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