vpnservice/vpnmanager/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.CheckedFuture;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.math.BigInteger;
  14 import java.util.ArrayList;
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.concurrent.Callable;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  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 BigInteger dpnId;
  48     private final IMdsalApiManager mdsalManager;
  49     private final VpnFootprintService vpnFootprintService;
  50
  51     public InterVpnLinkNodeAddTask(final DataBroker broker, final IMdsalApiManager mdsalMgr,
  52         final VpnFootprintService vpnFootprintService, final BigInteger dpnId) {
  53         this.broker = broker;
  54         this.mdsalManager = mdsalMgr;
  55         this.vpnFootprintService = vpnFootprintService;
  56         this.dpnId = dpnId;
  57     }
  58
  59     @Override
  60     public List<ListenableFuture<Void>> call() throws Exception {
  61         List<ListenableFuture<Void>> result = new ArrayList<>();
  62         // check if there is any inter-vpn-link in with erroneous state
  63         int numberOfDpns = Integer.getInteger(NBR_OF_DPNS_PROPERTY_NAME, 1);
  64
  65         List<BigInteger> firstDpnList = Collections.singletonList(this.dpnId);
  66         List<BigInteger> secondDpnList = firstDpnList;
  67         InterVpnLinkCache.getAllInterVpnLinks().stream()
  68             .filter(i -> i.isComplete() && !i.isActive()
  69                         && shouldConfigureLinkIntoDpn(i.getInterVpnLinkState(), numberOfDpns))
  70             .forEach(i -> {
  71                 installLPortDispatcherTable(i.getInterVpnLinkState(), firstDpnList, secondDpnList);
  72                 result.add(updateInterVpnLinkState(i.getInterVpnLinkState(), firstDpnList, secondDpnList,
  73                                                    numberOfDpns));
  74             });
  75
  76         return result;
  77     }
  78
  79     private boolean shouldConfigureLinkIntoDpn(InterVpnLinkState interVpnLinkState, int numberOfDpns) {
  80
  81         if ((interVpnLinkState.getFirstEndpointState().getDpId() == null
  82                  || interVpnLinkState.getFirstEndpointState().getDpId().isEmpty())
  83             || (interVpnLinkState.getSecondEndpointState().getDpId() == null
  84                     || interVpnLinkState.getSecondEndpointState().getDpId().isEmpty())) {
  85             return true;
  86         } else if (!interVpnLinkState.getFirstEndpointState().getDpId().contains(dpnId)
  87             && !interVpnLinkState.getSecondEndpointState().getDpId().contains(dpnId)
  88             && (interVpnLinkState.getFirstEndpointState().getDpId().size() < numberOfDpns)) {
  89             return true;
  90         } else {
  91             return false;
  92         }
  93     }
  94
  95     private CheckedFuture<Void, TransactionCommitFailedException>
  96         updateInterVpnLinkState(InterVpnLinkState interVpnLinkState, List<BigInteger> firstDpnList,
  97                                 List<BigInteger> secondDpnList, int numberOfDpns) {
  98
  99         FirstEndpointState firstEndPointState =
 100             new FirstEndpointStateBuilder(interVpnLinkState.getFirstEndpointState()).setDpId(firstDpnList).build();
 101         SecondEndpointState secondEndPointState =
 102             new SecondEndpointStateBuilder(interVpnLinkState.getSecondEndpointState()).setDpId(secondDpnList).build();
 103         InterVpnLinkState newInterVpnLinkState =
 104             new InterVpnLinkStateBuilder(interVpnLinkState).setState(InterVpnLinkState.State.Active)
 105                     .setFirstEndpointState(firstEndPointState).setSecondEndpointState(secondEndPointState)
 106                     .build();
 107         WriteTransaction tx = broker.newWriteOnlyTransaction();
 108         tx.merge(LogicalDatastoreType.CONFIGURATION,
 109             InterVpnLinkUtil.getInterVpnLinkStateIid(interVpnLinkState.getInterVpnLinkName()), newInterVpnLinkState,
 110             true);
 111         return tx.submit();
 112     }
 113
 114     private void installLPortDispatcherTable(InterVpnLinkState interVpnLinkState, List<BigInteger> firstDpnList,
 115                                              List<BigInteger> secondDpnList) {
 116         String ivpnLinkName = interVpnLinkState.getKey().getInterVpnLinkName();
 117         Optional<InterVpnLinkDataComposite> optVpnLink = InterVpnLinkCache.getInterVpnLinkByName(ivpnLinkName);
 118         if (!optVpnLink.isPresent()) {
 119             LOG.warn("installLPortDispatcherTable: Could not find interVpnLink {}", ivpnLinkName);
 120             return;
 121         }
 122
 123         InterVpnLinkDataComposite vpnLink = optVpnLink.get();
 124         Optional<Long> opt1stEndpointLportTag = vpnLink.getFirstEndpointLportTag();
 125         if (!opt1stEndpointLportTag.isPresent()) {
 126             LOG.warn("installLPortDispatcherTable: Could not find LPortTag for 1stEnpoint in InterVpnLink {}",
 127                      ivpnLinkName);
 128             return;
 129         }
 130
 131         Optional<Long> opt2ndEndpointLportTag = vpnLink.getSecondEndpointLportTag();
 132         if (!opt2ndEndpointLportTag.isPresent()) {
 133             LOG.warn("installLPortDispatcherTable: Could not find LPortTag for 2ndEnpoint in InterVpnLink {}",
 134                      ivpnLinkName);
 135             return;
 136         }
 137
 138         String firstEndpointVpnUuid = vpnLink.getFirstEndpointVpnUuid().get();
 139         String secondEndpointVpnUuid = vpnLink.getSecondEndpointVpnUuid().get();
 140         // Note that in the DPN of the firstEndpoint we install the lportTag of the secondEndpoint and viceversa
 141         String vpn1PrimaryRd = VpnUtil.getPrimaryRd(broker, firstEndpointVpnUuid);
 142         String vpn2PrimaryRd = VpnUtil.getPrimaryRd(broker, secondEndpointVpnUuid);
 143         if (!VpnUtil.isVpnPendingDelete(broker, vpn1PrimaryRd)
 144                 && !VpnUtil.isVpnPendingDelete(broker, vpn2PrimaryRd)) {
 145             InterVpnLinkUtil.installLPortDispatcherTableFlow(broker, mdsalManager, ivpnLinkName, firstDpnList,
 146                     secondEndpointVpnUuid, opt2ndEndpointLportTag.get());
 147             InterVpnLinkUtil.installLPortDispatcherTableFlow(broker, mdsalManager, ivpnLinkName, secondDpnList,
 148                     firstEndpointVpnUuid, opt1stEndpointLportTag.get());
 149             // Update the VPN -> DPNs Map.
 150             // Note: when a set of DPNs is calculated for Vpn1, these DPNs are added to the VpnToDpn map of Vpn2. Why?
 151             // because we do the handover from Vpn1 to Vpn2 in those DPNs, so in those DPNs we must know how to reach
 152             // to Vpn2 targets. If new Vpn2 targets are added later, the Fib will be maintained in these DPNs even if
 153             // Vpn2 is not physically present there.
 154             InterVpnLinkUtil.updateVpnFootprint(vpnFootprintService, secondEndpointVpnUuid, vpn1PrimaryRd,
 155                     firstDpnList);
 156             InterVpnLinkUtil.updateVpnFootprint(vpnFootprintService, firstEndpointVpnUuid, vpn2PrimaryRd,
 157                     secondDpnList);
 158         }
 159     }
 160
 161 }