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