Sithara Punnassery | 9306e6b | 2017-02-06 15:38:19 -0800 | [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.config.impl; |
| 17 | |
Sithara Punnassery | 0620879 | 2017-02-10 16:25:29 -0800 | [diff] [blame] | 18 | import com.google.common.annotations.Beta; |
Sithara Punnassery | 9306e6b | 2017-02-06 15:38:19 -0800 | [diff] [blame] | 19 | import org.apache.felix.scr.annotations.Activate; |
| 20 | import org.apache.felix.scr.annotations.Component; |
| 21 | import org.apache.felix.scr.annotations.Deactivate; |
| 22 | import org.apache.felix.scr.annotations.Reference; |
| 23 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 24 | import org.apache.felix.scr.annotations.Service; |
| 25 | import org.onlab.util.KryoNamespace; |
| 26 | import org.onosproject.config.DynamicConfigEvent; |
| 27 | import org.onosproject.config.DynamicConfigStore; |
| 28 | import org.onosproject.config.DynamicConfigStoreDelegate; |
| 29 | import org.onosproject.config.FailedException; |
| 30 | import org.onosproject.config.Filter; |
| 31 | import org.onosproject.config.model.DataNode; |
| 32 | import org.onosproject.config.model.InnerNode; |
| 33 | import org.onosproject.config.model.LeafNode; |
| 34 | import org.onosproject.config.model.NodeKey; |
| 35 | import org.onosproject.config.model.ResourceId; |
| 36 | import org.onosproject.config.model.SchemaId; |
| 37 | import org.onosproject.store.AbstractStore; |
| 38 | import org.onosproject.store.serializers.KryoNamespaces; |
| 39 | import org.onosproject.store.service.AsyncDocumentTree; |
| 40 | import org.onosproject.store.service.ConsistentMap; |
| 41 | import org.onosproject.store.service.DocumentPath; |
| 42 | import org.onosproject.store.service.DocumentTreeEvent; |
| 43 | import org.onosproject.store.service.DocumentTreeListener; |
| 44 | import org.onosproject.store.service.MapEvent; |
| 45 | import org.onosproject.store.service.MapEventListener; |
| 46 | import org.onosproject.store.service.Serializer; |
| 47 | import org.onosproject.store.service.StorageService; |
| 48 | import org.onosproject.store.service.Versioned; |
| 49 | import org.slf4j.Logger; |
| 50 | import org.slf4j.LoggerFactory; |
| 51 | |
| 52 | import java.util.Map; |
| 53 | import java.util.concurrent.CompletableFuture; |
| 54 | |
| 55 | /** |
| 56 | * Implementation of the dynamic config store. |
| 57 | */ |
Sithara Punnassery | 0620879 | 2017-02-10 16:25:29 -0800 | [diff] [blame] | 58 | @Beta |
Sithara Punnassery | 9306e6b | 2017-02-06 15:38:19 -0800 | [diff] [blame] | 59 | @Component(immediate = true) |
| 60 | @Service |
| 61 | public class DistributedDynamicConfigStore |
| 62 | extends AbstractStore<DynamicConfigEvent, DynamicConfigStoreDelegate> |
| 63 | implements DynamicConfigStore { |
| 64 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 65 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 66 | protected StorageService storageService; |
| 67 | private AsyncDocumentTree<DataNode.Type> keystore; |
| 68 | private ConsistentMap<ResourceId, LeafNode> objectStore; |
| 69 | private final DocumentTreeListener<DataNode.Type> klistener = new InternalDocTreeListener(); |
| 70 | private final MapEventListener<ResourceId, LeafNode> olistener = new InternalMapListener(); |
| 71 | |
| 72 | @Activate |
| 73 | public void activateStore() { |
| 74 | KryoNamespace.Builder kryoBuilder = new KryoNamespace.Builder() |
| 75 | .register(KryoNamespaces.BASIC) |
| 76 | .register(String.class) |
| 77 | .register(java.lang.Class.class) |
| 78 | .register(DataNode.Type.class) |
| 79 | .register(LeafNode.class) |
| 80 | .register(InnerNode.class) |
| 81 | .register(ResourceId.class) |
| 82 | .register(NodeKey.class) |
| 83 | .register(SchemaId.class) |
| 84 | .register(java.util.LinkedHashMap.class); |
