Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [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 | |
| 17 | package org.onosproject.store.primitives.impl; |
| 18 | |
| 19 | import java.util.Map; |
| 20 | import java.util.concurrent.CompletableFuture; |
| 21 | |
Sithara Punnassery | 61a8025 | 2017-08-07 11:16:08 -0700 | [diff] [blame] | 22 | import org.onosproject.store.primitives.NodeUpdate; |
| 23 | import org.onosproject.store.primitives.TransactionId; |
Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [diff] [blame] | 24 | import org.onosproject.store.service.AsyncDocumentTree; |
| 25 | import org.onosproject.store.service.DocumentPath; |
| 26 | import org.onosproject.store.service.DocumentTreeEvent; |
| 27 | import org.onosproject.store.service.DocumentTreeListener; |
| 28 | import org.onosproject.store.service.Serializer; |
Sithara Punnassery | 61a8025 | 2017-08-07 11:16:08 -0700 | [diff] [blame] | 29 | import org.onosproject.store.service.TransactionLog; |
| 30 | import org.onosproject.store.service.Version; |
Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [diff] [blame] | 31 | import org.onosproject.store.service.Versioned; |
| 32 | |
| 33 | import com.google.common.collect.Maps; |
| 34 | |
| 35 | /** |
| 36 | * Default implementation of {@link AsyncDocumentTree}. |
| 37 | * <p> |
| 38 | * This implementation delegates execution to a backing tree implemented on top of Atomix framework. |
| 39 | * |
Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [diff] [blame] | 40 | * @param <V> tree node value type. |
| 41 | */ |
| 42 | public class DefaultDistributedDocumentTree<V> implements AsyncDocumentTree<V> { |
| 43 | |
| 44 | private final String name; |
| 45 | private final AsyncDocumentTree<byte[]> backingTree; |
| 46 | private final Serializer serializer; |
| 47 | private final Map<DocumentTreeListener<V>, InternalBackingDocumentTreeListener> listeners = |
| 48 | Maps.newIdentityHashMap(); |
| 49 | |
| 50 | DefaultDistributedDocumentTree(String name, AsyncDocumentTree<byte[]> backingTree, Serializer serializer) { |
| 51 | this.name = name; |
| 52 | this.backingTree = backingTree; |
| 53 | this.serializer = serializer; |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public String name() { |
| 58 | return name; |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public Type primitiveType() { |
| 63 | return backingTree.primitiveType(); |
| 64 | } |
| 65 | |
| 66 | @Override |
| 67 | public DocumentPath root() { |
| 68 | return backingTree.root(); |
| 69 | } |
| 70 | |
| 71 | @Override |
| 72 | public CompletableFuture<Map<String, Versioned<V>>> getChildren(DocumentPath path) { |
| 73 | return backingTree.getChildren(path) |
| 74 | .thenApply(map -> Maps.transformValues(map, v -> v.map(serializer::decode))); |
| 75 | } |
| 76 | |
| 77 | @Override |
| 78 | public CompletableFuture<Versioned<V>> get(DocumentPath path) { |
| 79 | return backingTree.get(path) |
| 80 | .thenApply(v -> v == null ? null : v.map(serializer::decode)); |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public CompletableFuture<Versioned<V>> set(DocumentPath path, V value) { |
| 85 | return backingTree.set(path, serializer.encode(value)) |
| 86 | .thenApply(v -> v == null ? null : v.map(serializer::decode)); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public CompletableFuture<Boolean> create(DocumentPath path, V value) { |
| 91 | return backingTree.create(path, serializer.encode(value)); |
| 92 | } |
| 93 | |
| 94 | @Override |
Madan Jampani | 8698328 | 2016-09-15 14:55:48 -0700 | [diff] [blame] | 95 | public CompletableFuture<Boolean> createRecursive(DocumentPath path, V value) { |
