gerrit.fd Code Review - hc2vpp.git/blob

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package io.fd.honeycomb.v3po.translate.impl.write;
  18
  19 import com.google.common.base.Function;
  20 import com.google.common.collect.ImmutableMap;
  21 import com.google.common.collect.Maps;
  22 import com.google.common.collect.Sets;
  23 import io.fd.honeycomb.v3po.translate.impl.TraversalType;
  24 import io.fd.honeycomb.v3po.translate.spi.write.ListWriterCustomizer;
  25 import io.fd.honeycomb.v3po.translate.write.ChildWriter;
  26 import io.fd.honeycomb.v3po.translate.write.WriteContext;
  27 import io.fd.honeycomb.v3po.translate.util.RWUtils;
  28 import io.fd.honeycomb.v3po.translate.write.WriteFailedException;
  29 import java.util.List;
  30 import java.util.Map;
  31 import javax.annotation.Nonnull;
  32 import org.opendaylight.yangtools.yang.binding.Augmentation;
  33 import org.opendaylight.yangtools.yang.binding.ChildOf;
  34 import org.opendaylight.yangtools.yang.binding.DataObject;
  35 import org.opendaylight.yangtools.yang.binding.Identifiable;
  36 import org.opendaylight.yangtools.yang.binding.Identifier;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38
  39 public class CompositeListWriter<D extends DataObject & Identifiable<K>, K extends Identifier<D>> extends
  40     AbstractCompositeWriter<D>
  41     implements ChildWriter<D> {
  42
  43     public static final Function<DataObject, Object> INDEX_FUNCTION = new Function<DataObject, Object>() {
  44         @Override
  45         public Object apply(final DataObject input) {
  46             return input instanceof Identifiable<?>
  47                 ? ((Identifiable<?>) input).getKey()
  48                 : input;
  49         }
  50     };
  51
  52
  53     private final ListWriterCustomizer<D, K> customizer;
  54
  55     public CompositeListWriter(@Nonnull final Class<D> type,
  56                                @Nonnull final List<ChildWriter<? extends ChildOf<D>>> childWriters,
  57                                @Nonnull final List<ChildWriter<? extends Augmentation<D>>> augWriters,
  58                                @Nonnull final ListWriterCustomizer<D, K> customizer) {
  59         this(type, childWriters, augWriters, customizer, TraversalType.PREORDER);
  60     }
  61
  62     public CompositeListWriter(@Nonnull final Class<D> type,
  63                                @Nonnull final List<ChildWriter<? extends ChildOf<D>>> childWriters,
  64                                @Nonnull final List<ChildWriter<? extends Augmentation<D>>> augWriters,
  65                                @Nonnull final ListWriterCustomizer<D, K> customizer,
  66                                @Nonnull final TraversalType traversalType) {
  67         super(type, childWriters, augWriters, traversalType);
  68         this.customizer = customizer;
  69     }
  70
  71     public CompositeListWriter(@Nonnull final Class<D> type,
  72                                @Nonnull final List<ChildWriter<? extends ChildOf<D>>> childWriters,
  73                                @Nonnull final ListWriterCustomizer<D, K> customizer) {
  74         this(type, childWriters, RWUtils.<D>emptyAugWriterList(), customizer);
  75     }
  76
  77     public CompositeListWriter(@Nonnull final Class<D> type,
  78                                @Nonnull final ListWriterCustomizer<D, K> customizer) {
  79         this(type, RWUtils.<D>emptyChildWriterList(), RWUtils.<D>emptyAugWriterList(), customizer);
  80
  81     }
  82
  83     @Override
  84     protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
  85                                           @Nonnull final WriteContext ctx) throws WriteFailedException {
  86         customizer.writeCurrentAttributes(id, data, ctx.getContext());
  87     }
  88
  89     @Override
  90     protected void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
  91                                            @Nonnull final WriteContext ctx) throws WriteFailedException {
  92         customizer.deleteCurrentAttributes(id, dataBefore, ctx.getContext());
  93     }
  94
  95     @Override
  96     protected void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
  97                                            @Nonnull final D dataAfter, @Nonnull final WriteContext ctx)
  98         throws WriteFailedException {
  99         customizer.updateCurrentAttributes(id, dataBefore, dataAfter, ctx.getContext());
 100     }
 101