| 85 | keystore = storageService.<DataNode.Type>documentTreeBuilder() |
| 86 | .withSerializer(Serializer.using(kryoBuilder.build())) |
| 87 | .withName("config-key-store") |
| 88 | .withRelaxedReadConsistency() |
| 89 | .buildDocumentTree(); |
| 90 | objectStore = storageService.<ResourceId, LeafNode>consistentMapBuilder() |
| 91 | .withSerializer(Serializer.using(kryoBuilder.build())) |
| 92 | .withName("config-object-store") |
| 93 | .withRelaxedReadConsistency() |
| 94 | .build(); |
| 95 | keystore.addListener(klistener); |
| 96 | objectStore.addListener(olistener); |
| 97 | log.info("DyanmicConfig Store Active"); |
| 98 | } |
| 99 | |
| 100 | @Deactivate |
| 101 | public void deactivateStore() { |
| 102 | keystore.removeListener(klistener); |
| 103 | objectStore.removeListener(olistener); |
| 104 | log.info("DyanmicConfig Store Stopped"); |
| 105 | } |
| 106 | |
| 107 | @Override |
| 108 | public CompletableFuture<Boolean> |
| 109 | addNode(ResourceId path, DataNode node) { |
| 110 | CompletableFuture<Boolean> eventFuture = CompletableFuture.completedFuture(false); |
| 111 | Boolean stat = false; |
| 112 | DocumentPath dpath = DocumentPath.from(path.asString()); |
| 113 | log.info("STORE: dpath to parent {}", dpath); |
| 114 | if (keystore.get(dpath).join() == null) { |
| 115 | throw new FailedException("Some of the parents are not present in " + |
| 116 | "the requested path, please use a recursive create"); |
| 117 | } |
| 118 | ResourceId cpath = path.builder() |
| 119 | .addBranchPointSchema(node.key().schemaId().name(), |
| 120 | node.key().schemaId().namespace()).build(); |
| 121 | dpath = DocumentPath.from(cpath.asString()); |
| 122 | if (keystore.get(dpath).join() != null) { |
| 123 | throw new FailedException("Requested node already present in the" + |
| 124 | " store, please use an update method"); |
| 125 | } |
| 126 | stat = checkNode(cpath, node); |
| 127 | if (stat) { |
| 128 | eventFuture = CompletableFuture.completedFuture(true); |
| 129 | } else { |
| 130 | log.info("STORE: FAILED to create node @ {}", path); |
| 131 | } |
| 132 | return eventFuture; |
| 133 | } |
| 134 | |
| 135 | @Override |
| 136 | public CompletableFuture<DataNode> readNode(ResourceId path, Filter filter) { |
| 137 | CompletableFuture<DataNode> eventFuture = CompletableFuture.completedFuture(null); |
| 138 | DocumentPath dpath = DocumentPath.from(path.asString()); |
| 139 | DataNode.Type type; |
| 140 | type = keystore.get(dpath).join().value(); |
| 141 | if (type == null) { |
| 142 | throw new FailedException("Requested node or some of the parents" + |
| 143 | "are not present in the requested path"); |
| 144 | } |
| 145 | DataNode retVal = null; |
| 146 | //TODO handle single and multi instances differently |
| 147 | if ((type == DataNode.Type.SINGLE_INSTANCE_LEAF_VALUE_NODE) || |
| 148 | (type == DataNode.Type.MULTI_INSTANCE_LEAF_VALUE_NODE)) { |
| 149 | retVal = readLeaf(path); |
| 150 | } else { |
| 151 | int last = path.nodeKeys().size(); |
| 152 | NodeKey key = path.nodeKeys().get(last - 1); |
| 153 | DataNode.Builder superBldr = new InnerNode.Builder(key.schemaId().name(), |
| 154 | key.schemaId().namespace()).type(type); |
| 155 | readInner(superBldr, path); |
| 156 | retVal = superBldr.build(); |
| 157 | } |
| 158 | if (retVal != null) { |
| 159 | eventFuture = CompletableFuture.completedFuture(retVal); |
| 160 | } else { |
| 161 | log.info("STORE: FAILED to READ node @@@@"); |
| 162 | } |
| 163 | return eventFuture; |
| 164 | } |
| 165 | |
| 166 | @Override |
| 167 | public CompletableFuture<Boolean> |
| 168 | addRecursive(ResourceId path, DataNode node) { |
| 169 | CompletableFuture<Boolean> eventFuture = CompletableFuture.completedFuture(false); |