| 96 | return backingTree.createRecursive(path, serializer.encode(value)); |
| 97 | } |
| 98 | |
| 99 | @Override |
Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [diff] [blame] | 100 | public CompletableFuture<Boolean> replace(DocumentPath path, V newValue, long version) { |
| 101 | return backingTree.replace(path, serializer.encode(newValue), version); |
| 102 | } |
| 103 | |
| 104 | @Override |
| 105 | public CompletableFuture<Boolean> replace(DocumentPath path, V newValue, V currentValue) { |
| 106 | return backingTree.replace(path, serializer.encode(newValue), serializer.encode(currentValue)); |
| 107 | } |
| 108 | |
| 109 | @Override |
| 110 | public CompletableFuture<Versioned<V>> removeNode(DocumentPath path) { |
| 111 | return backingTree.removeNode(path) |
| 112 | .thenApply(v -> v == null ? null : v.map(serializer::decode)); |
| 113 | } |
| 114 | |
Sithara Punnassery | 61a8025 | 2017-08-07 11:16:08 -0700 | [diff] [blame] | 115 | |
| 116 | @Override |
| 117 | public CompletableFuture<Version> begin(TransactionId transactionId) { |
| 118 | return backingTree.begin(transactionId); |
| 119 | } |
| 120 | |
| 121 | @Override |
| 122 | public CompletableFuture<Boolean> prepare(TransactionLog<NodeUpdate<V>> transactionLog) { |
| 123 | return backingTree.prepare(transactionLog.map(record -> record.map(serializer::encode))); |
| 124 | } |
| 125 | |
| 126 | @Override |
| 127 | public CompletableFuture<Void> commit(TransactionId transactionId) { |
| 128 | return backingTree.commit(transactionId); |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public CompletableFuture<Void> rollback(TransactionId transactionId) { |
| 133 | return backingTree.rollback(transactionId); |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public CompletableFuture<Boolean> prepareAndCommit(TransactionLog<NodeUpdate<V>> transactionLog) { |
| 138 | return backingTree.prepareAndCommit(transactionLog.map(record -> record.map(serializer::encode))); |
| 139 | } |
| 140 | |
| 141 | |
Madan Jampani | 2914e4e | 2016-09-13 17:48:56 -0700 | [diff] [blame] | 142 | @Override |
| 143 | public CompletableFuture<Void> addListener(DocumentPath path, DocumentTreeListener<V> listener) { |
| 144 | synchronized (listeners) { |
| 145 | InternalBackingDocumentTreeListener backingListener = |
| 146 | listeners.computeIfAbsent(listener, k -> new InternalBackingDocumentTreeListener(listener)); |
| 147 | return backingTree.addListener(path, backingListener); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | @Override |
| 152 | public CompletableFuture<Void> removeListener(DocumentTreeListener<V> listener) { |
| 153 | synchronized (listeners) { |
| 154 | InternalBackingDocumentTreeListener backingListener = listeners.remove(listener); |
| 155 | if (backingListener != null) { |
| 156 | return backingTree.removeListener(backingListener); |
| 157 | } else { |
| 158 | return CompletableFuture.completedFuture(null); |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | private class InternalBackingDocumentTreeListener implements DocumentTreeListener<byte[]> { |
| 164 | |
| 165 | private final DocumentTreeListener<V> listener; |
| 166 | |
| 167 | InternalBackingDocumentTreeListener(DocumentTreeListener<V> listener) { |
| 168 | this.listener = listener; |
| 169 | } |
| 170 | |
| 171 | @Override |
| 172 | public void event(DocumentTreeEvent<byte[]> event) { |
| 173 | listener.event(new DocumentTreeEvent<V>(event.path(), |
| 174 | event.type(), |
| 175 | event.newValue().map(v -> v.map(serializer::decode)), |
| 176 | event.oldValue().map(v -> v.map(serializer::decode)))); |
| 177 | } |
| 178 | } |
| 179 | } |