lisp/lisp2vpp/src/main/java/io/fd/honeycomb/lisp/translate/read/MapResolverCustomizer.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.lisp.translate.read;
  18
  19 import static io.fd.honeycomb.translate.util.read.cache.EntityDumpExecutor.NO_PARAMS;
  20
  21 import com.google.common.base.Optional;
  22 import io.fd.honeycomb.lisp.translate.read.dump.executor.MapResolversDumpExecutor;
  23 import io.fd.honeycomb.translate.read.ReadContext;
  24 import io.fd.honeycomb.translate.read.ReadFailedException;
  25 import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
  26 import io.fd.honeycomb.translate.util.RWUtils;
  27 import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
  28 import io.fd.honeycomb.translate.vpp.util.AddressTranslator;
  29 import io.fd.honeycomb.translate.vpp.util.FutureJVppCustomizer;
  30 import io.fd.vpp.jvpp.core.dto.LispMapResolverDetails;
  31 import io.fd.vpp.jvpp.core.dto.LispMapResolverDetailsReplyDump;
  32 import io.fd.vpp.jvpp.core.future.FutureJVppCore;
  33 import java.util.Arrays;
  34 import java.util.Collections;
  35 import java.util.List;
  36 import java.util.stream.Collectors;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev160520.map.resolvers.grouping.MapResolversBuilder;
  39 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev160520.map.resolvers.grouping.map.resolvers.MapResolver;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev160520.map.resolvers.grouping.map.resolvers.MapResolverBuilder;
  41 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev160520.map.resolvers.grouping.map.resolvers.MapResolverKey;
  42 import org.opendaylight.yangtools.concepts.Builder;
  43 import org.opendaylight.yangtools.yang.binding.DataObject;
  44 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  45 import org.slf4j.Logger;
  46 import org.slf4j.LoggerFactory;
  47
  48 public class MapResolverCustomizer extends FutureJVppCustomizer
  49         implements ListReaderCustomizer<MapResolver, MapResolverKey, MapResolverBuilder>, AddressTranslator {
  50
  51     private static final Logger LOG = LoggerFactory.getLogger(MapResolverCustomizer.class);
  52     private static final String MAP_RESOLVERS_CACHE_ID = MapResolverCustomizer.class.getName();
  53
  54     private final DumpCacheManager<LispMapResolverDetailsReplyDump, Void> dumpManager;
  55
  56     public MapResolverCustomizer(FutureJVppCore futureJvpp) {
  57         super(futureJvpp);
  58         this.dumpManager = new DumpCacheManager.DumpCacheManagerBuilder<LispMapResolverDetailsReplyDump, Void>()
  59                 .withExecutor(new MapResolversDumpExecutor((futureJvpp)))
  60                 .build();
  61     }
  62
  63     @Override
  64     public MapResolverBuilder getBuilder(InstanceIdentifier<MapResolver> id) {
  65         return new MapResolverBuilder();
  66     }
  67
  68     @Override
  69     public void readCurrentAttributes(InstanceIdentifier<MapResolver> id, MapResolverBuilder builder, ReadContext ctx)
  70             throws ReadFailedException {
  71         LOG.debug("Reading attributes...");
  72
  73         final Optional<LispMapResolverDetailsReplyDump> dumpOptional =
  74                 dumpManager.getDump(id, MAP_RESOLVERS_CACHE_ID, ctx.getModificationCache(), NO_PARAMS);
  75
  76         if (!dumpOptional.isPresent() || dumpOptional.get().lispMapResolverDetails.isEmpty()) {
  77             LOG.warn("No data dumped");
  78             return;
  79         }
  80
  81         final MapResolverKey key = id.firstKeyOf(MapResolver.class);
  82         final LispMapResolverDetails mapResolverDetails =
  83                 dumpOptional.get().lispMapResolverDetails.stream()
  84                         .filter(a -> addressesEqual(key.getIpAddress(),
  85                                 arrayToIpAddressReversed(byteToBoolean(a.isIpv6), a.ipAddress)))
  86                         .collect(RWUtils.singleItemCollector());
  87
  88         builder.setKey(key);
  89         builder.setIpAddress(
  90                 arrayToIpAddress(byteToBoolean(mapResolverDetails.isIpv6), mapResolverDetails.ipAddress));
  91     }
  92
  93     // safest way to compare addresses - prevents returning false while using different types from hierarchy
  94     // Ex. Key for MapResolver contains Ipv4Address as value but we translate addresses from binary data to Ipv4AddressNoZone
  95     private boolean addressesEqual(final IpAddress left, final IpAddress right) {
  96         return Arrays.equals(left.getValue(), right.getValue());
  97     }
  98
  99     @Override
 100     public List<MapResolverKey> getAllIds(InstanceIdentifier<MapResolver> id, ReadContext context)
 101             throws ReadFailedException {
 102         LOG.debug("Dumping MapResolver...");
 103
 104         final Optional<LispMapResolverDetailsReplyDump> dumpOptional =
 105                 dumpManager.getDump(id, MAP_RESOLVERS_CACHE_ID, context.getModificationCache(), NO_PARAMS);
 106
 107         if (!dumpOptional.isPresent() || dumpOptional.get().lispMapResolverDetails.isEmpty()) {
 108             return Collections.emptyList();
 109         }
 110
 111         return dumpOptional.get().lispMapResolverDetails.stream()
 112                 .map(resolver -> new MapResolverKey(
 113                         arrayToIpAddressReversed(byteToBoolean(resolver.isIpv6), resolver.ipAddress)))
 114                 .collect(Collectors.toList());
 115     }
 116
 117     @Override
 118     public void merge(Builder<? extends DataObject> builder, List<MapResolver> readData) {
 119         ((MapResolversBuilder) builder).setMapResolver(readData);
 120     }
 121 }