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