infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/registry/FlatWriterRegistryBuilder.java

   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.translate.impl.write.registry;
  18
  19 import com.google.common.annotations.VisibleForTesting;
  20 import com.google.common.collect.ImmutableMap;
  21 import io.fd.honeycomb.translate.util.AbstractSubtreeManagerRegistryBuilderBuilder;
  22 import io.fd.honeycomb.translate.util.YangDAG;
  23 import io.fd.honeycomb.translate.write.Writer;
  24 import io.fd.honeycomb.translate.write.registry.ModifiableWriterRegistryBuilder;
  25 import io.fd.honeycomb.translate.write.registry.WriterRegistry;
  26 import io.fd.honeycomb.translate.write.registry.WriterRegistryBuilder;
  27 import org.opendaylight.yangtools.yang.binding.DataObject;
  28 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 import javax.annotation.Nonnull;
  33 import javax.annotation.concurrent.NotThreadSafe;
  34 import java.util.Set;
  35 import java.util.stream.Collectors;
  36
  37 /**
  38  * Builder for {@link FlatWriterRegistry} allowing users to specify inter-writer relationships.
  39  */
  40 @NotThreadSafe
  41 public final class FlatWriterRegistryBuilder
  42         extends AbstractSubtreeManagerRegistryBuilderBuilder<Writer<? extends DataObject>, WriterRegistry>
  43         implements ModifiableWriterRegistryBuilder, WriterRegistryBuilder {
  44
  45     private static final Logger LOG = LoggerFactory.getLogger(FlatWriterRegistryBuilder.class);
  46
  47     public FlatWriterRegistryBuilder(@Nonnull final YangDAG yangDAG) {
  48         super(yangDAG);
  49     }
  50
  51     @Override
  52     protected Writer<? extends DataObject> getSubtreeHandler(final @Nonnull Set<InstanceIdentifier<?>> handledChildren,
  53                                                              final @Nonnull Writer<? extends DataObject> writer) {
  54         return SubtreeWriter.createForWriter(handledChildren, writer);
  55     }
  56
  57     @Override
  58     protected Writer<? extends DataObject> getWildcardedSubtreeHandler(@Nonnull Writer<? extends DataObject> handler) {
  59         return SubtreeWriter.createWildcardedForWriter(handler);
  60     }
  61
  62     /**
  63      * Create FlatWriterRegistry with writers ordered according to submitted relationships.
  64      */
  65     @Override
  66     public WriterRegistry build() {
  67         final ImmutableMap<InstanceIdentifier<?>, Writer<?>> mappedWriters = getMappedHandlers();
  68         LOG.debug("Building writer registry with writers: {}",
  69                 mappedWriters.keySet().stream()
  70                         .map(InstanceIdentifier::getTargetType)
  71                         .map(Class::getSimpleName)
  72                         .collect(Collectors.joining(", ")));
  73         LOG.trace("Building writer registry with writers: {}", mappedWriters);
  74         return new FlatWriterRegistry(mappedWriters);
  75     }
  76
  77     @VisibleForTesting
  78     @Override
  79     protected ImmutableMap<InstanceIdentifier<?>, Writer<? extends DataObject>> getMappedHandlers() {
  80         return super.getMappedHandlers();
  81     }
  82 }