restconf/restconf-nb-bierman02/src/main/java/org/opendaylight/netconf/sal/restconf/impl/DataNormalizer.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.netconf.sal.restconf.impl;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.collect.ImmutableList;
  14 import java.util.ArrayList;
  15 import java.util.Iterator;
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Map.Entry;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  21 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  22 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
  23
  24 class DataNormalizer {
  25     private final DataNormalizationOperation<?> operation;
  26     private final EffectiveModelContext context;
  27
  28     DataNormalizer(final EffectiveModelContext ctx) {
  29         context = requireNonNull(ctx);
  30         operation = DataNormalizationOperation.from(ctx);
  31     }
  32
  33     Entry<YangInstanceIdentifier, SchemaInferenceStack> toNormalized(final YangInstanceIdentifier legacy) {
  34         List<PathArgument> normalizedArgs = new ArrayList<>();
  35
  36         DataNormalizationOperation<?> currentOp = operation;
  37         Iterator<PathArgument> arguments = legacy.getPathArguments().iterator();
  38         SchemaInferenceStack stack = SchemaInferenceStack.of(context);
  39
  40         try {
  41             while (arguments.hasNext()) {
  42                 PathArgument legacyArg = arguments.next();
  43                 currentOp = currentOp.enterChild(legacyArg, stack);
  44                 checkArgument(currentOp != null,
  45                         "Legacy Instance Identifier %s is not correct. Normalized Instance Identifier so far %s",
  46                         legacy, normalizedArgs);
  47                 while (currentOp.isMixin()) {
  48                     normalizedArgs.add(currentOp.getIdentifier());
  49                     currentOp = currentOp.enterChild(legacyArg.getNodeType(), stack);
  50                 }
  51                 normalizedArgs.add(legacyArg);
  52             }
  53         } catch (DataNormalizationException e) {
  54             throw new IllegalArgumentException("Failed to normalize path " + legacy, e);
  55         }
  56
  57         return Map.entry(YangInstanceIdentifier.create(normalizedArgs), stack);
  58     }
  59
  60     DataNormalizationOperation<?> getOperation(final YangInstanceIdentifier legacy)
  61             throws DataNormalizationException {
  62         DataNormalizationOperation<?> currentOp = operation;
  63
  64         for (PathArgument pathArgument : legacy.getPathArguments()) {
  65             currentOp = currentOp.getChild(pathArgument);
  66         }
  67         return currentOp;
  68     }
  69
  70     YangInstanceIdentifier toLegacy(final YangInstanceIdentifier normalized) throws DataNormalizationException {
  71         ImmutableList.Builder<PathArgument> legacyArgs = ImmutableList.builder();
  72         DataNormalizationOperation<?> currentOp = operation;
  73         for (PathArgument normalizedArg : normalized.getPathArguments()) {
  74             currentOp = currentOp.getChild(normalizedArg);
  75             if (!currentOp.isMixin()) {
  76                 legacyArgs.add(normalizedArg);
  77             }
  78         }
  79         return YangInstanceIdentifier.create(legacyArgs.build());
  80     }
  81 }