| 170 | Boolean stat = false; |
| 171 | DocumentPath dpath = DocumentPath.from(path.asString()); |
| 172 | //TODO need to check for each parent in the path and recursively create all missing |
| 173 | /*if (keystore.get(dpath).join() == null) { |
| 174 | //recursivley craete all missing aprents |
| 175 | }*/ |
| 176 | if (keystore.get(dpath).join() != null) { |
| 177 | throw new FailedException("Requested node already present " + |
| 178 | "in the store, please use an update method"); |
| 179 | } |
| 180 | //TODO single instance and multi instance need to be handled differently |
| 181 | if ((node.type() == DataNode.Type.SINGLE_INSTANCE_LEAF_VALUE_NODE) || |
| 182 | (node.type() == DataNode.Type.MULTI_INSTANCE_LEAF_VALUE_NODE)) { |
| 183 | stat = addLeaf(path, (LeafNode) node); |
| 184 | } else { |
| 185 | stat = (traverseInner(path, (InnerNode) node)); |
| 186 | } |
| 187 | if (stat) { |
| 188 | eventFuture = CompletableFuture.completedFuture(true); |
| 189 | } else { |
| 190 | log.info("STORE: FAILED to create node @@@@"); |
| 191 | } |
| 192 | return eventFuture; |
| 193 | } |
| 194 | @Override |
| 195 | public CompletableFuture<Boolean> updateNode(ResourceId path, DataNode node) { |
| 196 | throw new FailedException("Not yet implemented"); |
| 197 | } |
| 198 | @Override |
| 199 | public CompletableFuture<Boolean> |
| 200 | updateNodeRecursive(ResourceId path, DataNode node) { |
| 201 | throw new FailedException("Not yet implemented"); |
| 202 | } |
| 203 | @Override |
| 204 | public CompletableFuture<Boolean> |
| 205 | replaceNode(ResourceId path, DataNode node) { |
| 206 | throw new FailedException("Not yet implemented"); |
| 207 | } |
| 208 | @Override |
| 209 | public CompletableFuture<Boolean> |
| 210 | deleteNode(ResourceId path) { |
| 211 | throw new FailedException("Not yet implemented"); |
| 212 | } |
| 213 | @Override |
| 214 | public CompletableFuture<Boolean> |
| 215 | deleteNodeRecursive(ResourceId path) { |
| 216 | throw new FailedException("Not yet implemented"); |
| 217 | } |
| 218 | |
| 219 | private Boolean addLeaf(ResourceId path, LeafNode node) { |
| 220 | objectStore.put(path, node); |
| 221 | return (keystore.create(DocumentPath.from(path.asString()), node.type()).join()); |
| 222 | } |
| 223 | |
| 224 | private Boolean addKey(ResourceId path, DataNode.Type type) { |
| 225 | return (keystore.create(DocumentPath.from(path.asString()), type).join()); |
| 226 | } |
| 227 | |
| 228 | private Boolean checkNode(ResourceId path, DataNode node) { |
| 229 | //TODO single instance and multi instance need to be handled differently |
| 230 | if ((node.type() == DataNode.Type.SINGLE_INSTANCE_LEAF_VALUE_NODE) || |
| 231 | (node.type() == DataNode.Type.MULTI_INSTANCE_LEAF_VALUE_NODE)) { |
| 232 | return (addLeaf(path, (LeafNode) node)); |
| 233 | } else if ((node.type() == DataNode.Type.SINGLE_INSTANCE_NODE) || |
| 234 | (node.type() == DataNode.Type.MULTI_INSTANCE_NODE)) { |
| 235 | addKey(path, node.type()); |
| 236 | return (traverseInner(path, (InnerNode) node)); |
| 237 | } else { |
| 238 | throw new FailedException("Node type should either be LEAF or INNERNODE"); |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | private LeafNode readLeaf(ResourceId path) { |
| 243 | return objectStore.get(path).value(); |
| 244 | } |
| 245 | |
| 246 | private Boolean traverseInner(ResourceId path, InnerNode node) { |
| 247 | addKey(path, node.type()); |
| 248 | Map<NodeKey, DataNode> entries = node.childNodes(); |
| 249 | if (entries.size() == 0) { |
| 250 | throw new FailedException("Inner node cannot have empty children map"); |
| 251 | } |
| 252 | entries.forEach((k, v) -> { |
| 253 | ResourceId tempPath; |
| 254 | try { |
| 255 | tempPath = path.copyBuilder() |
