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.infra.ManagedNewTransactionRunner;
  21 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  22 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
  23 import org.opendaylight.netvirt.vpnmanager.VpnFootprintService;
  24 import org.opendaylight.netvirt.vpnmanager.VpnUtil;
  25 import org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkCache;
  26 import org.opendaylight.netvirt.vpnmanager.api.intervpnlink.InterVpnLinkDataComposite;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.InterVpnLinkState;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.netvirt.inter.vpn.link.rev160311.inter.vpn.link.states.InterVpnLinkStateBuilder;
  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.FirstEndpointState;
  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.FirstEndpointStateBuilder;
  31 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;
  32 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;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 /**
  37  * A task that, when a Node comes UP, checks if there are any InterVpnLink that
  38  * hasn't been instantiated in any DPN yet. This may happen if, for example,
  39  * there are no DPNs connected to controller by the time the InterVpnLink is
  40  * created.
  41  */
  42 public class InterVpnLinkNodeAddTask implements Callable<List<ListenableFuture<Void>>> {
  43     private static final Logger LOG = LoggerFactory.getLogger(InterVpnLinkNodeAddTask.class);
  44     private static final String NBR_OF_DPNS_PROPERTY_NAME = "vpnservice.intervpnlink.number.dpns";
  45
  46     private final DataBroker broker;
  47     private final ManagedNewTransactionRunner txRunner;
  48     private final BigInteger dpnId;
  49     private final IMdsalApiManager mdsalManager;
  50     private final VpnFootprintService vpnFootprintService;
  51     private final InterVpnLinkCache interVpnLinkCache;
  52
  53     public InterVpnLinkNodeAddTask(final DataBroker broker, final IMdsalApiManager mdsalMgr,
  54             final VpnFootprintService vpnFootprintService, final BigInteger dpnId,
  55             final InterVpnLinkCache interVpnLinkCache) {
  56         this.broker = broker;
  57         this.txRunner = new ManagedNewTransactionRunnerImpl(broker);
  58         this.mdsalManager = mdsalMgr;
  59         this.vpnFootprintService = vpnFootprintService;
  60         this.dpnId = dpnId;
  61         this.interVpnLinkCache = interVpnLinkCache;
  62     }
  63
  64     @Override
  65     public List<ListenableFuture<Void>> call() {
  66         List<ListenableFuture<Void>> result = new ArrayList<>();
  67         // check if there is any inter-vpn-link in with erroneous state
  68         int numberOfDpns = Integer.getInteger(NBR_OF_DPNS_PROPERTY_NAME, 1);
  69
  70         List<BigInteger> firstDpnList = Collections.singletonList(this.dpnId);
  71         List<BigInteger> secondDpnList = firstDpnList;
  72         interVpnLinkCache.getAllInterVpnLinks().stream()
  73             .filter(i -> i.isComplete() && !i.isActive()
  74                         && shouldConfigureLinkIntoDpn(i.getInterVpnLinkState(), numberOfDpns))
  75             .forEach(i -> {
  76                 installLPortDispatcherTable(i.getInterVpnLinkState(), firstDpnList, secondDpnList);
  77                 result.add(updateInterVpnLinkState(i.getInterVpnLinkState(), firstDpnList, secondDpnList));
  78             });
  79
  80         return result;
  81     }
  82
  83     private boolean shouldConfigureLinkIntoDpn(InterVpnLinkState interVpnLinkState, int numberOfDpns) {
  84
  85         if (interVpnLinkState.getFirstEndpointState().getDpId() == null
  86                  || interVpnLinkState.getFirstEndpointState().getDpId().isEmpty()
  87             || interVpnLinkState.getSecondEndpointState().getDpId() == null
  88                     || interVpnLinkState.getSecondEndpointState().getDpId().isEmpty()) {
  89             return true;
  90         } else if (!interVpnLinkState.getFirstEndpointState().getDpId().contains(dpnId)
  91             && !interVpnLinkState.getSecondEndpointState().getDpId().contains(dpnId)
  92             && interVpnLinkState.getFirstEndpointState().getDpId().size() < numberOfDpns) {
  93             return true;
  94         } else {
  95             return false;
  96         }
  97     }
  98
