final CNextHop nh = attrs.getCNextHop();
55 if (nh instanceof Ipv4NextHopCase) {
56 final Ipv4NextHop ipv4 = ((Ipv4NextHopCase) nh).getIpv4NextHop();
58 return new NodeId(ipv4.getGlobal().getValue());
59 } else if (nh instanceof Ipv6NextHopCase) {
60 final Ipv6NextHop ipv6 = ((Ipv6NextHopCase) nh).getIpv6NextHop();
62 return new NodeId(ipv6.getGlobal().getValue());
64 LOG.warn("Unhandled next hop class {}", nh.getImplementedInterface());
69 private InstanceIdentifier<Node1> nodeInstanceId(final NodeId ni) {
70 return getInstanceIdentifier().builder().child(Node.class, new NodeKey(ni)).augmentation(Node1.class).toInstance();
73 private static <T extends DataObject> T read(final ReadTransaction t, final InstanceIdentifier<T> id) {
76 o = t.read(LogicalDatastoreType.OPERATIONAL, id).get();
77 } catch (InterruptedException | ExecutionException e) {
78 LOG.warn("Failed to read {}, assuming non-existent", id, e);
85 private InstanceIdentifier<Node1> ensureNodePresent(final ReadWriteTransaction trans, final NodeId ni) {
86 final InstanceIdentifier<Node1> nii = nodeInstanceId(ni);
87 LOG.debug("Looking for pre-existing node at {}", nii);
89 if (read(trans, nii) == null) {
90 LOG.debug("Create a new node at {}", nii);
91 trans.put(LogicalDatastoreType.OPERATIONAL, nii, new Node1Builder().setIgpNodeAttributes(
92 new IgpNodeAttributesBuilder().setPrefix(new ArrayList<Prefix>()).build()).build());
98 private void removeEmptyNode(final ReadWriteTransaction trans, final InstanceIdentifier<Node1> nii) {
99 final Node1 node = read(trans, nii);
100 if (node != null && node.getIgpNodeAttributes().getPrefix().isEmpty()) {
101 trans.delete(LogicalDatastoreType.OPERATIONAL, nii);
105 protected abstract Attributes getAttributes(final T value);
107 protected abstract IpPrefix getPrefix(final T value);
110 protected final void createObject(final ReadWriteTransaction trans, final InstanceIdentifier<T> id, final T value) {
111 final NodeId ni = advertizingNode(getAttributes(value));
112 final InstanceIdentifier<Node1> nii = ensureNodePresent(trans, ni);
114 final IpPrefix prefix = getPrefix(value);
115 final PrefixKey pk = new PrefixKey(prefix);
117 trans.put(LogicalDatastoreType.OPERATIONAL,
119 org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.IgpNodeAttributes.class).child(
120 Prefix.class, pk).toInstance(), new PrefixBuilder().setKey(pk).setPrefix(prefix).build());
124 protected final void removeObject(final ReadWriteTransaction trans, final InstanceIdentifier<T> id, final T value) {
125 final NodeId ni = advertizingNode(getAttributes(value));
126 final InstanceIdentifier<Node1> nii = nodeInstanceId(ni);
128 final IpPrefix prefix = getPrefix(value);
129 final PrefixKey pk = new PrefixKey(prefix);
131 trans.delete(LogicalDatastoreType.OPERATIONAL, nii.builder().child(
132 org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.nt.l3.unicast.igp.topology.rev131021.igp.node.attributes.IgpNodeAttributes.class).child(
133 Prefix.class, pk).toInstance());
135 removeEmptyNode(trans, nii);