interfacemanager/interfacemanager-impl/src/main/java/org/opendaylight/genius/interfacemanager/listeners/CacheInterfaceConfigListener.java

   1 /*
   2  * Copyright (c) 2016, 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
   9 package org.opendaylight.genius.interfacemanager.listeners;
  10
  11 import java.util.Collection;
  12 import javax.annotation.PreDestroy;
  13 import javax.inject.Inject;
  14 import javax.inject.Singleton;
  15 import org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  18 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  19 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.genius.interfacemanager.commons.InterfaceManagerCommonUtils;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  24 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * This class listens for interface creation/removal/update in Configuration DS.
  31  * This is used to handle interfaces for base of-ports.
  32  */
  33 @Singleton
  34 public class CacheInterfaceConfigListener implements ClusteredDataTreeChangeListener<Interface> {
  35     private static final Logger LOG = LoggerFactory.getLogger(CacheInterfaceConfigListener.class);
  36     private final ListenerRegistration<CacheInterfaceConfigListener> registration;
  37     private final DataTreeIdentifier<Interface> treeId = new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION,
  38             getWildcardPath());
  39
  40     @Inject
  41     public CacheInterfaceConfigListener(final DataBroker dataBroker) {
  42         LOG.trace("Registering on path: {}", treeId);
  43         registration = dataBroker.registerDataTreeChangeListener(treeId, CacheInterfaceConfigListener.this);
  44     }
  45
  46     @PreDestroy
  47     public void close() {
  48         if (registration != null) {
  49             registration.close();
  50         }
  51     }
  52
  53     protected InstanceIdentifier<Interface> getWildcardPath() {
  54         return InstanceIdentifier.create(Interfaces.class).child(Interface.class);
  55     }
  56
  57     @Override
  58     public void onDataTreeChanged(Collection<DataTreeModification<Interface>> changes) {
  59         for (DataTreeModification<Interface> change : changes) {
  60             final InstanceIdentifier<Interface> key = change.getRootPath().getRootIdentifier();
  61             final DataObjectModification<Interface> mod = change.getRootNode();
  62             switch (mod.getModificationType()) {
  63                 case DELETE:
  64                     InterfaceManagerCommonUtils.removeFromInterfaceCache(mod.getDataBefore());
  65                     break;
  66                 case SUBTREE_MODIFIED:
  67                 case WRITE:
  68                     InterfaceManagerCommonUtils.addInterfaceToCache(mod.getDataAfter());
  69                     break;
  70                 default:
  71                     throw new IllegalArgumentException("Unhandled modification type " + mod.getModificationType());
  72             }
  73         }
  74     }
  75 }