vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/evpn/utils/EvpnUtils.java

   1 /*
   2  * Copyright © 2017 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.netvirt.elan.evpn.utils;
   9
  10
  11 import com.google.common.base.Optional;
  12
  13 import java.math.BigInteger;
  14 import java.util.List;
  15 import java.util.concurrent.ExecutionException;
  16 import java.util.concurrent.Future;
  17 import java.util.function.BiPredicate;
  18
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.genius.interfacemanager.globals.InterfaceInfo;
  21 import org.opendaylight.genius.interfacemanager.interfaces.IInterfaceManager;
  22 import org.opendaylight.netvirt.bgpmanager.api.IBgpManager;
  23 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  24 import org.opendaylight.netvirt.vpnmanager.api.IVpnManager;
  25 import org.opendaylight.yang.gen.v1.urn.huawei.params.xml.ns.yang.l3vpn.rev140815.vpn.instances.VpnInstance;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rpcs.rev160406.GetDpnEndpointIpsInputBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rpcs.rev160406.GetDpnEndpointIpsOutput;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.itm.rpcs.rev160406.ItmRpcService;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.EvpnAugmentation;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.forwarding.entries.MacEntry;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.fibmanager.rev150330.VrfEntryBase;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.neutronvpn.rev150602.neutron.vpn.portip.port.data.VpnPortipToPort;
  35 import org.opendaylight.yangtools.yang.common.RpcResult;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 public class EvpnUtils {
  40
  41     private static final Logger LOG = LoggerFactory.getLogger(EvpnUtils.class);
  42
  43     private final BiPredicate<String, String> isNetAttach = (var1, var2) -> ((var1 == null) && (var2 != null));
  44     private final BiPredicate<String, String> isNetDetach = (var1, var2) -> ((var1 != null) && (var2 == null));
  45     private final DataBroker broker;
  46     private final IInterfaceManager interfaceManager;
  47     private final ElanUtils elanUtils;
  48     private final ItmRpcService itmRpcService;
  49
  50     private volatile IBgpManager bgpManager;
  51     private volatile IVpnManager vpnManager;
  52
  53     public EvpnUtils(DataBroker broker, IInterfaceManager interfaceManager,
  54                      ElanUtils elanUtils, ItmRpcService itmRpcService) {
  55         this.broker = broker;
  56         this.interfaceManager = interfaceManager;
  57         this.elanUtils = elanUtils;
  58         this.itmRpcService = itmRpcService;
  59     }
  60
  61     public void init() {
  62     }
  63
  64     public void close() {
  65     }
  66
  67     public void setVpnManager(IVpnManager vpnManager) {
  68         this.vpnManager = vpnManager;
  69     }
  70
  71     public void setBgpManager(IBgpManager bgpManager) {
  72         this.bgpManager = bgpManager;
  73     }
  74
  75     public boolean isWithdrawEvpnRT2Routes(EvpnAugmentation original, EvpnAugmentation update) {
  76         return isNetDetach.test(original.getEvpnName(), update.getEvpnName());
  77     }
  78
  79     public boolean isAdvertiseEvpnRT2Routes(EvpnAugmentation original, EvpnAugmentation update) {
  80         return isNetAttach.test(original.getEvpnName(), update.getEvpnName())
  81                 || isNetAttach.test(original.getL3vpnName(), update.getL3vpnName());
  82     }
  83
  84     @SuppressWarnings("checkstyle:IllegalCatch")
  85     public void advertiseEvpnRT2Routes(EvpnAugmentation evpnAugmentation, String elanName)  {
  86         if (evpnAugmentation == null || evpnAugmentation.getEvpnName() == null) {
