elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/internal/ElanInterfaceConfigListener.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 java.util.Collections;
  11 import javax.annotation.PostConstruct;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
  18 import org.opendaylight.infrautils.jobcoordinator.JobCoordinator;
  19 import org.opendaylight.netvirt.elan.utils.ElanConstants;
  20 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfL2vlan;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.interfaces.ElanInterface;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 @Singleton
  30 public class ElanInterfaceConfigListener
  31     extends AsyncDataTreeChangeListenerBase<Interface, ElanInterfaceConfigListener> {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(ElanInterfaceConfigListener.class);
  34
  35     private final DataBroker dataBroker;
  36     private final ElanInterfaceManager elanInterfaceManager;
  37     private final JobCoordinator jobCoordinator;
  38
  39     @Inject
  40     public ElanInterfaceConfigListener(DataBroker dataBroker, ElanInterfaceManager elanInterfaceManager,
  41             JobCoordinator jobCoordinator) {
  42         super(Interface.class, ElanInterfaceConfigListener.class);
  43         this.dataBroker = dataBroker;
  44         this.elanInterfaceManager = elanInterfaceManager;
  45         this.jobCoordinator = jobCoordinator;
  46     }
  47
  48     @Override
  49     @PostConstruct
  50     public void init() {
  51         LOG.info("ElanInterfaceConfigListener init");
  52         registerListener(LogicalDatastoreType.CONFIGURATION, dataBroker);
  53     }
  54
  55     @Override
  56     protected InstanceIdentifier<Interface> getWildCardPath() {
  57         return InstanceIdentifier.create(Interfaces.class).child(Interface.class);
  58     }
  59
  60     @Override
  61     protected void remove(InstanceIdentifier<Interface> key, Interface intrf) {
  62         // Sometimes elan service is not unbound on the interface when the user does nova delete followed
  63         // by neutron port delete since interface config is deleted a bit later. so adding logic to
  64         // unbind service for interface config removal.
  65         if (intrf == null || intrf.getAugmentation(IfL2vlan.class) == null) {
  66             LOG.debug("The interface {} is not a L2 interface. Ignoring it", intrf);
  67             return;
  68         }
  69
  70         String interfaceName = intrf.getName();
  71         ElanInterface elanInterface = ElanUtils.getElanInterfaceByElanInterfaceName(dataBroker, interfaceName);
  72         if (elanInterface == null) {
  73             LOG.debug("There is no ELAN service for interface {}. Ignoring it", interfaceName);
  74             return;
  75         }
  76         jobCoordinator.enqueueJob(ElanUtils.getElanInterfaceJobKey(interfaceName), () -> {
  77             WriteTransaction writeConfigTxn = dataBroker.newWriteOnlyTransaction();
  78             LOG.debug("unbinding elan service on interface {} for its config removal", interfaceName);
  79             elanInterfaceManager.unbindService(interfaceName, writeConfigTxn);
  80             return Collections.singletonList(writeConfigTxn.submit());
  81         }, ElanConstants.JOB_MAX_RETRIES);
  82     }
  83
  84     @Override
  85     protected void update(InstanceIdentifier<Interface> key, Interface dataObjectModificationBefore,
  86             Interface dataObjectModificationAfter) {
  87         // Not required to handle this event
  88     }
  89
  90     @Override
  91     protected void add(InstanceIdentifier<Interface> key, Interface dataObjectModification) {
  92         // Not required to handle this event
  93     }
  94
  95     @Override
  96     protected ElanInterfaceConfigListener getDataTreeChangeListener() {
  97         return this;
  98     }
  99
 100 }