Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | 5ab426f | 2016-04-09 01:19:45 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Laboratory |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 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.store.primitives.impl; |
| 17 | |
| 18 | import static com.google.common.base.Preconditions.checkNotNull; |
| 19 | |
| 20 | import java.util.List; |
| 21 | import java.util.Map; |
Madan Jampani | e14a09c | 2016-02-11 10:43:21 -0800 | [diff] [blame] | 22 | import java.util.Set; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 23 | import java.util.TreeMap; |
| 24 | |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 25 | import org.onosproject.cluster.PartitionId; |
| 26 | import org.onosproject.store.primitives.DistributedPrimitiveCreator; |
| 27 | import org.onosproject.store.service.AsyncAtomicCounter; |
| 28 | import org.onosproject.store.service.AsyncAtomicValue; |
| 29 | import org.onosproject.store.service.AsyncConsistentMap; |
| 30 | import org.onosproject.store.service.AsyncDistributedSet; |
| 31 | import org.onosproject.store.service.AsyncLeaderElector; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 32 | import org.onosproject.store.service.Serializer; |
Madan Jampani | 819d61d | 2016-07-25 20:29:43 -0700 | [diff] [blame] | 33 | import org.onosproject.store.service.WorkQueue; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 34 | |
Madan Jampani | 27077eb | 2016-02-22 14:38:32 -0800 | [diff] [blame] | 35 | import com.google.common.base.Charsets; |
Madan Jampani | e14a09c | 2016-02-11 10:43:21 -0800 | [diff] [blame] | 36 | import com.google.common.collect.ImmutableSet; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 37 | import com.google.common.collect.Lists; |
| 38 | import com.google.common.collect.Maps; |
Madan Jampani | e14a09c | 2016-02-11 10:43:21 -0800 | [diff] [blame] | 39 | import com.google.common.collect.Sets; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 40 | import com.google.common.hash.Hashing; |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 41 | |
| 42 | /** |
| 43 | * {@code DistributedPrimitiveCreator} that federates responsibility for creating |
| 44 | * distributed primitives to a collection of other {@link DistributedPrimitiveCreator creators}. |
| 45 | */ |
| 46 | public class FederatedDistributedPrimitiveCreator implements DistributedPrimitiveCreator { |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 47 | private final TreeMap<PartitionId, DistributedPrimitiveCreator> members; |
| 48 | private final List<PartitionId> sortedMemberPartitionIds; |
| 49 | |
| 50 | public FederatedDistributedPrimitiveCreator(Map<PartitionId, DistributedPrimitiveCreator> members) { |
| 51 | this.members = Maps.newTreeMap(); |
| 52 | this.members.putAll(checkNotNull(members)); |
| 53 | this.sortedMemberPartitionIds = Lists.newArrayList(members.keySet()); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public <K, V> AsyncConsistentMap<K, V> newAsyncConsistentMap(String name, Serializer serializer) { |
| 58 | checkNotNull(name); |
| 59 | checkNotNull(serializer); |
| 60 | Map<PartitionId, AsyncConsistentMap<K, V>> maps = |
| 61 | Maps.transformValues(members, |
| 62 | partition -> partition.newAsyncConsistentMap(name, serializer)); |
| 63 | Hasher<K> hasher = key -> { |
Madan Jampani | 2843ec8 | 2016-06-02 14:08:16 -0700 | [diff] [blame] | 64 | int hashCode = Hashing.sha256().hashBytes(serializer.encode(key)).asInt(); |
| 65 | return sortedMemberPartitionIds.get(Math.abs(hashCode) % members.size()); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 66 | }; |