  87             return;
  88         }
  89         String evpnName = evpnAugmentation.getEvpnName();
  90         List<MacEntry> macEntries = elanUtils.getElanMacEntries(elanName);
  91         if (macEntries == null || macEntries.isEmpty()) {
  92             LOG.trace("advertiseEvpnRT2Routes no elan mac entries found for {}", elanName);
  93             return;
  94         }
  95         String rd = vpnManager.getVpnRd(broker, evpnName);
  96         ElanInstance elanInfo = elanUtils.getElanInstanceByName(broker, elanName);
  97         macEntries.forEach((macEntry) -> {
  98             InterfaceInfo interfaceInfo = interfaceManager.getInterfaceInfo(macEntry.getInterface());
  99             advertisePrefix(elanInfo, rd, macEntry.getMacAddress().getValue(),
 100                     macEntry.getIpPrefix().getIpv4Address().getValue(),
 101                     interfaceInfo.getInterfaceName(), interfaceInfo.getDpId());
 102         });
 103     }
 104
 105     public String getEndpointIpAddressForDPN(BigInteger dpnId) {
 106
 107         Future<RpcResult<GetDpnEndpointIpsOutput>> result = itmRpcService.getDpnEndpointIps(
 108                 new GetDpnEndpointIpsInputBuilder()
 109                         .setSourceDpid(dpnId)
 110                         .build());
 111         RpcResult<GetDpnEndpointIpsOutput> rpcResult = null;
 112         try {
 113             rpcResult = result.get();
 114         } catch (InterruptedException e) {
 115             LOG.error("getnextHopIpFromRpcOutput : InterruptedException for dpnid {}", e, dpnId);
 116             return null;
 117         } catch (ExecutionException e) {
 118             LOG.error("getnextHopIpFromRpcOutput : ExecutionException for dpnid {}", e, dpnId);
 119             return null;
 120         }
 121         if (!rpcResult.isSuccessful()) {
 122             LOG.warn("RPC Call to getDpnEndpointIps returned with Errors {}", rpcResult.getErrors());
 123             return null;
 124         }
 125
 126         List<IpAddress> nexthopIpList = rpcResult.getResult().getNexthopipList();
 127         return nexthopIpList.get(0).getIpv4Address().toString();
 128     }
 129
 130     public Optional<String> getGatewayMacAddressForInterface(String vpnName, String ifName, String ipAddress) {
 131         VpnPortipToPort gwPort = vpnManager.getNeutronPortFromVpnPortFixedIp(broker, vpnName, ipAddress);
 132         return Optional.of((gwPort != null && gwPort.isSubnetIp())
 133                 ? gwPort.getMacAddress()
 134                 : interfaceManager.getInterfaceInfoFromOperationalDataStore(ifName).getMacAddress());
 135     }
 136
 137     public String getL3vpnNameFromElan(ElanInstance elanInfo) {
 138         EvpnAugmentation evpnAugmentation = elanInfo.getAugmentation(EvpnAugmentation.class);
 139         return evpnAugmentation != null ? evpnAugmentation.getL3vpnName() : null;
 140     }
 141
 142     public static String getEvpnNameFromElan(ElanInstance elanInfo) {
 143         EvpnAugmentation evpnAugmentation = elanInfo.getAugmentation(EvpnAugmentation.class);
 144         return evpnAugmentation != null ? evpnAugmentation.getEvpnName() : null;
 145     }
 146
 147     public String getEVpnRd(ElanInstance elanInfo) {
 148         String evpnName = getEvpnNameFromElan(elanInfo);
 149         if (evpnName == null) {
 150             LOG.error("getEVpnRd : evpnName is NULL for elanInfo {}", elanInfo);
 151             return null;
 152         }
 153         return vpnManager.getVpnRd(broker, evpnName);
 154     }
 155
 156     public void advertisePrefix(ElanInstance elanInfo, String macAddress, String prefix,
 157                                  String interfaceName, BigInteger dpnId) {
