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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.bgp.controller.impl;
import java.util.Map;
import java.util.TreeMap;
import org.onosproject.bgpio.protocol.BgpLSNlri;
import org.onosproject.bgpio.protocol.linkstate.BgpLinkLSIdentifier;
import org.onosproject.bgpio.protocol.linkstate.BgpLinkLsNlriVer4;
import org.onosproject.bgpio.protocol.linkstate.BgpNodeLSIdentifier;
import org.onosproject.bgpio.protocol.linkstate.BgpNodeLSNlriVer4;
import org.onosproject.bgpio.protocol.linkstate.BgpPrefixIPv4LSNlriVer4;
import org.onosproject.bgpio.protocol.linkstate.BgpPrefixLSIdentifier;
import org.onosproject.bgpio.protocol.linkstate.PathAttrNlriDetails;
import org.onosproject.bgpio.types.RouteDistinguisher;
import com.google.common.base.MoreObjects;
/**
* Implementation of Adj-RIB-In with VPN for each peer.
*/
public class VpnAdjRibIn {
private Map<BgpNodeLSIdentifier, PathAttrNlriDetails> nodeTree = new TreeMap<>();
private Map<BgpLinkLSIdentifier, PathAttrNlriDetails> linkTree = new TreeMap<>();
private Map<BgpPrefixLSIdentifier, PathAttrNlriDetails> prefixTree = new TreeMap<>();
private Map<RouteDistinguisher, Map<BgpNodeLSIdentifier, PathAttrNlriDetails>> vpnNodeTree
= new TreeMap<>();
private Map<RouteDistinguisher, Map<BgpLinkLSIdentifier, PathAttrNlriDetails>> vpnLinkTree
= new TreeMap<>();
private Map<RouteDistinguisher, Map<BgpPrefixLSIdentifier, PathAttrNlriDetails>> vpnPrefixTree
= new TreeMap<>();
/**
* Returns the adjacency node.
*
* @return node adjacency RIB node
*/
public Map<BgpNodeLSIdentifier, PathAttrNlriDetails> nodeTree() {
return nodeTree;
}
/**
* Returns the adjacency link.
*
* @return link adjacency RIB node
*/
public Map<BgpLinkLSIdentifier, PathAttrNlriDetails> linkTree() {
return linkTree;
}
/**
* Returns the adjacency prefix.
*
* @return prefix adjacency RIB node
*/
public Map<BgpPrefixLSIdentifier, PathAttrNlriDetails> prefixTree() {
return prefixTree;
}
/**
* Returns the adjacency vpnNode.
*
* @return vpnNode adjacency RIB node
*/
public Map<RouteDistinguisher, Map<BgpNodeLSIdentifier, PathAttrNlriDetails>> vpnNodeTree() {
return vpnNodeTree;
}
/**
* Returns the adjacency vpnLink.
*
* @return vpnLink adjacency RIB node
*/
public Map<RouteDistinguisher, Map<BgpLinkLSIdentifier, PathAttrNlriDetails>> vpnLinkTree() {
return vpnLinkTree;
}
/**
* Returns the adjacency vpnPrefix.
*
* @return vpnPrefix adjacency RIB node
*/
public Map<RouteDistinguisher, Map<BgpPrefixLSIdentifier, PathAttrNlriDetails>> vpnPrefixTree() {
return vpnPrefixTree;
}
/**
* Update vpn nlri identifier into the tree if nlri identifier exists in tree otherwise add this to the tree.
