netconf/mdsal-netconf-notification/src/main/java/org/opendaylight/controller/config/yang/netconf/mdsal/notification/BaseCapabilityChangeNotificationPublisher.java

   1 /*
   2  * Copyright (c) 2015 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
   9 package org.opendaylight.controller.config.yang.netconf.mdsal.notification;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.Lists;
  13 import com.google.common.collect.Sets;
  14 import java.util.Collections;
  15 import java.util.Set;
  16 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  17 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  18 import org.opendaylight.netconf.notifications.BaseNotificationPublisherRegistration;
  19 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.Uri;
  20 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.NetconfState;
  21 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.Capabilities;
  22 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfCapabilityChange;
  23 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.NetconfCapabilityChangeBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.changed.by.parms.ChangedByBuilder;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.changed.by.parms.changed.by.server.or.user.ServerBuilder;
  26 import org.opendaylight.yangtools.yang.binding.DataObject;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28
  29
  30 /**
  31  * Listens on capabilities changes in data store and publishes them to base
  32  * netconf notification stream listener.
  33  */
  34 final class BaseCapabilityChangeNotificationPublisher implements DataChangeListener, AutoCloseable {
  35
  36     private final BaseNotificationPublisherRegistration baseNotificationPublisherRegistration;
  37
  38     public BaseCapabilityChangeNotificationPublisher(BaseNotificationPublisherRegistration baseNotificationPublisherRegistration) {
  39         this.baseNotificationPublisherRegistration = baseNotificationPublisherRegistration;
  40     }
  41
  42     @Override
  43     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  44         baseNotificationPublisherRegistration.onCapabilityChanged(computeCapabilitycChange(change));
  45     }
  46
  47     private NetconfCapabilityChange computeCapabilitycChange(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  48         final NetconfCapabilityChangeBuilder netconfCapabilityChangeBuilder = new NetconfCapabilityChangeBuilder();
  49         netconfCapabilityChangeBuilder.setChangedBy(new ChangedByBuilder().setServerOrUser(new ServerBuilder().setServer(true).build()).build());
  50
  51         if (!change.getCreatedData().isEmpty()) {
  52             final InstanceIdentifier capabilitiesIdentifier = InstanceIdentifier.create(NetconfState.class).child(Capabilities.class).builder().build();
  53             Preconditions.checkArgument(change.getCreatedData().get(capabilitiesIdentifier) instanceof Capabilities);
  54             netconfCapabilityChangeBuilder.setAddedCapability(((Capabilities) change.getCreatedData().get(capabilitiesIdentifier)).getCapability());
  55             netconfCapabilityChangeBuilder.setDeletedCapability(Collections.<Uri>emptyList());
  56         } else {
  57             Preconditions.checkArgument(change.getUpdatedSubtree() instanceof Capabilities);
  58             final Set<Uri> currentState = Sets.newHashSet(((Capabilities) change.getUpdatedSubtree()).getCapability());
  59             final Set<Uri> previousState = Sets.newHashSet(((Capabilities) change.getOriginalSubtree()).getCapability());
  60
  61             netconfCapabilityChangeBuilder.setAddedCapability(Lists.newArrayList(Sets.difference(currentState, previousState)));
  62             netconfCapabilityChangeBuilder.setDeletedCapability(Lists.newArrayList(Sets.difference(previousState, currentState)));
  63         }
  64
  65         // TODO modified should be computed ... but why ?
  66         netconfCapabilityChangeBuilder.setModifiedCapability(Collections.<Uri>emptyList());
  67         return netconfCapabilityChangeBuilder.build();
  68     }
  69
  70     @Override
  71     public void close() throws Exception {
  72
  73     }
  74 }