vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/CentralizedSwitchChangeListener.java

   1 /*
   2  * Copyright (c) 2016 Hewlett Packard Enterprise, Co. 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
   9 package org.opendaylight.netvirt.vpnmanager;
  10
  11 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  12
  13 import java.util.List;
  14 import java.util.Objects;
  15 import java.util.concurrent.ExecutionException;
  16 import javax.annotation.PostConstruct;
  17 import javax.inject.Inject;
  18 import javax.inject.Singleton;
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  22 import org.opendaylight.genius.infra.Datastore.Configuration;
  23 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  24 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  25 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  26 import org.opendaylight.genius.mdsalutil.NwConstants;
  27 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  28 import org.opendaylight.netvirt.vpnmanager.api.IVpnManager;
  29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.NaptSwitches;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.Routers;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.routers.ExternalIps;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitch;
  34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  35 import org.opendaylight.yangtools.yang.common.Uint64;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 /**
  40  * CentralizedSwitchChangeListener detect changes in switch:router mapping and
  41  * update flows accordingly.<br>
  42  * The centralized switch a.k.a NAPT switch is currently defined using models
  43  * residing in natservice bundle. As the roles of centralized switch will grow
  44  * beyond NAT use cases, the associated models and logic need to be renamed
  45  * and moved to either vpnmanager or new bundle as part of Carbon model changes
  46  *
  47  */
  48 @Singleton
  49 public class CentralizedSwitchChangeListener
  50         extends AsyncDataTreeChangeListenerBase<RouterToNaptSwitch, CentralizedSwitchChangeListener> {
  51
  52     private static final Logger LOG = LoggerFactory.getLogger(CentralizedSwitchChangeListener.class);
  53
  54     private final DataBroker dataBroker;
  55     private final ManagedNewTransactionRunner txRunner;
  56     private final IVpnManager vpnManager;
  57     private final ExternalRouterDataUtil externalRouterDataUtil;
  58     private final VpnUtil vpnUtil;
  59
  60     @Inject
  61     public CentralizedSwitchChangeListener(final DataBroker dataBroker, final IVpnManager vpnManager,
  62             final ExternalRouterDataUtil externalRouterDataUtil, final VpnUtil vpnUtil) {
  63         super(RouterToNaptSwitch.class, CentralizedSwitchChangeListener.class);
  64         this.dataBroker = dataBroker;
  65         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  66         this.vpnManager = vpnManager;
  67         this.externalRouterDataUtil = externalRouterDataUtil;
  68         this.vpnUtil = vpnUtil;
  69     }
  70
  71     @Override
  72     @PostConstruct
  73     public void init() {
  74         LOG.info("{} init", getClass().getSimpleName());
  75         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  76     }
  77
  78     @Override
  79     protected InstanceIdentifier<RouterToNaptSwitch> getWildCardPath() {
  80         return InstanceIdentifier.create(NaptSwitches.class).child(RouterToNaptSwitch.class);
  81     }
  82
  83     @Override
  84     protected void remove(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch routerToNaptSwitch) {
  85         LOG.debug("Removing {}", routerToNaptSwitch);
  86         ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx ->
  87                                             setupRouterGwFlows(routerToNaptSwitch, tx, NwConstants.DEL_FLOW)), LOG,
  88                                                 "Error processing switch removal for {}", routerToNaptSwitch);
  89     }
  90
  91     @Override
  92     protected void update(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch origRouterToNaptSwitch,
  93             RouterToNaptSwitch updatedRouterToNaptSwitch) {
  94         LOG.debug("Updating old {} new {}", origRouterToNaptSwitch, updatedRouterToNaptSwitch);
  95         if (!Objects.equals(updatedRouterToNaptSwitch.getPrimarySwitchId(),
  96                 origRouterToNaptSwitch.getPrimarySwitchId())) {
  97             ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx -> {
  98                 setupRouterGwFlows(origRouterToNaptSwitch, tx, NwConstants.DEL_FLOW);
  99                 setupRouterGwFlows(updatedRouterToNaptSwitch, tx, NwConstants.ADD_FLOW);
 100             }), LOG, "Error updating switch {} to {}", origRouterToNaptSwitch, updatedRouterToNaptSwitch);
 101         }
 102     }
 103
 104     @Override
 105     protected void add(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch routerToNaptSwitch) {
 106         LOG.debug("Adding {}", routerToNaptSwitch);
 107         ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx ->
 108                         setupRouterGwFlows(routerToNaptSwitch, tx, NwConstants.ADD_FLOW)), LOG,
 109                 "Error processing switch addition for {}", routerToNaptSwitch);
 110     }
 111
 112     @Override
 113     protected CentralizedSwitchChangeListener getDataTreeChangeListener() {
 114         return this;
 115     }
 116
 117     private void setupRouterGwFlows(RouterToNaptSwitch routerToNaptSwitch,
 118             TypedReadWriteTransaction<Configuration> confTx, int addOrRemove)
 119                                     throws ExecutionException, InterruptedException {
 120         Routers router = null;
 121         if (addOrRemove == NwConstants.ADD_FLOW) {
 122             router = vpnUtil.getExternalRouter(routerToNaptSwitch.getRouterName());
 123         }
 124         else {
 125             router = externalRouterDataUtil.getRouter(routerToNaptSwitch.getRouterName());
 126         }
 127         if (router == null) {
 128             LOG.warn("No router data found for router id {}", routerToNaptSwitch.getRouterName());
 129             return;
 130         }
 131
 132         Uint64 primarySwitchId = routerToNaptSwitch.getPrimarySwitchId();
 133         Uuid extNetworkId = router.getNetworkId();
 134         String extGwMacAddress = router.getExtGwMacAddress();
 135         String routerName = router.getRouterName();
 136         List<ExternalIps> externalIps = router.getExternalIps();
 137         if (externalIps.isEmpty()) {
 138             LOG.error("CentralizedSwitchChangeListener: setupRouterGwFlows no externalIP present");
 139             return;
 140         }
 141
 142         for (ExternalIps extIp : router.nonnullExternalIps()) {
 143             Uuid subnetVpnName = extIp.getSubnetId();
 144             if (addOrRemove == NwConstants.ADD_FLOW) {
 145                 vpnManager.addRouterGwMacFlow(routerName, extGwMacAddress, primarySwitchId, extNetworkId,
 146                         subnetVpnName.getValue(), confTx);
 147                 externalRouterDataUtil.addtoRouterMap(router);
 148             } else {
 149                 vpnManager.removeRouterGwMacFlow(routerName, extGwMacAddress, primarySwitchId, extNetworkId,
 150                         subnetVpnName.getValue(), confTx);
 151                 externalRouterDataUtil.removeFromRouterMap(router);
 152             }
 153         }
 154
 155         if (addOrRemove == NwConstants.ADD_FLOW) {
 156             vpnManager.addArpResponderFlowsToExternalNetworkIps(routerName,
 157                     VpnUtil.getIpsListFromExternalIps(router.getExternalIps()),
 158                     extGwMacAddress, primarySwitchId, extNetworkId);
 159         } else {
 160             vpnManager.removeArpResponderFlowsToExternalNetworkIps(routerName,
 161                     VpnUtil.getIpsListFromExternalIps(router.getExternalIps()),
 162                     extGwMacAddress, primarySwitchId, extNetworkId);
 163         }
 164     }
 165 }