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 = input -> input instanceof Identifiable<?>
  44         ? ((Identifiable<?>) input).getKey()
  45         : input;
  46
  47
  48     private final ListWriterCustomizer<D, K> customizer;
  49
  50     public CompositeListWriter(@Nonnull final Class<D> type,
  51                                @Nonnull final List<ChildWriter<? extends ChildOf<D>>> childWriters,
  52                                @Nonnull final List<ChildWriter<? extends Augmentation<D>>> augWriters,
  53                                @Nonnull final ListWriterCustomizer<D, K> customizer) {
  54         this(type, childWriters, augWriters, customizer, TraversalType.PREORDER);
  55     }
  56
  57     public CompositeListWriter(@Nonnull final Class<D> type,
  58                                @Nonnull final List<ChildWriter<? extends ChildOf<D>>> childWriters,
  59                                @Nonnull final List<ChildWriter<? extends Augmentation<D>>> augWriters,
  60                                @Nonnull final ListWriterCustomizer<D, K> customizer,
  61                                @Nonnull final TraversalType traversalType) {
  62         super(type, childWriters, augWriters, traversalType);
  63         this.customizer = customizer;
  64     }
  65
  66     public CompositeListWriter(@Nonnull final Class<D> type,
  67                                @Nonnull final List<ChildWriter<? extends ChildOf<D>>> childWriters,
  68                                @Nonnull final ListWriterCustomizer<D, K> customizer) {
  69         this(type, childWriters, RWUtils.<D>emptyAugWriterList(), customizer);
  70     }
  71
  72     public CompositeListWriter(@Nonnull final Class<D> type,
  73                                @Nonnull final ListWriterCustomizer<D, K> customizer) {
  74         this(type, RWUtils.<D>emptyChildWriterList(), RWUtils.<D>emptyAugWriterList(), customizer);
  75
  76     }
  77
  78     @Override
  79     protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
  80                                           @Nonnull final WriteContext ctx) throws WriteFailedException {
  81         customizer.writeCurrentAttributes(id, data, ctx);
  82     }
  83
  84     @Override
  85     protected void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
  86                                            @Nonnull final WriteContext ctx) throws WriteFailedException {
  87         customizer.deleteCurrentAttributes(id, dataBefore, ctx);
  88     }
  89
  90     @Override
  91     protected void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
  92                                            @Nonnull final D dataAfter, @Nonnull final WriteContext ctx)
  93         throws WriteFailedException {
  94         customizer.updateCurrentAttributes(id, dataBefore, dataAfter, ctx);
  95     }
  96
  97     @Override
  98     public void writeChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
  99                            @Nonnull final DataObject parentData,
 100                            @Nonnull final WriteContext ctx) throws WriteFailedException {
 101         final InstanceIdentifier<D> currentId = RWUtils.appendTypeToId(parentId, getManagedDataObjectType());
 102         final List<D> currentData = customizer.extract(currentId, parentData);
 103         for (D entry : currentData) {
 104             writeCurrent(currentId, entry, ctx);
 105         }
 106     }
 107
 108     @Override
 109     public void deleteChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
 110                             @Nonnull final DataObject parentDataBefore,
 111                             @Nonnull final WriteContext ctx) throws WriteFailedException {
 112         final InstanceIdentifier<D> currentId = RWUtils.appendTypeToId(parentId, getManagedDataObjectType());
 113         final List<D> dataBefore = customizer.extract(currentId, parentDataBefore);
 114         for (D entry : dataBefore) {
 115             deleteCurrent(currentId, entry, ctx);
 116         }
 117     }
 118
 119     @Override
 120     public void updateChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
 121                             @Nonnull final DataObject parentDataBefore, @Nonnull final DataObject parentDataAfter,
 122                             @Nonnull final WriteContext ctx) throws WriteFailedException {
 123         final InstanceIdentifier<D> currentId = RWUtils.appendTypeToId(parentId, getManagedDataObjectType());
 124         final ImmutableMap<Object, D>
 125             dataBefore = Maps.uniqueIndex(customizer.extract(currentId, parentDataBefore), INDEX_FUNCTION);
 126         final ImmutableMap<Object, D>
 127             dataAfter = Maps.uniqueIndex(customizer.extract(currentId, parentDataAfter), INDEX_FUNCTION);
 128
 129         for (Map.Entry<Object, D> after : dataAfter.entrySet()) {
 130             final D before = dataBefore.get(after.getKey());
 131             if(before == null) {
 132                 writeCurrent(currentId, after.getValue(), ctx);
 133             } else {
 134                 updateCurrent(currentId, before, after.getValue(), ctx);
 135             }
 136         }
 137
 138         // Delete the rest in dataBefore
 139         for (Object deletedNodeKey : Sets.difference(dataBefore.keySet(), dataAfter.keySet())) {
 140             final D deleted = dataBefore.get(deletedNodeKey);
 141             deleteCurrent(currentId, deleted, ctx);
 142         }
 143
 144     }
 145
 146     @Override
 147     protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx)
 148         throws WriteFailedException {
 149         // Make sure the key is present
 150         if(isWildcarded(id)) {
 151             super.writeCurrent(getSpecificId(id, data), data, ctx);
 152         } else {
 153             super.writeCurrent(id, data, ctx);
 154         }
 155     }
 156
 157     @Override
 158     protected void updateCurrent(final InstanceIdentifier<D> id, final D dataBefore, final D dataAfter,
 159                                  final WriteContext ctx) throws WriteFailedException {
 160         // Make sure the key is present
 161         if(isWildcarded(id)) {
 162             super.updateCurrent(getSpecificId(id, dataBefore), dataBefore, dataAfter, ctx);
 163         } else {
 164             super.updateCurrent(id, dataBefore, dataAfter, ctx);
 165         }
 166     }
 167
 168     @Override
 169     protected void deleteCurrent(final InstanceIdentifier<D> id, final D dataBefore, final WriteContext ctx)
 170         throws WriteFailedException {
 171         // Make sure the key is present
 172         if(isWildcarded(id)) {
 173             super.deleteCurrent(getSpecificId(id, dataBefore), dataBefore, ctx);
 174         } else {
 175             super.deleteCurrent(id, dataBefore, ctx);
 176         }
 177     }
 178
 179     private boolean isWildcarded(final InstanceIdentifier<D> id) {
 180         return id.firstIdentifierOf(getManagedDataObjectType().getTargetType()).isWildcarded();
 181     }
 182
 183     private InstanceIdentifier<D> getSpecificId(final InstanceIdentifier<D> currentId, final D current) {
 184         return RWUtils.replaceLastInId(currentId,
 185             new InstanceIdentifier.IdentifiableItem<>(currentId.getTargetType(), current.getKey()));
 186     }
 187 }