natservice/impl/src/main/java/org/opendaylight/netvirt/natservice/ha/SnatCentralizedSwitchChangeListener.java

   1 /*
   2  * Copyright (c) 2017, 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
   9 package org.opendaylight.netvirt.natservice.ha;
  10
  11 import static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  12
  13 import java.time.Duration;
  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.datastoreutils.listeners.DataTreeEventCallbackRegistrar;
  23 import org.opendaylight.genius.infra.Datastore;
  24 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  25 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  26 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  27 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  28 import org.opendaylight.netvirt.natservice.api.SnatServiceManager;
  29 import org.opendaylight.netvirt.natservice.internal.NatConstants;
  30 import org.opendaylight.netvirt.natservice.internal.NatUtil;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig.NatMode;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.NaptSwitches;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.Routers;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitch;
  36 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  37 import org.opendaylight.yangtools.yang.common.Uint32;
  38 import org.opendaylight.yangtools.yang.common.Uint64;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 /**
  43  * CentralizedSwitchChangeListener detect changes in switch:router mapping and
  44  * update flows accordingly.
  45  */
  46 @Singleton
  47 public class SnatCentralizedSwitchChangeListener
  48         extends AsyncDataTreeChangeListenerBase<RouterToNaptSwitch, SnatCentralizedSwitchChangeListener> {
  49
  50     private static final Logger LOG = LoggerFactory.getLogger(SnatCentralizedSwitchChangeListener.class);
  51     private final DataBroker dataBroker;
  52     private final ManagedNewTransactionRunner txRunner;
  53     private final SnatServiceManager snatServiceManger;
  54     private final NatDataUtil natDataUtil;
  55     private final DataTreeEventCallbackRegistrar eventCallbacks;
  56     private final NatMode natMode;
  57
  58     @Inject
  59     public SnatCentralizedSwitchChangeListener(final DataBroker dataBroker,
  60             final SnatServiceManager snatServiceManger, NatDataUtil natDataUtil, final NatserviceConfig config,
  61             final DataTreeEventCallbackRegistrar dataTreeEventCallbackRegistrar) {
  62         super(RouterToNaptSwitch.class, SnatCentralizedSwitchChangeListener.class);
  63         this.dataBroker = dataBroker;
  64         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  65         this.snatServiceManger = snatServiceManger;
  66         this.natDataUtil = natDataUtil;
  67         this.eventCallbacks = dataTreeEventCallbackRegistrar;
  68         if (config != null) {
  69             this.natMode = config.getNatMode();
  70         } else {
  71             LOG.info("NAT mode configured default as Controller as config is missing");
  72             this.natMode = NatMode.Controller;
  73         }
  74     }
  75
  76     @Override
  77     @PostConstruct
  78     public void init() {
  79         LOG.info("{} init", getClass().getSimpleName());
  80         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  81     }
  82
  83     @Override
  84     protected InstanceIdentifier<RouterToNaptSwitch> getWildCardPath() {
  85         return InstanceIdentifier.create(NaptSwitches.class).child(RouterToNaptSwitch.class);
  86     }
  87
  88     @Override
  89     protected void remove(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch routerToNaptSwitch) {
  90         LOG.debug("Deleting {}", routerToNaptSwitch);
  91         if (natMode == NatMode.Controller) {
  92             LOG.info("Do Not Processing this remove() event for (routerName:designatedDpn) {}:{}"
  93                     + "configured in Controller Mode",
  94                     routerToNaptSwitch.getRouterName(), routerToNaptSwitch.getPrimarySwitchId());
  95             return;
  96         }
  97         Uint64 primarySwitchId = routerToNaptSwitch.getPrimarySwitchId();
  98         Routers router = natDataUtil.getRouter(routerToNaptSwitch.getRouterName());
  99         if (router != null) {
 100             ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 101                 confTx -> snatServiceManger.notify(confTx, router, null, primarySwitchId, null,
 102                     SnatServiceManager.Action.SNAT_ALL_SWITCH_DISBL)), LOG,
 103                 "error handling SNAT centralized switch removal");
 104             natDataUtil.removeFromRouterMap(router);
 105         }
 106     }
 107
 108     @Override
 109     protected void update(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch origRouterToNaptSwitch,
 110             RouterToNaptSwitch updatedRouterToNaptSwitch) {
 111         LOG.debug("Updating old {} new {}", origRouterToNaptSwitch, updatedRouterToNaptSwitch);
 112         if (natMode == NatMode.Controller) {
 113             LOG.info("Do Not Processing this update() event for (routerName:designatedDpn) {}:{}"
 114                             + "configured in Controller Mode",
 115                     updatedRouterToNaptSwitch.getRouterName(), updatedRouterToNaptSwitch.getPrimarySwitchId());
 116             return;
 117         }
 118         Uint64 origPrimarySwitchId = origRouterToNaptSwitch.getPrimarySwitchId();
 119         Uint64 updatedPrimarySwitchId = updatedRouterToNaptSwitch.getPrimarySwitchId();
 120         ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, confTx -> {
 121             Routers origRouter = NatUtil.getRoutersFromConfigDS(confTx, origRouterToNaptSwitch.getRouterName());
 122             Routers updatedRouter = NatUtil.getRoutersFromConfigDS(confTx, updatedRouterToNaptSwitch.getRouterName());
