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.math.BigInteger;
  14
  15 import java.time.Duration;
  16 import java.util.concurrent.ExecutionException;
  17 import javax.annotation.PostConstruct;
  18 import javax.inject.Inject;
  19 import javax.inject.Singleton;
  20 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  23 import org.opendaylight.genius.datastoreutils.listeners.DataTreeEventCallbackRegistrar;
  24 import org.opendaylight.genius.infra.Datastore;
  25 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  26 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  27 import org.opendaylight.genius.infra.TypedReadWriteTransaction;
  28 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  29 import org.opendaylight.netvirt.natservice.api.SnatServiceManager;
  30 import org.opendaylight.netvirt.natservice.internal.NatConstants;
  31 import org.opendaylight.netvirt.natservice.internal.NatUtil;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.NaptSwitches;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.Routers;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.napt.switches.RouterToNaptSwitch;
  35 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  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.
  42  */
  43 @Singleton
  44 public class SnatCentralizedSwitchChangeListener
  45         extends AsyncDataTreeChangeListenerBase<RouterToNaptSwitch, SnatCentralizedSwitchChangeListener> {
  46
  47     private static final Logger LOG = LoggerFactory.getLogger(SnatCentralizedSwitchChangeListener.class);
  48     private final DataBroker dataBroker;
  49     private final ManagedNewTransactionRunner txRunner;
  50     private final SnatServiceManager snatServiceManger;
  51     private final NatDataUtil natDataUtil;
  52     private final DataTreeEventCallbackRegistrar eventCallbacks;
  53
  54     @Inject
  55     public SnatCentralizedSwitchChangeListener(final DataBroker dataBroker,
  56             final SnatServiceManager snatServiceManger, NatDataUtil natDataUtil,
  57             final DataTreeEventCallbackRegistrar dataTreeEventCallbackRegistrar) {
  58         super(RouterToNaptSwitch.class, SnatCentralizedSwitchChangeListener.class);
  59         this.dataBroker = dataBroker;
  60         this.txRunner = new ManagedNewTransactionRunnerImpl(dataBroker);
  61         this.snatServiceManger = snatServiceManger;
  62         this.natDataUtil = natDataUtil;
  63         this.eventCallbacks = dataTreeEventCallbackRegistrar;
  64     }
  65
  66     @Override
  67     @PostConstruct
  68     public void init() {
  69         LOG.info("{} init", getClass().getSimpleName());
  70         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  71     }
  72
  73     @Override
  74     protected InstanceIdentifier<RouterToNaptSwitch> getWildCardPath() {
  75         return InstanceIdentifier.create(NaptSwitches.class).child(RouterToNaptSwitch.class);
  76     }
  77
  78     @Override
  79     protected void remove(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch routerToNaptSwitch) {
  80         LOG.debug("Deleting {}", routerToNaptSwitch);
  81         BigInteger primarySwitchId = routerToNaptSwitch.getPrimarySwitchId();
  82         Routers router = natDataUtil.getRouter(routerToNaptSwitch.getRouterName());
  83         if (router != null) {
  84             ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
  85                 confTx -> snatServiceManger.notify(confTx, router, primarySwitchId, null,
  86                     SnatServiceManager.Action.SNAT_ALL_SWITCH_DISBL)), LOG,
  87                 "error handling SNAT centralized switch removal");
  88             natDataUtil.removeFromRouterMap(router);
  89         }
  90     }
  91
  92     @Override
  93     protected void update(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch origRouterToNaptSwitch,
  94             RouterToNaptSwitch updatedRouterToNaptSwitch) {
  95         LOG.debug("Updating old {} new {}", origRouterToNaptSwitch, updatedRouterToNaptSwitch);
  96         BigInteger origPrimarySwitchId = origRouterToNaptSwitch.getPrimarySwitchId();
  97         ListenableFutures.addErrorLogging(txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, confTx -> {
  98             Routers origRouter = NatUtil.getRoutersFromConfigDS(confTx, origRouterToNaptSwitch.getRouterName());
  99             if (origRouter != null) {
 100                 snatServiceManger.notify(confTx, origRouter, origPrimarySwitchId, null,
 101                     SnatServiceManager.Action.SNAT_ALL_SWITCH_DISBL);
 102                 natDataUtil.removeFromRouterMap(origRouter);
 103             }
 104             BigInteger updatedPrimarySwitchId = updatedRouterToNaptSwitch.getPrimarySwitchId();
 105             Routers updatedRouter = NatUtil.getRoutersFromConfigDS(confTx, updatedRouterToNaptSwitch.getRouterName());
 106             if (updatedRouter != null) {
 107                 natDataUtil.updateRouterMap(updatedRouter);
 108                 snatServiceManger.notify(confTx, updatedRouter, updatedPrimarySwitchId, null,
 109                     SnatServiceManager.Action.SNAT_ALL_SWITCH_ENBL);
 110             }
 111         }), LOG, "Error handling SNAT centralized switch update");
 112     }
 113
 114     @Override
 115     protected void add(InstanceIdentifier<RouterToNaptSwitch> key, RouterToNaptSwitch routerToNaptSwitch) {
 116         LOG.debug("Adding {}", routerToNaptSwitch);
 117         BigInteger primarySwitchId = routerToNaptSwitch.getPrimarySwitchId();
 118         String routerName = routerToNaptSwitch.getRouterName();
 119         Routers router = NatUtil.getRoutersFromConfigDS(dataBroker, routerName);
 120         long vpnId = NatUtil.getVpnId(dataBroker, routerName);
 121         if (vpnId == NatConstants.INVALID_ID) {
 122             LOG.warn("VpnId not unavailable for router {} yet", routerName);
 123             eventCallbacks.onAddOrUpdate(LogicalDatastoreType.CONFIGURATION,
 124                 NatUtil.getVpnInstanceToVpnIdIdentifier(routerName), (unused, newVpnId) -> {
 125                     ListenableFutures.addErrorLogging(
 126                         txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 127                             innerConfTx -> handleAdd(innerConfTx, routerName, router, primarySwitchId)), LOG,
 128                         "Error handling router addition");
 129                     return DataTreeEventCallbackRegistrar.NextAction.UNREGISTER;
 130                 }, Duration.ofSeconds(5), iid -> LOG.error("VpnId not found for router {}", routerName));
 131             return;
 132         }
 133         ListenableFutures.addErrorLogging(
 134             txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 135                 confTx -> handleAdd(confTx, routerName, router, primarySwitchId)), LOG,
 136             "Error handling router addition");
 137     }
 138
 139     private void handleAdd(TypedReadWriteTransaction<Datastore.Configuration> confTx,
 140             String routerName, Routers router, BigInteger primarySwitchId)
 141             throws ExecutionException, InterruptedException {
 142         if (router != null) {
 143             natDataUtil.addtoRouterMap(router);
 144             snatServiceManger.notify(confTx, router, primarySwitchId, null,
 145                 SnatServiceManager.Action.SNAT_ALL_SWITCH_ENBL);
 146         } else {
 147             LOG.error("Router {} not found for primarySwitch {}", routerName, primarySwitchId);
 148         }
 149     }
 150
 151     @Override
 152     protected SnatCentralizedSwitchChangeListener getDataTreeChangeListener() {
 153         return this;
 154     }
 155 }