binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/spi/AbstractForwardedDataBroker.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.javav2.dom.adapter.spi;
   9
  10 import com.google.common.annotations.Beta;
  11 import java.util.HashMap;
  12 import java.util.HashSet;
  13 import java.util.Map;
  14 import java.util.Map.Entry;
  15 import java.util.Optional;
  16 import java.util.Set;
  17 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  18 import org.opendaylight.mdsal.binding.javav2.spec.base.InstanceIdentifier;
  19 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  20 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  21 import org.opendaylight.yangtools.concepts.Delegator;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  24 import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * This abstract class forwards DOM Data Broker and provides de-serialization of DOM data to Binding data.
  30  */
  31 @Beta
  32 public abstract class AbstractForwardedDataBroker implements Delegator<DOMDataBroker>, AutoCloseable {
  33
  34     private static final Logger LOG = LoggerFactory.getLogger(AbstractForwardedDataBroker.class);
  35
  36     // The Broker to whom we do all forwarding
  37     private final DOMDataBroker domDataBroker;
  38
  39     private final BindingToNormalizedNodeCodec codec;
  40
  41     protected AbstractForwardedDataBroker(final DOMDataBroker domDataBroker, final BindingToNormalizedNodeCodec codec) {
  42         this.domDataBroker = domDataBroker;
  43         this.codec = codec;
  44     }
  45
  46     protected BindingToNormalizedNodeCodec getCodec() {
  47         return codec;
  48     }
  49
  50     @Override
  51     public DOMDataBroker getDelegate() {
  52         return domDataBroker;
  53     }
  54
  55     protected Map<InstanceIdentifier<? extends TreeNode>, TreeNode> toBinding(
  56             final InstanceIdentifier<? extends TreeNode> path,
  57             final Map<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> normalized) {
  58         final Map<InstanceIdentifier<? extends TreeNode>, TreeNode> newMap = new HashMap<>();
  59
  60         for (final Map.Entry<YangInstanceIdentifier, ? extends NormalizedNode<?, ?>> entry : normalized.entrySet()) {
  61             try {
  62                 final Optional<Entry<InstanceIdentifier<? extends TreeNode>, TreeNode>> potential =
  63                         getCodec().toBinding(entry);
  64                 if (potential.isPresent()) {
  65                     final Entry<InstanceIdentifier<? extends TreeNode>, TreeNode> binding = potential.get();
  66                     newMap.put(binding.getKey(), binding.getValue());
  67                 }
  68             } catch (final DeserializationException e) {
  69                 LOG.warn("Failed to transform {}, omitting it", entry, e);
  70             }
  71         }
  72         return newMap;
  73     }
  74
  75     protected Set<InstanceIdentifier<?>> toBinding(final InstanceIdentifier<?> path,
  76             final Set<YangInstanceIdentifier> normalized) {
  77         final Set<InstanceIdentifier<?>> hashSet = new HashSet<>();
  78         for (final YangInstanceIdentifier normalizedPath : normalized) {
  79             try {
  80                 final Optional<InstanceIdentifier<? extends TreeNode>> potential =
  81                         getCodec().toBinding(normalizedPath);
  82                 if (potential.isPresent()) {
  83                     final InstanceIdentifier<? extends TreeNode> binding = potential.get();
  84                     hashSet.add(binding);
  85                 } else if (normalizedPath
  86                         .getLastPathArgument() instanceof YangInstanceIdentifier.AugmentationIdentifier) {
  87                     hashSet.add(path);
  88                 }
  89             } catch (final DeserializationException e) {
  90                 LOG.warn("Failed to transform {}, omitting it", normalizedPath, e);
  91             }
  92         }
  93         return hashSet;
  94     }
  95
  96     @SuppressWarnings("unchecked")
  97     protected Optional<TreeNode> toBindingData(final InstanceIdentifier<?> path, final NormalizedNode<?, ?> data) {
  98         if (path.isWildcarded()) {
  99             return Optional.empty();
 100         }
 101         return (Optional<TreeNode>) getCodec().deserializeFunction(path)
 102                 .apply(Optional.of(data));
 103     }
 104
 105     @Override
 106     public void close() {
 107         // Intentional NOOP
 108     }
 109 }