 102     @Override
 103     public void writeChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
 104                            @Nonnull final DataObject parentData,
 105                            @Nonnull final WriteContext ctx) throws WriteFailedException {
 106         final InstanceIdentifier<D> currentId = RWUtils.appendTypeToId(parentId, getManagedDataObjectType());
 107         final List<D> currentData = customizer.extract(currentId, parentData);
 108         for (D entry : currentData) {
 109             writeCurrent(currentId, entry, ctx);
 110         }
 111     }
 112
 113     @Override
 114     public void deleteChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
 115                             @Nonnull final DataObject parentDataBefore,
 116                             @Nonnull final WriteContext ctx) throws WriteFailedException {
 117         final InstanceIdentifier<D> currentId = RWUtils.appendTypeToId(parentId, getManagedDataObjectType());
 118         final List<D> dataBefore = customizer.extract(currentId, parentDataBefore);
 119         for (D entry : dataBefore) {
 120             deleteCurrent(currentId, entry, ctx);
 121         }
 122     }
 123
 124     @Override
 125     public void updateChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
 126                             @Nonnull final DataObject parentDataBefore, @Nonnull final DataObject parentDataAfter,
 127                             @Nonnull final WriteContext ctx) throws WriteFailedException {
 128         final InstanceIdentifier<D> currentId = RWUtils.appendTypeToId(parentId, getManagedDataObjectType());
 129         final ImmutableMap<Object, D>
 130             dataBefore = Maps.uniqueIndex(customizer.extract(currentId, parentDataBefore), INDEX_FUNCTION);
 131         final ImmutableMap<Object, D>
 132             dataAfter = Maps.uniqueIndex(customizer.extract(currentId, parentDataAfter), INDEX_FUNCTION);
 133
 134         for (Map.Entry<Object, D> after : dataAfter.entrySet()) {
 135             final D before = dataBefore.get(after.getKey());
 136             if(before == null) {
 137                 writeCurrent(currentId, after.getValue(), ctx);
 138             } else {
 139                 updateCurrent(currentId, before, after.getValue(), ctx);
 140             }
 141         }
 142
 143         // Delete the rest in dataBefore
 144         for (Object deletedNodeKey : Sets.difference(dataBefore.keySet(), dataAfter.keySet())) {
 145             final D deleted = dataBefore.get(deletedNodeKey);
 146             deleteCurrent(currentId, deleted, ctx);
 147         }
 148
 149     }
 150
 151     @Override
 152     protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx)
 153         throws WriteFailedException {
 154         // Make sure the key is present
 155         if(isWildcarded(id)) {
 156             super.writeCurrent(getSpecificId(id, data), data, ctx);
 157         } else {
 158             super.writeCurrent(id, data, ctx);
 159         }
 160     }
 161
 162     @Override
 163     protected void updateCurrent(final InstanceIdentifier<D> id, final D dataBefore, final D dataAfter,
 164                                  final WriteContext ctx) throws WriteFailedException {
 165         // Make sure the key is present
 166         if(isWildcarded(id)) {
 167             super.updateCurrent(getSpecificId(id, dataBefore), dataBefore, dataAfter, ctx);
 168         } else {
 169             super.updateCurrent(id, dataBefore, dataAfter, ctx);
 170         }
 171     }
 172
 173     @Override
 174     protected void deleteCurrent(final InstanceIdentifier<D> id, final D dataBefore, final WriteContext ctx)
 175         throws WriteFailedException {
 176         // Make sure the key is present
 177         if(isWildcarded(id)) {
 178             super.deleteCurrent(getSpecificId(id, dataBefore), dataBefore, ctx);
 179         } else {
 180             super.deleteCurrent(id, dataBefore, ctx);
 181         }
 182     }
 183
 184     private boolean isWildcarded(final InstanceIdentifier<D> id) {
 185         return id.firstIdentifierOf(getManagedDataObjectType().getTargetType()).isWildcarded();
 186     }
 187
 188     private InstanceIdentifier<D> getSpecificId(final InstanceIdentifier<D> currentId, final D current) {
 189         return RWUtils.replaceLastInId(currentId,
 190             new InstanceIdentifier.IdentifiableItem<>(currentId.getTargetType(), current.getKey()));
 191     }
 192 }