vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/intervpnlink/InterVpnLinkNodeAddTask.java

   1 /*
   2  * Copyright (c) 2016 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.vpnmanager.intervpnlink;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import java.math.BigInteger;
  13 import java.util.ArrayList;
  14 import java.util.Collections;
  15 import java.util.List;
  16 import java.util.concurrent.Callable;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  21 import org.opendaylight.netvirt.vpnmanager.VpnFootprintService;
  22 import org.opendaylight.netvirt.vpnmanager.VpnUtil;
  23 import org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkCache;
  24 import org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkDataComposite;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.InterVpnLinkState;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.InterVpnLinkStateBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.inter.vpn.link.state.FirstEndpointState;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.inter.vpn.link.state.FirstEndpointStateBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.inter.vpn.link.state.SecondEndpointState;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.inter.vpn.link.state.SecondEndpointStateBuilder;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 /**
  35  * A task that, when a Node comes UP, checks if there are any InterVpnLink that
  36  * hasn't been instantiated in any DPN yet. This may happen if, for example,
  37  * there are no DPNs connected to controller by the time the InterVpnLink is
  38  * created.
  39  */
  40 public class InterVpnLinkNodeAddTask implements Callable<List<ListenableFuture<Void>>> {
  41     private static final Logger LOG = LoggerFactory.getLogger(InterVpnLinkNodeAddTask.class);
  42     private static final String NBR_OF_DPNS_PROPERTY_NAME = "vpnservice.intervpnlink.number.dpns";
  43
  44     private final DataBroker broker;
  45     private final BigInteger dpnId;
  46     private final IMdsalApiManager mdsalManager;
  47     private final VpnFootprintService vpnFootprintService;
  48     private final InterVpnLinkCache interVpnLinkCache;
  49
  50     public InterVpnLinkNodeAddTask(final DataBroker broker, final IMdsalApiManager mdsalMgr,
  51             final VpnFootprintService vpnFootprintService, final BigInteger dpnId,
  52             final InterVpnLinkCache interVpnLinkCache) {
  53         this.broker = broker;
  54         this.mdsalManager = mdsalMgr;
  55         this.vpnFootprintService = vpnFootprintService;
  56         this.dpnId = dpnId;
  57         this.interVpnLinkCache = interVpnLinkCache;
  58     }
  59
  60     @Override
  61     public List<ListenableFuture<Void>> call() throws Exception {
  62         List<ListenableFuture<Void>> result = new ArrayList<>();
  63         // check if there is any inter-vpn-link in with erroneous state
  64         int numberOfDpns = Integer.getInteger(NBR_OF_DPNS_PROPERTY_NAME, 1);
  65
  66         List<BigInteger> firstDpnList = Collections.singletonList(this.dpnId);
  67         List<BigInteger> secondDpnList = firstDpnList;
  68         interVpnLinkCache.getAllInterVpnLinks().stream()
  69             .filter(i -> i.isComplete() && !i.isActive()
  70                         && shouldConfigureLinkIntoDpn(i.getInterVpnLinkState(), numberOfDpns))
  71             .forEach(i -> {
  72                 installLPortDispatcherTable(i.getInterVpnLinkState(), firstDpnList, secondDpnList);
  73                 result.add(updateInterVpnLinkState(i.getInterVpnLinkState(), firstDpnList, secondDpnList,
  74                                                    numberOfDpns));
  75             });
  76
  77         return result;
  78     }
  79
  80     private boolean shouldConfigureLinkIntoDpn(InterVpnLinkState interVpnLinkState, int numberOfDpns) {
  81
  82         if (interVpnLinkState.getFirstEndpointState().getDpId() == null
  83                  || interVpnLinkState.getFirstEndpointState().getDpId().isEmpty()
  84             || interVpnLinkState.getSecondEndpointState().getDpId() == null
  85                     || interVpnLinkState.getSecondEndpointState().getDpId().isEmpty()) {
  86             return true;
  87         } else if (!interVpnLinkState.getFirstEndpointState().getDpId().contains(dpnId)
  88             && !interVpnLinkState.getSecondEndpointState().getDpId().contains(dpnId)
  89             && interVpnLinkState.getFirstEndpointState().getDpId().size() < numberOfDpns) {
