binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/BindingDOMDataTreeListenerAdapter.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 package org.opendaylight.mdsal.binding.dom.adapter;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.collect.Maps;
  12 import java.util.ArrayList;
  13 import java.util.Collection;
  14 import java.util.List;
  15 import java.util.Map;
  16 import java.util.Map.Entry;
  17 import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
  18 import org.opendaylight.mdsal.binding.api.DataTreeListener;
  19 import org.opendaylight.mdsal.binding.api.DataTreeListeningException;
  20 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  21 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  22 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeListener;
  24 import org.opendaylight.mdsal.dom.api.DOMDataTreeListeningException;
  25 import org.opendaylight.yangtools.yang.binding.DataObject;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  28 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
  29
  30 public class BindingDOMDataTreeListenerAdapter implements DOMDataTreeListener {
  31
  32     private final DataTreeListener delegate;
  33     private final BindingToNormalizedNodeCodec codec;
  34     private final LogicalDatastoreType store;
  35
  36
  37     protected BindingDOMDataTreeListenerAdapter(final DataTreeListener delegate,
  38             final BindingToNormalizedNodeCodec codec, final LogicalDatastoreType store) {
  39         this.delegate = Preconditions.checkNotNull(delegate, "delegate");
  40         this.codec = Preconditions.checkNotNull(codec, "codec");
  41         this.store = Preconditions.checkNotNull(store, "store");
  42     }
  43
  44     @Override
  45     public void onDataTreeChanged(final Collection<DataTreeCandidate> domChanges,
  46             final Map<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domSubtrees) {
  47
  48         final Collection<DataTreeModification<?>> changes = toBinding(domChanges);
  49         final Map<DataTreeIdentifier<?>, DataObject> subtrees = toBinding(domSubtrees);
  50
  51         delegate.onDataTreeChanged(changes, subtrees);
  52     }
  53
  54     private Map<DataTreeIdentifier<?>, DataObject> toBinding(
  55             final Map<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domSubtrees) {
  56         // FIXME: Introduce lazy translating map
  57         final Map<DataTreeIdentifier<?>, DataObject> ret = Maps.newHashMapWithExpectedSize(domSubtrees.size());
  58         for (final Entry<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domEntry : domSubtrees.entrySet()) {
  59             final Entry<InstanceIdentifier<?>, DataObject> bindingEntry =
  60                     codec.fromNormalizedNode(domEntry.getKey().getRootIdentifier(), domEntry.getValue());
  61             ret.put(DataTreeIdentifier.create(store, bindingEntry.getKey()), bindingEntry.getValue());
  62         }
  63         return ret;
  64     }
  65
  66     @SuppressWarnings("unchecked")
  67     private Collection<DataTreeModification<?>> toBinding(final Collection<DataTreeCandidate> domChanges) {
  68         return Collection.class.cast(LazyDataTreeModification.from(codec, domChanges, store));
  69     }
  70
  71     @Override
  72     public void onDataTreeFailed(final Collection<DOMDataTreeListeningException> causes) {
  73         List<DataTreeListeningException> bindingCauses = new ArrayList<>(causes.size());
  74         for (DOMDataTreeListeningException cause : causes) {
  75             bindingCauses.add(mapException(cause));
  76         }
  77
  78         delegate.onDataTreeFailed(bindingCauses);
  79     }
  80
  81     private static DataTreeListeningException mapException(final DOMDataTreeListeningException cause) {
  82         // FIXME: Extend logic
  83         return new DataTreeListeningException(cause.getMessage(), cause);
  84     }
  85 }