 123             if (!Objects.equals(origPrimarySwitchId, updatedPrimarySwitchId)) {
 124                 if (origRouter != null) {
 125                     snatServiceManger.notify(confTx, origRouter, null, origPrimarySwitchId, null,
 126                             SnatServiceManager.Action.CNT_ROUTER_ALL_SWITCH_DISBL);
 127                     if (origRouterToNaptSwitch.isEnableSnat()) {
 128                         snatServiceManger.notify(confTx, origRouter, null, origPrimarySwitchId, null,
 129                                 SnatServiceManager.Action.SNAT_ALL_SWITCH_DISBL);
 130                     }
 131                     natDataUtil.removeFromRouterMap(origRouter);
 132                 }
 133                 if (updatedRouter != null) {
 134                     natDataUtil.updateRouterMap(updatedRouter);
 135                     snatServiceManger.notify(confTx, updatedRouter, null, updatedPrimarySwitchId, null,
 136                             SnatServiceManager.Action.CNT_ROUTER_ALL_SWITCH_ENBL);
 137                     if (updatedRouterToNaptSwitch.isEnableSnat()) {
 138                         snatServiceManger.notify(confTx, updatedRouter, null, updatedPrimarySwitchId, null,
 139                                 SnatServiceManager.Action.SNAT_ALL_SWITCH_ENBL);
 140                     }
 141                 }
 142             } else {
 143                 boolean origIsSnatEnabled = false;
 144                 boolean updatedIsSnatEnabled = false;
 145                 if (origRouterToNaptSwitch.isEnableSnat() != null) {
 146                     origIsSnatEnabled = origRouterToNaptSwitch.isEnableSnat();
 147                 }
 148                 if (updatedRouterToNaptSwitch.isEnableSnat() != null) {
 149                     updatedIsSnatEnabled = updatedRouterToNaptSwitch.isEnableSnat();
 150                 }
 151                 if (origIsSnatEnabled != updatedIsSnatEnabled) {
 152                     if (updatedRouterToNaptSwitch.isEnableSnat()) {
 153                         snatServiceManger.notify(confTx, updatedRouter, null, updatedPrimarySwitchId, null,
 154                                 SnatServiceManager.Action.SNAT_ALL_SWITCH_ENBL);
 155                     } else {
 156                         snatServiceManger.notify(confTx, origRouter, null, origPrimarySwitchId, null,
 157                                 SnatServiceManager.Action.SNAT_ALL_SWITCH_DISBL);
 158                     }
 159                 }
 160             }
 161         }), LOG, "Error handling SNAT centralized switch update");
 162     }
 163
 164     @Override
 165     protected void add(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch routerToNaptSwitch) {
 166         LOG.debug("Adding {}", routerToNaptSwitch);
 167         if (natMode == NatMode.Controller) {
 168             LOG.info("Do Not Processing this add() event for (routerName:designatedDpn) {}:{}"
 169                             + "configured in Controller Mode",
 170                     routerToNaptSwitch.getRouterName(), routerToNaptSwitch.getPrimarySwitchId());
 171             return;
 172         }
 173         Uint64 primarySwitchId = routerToNaptSwitch.getPrimarySwitchId();
 174         String routerName = routerToNaptSwitch.getRouterName();
 175         Routers router = NatUtil.getRoutersFromConfigDS(dataBroker, routerName);
 176         final boolean isEnableSnat;
 177         if (routerToNaptSwitch.isEnableSnat() != null) {
 178             isEnableSnat = routerToNaptSwitch.isEnableSnat();
 179         } else {
 180             isEnableSnat = false;
 181         }
 182         Uint32 vpnId = NatUtil.getVpnId(dataBroker, routerName);
 183         if (vpnId == NatConstants.INVALID_ID) {
 184             LOG.warn("VpnId not unavailable for router {} yet", routerName);
 185             eventCallbacks.onAddOrUpdate(LogicalDatastoreType.CONFIGURATION,
 186                 NatUtil.getVpnInstanceToVpnIdIdentifier(routerName), (unused, newVpnId) -> {
 187                     ListenableFutures.addErrorLogging(
 188                         txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 189                             innerConfTx -> handleAdd(innerConfTx, routerName, router, primarySwitchId,
 190                                     isEnableSnat)), LOG,
 191                         "Error handling router addition");
 192                     return DataTreeEventCallbackRegistrar.NextAction.UNREGISTER;
 193                 }, Duration.ofSeconds(5), iid -> LOG.error("VpnId not found for router {}", routerName));
 194             return;
 195         }
 196         ListenableFutures.addErrorLogging(
 197             txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 198                 confTx -> handleAdd(confTx, routerName, router, primarySwitchId,
 199                         isEnableSnat)), LOG, "Error handling router addition");
 200     }
 201
 202     private void handleAdd(TypedReadWriteTransaction<Datastore.Configuration> confTx,
 203             String routerName, Routers router, Uint64 primarySwitchId, boolean isSnatEnabled)
 204             throws ExecutionException, InterruptedException {
 205         if (router != null) {
 206             natDataUtil.addtoRouterMap(router);
 207             snatServiceManger.notify(confTx, router, null, primarySwitchId, null,
 208                     SnatServiceManager.Action.CNT_ROUTER_ALL_SWITCH_ENBL);
 209             if (isSnatEnabled) {
 210                 snatServiceManger.notify(confTx, router, null, primarySwitchId, null,
 211                         SnatServiceManager.Action.SNAT_ALL_SWITCH_ENBL);
 212             }
 213         } else {
 214             LOG.error("Router {} not found for primarySwitch {}", routerName, primarySwitchId);
 215         }
 216     }
 217
 218     @Override
 219     protected SnatCentralizedSwitchChangeListener getDataTreeChangeListener() {
 220         return this;
 221     }
 222 }