  90             return true;
  91         } else {
  92             return false;
  93         }
  94     }
  95
  96     private ListenableFuture<Void>
  97         updateInterVpnLinkState(InterVpnLinkState interVpnLinkState, List<BigInteger> firstDpnList,
  98                                 List<BigInteger> secondDpnList, int numberOfDpns) {
  99
 100         FirstEndpointState firstEndPointState =
 101             new FirstEndpointStateBuilder(interVpnLinkState.getFirstEndpointState()).setDpId(firstDpnList).build();
 102         SecondEndpointState secondEndPointState =
 103             new SecondEndpointStateBuilder(interVpnLinkState.getSecondEndpointState()).setDpId(secondDpnList).build();
 104         InterVpnLinkState newInterVpnLinkState =
 105             new InterVpnLinkStateBuilder(interVpnLinkState).setState(InterVpnLinkState.State.Active)
 106                     .setFirstEndpointState(firstEndPointState).setSecondEndpointState(secondEndPointState)
 107                     .build();
 108         WriteTransaction tx = broker.newWriteOnlyTransaction();
 109         tx.merge(LogicalDatastoreType.CONFIGURATION,
 110             InterVpnLinkUtil.getInterVpnLinkStateIid(interVpnLinkState.getInterVpnLinkName()), newInterVpnLinkState,
 111             true);
 112         return tx.submit();
 113     }
 114
 115     private void installLPortDispatcherTable(InterVpnLinkState interVpnLinkState, List<BigInteger> firstDpnList,
 116                                              List<BigInteger> secondDpnList) {
 117         String ivpnLinkName = interVpnLinkState.getKey().getInterVpnLinkName();
 118         Optional<InterVpnLinkDataComposite> optVpnLink = interVpnLinkCache.getInterVpnLinkByName(ivpnLinkName);
 119         if (!optVpnLink.isPresent()) {
 120             LOG.warn("installLPortDispatcherTable: Could not find interVpnLink {}", ivpnLinkName);
 121             return;
 122         }
 123
 124         InterVpnLinkDataComposite vpnLink = optVpnLink.get();
 125         Optional<Long> opt1stEndpointLportTag = vpnLink.getFirstEndpointLportTag();
 126         if (!opt1stEndpointLportTag.isPresent()) {
 127             LOG.warn("installLPortDispatcherTable: Could not find LPortTag for 1stEnpoint in InterVpnLink {}",
 128                      ivpnLinkName);
 129             return;
 130         }
 131
 132         Optional<Long> opt2ndEndpointLportTag = vpnLink.getSecondEndpointLportTag();
 133         if (!opt2ndEndpointLportTag.isPresent()) {
 134             LOG.warn("installLPortDispatcherTable: Could not find LPortTag for 2ndEnpoint in InterVpnLink {}",
 135                      ivpnLinkName);
 136             return;
 137         }
 138
 139         String firstEndpointVpnUuid = vpnLink.getFirstEndpointVpnUuid().get();
 140         String secondEndpointVpnUuid = vpnLink.getSecondEndpointVpnUuid().get();
 141         // Note that in the DPN of the firstEndpoint we install the lportTag of the secondEndpoint and viceversa
 142         String vpn1PrimaryRd = VpnUtil.getPrimaryRd(broker, firstEndpointVpnUuid);
 143         String vpn2PrimaryRd = VpnUtil.getPrimaryRd(broker, secondEndpointVpnUuid);
 144         if (!VpnUtil.isVpnPendingDelete(broker, vpn1PrimaryRd)
 145                 && !VpnUtil.isVpnPendingDelete(broker, vpn2PrimaryRd)) {
 146             InterVpnLinkUtil.installLPortDispatcherTableFlow(broker, mdsalManager, ivpnLinkName, firstDpnList,
 147                     secondEndpointVpnUuid, opt2ndEndpointLportTag.get());
 148             InterVpnLinkUtil.installLPortDispatcherTableFlow(broker, mdsalManager, ivpnLinkName, secondDpnList,
 149                     firstEndpointVpnUuid, opt1stEndpointLportTag.get());
 150             // Update the VPN -> DPNs Map.
 151             // Note: when a set of DPNs is calculated for Vpn1, these DPNs are added to the VpnToDpn map of Vpn2. Why?
 152             // because we do the handover from Vpn1 to Vpn2 in those DPNs, so in those DPNs we must know how to reach
 153             // to Vpn2 targets. If new Vpn2 targets are added later, the Fib will be maintained in these DPNs even if
 154             // Vpn2 is not physically present there.
 155             InterVpnLinkUtil.updateVpnFootprint(vpnFootprintService, secondEndpointVpnUuid, vpn1PrimaryRd,
 156                     firstDpnList);
 157             InterVpnLinkUtil.updateVpnFootprint(vpnFootprintService, firstEndpointVpnUuid, vpn2PrimaryRd,
 158                     secondDpnList);
 159         }
 160     }
 161 }