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