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

   1 /*
   2  * Copyright (c) 2017 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.internal;
  10
  11 import java.util.List;
  12 import javax.annotation.Nonnull;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  20 import org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker;
  21 import org.opendaylight.netvirt.natservice.api.CentralizedSwitchScheduler;
  22 import org.opendaylight.serviceutils.tools.mdsal.listener.AbstractClusteredSyncDataTreeChangeListener;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.config.rev170206.NatserviceConfig;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExtRouters;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.Routers;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ext.routers.routers.ExternalIps;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsalutil.rev170830.Config;
  28 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 @Singleton
  33 public class UpgradeStateListener extends AbstractClusteredSyncDataTreeChangeListener<Config> {
  34     private static final Logger LOG = LoggerFactory.getLogger(UpgradeStateListener.class);
  35
  36     private final DataBroker dataBroker;
  37     private final CentralizedSwitchScheduler centralizedSwitchScheduler;
  38     private final NatserviceConfig.NatMode natMode;
  39
  40     @Inject
  41     public UpgradeStateListener(final DataBroker dataBroker,
  42                                 final CentralizedSwitchScheduler centralizedSwitchScheduler,
  43                                 final NatserviceConfig config) {
  44         super(dataBroker, new DataTreeIdentifier<>(
  45                 LogicalDatastoreType.CONFIGURATION, InstanceIdentifier.create(Config.class)));
  46         this.dataBroker = dataBroker;
  47         this.centralizedSwitchScheduler = centralizedSwitchScheduler;
  48         if (config != null) {
  49             this.natMode = config.getNatMode();
  50         } else {
  51             this.natMode = NatserviceConfig.NatMode.Controller;
  52         }
  53         LOG.trace("UpgradeStateListener (nat) initialized");
  54     }
  55
  56     @Override
  57     public void add(@Nonnull Config newDataObject) {
  58     }
  59
  60     @Override
  61     public void remove(@Nonnull Config removedDataObject) {
  62     }
  63
  64     @Override
  65     public void update(@Nonnull Config original, Config updated) {
  66         if (natMode != NatserviceConfig.NatMode.Conntrack) {
  67             return;
  68         }
  69
  70         LOG.info("UpgradeStateListener update from {} to {}", original, updated);
  71         if (!(original.isUpgradeInProgress() && !updated.isUpgradeInProgress())) {
  72             return;
  73         }
  74
  75         SingleTransactionDataBroker reader = new SingleTransactionDataBroker(dataBroker);
  76         ExtRouters routers;
  77         try {
  78             routers = reader.syncRead(LogicalDatastoreType.CONFIGURATION,
  79                     InstanceIdentifier.create(ExtRouters.class));
  80         } catch (ReadFailedException e) {
  81             LOG.error("Error reading external routers", e);
  82             return;
  83         }
  84
  85         for (Routers router : routers.getRouters()) {
  86             List<ExternalIps> externalIps = router.getExternalIps();
  87             if (router.isEnableSnat() && externalIps != null && !externalIps.isEmpty()) {
  88                 centralizedSwitchScheduler.scheduleCentralizedSwitch(router);
  89             }
  90         }
  91     }
  92 }