opendaylight/md-sal/forwardingrules-manager/src/main/java/org/opendaylight/controller/frm/group/GroupChangeListener.java

   1 /**
   2  * Copyright (c) 2014 Cisco Systems, 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 package org.opendaylight.controller.frm.group;
   9
  10 import org.opendaylight.controller.frm.AbstractChangeListener;
  11 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  12 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Uri;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.AddGroupInputBuilder;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.RemoveGroupInputBuilder;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.UpdateGroupInputBuilder;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.group.update.OriginalGroupBuilder;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.service.rev130918.group.update.UpdatedGroupBuilder;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupRef;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  22 import org.opendaylight.yangtools.yang.binding.DataObject;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import com.google.common.base.Preconditions;
  28
  29 /**
  30  * Group Change Listener
  31  *  add, update and remove {@link Group} processing from {@link org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent}.
  32  *
  33  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  34  *
  35  */
  36 public class GroupChangeListener extends AbstractChangeListener {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(GroupChangeListener.class);
  39
  40     private final GroupProvider provider;
  41
  42     public GroupChangeListener(final GroupProvider provider) {
  43         this.provider = Preconditions.checkNotNull(provider, "GroupProvider can not be null !");
  44     }
  45
  46     @Override
  47     protected void remove(final InstanceIdentifier<? extends DataObject> identifier,
  48                           final DataObject removeDataObj) {
  49
  50         final Group group = ((Group) removeDataObj);
  51         final InstanceIdentifier<Node> nodeInstanceId = identifier.<Node> firstIdentifierOf(Node.class);
  52         final RemoveGroupInputBuilder builder = new RemoveGroupInputBuilder(group);
  53
  54         builder.setNode(new NodeRef(nodeInstanceId));
  55         builder.setGroupRef(new GroupRef(identifier));
  56
  57         Uri uri = new Uri(this.getTransactionId());
  58         builder.setTransactionUri(uri);
  59         this.provider.getSalGroupService().removeGroup(builder.build());
  60         LOG.debug("Transaction {} - Remove Group has removed group: {}", new Object[]{uri, removeDataObj});
  61     }
  62
  63     @Override
  64     protected void update(final InstanceIdentifier<? extends DataObject> identifier,
  65                           final DataObject original, final DataObject update) {
  66
  67         final Group originalGroup = ((Group) original);
  68         final Group updatedGroup = ((Group) update);
  69         final InstanceIdentifier<Node> nodeInstanceId = identifier.<Node> firstIdentifierOf(Node.class);
  70         final UpdateGroupInputBuilder builder = new UpdateGroupInputBuilder();
  71
  72         builder.setNode(new NodeRef(nodeInstanceId));
  73         builder.setGroupRef(new GroupRef(identifier));
  74
  75         Uri uri = new Uri(this.getTransactionId());
  76         builder.setTransactionUri(uri);
  77
  78         builder.setUpdatedGroup((new UpdatedGroupBuilder(updatedGroup)).build());
  79         builder.setOriginalGroup((new OriginalGroupBuilder(originalGroup)).build());
  80
  81         this.provider.getSalGroupService().updateGroup(builder.build());
  82         LOG.debug("Transaction {} - Update Group has updated group {} with group {}", new Object[]{uri, original, update});
  83     }
  84
  85     @Override
  86     protected void add(final InstanceIdentifier<? extends DataObject> identifier,
  87                        final DataObject addDataObj) {
  88
  89         final Group group = ((Group) addDataObj);
  90         final InstanceIdentifier<Node> nodeInstanceId = identifier.<Node> firstIdentifierOf(Node.class);
  91         final AddGroupInputBuilder builder = new AddGroupInputBuilder(group);
  92
  93         builder.setNode(new NodeRef(nodeInstanceId));
  94         builder.setGroupRef(new GroupRef(identifier));
  95
  96         Uri uri = new Uri(this.getTransactionId());
  97         builder.setTransactionUri(uri);
  98         this.provider.getSalGroupService().addGroup(builder.build());
  99         LOG.debug("Transaction {} - Add Group has added group: {}", new Object[]{uri, addDataObj});
 100     }
 101
 102     @Override
 103     protected boolean preconditionForChange(final InstanceIdentifier<? extends DataObject> identifier,
 104             final DataObject dataObj, final DataObject update) {
 105
 106         final ReadOnlyTransaction trans = this.provider.getDataService().newReadOnlyTransaction();
 107         return update != null
 108                 ? (dataObj instanceof Group && update instanceof Group && isNodeAvailable(identifier, trans))
 109                 : (dataObj instanceof Group && isNodeAvailable(identifier, trans));
 110     }
 111 }