natservice/impl/src/main/java/org/opendaylight/netvirt/natservice/internal/SnatExternalRoutersListener.java

   1 /*
   2  * Copyright (c) 2018 Red Hat, Inc. 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.natservice.internal;
   9
  10 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  11
  12 import java.util.Objects;
  13
  14 import javax.annotation.PostConstruct;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  20 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  21 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  22 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  23 import org.opendaylight.netvirt.natservice.api.CentralizedSwitchScheduler;
  24 import org.opendaylight.netvirt.natservice.api.SnatServiceManager;
  25 import org.opendaylight.serviceutils.upgrade.UpgradeState;
  26 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.idmanager.rev160406.IdManagerService;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig.NatMode;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExtRouters;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.Routers;
  32 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 @Singleton
  37 public class SnatExternalRoutersListener extends AsyncDataTreeChangeListenerBase<Routers, SnatExternalRoutersListener> {
  38     private static final Logger LOG = LoggerFactory.getLogger(SnatExternalRoutersListener.class);
  39
  40     private final DataBroker dataBroker;
  41     private final ManagedNewTransactionRunner txRunner;
  42     private final IdManagerService idManager;
  43     private final CentralizedSwitchScheduler  centralizedSwitchScheduler;
  44     private final NatMode natMode;
  45     private final UpgradeState upgradeState;
  46     private final SnatServiceManager natServiceManager;
  47
  48     @Inject
  49     public SnatExternalRoutersListener(final DataBroker dataBroker,
  50                                        final IdManagerService idManager,
  51                                        final CentralizedSwitchScheduler centralizedSwitchScheduler,
  52                                        final NatserviceConfig config,
  53                                        final SnatServiceManager natServiceManager,
  54                                        final UpgradeState upgradeState) {
  55         super(Routers.class, SnatExternalRoutersListener.class);
  56         this.dataBroker = dataBroker;
  57         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  58         this.idManager = idManager;
  59         this.centralizedSwitchScheduler = centralizedSwitchScheduler;
  60         this.upgradeState = upgradeState;
  61         this.natServiceManager = natServiceManager;
  62         if (config != null) {
  63             this.natMode = config.getNatMode();
  64         } else {
  65             this.natMode = NatMode.Conntrack;
  66         }
  67     }
  68
  69     @Override
  70     @PostConstruct
  71     public void init() {
  72         LOG.info("{} init", getClass().getSimpleName());
  73         // This class handles ExternalRouters for Conntrack SNAT mode.
  74         // For Controller SNAT mode, its handled in ExternalRoutersListeners.java
  75         if (natMode == NatMode.Conntrack) {
  76             registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  77             NatUtil.createGroupIdPool(idManager);
  78         }
  79     }
  80
  81     @Override
  82     protected InstanceIdentifier<Routers> getWildCardPath() {
  83         return InstanceIdentifier.create(ExtRouters.class).child(Routers.class);
  84     }
  85
  86     @Override
  87     @SuppressWarnings("checkstyle:IllegalCatch")
  88     protected void add(InstanceIdentifier<Routers> identifier, Routers routers) {
  89         String routerName = routers.getRouterName();
  90         if (upgradeState.isUpgradeInProgress()) {
  91             LOG.warn("add event for ext-router {}, but upgrade is in progress.", routerName);
  92             return;
  93         }
  94
  95         LOG.info("add : external router event for {}", routerName);
  96         long routerId = NatUtil.getVpnId(dataBroker, routerName);
  97         NatUtil.createRouterIdsConfigDS(dataBroker, routerId, routerName);
  98         Uuid bgpVpnUuid = NatUtil.getVpnForRouter(dataBroker, routerName);
  99         if (bgpVpnUuid != null) {
 100             // Router associated to BGPVPN, ignoring it.
 101             return;
 102         }
 103         // Allocate Primary NAPTSwitch for this router
 104         centralizedSwitchScheduler.scheduleCentralizedSwitch(routers);
 105     }
 106
 107     @Override
 108     protected void update(InstanceIdentifier<Routers> identifier, Routers original, Routers update) {
 109         String routerName = original.getRouterName();
 110         Long routerId = NatUtil.getVpnId(dataBroker, routerName);
 111         if (routerId == NatConstants.INVALID_ID) {
 112             LOG.error("update : external router event - Invalid routerId for routerName {}", routerName);
 113             return;
 114         }
 115         LOG.info("update :called for router {} with originalSNATStatus {} and updatedSNATStatus {}",
 116                 routerName, original.isEnableSnat(), update.isEnableSnat());
 117         if (!upgradeState.isUpgradeInProgress()) {
 118             centralizedSwitchScheduler.updateCentralizedSwitch(original, update);
 119         }
 120         if (!Objects.equals(original.getSubnetIds(), update.getSubnetIds())
 121                 || !Objects.equals(original.getExternalIps(), update.getExternalIps())) {
 122             ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 123                 confTx -> natServiceManager.notify(confTx, update, original, null, null,
 124                             SnatServiceManager.Action.SNAT_ROUTER_UPDATE)), LOG,
 125                     "error handling external router update");
 126         }
 127     }
 128
 129     @Override
 130     protected void remove(InstanceIdentifier<Routers> identifier, Routers router) {
 131         if (identifier == null || router == null) {
 132             LOG.error("remove : returning without processing since ext-router is null");
 133             return;
 134         }
 135
 136         LOG.info("remove : external router event for {}", router.getRouterName());
 137         centralizedSwitchScheduler.releaseCentralizedSwitch(router);
 138     }
 139
 140     @Override
 141     protected SnatExternalRoutersListener getDataTreeChangeListener() {
 142         return SnatExternalRoutersListener.this;
 143     }
 144 }