| 67 | return new PartitionedAsyncConsistentMap<>(name, maps, hasher); |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public <E> AsyncDistributedSet<E> newAsyncDistributedSet(String name, Serializer serializer) { |
| 72 | return DistributedPrimitives.newSetFromMap(newAsyncConsistentMap(name, serializer)); |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public AsyncAtomicCounter newAsyncCounter(String name) { |
| 77 | return getCreator(name).newAsyncCounter(name); |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public <V> AsyncAtomicValue<V> newAsyncAtomicValue(String name, Serializer serializer) { |
| 82 | return getCreator(name).newAsyncAtomicValue(name, serializer); |
| 83 | } |
| 84 | |
| 85 | @Override |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 86 | public AsyncLeaderElector newAsyncLeaderElector(String name) { |
Madan Jampani | 27077eb | 2016-02-22 14:38:32 -0800 | [diff] [blame] | 87 | checkNotNull(name); |
| 88 | Map<PartitionId, AsyncLeaderElector> leaderElectors = |
| 89 | Maps.transformValues(members, |
| 90 | partition -> partition.newAsyncLeaderElector(name)); |
| 91 | Hasher<String> hasher = topic -> { |
Madan Jampani | 2843ec8 | 2016-06-02 14:08:16 -0700 | [diff] [blame] | 92 | int hashCode = Hashing.sha256().hashString(topic, Charsets.UTF_8).asInt(); |
| 93 | return sortedMemberPartitionIds.get(Math.abs(hashCode) % members.size()); |
Madan Jampani | 27077eb | 2016-02-22 14:38:32 -0800 | [diff] [blame] | 94 | }; |
| 95 | return new PartitionedAsyncLeaderElector(name, leaderElectors, hasher); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 96 | } |
| 97 | |
Madan Jampani | e14a09c | 2016-02-11 10:43:21 -0800 | [diff] [blame] | 98 | @Override |
Madan Jampani | 35708a9 | 2016-07-06 10:48:19 -0700 | [diff] [blame] | 99 | public <E> WorkQueue<E> newWorkQueue(String name, Serializer serializer) { |
| 100 | return getCreator(name).newWorkQueue(name, serializer); |
| 101 | } |
| 102 | |
| 103 | @Override |
Madan Jampani | e14a09c | 2016-02-11 10:43:21 -0800 | [diff] [blame] | 104 | public Set<String> getAsyncConsistentMapNames() { |
| 105 | return members.values() |
| 106 | .stream() |
| 107 | .map(DistributedPrimitiveCreator::getAsyncConsistentMapNames) |
| 108 | .reduce(Sets::union) |
| 109 | .orElse(ImmutableSet.of()); |
| 110 | } |
| 111 | |
| 112 | @Override |
| 113 | public Set<String> getAsyncAtomicCounterNames() { |
| 114 | return members.values() |
| 115 | .stream() |
| 116 | .map(DistributedPrimitiveCreator::getAsyncAtomicCounterNames) |
| 117 | .reduce(Sets::union) |
| 118 | .orElse(ImmutableSet.of()); |
| 119 | } |
| 120 | |
Madan Jampani | 35708a9 | 2016-07-06 10:48:19 -0700 | [diff] [blame] | 121 | @Override |
| 122 | public Set<String> getWorkQueueNames() { |
| 123 | return members.values() |
| 124 | .stream() |
| 125 | .map(DistributedPrimitiveCreator::getWorkQueueNames) |
| 126 | .reduce(Sets::union) |
| 127 | .orElse(ImmutableSet.of()); |
| 128 | } |
| 129 | |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 130 | /** |
| 131 | * Returns the {@code DistributedPrimitiveCreator} to use for hosting a primitive. |
| 132 | * @param name primitive name |
| 133 | * @return primitive creator |
| 134 | */ |
| 135 | private DistributedPrimitiveCreator getCreator(String name) { |
Madan Jampani | 2843ec8 | 2016-06-02 14:08:16 -0700 | [diff] [blame] | 136 | int hashCode = Hashing.sha256().hashString(name, Charsets.UTF_8).asInt(); |
| 137 | return members.get(sortedMemberPartitionIds.get(Math.abs(hashCode) % members.size())); |
Madan Jampani | 551d0d2 | 2016-02-01 12:51:48 -0800 | [diff] [blame] | 138 | } |
| 139 | } |