| 256 | .addBranchPointSchema(k.schemaId().name(), |
| 257 | k.schemaId().namespace()) |
| 258 | .build(); |
| 259 | } catch (CloneNotSupportedException e) { |
| 260 | throw new FailedException("ResourceId could not be cloned@@@@"); |
| 261 | } |
| 262 | //TODO single instance and multi instance need to be handled differently |
| 263 | if ((v.type() == DataNode.Type.SINGLE_INSTANCE_LEAF_VALUE_NODE) || |
| 264 | (v.type() == DataNode.Type.MULTI_INSTANCE_LEAF_VALUE_NODE)) { |
| 265 | addLeaf(tempPath, (LeafNode) v); |
| 266 | } else if ((v.type() == DataNode.Type.SINGLE_INSTANCE_NODE) || |
| 267 | (v.type() == DataNode.Type.MULTI_INSTANCE_NODE)) { |
| 268 | traverseInner(tempPath, (InnerNode) v); |
| 269 | } else { |
| 270 | throw new FailedException("Node type should either be LEAF or INNERNODE"); |
| 271 | } |
| 272 | }); |
| 273 | return true; |
| 274 | } |
| 275 | |
| 276 | private void readInner(DataNode.Builder superBldr, ResourceId path) { |
| 277 | Map<String, Versioned<DataNode.Type>> entries = keystore.getChildren( |
| 278 | DocumentPath.from(path.asString())).join(); |
| 279 | if (entries.size() == 0) { |
| 280 | throw new FailedException("Inner node cannot have empty children map"); |
| 281 | } |
| 282 | entries.forEach((k, v) -> { |
| 283 | ResourceId tempPath; |
| 284 | String[] names = k.split("#"); |
| 285 | String name = names[0]; |
| 286 | String nmSpc = names[1]; |
| 287 | DataNode.Type type = v.value(); |
| 288 | try { |
| 289 | tempPath = path.copyBuilder() |
| 290 | .addBranchPointSchema(name, nmSpc) |
| 291 | .build(); |
| 292 | } catch (CloneNotSupportedException e) { |
| 293 | throw new FailedException("ResourceId could not be cloned@@@@"); |
| 294 | } |
| 295 | //TODO single instance and multi instance need to be handled differently |
| 296 | if ((type == DataNode.Type.SINGLE_INSTANCE_LEAF_VALUE_NODE) || |
| 297 | (type == DataNode.Type.MULTI_INSTANCE_LEAF_VALUE_NODE)) { |
| 298 | superBldr.createChildBuilder(name, nmSpc, readLeaf(tempPath)) |
| 299 | .type(type) |
| 300 | .exitNode(); |
| 301 | } else if ((type == DataNode.Type.SINGLE_INSTANCE_NODE) || |
| 302 | (type == DataNode.Type.MULTI_INSTANCE_NODE)) { |
| 303 | DataNode.Builder tempBldr = superBldr.createChildBuilder(name, nmSpc) |
| 304 | .type(type); |
| 305 | readInner(tempBldr, tempPath); |
| 306 | } else { |
| 307 | throw new FailedException("Node type should either be LEAF or INNERNODE"); |
| 308 | } |
| 309 | }); |
| 310 | superBldr.exitNode(); |
| 311 | } |
| 312 | |
| 313 | public class InternalDocTreeListener implements DocumentTreeListener<DataNode.Type> { |
| 314 | @Override |
| 315 | public void event(DocumentTreeEvent<DataNode.Type> event) { |
| 316 | DynamicConfigEvent.Type type; |
| 317 | DataNode node; |
| 318 | ResourceId path; |
| 319 | switch (event.type()) { |
| 320 | case CREATED: |
| 321 | log.info("key created in store"); |
| 322 | break; |
| 323 | case UPDATED: |
| 324 | log.info("key updated in store"); |
| 325 | break; |
| 326 | case DELETED: |
| 327 | log.info("key deleted in store"); |
| 328 | break; |
| 329 | |
| 330 | default: |
| 331 | } |
| 332 | //notify |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | public class InternalMapListener implements MapEventListener<ResourceId, LeafNode> { |
| 337 | @Override |
| 338 | public void event(MapEvent<ResourceId, LeafNode> event) { |
| 339 | switch (event.type()) { |
| 340 | case INSERT: |
| 341 | log.info("OBJECT created in store"); |
| 342 | break; |
| 343 | case UPDATE: |
| 344 | log.info("OBJECT updated in store"); |
| 345 | break; |
| 346 | case REMOVE: |
| 347 | default: |
| 348 | log.info("OBJECT removed in store"); |
| 349 | break; |
| 350 | } |
| 351 | //notify |
| 352 | } |
| 353 | } |
| 354 | } |