Sho SHIMIZU | c0e010dd | 2016-05-02 14:46:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 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 | package org.onosproject.net.resource; |
| 17 | |
| 18 | import com.esotericsoftware.kryo.Kryo; |
| 19 | import com.esotericsoftware.kryo.Serializer; |
| 20 | import com.esotericsoftware.kryo.io.Input; |
| 21 | import com.esotericsoftware.kryo.io.Output; |
| 22 | import com.google.common.annotations.Beta; |
| 23 | import com.google.common.collect.DiscreteDomain; |
| 24 | import com.google.common.collect.Range; |
| 25 | import com.google.common.collect.TreeRangeSet; |
| 26 | import org.onlab.util.ClosedOpenRange; |
| 27 | |
| 28 | import java.util.ArrayList; |
| 29 | import java.util.List; |
| 30 | import java.util.Set; |
| 31 | import java.util.stream.Collectors; |
| 32 | import java.util.stream.IntStream; |
| 33 | |
| 34 | /** |
| 35 | * Kryo serializer for {@link DiscreteResourceSet}. |
| 36 | */ |
| 37 | @Beta |
| 38 | public final class DiscreteResourceSetSerializer extends Serializer<DiscreteResourceSet> { |
| 39 | |
| 40 | public DiscreteResourceSetSerializer() { |
| 41 | super(false, true); |
| 42 | } |
| 43 | |
| 44 | @Override |
| 45 | public void write(Kryo kryo, Output output, DiscreteResourceSet object) { |
| 46 | TreeRangeSet<Integer> rangeSet = TreeRangeSet.create(); |
| 47 | object.values().stream() |
| 48 | .map(x -> object.codec().encode(x)) |
| 49 | .map(Range::singleton) |
| 50 | .map(x -> x.canonical(DiscreteDomain.integers())) |
| 51 | .forEach(rangeSet::add); |
| 52 | List<ClosedOpenRange> ranges = rangeSet.asRanges().stream() |
| 53 | .map(ClosedOpenRange::of) |
| 54 | .collect(Collectors.toList()); |
| 55 | kryo.writeObject(output, ranges); |
| 56 | kryo.writeClassAndObject(output, object.codec()); |
| 57 | kryo.writeObject(output, object.parent()); |
| 58 | } |
| 59 | |
| 60 | @Override |
| 61 | public DiscreteResourceSet read(Kryo kryo, Input input, Class<DiscreteResourceSet> type) { |
| 62 | @SuppressWarnings("unchecked") |
| 63 | List<ClosedOpenRange> ranges = kryo.readObject(input, ArrayList.class); |
| 64 | DiscreteResourceCodec codec = (DiscreteResourceCodec) kryo.readClassAndObject(input); |
| 65 | DiscreteResourceId parent = kryo.readObject(input, DiscreteResourceId.class); |
| 66 | |
| 67 | if (ranges.isEmpty()) { |
| 68 | return DiscreteResourceSet.empty(); |
| 69 | } |
| 70 | |
| 71 | Set<DiscreteResource> resources = ranges.stream() |
| 72 | .flatMapToInt(x -> IntStream.range(x.lowerBound(), x.upperBound())) |
| 73 | .mapToObj(x -> codec.decode(parent, x)) |
| 74 | .collect(Collectors.toSet()); |
| 75 | |
| 76 | return DiscreteResourceSet.of(resources, codec); |
| 77 | } |
| 78 | } |