 158         String rd = getEVpnRd(elanInfo);
 159         advertisePrefix(elanInfo, rd, macAddress, prefix, interfaceName, dpnId);
 160     }
 161
 162     @SuppressWarnings("checkstyle:IllegalCatch")
 163     private void advertisePrefix(ElanInstance elanInfo, String rd,
 164                                  String macAddress, String prefix, String interfaceName, BigInteger dpnId) {
 165         if (rd == null) {
 166             LOG.error("advertisePrefix : rd is NULL for elanInfo {}, macAddress {}", elanInfo, macAddress);
 167             return;
 168         }
 169         String nextHop = getEndpointIpAddressForDPN(dpnId);
 170         if (nextHop == null) {
 171             LOG.error("Failed to get the dpn tep ip for dpn {}", dpnId);
 172             return;
 173         }
 174         int vpnLabel = 0;
 175         long l2vni = elanInfo.getSegmentationId();
 176         long l3vni = 0;
 177         String gatewayMacAddr = null;
 178         String l3VpName = getL3vpnNameFromElan(elanInfo);
 179         if (l3VpName != null) {
 180             VpnInstance l3VpnInstance = vpnManager.getVpnInstance(broker, l3VpName);
 181             l3vni = l3VpnInstance.getL3vni();
 182             Optional<String> gatewayMac = getGatewayMacAddressForInterface(l3VpName, interfaceName, prefix);
 183             gatewayMacAddr = gatewayMac.isPresent() ? gatewayMac.get() : null;
 184         }
 185         LOG.info("Advertising routes with rd {},  macAddress {}, prefix {}, nextHop {},"
 186                         + " vpnLabel {}, l3vni {}, l2vni {}, gatewayMac {}", rd, macAddress, prefix, nextHop,
 187                 vpnLabel, l3vni, l2vni, gatewayMacAddr);
 188         try {
 189             bgpManager.advertisePrefix(rd, macAddress, prefix, nextHop,
 190                     VrfEntryBase.EncapType.Vxlan, vpnLabel, l3vni, l2vni, gatewayMacAddr);
 191         } catch (Exception e) {
 192             LOG.error("Failed to advertisePrefix", e);
 193         }
 194     }
 195
 196     public void advertisePrefix(ElanInstance elanInfo, MacEntry macEntry) {
 197         InterfaceInfo interfaceInfo = interfaceManager.getInterfaceInfo(macEntry.getInterface());
 198         advertisePrefix(elanInfo, macEntry.getMacAddress().getValue(),
 199                 macEntry.getIpPrefix().getIpv4Address().getValue(),
 200                 interfaceInfo.getInterfaceName(), interfaceInfo.getDpId());
 201     }
 202
 203     public void withdrawEvpnRT2Routes(EvpnAugmentation evpnAugmentation, String elanName) {
 204         List<MacEntry> macEntries = elanUtils.getElanMacEntries(elanName);
 205         if (macEntries == null || macEntries.isEmpty()) {
 206             LOG.trace("withdrawEvpnRT2Routes : macEntries  is empty for elan {} ", elanName);
 207             return;
 208         }
 209         ElanInstance elanInfo = ElanUtils.getElanInstanceByName(broker, elanName);
 210         String rd = getEVpnRd(elanInfo);
 211         if (rd == null) {
 212             return;
 213         }
 214         for (MacEntry macEntry : macEntries) {
 215             String prefix = macEntry.getIpPrefix().getIpv4Address().getValue();
 216             LOG.info("Withdrawing routes with rd {}, prefix {}", rd, prefix);
 217             bgpManager.withdrawPrefix(rd, prefix);
 218         }
 219     }
 220
 221     public void withdrawPrefix(ElanInstance elanInfo, String prefix) {
 222         String rd = getEVpnRd(elanInfo);
 223         if (rd == null) {
 224             return;
 225         }
 226         bgpManager.withdrawPrefix(rd, prefix);
 227     }
 228
 229     public void withdrawPrefix(ElanInstance elanInfo, MacEntry macEntry) {
 230         withdrawPrefix(elanInfo, macEntry.getIpPrefix().getIpv4Address().getValue());
 231     }
 232
 233 }