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.protocol.bgp.rib.impl;
10 import com.google.common.base.Preconditions;
11 import com.google.common.base.Verify;
12 import com.google.common.net.InetAddresses;
13 import java.util.Arrays;
14 import java.util.Collection;
15 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
17 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
18 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
19 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
20 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
21 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
22 import org.opendaylight.protocol.bgp.openconfig.spi.BGPConfigModuleTracker;
23 import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils;
24 import org.opendaylight.protocol.bgp.rib.spi.RouterIds;
25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Ipv4Address;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.ApplicationRibId;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer;
29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.peer.AdjRibIn;
30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.Tables;
31 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
32 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
33 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
34 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
35 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
36 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
37 import org.slf4j.Logger;
38 import org.slf4j.LoggerFactory;
41 * Application Peer is a special case of BGP peer. It serves as an interface
42 * for user to advertise user routes to ODL and through ODL to other BGP peers.
44 * This peer has it's own RIB, where it stores all user routes. This RIB is
45 * located in configurational datastore. Routes are added through RESTCONF.
47 * They are then processed as routes from any other peer, through AdjRib,
48 * EffectiveRib,LocRib and if they are advertised further, through AdjRibOut.
50 * For purposed of import policies such as Best Path Selection, application
51 * peer needs to have a BGP-ID that is configurable.
53 public class ApplicationPeer implements AutoCloseable, org.opendaylight.protocol.bgp.rib.spi.Peer, DOMDataTreeChangeListener, TransactionChainListener {
55 private static final Logger LOG = LoggerFactory.getLogger(ApplicationPeer.class);
57 private final byte[] rawIdentifier;
58 private final String name;
59 private final YangInstanceIdentifier adjRibsInId;
60 private final DOMTransactionChain chain;
61 private final DOMTransactionChain writerChain;
62 private final BGPConfigModuleTracker moduleTracker;
64 private AdjRibInWriter writer;
66 public ApplicationPeer(final ApplicationRibId applicationRibId, final Ipv4Address ipAddress, final RIBImpl rib, final BGPConfigModuleTracker
68 this.name = applicationRibId.getValue().toString();
69 final RIBImpl targetRib = Preconditions.checkNotNull(rib);
70 this.rawIdentifier = InetAddresses.forString(ipAddress.getValue()).getAddress();
71 final NodeIdentifierWithPredicates peerId = IdentifierUtils.domPeerId(RouterIds.createPeerId(ipAddress));
72 this.adjRibsInId = targetRib.getYangRibId().node(Peer.QNAME).node(peerId).node(AdjRibIn.QNAME).node(Tables.QNAME);
73 this.chain = targetRib.createPeerChain(this);
74 this.writerChain = targetRib.createPeerChain(this);
75 this.writer = AdjRibInWriter.create(targetRib.getYangRibId(), PeerRole.Internal, this.writerChain);
76 this.writer = this.writer.transform(RouterIds.createPeerId(ipAddress), targetRib.getRibSupportContext(), targetRib.getLocalTablesKeys(), true);
77 this.moduleTracker = moduleTracker;
78 if (moduleTracker != null) {
79 moduleTracker.onInstanceCreate();
83 public ApplicationPeer(final ApplicationRibId applicationRibId, final Ipv4Address bgpPeerId, final RIBImpl targetRibDependency) {
84 this(applicationRibId, bgpPeerId, targetRibDependency, null);
88 * Routes come from application RIB that is identified by (configurable) name.
89 * Each route is pushed into AdjRibsInWriter with it's whole context. In this
90 * method, it doesn't matter if the routes are removed or added, this will
91 * be determined in LocRib.
94 public void onDataTreeChanged(final Collection<DataTreeCandidate> changes) {
95 final DOMDataWriteTransaction tx = this.chain.newWriteOnlyTransaction();
96 LOG.debug("Received data change to ApplicationRib {}", changes);
97 for (final DataTreeCandidate tc : changes) {
98 LOG.debug("Modification Type {}", tc.getRootNode().getModificationType());
99 final YangInstanceIdentifier path = tc.getRootPath();
100 final PathArgument lastArg = path.getLastPathArgument();
101 Verify.verify(lastArg instanceof NodeIdentifierWithPredicates, "Unexpected type %s in path %s", lastArg.getClass(), path);
102 final NodeIdentifierWithPredicates tableKey = (NodeIdentifierWithPredicates) lastArg;
103 for (final DataTreeCandidateNode child : tc.getRootNode().getChildNodes()) {
104 final PathArgument childIdentifier = child.getIdentifier();
105 final YangInstanceIdentifier tableId = this.adjRibsInId.node(tableKey).node(childIdentifier);
106 switch (child.getModificationType()) {
108 LOG.trace("App peer -> AdjRibsIn path delete: {}", childIdentifier);
109 tx.delete(LogicalDatastoreType.OPERATIONAL, tableId);
114 case SUBTREE_MODIFIED:
115 if (EffectiveRibInWriter.TABLE_ROUTES.equals(childIdentifier)) {
116 processRoutesTable(child, tableId, tx, tableId);
120 if (child.getDataAfter().isPresent()) {
121 final NormalizedNode<?,?> dataAfter = child.getDataAfter().get();
122 LOG.trace("App peer -> AdjRibsIn path : {}", tableId);
123 LOG.trace("App peer -> AdjRibsIn data : {}", dataAfter);
124 tx.put(LogicalDatastoreType.OPERATIONAL, tableId, dataAfter);
136 * Applies modification under table routes based on modification type instead of only put. BUG 4438
140 * @param routeTableIdentifier
142 private void processRoutesTable(final DataTreeCandidateNode node, final YangInstanceIdentifier identifier,
143 final DOMDataWriteTransaction tx, final YangInstanceIdentifier routeTableIdentifier) {
144 for (final DataTreeCandidateNode child : node.getChildNodes()) {
145 final YangInstanceIdentifier childIdentifier = identifier.node(child.getIdentifier());
146 switch (child.getModificationType()) {
148 LOG.trace("App peer -> AdjRibsIn path delete: {}", childIdentifier);
149 tx.delete(LogicalDatastoreType.OPERATIONAL, childIdentifier);
154 case SUBTREE_MODIFIED:
155 //For be ables to use DELETE when we remove specific routes as we do when we remove the whole routes,
156 // we need to go deeper three levels
157 if (!routeTableIdentifier.equals(childIdentifier.getParent().getParent().getParent())) {
158 processRoutesTable(child, childIdentifier, tx, routeTableIdentifier);
162 if (child.getDataAfter().isPresent()) {
163 final NormalizedNode<?,?> dataAfter = child.getDataAfter().get();
164 LOG.trace("App peer -> AdjRibsIn path : {}", childIdentifier);
165 LOG.trace("App peer -> AdjRibsIn data : {}", dataAfter);
166 tx.put(LogicalDatastoreType.OPERATIONAL, childIdentifier, dataAfter);
176 public String getName() {
181 public void close() {
182 this.writer.removePeer();
184 this.writerChain.close();
185 if (this.moduleTracker != null) {
186 this.moduleTracker.onInstanceClose();
191 public byte[] getRawIdentifier() {
192 return Arrays.copyOf(this.rawIdentifier, this.rawIdentifier.length);
196 public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction,
197 final Throwable cause) {
198 LOG.error("Transaction chain failed.", cause);
202 public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
203 LOG.debug("Transaction chain {} successfull.", chain);