  99     private ListenableFuture<Void>
 100         updateInterVpnLinkState(InterVpnLinkState interVpnLinkState, List<BigInteger> firstDpnList,
 101                                 List<BigInteger> secondDpnList) {
 102
 103         FirstEndpointState firstEndPointState =
 104             new FirstEndpointStateBuilder(interVpnLinkState.getFirstEndpointState()).setDpId(firstDpnList).build();
 105         SecondEndpointState secondEndPointState =
 106             new SecondEndpointStateBuilder(interVpnLinkState.getSecondEndpointState()).setDpId(secondDpnList).build();
 107         InterVpnLinkState newInterVpnLinkState =
 108             new InterVpnLinkStateBuilder(interVpnLinkState).setState(InterVpnLinkState.State.Active)
 109                     .setFirstEndpointState(firstEndPointState).setSecondEndpointState(secondEndPointState)
 110                     .build();
 111         return txRunner.callWithNewWriteOnlyTransactionAndSubmit(tx ->
 112             tx.merge(LogicalDatastoreType.CONFIGURATION,
 113                     InterVpnLinkUtil.getInterVpnLinkStateIid(interVpnLinkState.getInterVpnLinkName()),
 114                     newInterVpnLinkState, WriteTransaction.CREATE_MISSING_PARENTS));
 115     }
 116
 117     private void installLPortDispatcherTable(InterVpnLinkState interVpnLinkState, List<BigInteger> firstDpnList,
 118                                              List<BigInteger> secondDpnList) {
 119         String ivpnLinkName = interVpnLinkState.key().getInterVpnLinkName();
 120         Optional<InterVpnLinkDataComposite> optVpnLink = interVpnLinkCache.getInterVpnLinkByName(ivpnLinkName);
 121         if (!optVpnLink.isPresent()) {
 122             LOG.warn("installLPortDispatcherTable: Could not find interVpnLink {}", ivpnLinkName);
 123             return;
 124         }
 125
 126         InterVpnLinkDataComposite vpnLink = optVpnLink.get();
 127         Optional<Long> opt1stEndpointLportTag = vpnLink.getFirstEndpointLportTag();
 128         if (!opt1stEndpointLportTag.isPresent()) {
 129             LOG.warn("installLPortDispatcherTable: Could not find LPortTag for 1stEnpoint in InterVpnLink {}",
 130                      ivpnLinkName);
 131             return;
 132         }
 133
 134         Optional<Long> opt2ndEndpointLportTag = vpnLink.getSecondEndpointLportTag();
 135         if (!opt2ndEndpointLportTag.isPresent()) {
 136             LOG.warn("installLPortDispatcherTable: Could not find LPortTag for 2ndEnpoint in InterVpnLink {}",
 137                      ivpnLinkName);
 138             return;
 139         }
 140
 141         String firstEndpointVpnUuid = vpnLink.getFirstEndpointVpnUuid().get();
 142         String secondEndpointVpnUuid = vpnLink.getSecondEndpointVpnUuid().get();
 143         // Note that in the DPN of the firstEndpoint we install the lportTag of the secondEndpoint and viceversa
 144         String vpn1PrimaryRd = VpnUtil.getPrimaryRd(broker, firstEndpointVpnUuid);
 145         String vpn2PrimaryRd = VpnUtil.getPrimaryRd(broker, secondEndpointVpnUuid);
 146         if (!VpnUtil.isVpnPendingDelete(broker, vpn1PrimaryRd)
 147                 && !VpnUtil.isVpnPendingDelete(broker, vpn2PrimaryRd)) {
 148             InterVpnLinkUtil.installLPortDispatcherTableFlow(broker, mdsalManager, ivpnLinkName, firstDpnList,
 149                     secondEndpointVpnUuid, opt2ndEndpointLportTag.get());
 150             InterVpnLinkUtil.installLPortDispatcherTableFlow(broker, mdsalManager, ivpnLinkName, secondDpnList,
 151                     firstEndpointVpnUuid, opt1stEndpointLportTag.get());
 152             // Update the VPN -> DPNs Map.
 153             // Note: when a set of DPNs is calculated for Vpn1, these DPNs are added to the VpnToDpn map of Vpn2. Why?
 154             // because we do the handover from Vpn1 to Vpn2 in those DPNs, so in those DPNs we must know how to reach
 155             // to Vpn2 targets. If new Vpn2 targets are added later, the Fib will be maintained in these DPNs even if
 156             // Vpn2 is not physically present there.
 157             InterVpnLinkUtil.updateVpnFootprint(vpnFootprintService, secondEndpointVpnUuid, vpn1PrimaryRd,
 158                     firstDpnList);
 159             InterVpnLinkUtil.updateVpnFootprint(vpnFootprintService, firstEndpointVpnUuid, vpn2PrimaryRd,
 160                     secondDpnList);
 161         }
 162     }
 163 }