elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanExtnTepListener.java

   1 /*
   2  * Copyright (c) 2017 Ericsson India Global Services Pvt Ltd. 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.elan.internal;
   9
  10 import com.google.common.collect.Lists;
  11 import com.google.common.util.concurrent.SettableFuture;
  12 import javax.annotation.PreDestroy;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  16 import org.opendaylight.infrautils.utils.concurrent.Executors;
  17 import org.opendaylight.mdsal.binding.api.DataBroker;
  18 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  19 import org.opendaylight.netvirt.elan.cache.ElanInstanceCache;
  20 import org.opendaylight.netvirt.elan.l2gw.utils.ElanL2GatewayBcGroupUtils;
  21 import org.opendaylight.netvirt.elan.l2gw.utils.ElanRefUtil;
  22 import org.opendaylight.serviceutils.tools.listener.AbstractClusteredAsyncDataTreeChangeListener;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.elan.instance.ExternalTeps;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 @Singleton
  31 public class ElanExtnTepListener extends AbstractClusteredAsyncDataTreeChangeListener<ExternalTeps> {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(ElanExtnTepListener.class);
  34
  35     private final DataBroker broker;
  36     private final ElanL2GatewayBcGroupUtils elanL2GatewayBcGroupUtils;
  37     private final JobCoordinator jobCoordinator;
  38     private final ElanInstanceCache elanInstanceCache;
  39     private final ElanRefUtil elanRefUtil;
  40
  41     @Inject
  42     public ElanExtnTepListener(DataBroker dataBroker, ElanL2GatewayBcGroupUtils elanL2GatewayBcGroupUtils,
  43             JobCoordinator jobCoordinator, ElanInstanceCache elanInstanceCache, ElanRefUtil elanRefUtil) {
  44         super(dataBroker, LogicalDatastoreType.OPERATIONAL, InstanceIdentifier.create(ElanInstances.class)
  45                 .child(ElanInstance.class).child(ExternalTeps.class),
  46                 Executors.newListeningSingleThreadExecutor("ElanExtnTepListener", LOG));
  47         this.broker = dataBroker;
  48         this.elanL2GatewayBcGroupUtils = elanL2GatewayBcGroupUtils;
  49         this.jobCoordinator = jobCoordinator;
  50         this.elanInstanceCache = elanInstanceCache;
  51         this.elanRefUtil = elanRefUtil;
  52     }
  53
  54     public void init() {
  55         LOG.info("{} registered", getClass().getSimpleName());
  56     }
  57
  58     @Override
  59     public void add(InstanceIdentifier<ExternalTeps> instanceIdentifier, ExternalTeps tep) {
  60         LOG.trace("ExternalTeps add received {}", instanceIdentifier);
  61         updateElanRemoteBroadCastGroup(instanceIdentifier);
  62     }
  63
  64     @Override
  65     public void update(InstanceIdentifier<ExternalTeps> instanceIdentifier, ExternalTeps tep, ExternalTeps t1) {
  66     }
  67
  68     @Override
  69     public void remove(InstanceIdentifier<ExternalTeps> instanceIdentifier, ExternalTeps tep) {
  70         LOG.trace("ExternalTeps remove received {}", instanceIdentifier);
  71         updateElanRemoteBroadCastGroup(instanceIdentifier);
  72     }
  73
  74     @SuppressWarnings("checkstyle:IllegalCatch")
  75     private void updateElanRemoteBroadCastGroup(final InstanceIdentifier<ExternalTeps> iid) {
  76         String elanName = iid.firstKeyOf(ElanInstance.class).getElanInstanceName();
  77         ElanInstance elanInfo = elanInstanceCache.get(elanName).orElseGet(null);
  78         if (elanInfo == null) {
  79             return;
  80         }
  81
  82         jobCoordinator.enqueueJob(elanName, () -> {
  83             SettableFuture<Void> ft = SettableFuture.create();
  84             try {
  85                 //TODO make the following method return ft
  86                 elanL2GatewayBcGroupUtils.updateRemoteBroadcastGroupForAllElanDpns(elanInfo);
  87                 ft.set(null);
  88             } catch (Exception e) {
  89                 //since the above method does a sync write , if it fails there was no retry
  90                 //by setting the above mdsal exception in ft, and returning the ft makes sures that job is retried
  91                 ft.setException(e);
  92             }
  93             return Lists.newArrayList(ft);
  94         });
  95     }
  96
  97     @Override
  98     @PreDestroy
  99     public void close() {
 100         super.close();
 101         Executors.shutdownAndAwaitTermination(getExecutorService());
 102     }
 103 }