*
* @param nlri NLRI info
* @param details has pathattribute , protocolID and identifier
*/
public void add(BgpLSNlri nlri, PathAttrNlriDetails details) {
if (nlri instanceof BgpNodeLSNlriVer4) {
BgpNodeLSIdentifier nodeLSIdentifier = ((BgpNodeLSNlriVer4) nlri).getLocalNodeDescriptors();
if (nodeTree.containsKey(nodeLSIdentifier)) {
nodeTree.replace(nodeLSIdentifier, details);
} else {
nodeTree.put(nodeLSIdentifier, details);
}
} else if (nlri instanceof BgpLinkLsNlriVer4) {
BgpLinkLSIdentifier linkLSIdentifier = ((BgpLinkLsNlriVer4) nlri).getLinkIdentifier();
if (linkTree.containsKey(linkLSIdentifier)) {
linkTree.replace(linkLSIdentifier, details);
} else {
linkTree.put(linkLSIdentifier, details);
}
} else if (nlri instanceof BgpPrefixIPv4LSNlriVer4) {
BgpPrefixLSIdentifier prefixIdentifier = ((BgpPrefixIPv4LSNlriVer4) nlri).getPrefixIdentifier();
if (prefixTree.containsKey(prefixIdentifier)) {
prefixTree.replace(prefixIdentifier, details);
} else {
prefixTree.put(prefixIdentifier, details);
}
}
}
/**
* Update nlri identifier mapped with route distinguisher if it exists in tree otherwise add nlri infomation mapped
* to respective route distinguisher in tree.
*
* @param nlri NLRI info
* @param details has pathattribute , protocolID and identifier
* @param routeDistinguisher unique for for each vpn
*/
public void addVpn(BgpLSNlri nlri, PathAttrNlriDetails details, RouteDistinguisher routeDistinguisher) {
add(nlri, details);
if (nlri instanceof BgpNodeLSNlriVer4) {
if (!vpnNodeTree.containsKey(routeDistinguisher)) {
vpnNodeTree.put(routeDistinguisher, nodeTree);
}
} else if (nlri instanceof BgpLinkLsNlriVer4) {
if (!vpnLinkTree.containsKey(routeDistinguisher)) {
vpnLinkTree.put(routeDistinguisher, linkTree);
}
} else if (nlri instanceof BgpPrefixIPv4LSNlriVer4) {
if (!vpnPrefixTree.containsKey(routeDistinguisher)) {
vpnPrefixTree.put(routeDistinguisher, prefixTree);
}
}
}
/**
* Removes vpn nlri identifier mapped to route distinguisher if it exists in tree.
*
* @param nlri NLRI Info
* @param routeDistinguisher unique for for each vpn
*/
public void removeVpn(BgpLSNlri nlri, RouteDistinguisher routeDistinguisher) {
if (nlri instanceof BgpNodeLSNlriVer4) {
if (vpnNodeTree.containsKey(routeDistinguisher)) {
BgpNodeLSIdentifier nodeLSIdentifier = ((BgpNodeLSNlriVer4) nlri).getLocalNodeDescriptors();
if (nodeTree.containsKey(nodeLSIdentifier)) {
nodeTree.remove(nodeLSIdentifier);
}
if ((vpnNodeTree.get(routeDistinguisher)).isEmpty()) {
vpnNodeTree.remove(routeDistinguisher);
}
}
} else if (nlri instanceof BgpLinkLsNlriVer4) {
if (vpnLinkTree.containsKey(routeDistinguisher)) {
BgpLinkLSIdentifier linkLSIdentifier = ((BgpLinkLsNlriVer4) nlri).getLinkIdentifier();
if (linkTree.containsKey(linkLSIdentifier)) {
linkTree.remove(linkLSIdentifier);
}
if ((vpnLinkTree.get(routeDistinguisher)).isEmpty()) {
vpnLinkTree.remove(routeDistinguisher);
}
}
} else if (nlri instanceof BgpPrefixIPv4LSNlriVer4) {
if (vpnPrefixTree.containsKey(routeDistinguisher)) {
BgpPrefixLSIdentifier prefixIdentifier = ((BgpPrefixIPv4LSNlriVer4) nlri).getPrefixIdentifier();
if (prefixTree.containsKey(prefixIdentifier)) {
prefixTree.remove(prefixIdentifier);
}
if ((vpnPrefixTree.get(routeDistinguisher)).isEmpty()) {
vpnPrefixTree.remove(routeDistinguisher);
}
}
}
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.omitNullValues().add("nodeTree", nodeTree)
.add("linkTree", linkTree)
.add("prefixTree", prefixTree)
.add("vpnNodeTree", vpnNodeTree)
.add("vpnLinkTree", vpnLinkTree)
.add("vpnPrefixTree", vpnPrefixTree)
.toString();
}
}
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