| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.workflow.impl; |
| |
| import com.fasterxml.jackson.databind.node.JsonNodeFactory; |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| import org.onosproject.store.service.EventuallyConsistentMap; |
| import org.onosproject.store.service.WallClockTimestamp; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.AsyncDocumentTree; |
| import org.onosproject.store.service.DocumentPath; |
| import org.onosproject.store.service.IllegalDocumentModificationException; |
| import org.onosproject.store.service.NoSuchDocumentPathException; |
| import org.onosproject.store.service.Ordering; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.onosproject.store.service.Versioned; |
| import org.onosproject.workflow.api.ContextEventMapStore; |
| import org.onosproject.workflow.api.WorkflowException; |
| import org.slf4j.Logger; |
| |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| @Component(immediate = true, service = ContextEventMapStore.class) |
| public class DistributedContextEventMapTreeStore implements ContextEventMapStore { |
| |
| protected static final Logger log = getLogger(DistributedContextEventMapTreeStore.class); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private StorageService storageService; |
| |
| private ApplicationId appId; |
| |
| private AsyncDocumentTree<String> eventMapTree; |
| |
| private EventuallyConsistentMap<String, Set<String>> hintSetPerCxtMap; |
| |
| |
| @Activate |
| public void activate() { |
| |
| appId = coreService.registerApplication("org.onosproject.contexteventmapstore"); |
| log.info("appId=" + appId); |
| |
| KryoNamespace eventMapNamespace = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .build(); |
| |
| eventMapTree = storageService.<String>documentTreeBuilder() |
| .withSerializer(Serializer.using(eventMapNamespace)) |
| .withName("context-event-map-store") |
| .withOrdering(Ordering.INSERTION) |
| .buildDocumentTree(); |
| |
| hintSetPerCxtMap = storageService.<String, Set<String>>eventuallyConsistentMapBuilder() |
| .withName("workflow-event-hint-per-cxt") |
| .withSerializer(eventMapNamespace) |
| .withTimestampProvider((k, v) -> new WallClockTimestamp()) |
| .build(); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| eventMapTree.destroy(); |
| hintSetPerCxtMap.destroy(); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void registerEventMap(String eventType, Set<String> eventHintSet, |
| String contextName, String programCounterString) throws WorkflowException { |
| for (String eventHint : eventHintSet) { |
| //Insert in eventCxtPerHintMap |
| DocumentPath dpathForCxt = DocumentPath.from(Lists.newArrayList( |
| "root", eventType, eventHint, contextName)); |
| String currentWorkletType = completeVersioned(eventMapTree.get(dpathForCxt)); |
| if (currentWorkletType == null) { |
| complete(eventMapTree.createRecursive(dpathForCxt, programCounterString)); |
| } else { |
| complete(eventMapTree.replace(dpathForCxt, programCounterString, currentWorkletType)); |
| } |
| log.trace("RegisterEventMap for eventType:{}, eventSet:{}, contextName:{}, pc:{}", |
| eventType, eventHintSet, contextName, programCounterString); |
| |
| } |
| hintSetPerCxtMap.put(contextName, eventHintSet); |
| log.trace("RegisterEventMap in hintSetPerCxt for " + |
| "eventType:{}, eventSet:{}, contextName:{}, pc:{}", |
| eventType, eventHintSet, contextName, programCounterString); |
| } |
| |
| @Override |
| public void unregisterEventMap(String eventType, String contextName) |
| throws WorkflowException { |
| |
| Set<String> hints = hintSetPerCxtMap.get(contextName); |
| for (String eventHint : hints) { |
| //Remove from eventCxtPerHintMap |
| complete(eventMapTree.removeNode(DocumentPath.from(Lists.newArrayList( |
| "root", eventType, eventHint, contextName)))); |
| log.trace("UnregisterEventMap from eventCxtPerHintMap for eventType:{}, eventSet:{}, contextName:{}", |
| eventType, eventHint, contextName); |
| } |
| hintSetPerCxtMap.remove(contextName); |
| } |
| |
| |
| @Override |
| public Map<String, String> getEventMapByHint(String eventType, String eventHint) throws WorkflowException { |
| DocumentPath path = DocumentPath.from( |
| Lists.newArrayList("root", eventType, eventHint)); |
| Map<String, Versioned<String>> contexts = complete(eventMapTree.getChildren(path)); |
| Map<String, String> eventMap = Maps.newHashMap(); |
| if (Objects.isNull(contexts)) { |
| return eventMap; |
| } |
| |
| for (Map.Entry<String, Versioned<String>> entry : contexts.entrySet()) { |
| eventMap.put(entry.getKey(), entry.getValue().value()); |
| } |
| log.trace("getEventMapByHint returns eventMap {} ", eventMap); |
| return eventMap; |
| } |
| |
| @Override |
| public boolean isEventMapPresent(String contextName) { |
| Map<String, String> eventMap = Maps.newHashMap(); |
| Set<String> eventHintSet = hintSetPerCxtMap.get(contextName); |
| if (Objects.nonNull(eventHintSet)) { |
| log.trace("EventMap present for Context:{}", contextName); |
| return true; |
| } else { |
| log.trace("EventMap Doesnt exist for Context:{}", contextName); |
| return false; |
| } |
| } |
| |
| |
| @Override |
| public Map<String, Versioned<String>> getChildren(String path) throws WorkflowException { |
| DocumentPath dpath = DocumentPath.from(path); |
| Map<String, Versioned<String>> entries = complete(eventMapTree.getChildren(dpath)); |
| return entries; |
| } |
| |
| @Override |
| public DocumentPath getDocumentPath(String path) throws WorkflowException { |
| DocumentPath dpath = DocumentPath.from(path); |
| return dpath; |
| } |
| |
| @Override |
| public ObjectNode asJsonTree() throws WorkflowException { |
| |
| DocumentPath rootPath = DocumentPath.from(Lists.newArrayList("root")); |
| Map<String, Versioned<String>> eventmap = complete(eventMapTree.getChildren(rootPath)); |
| |
| ObjectNode rootNode = JsonNodeFactory.instance.objectNode(); |
| |
| for (Map.Entry<String, Versioned<String>> eventTypeEntry : eventmap.entrySet()) { |
| |
| String eventType = eventTypeEntry.getKey(); |
| |
| ObjectNode eventTypeNode = JsonNodeFactory.instance.objectNode(); |
| rootNode.put(eventType, eventTypeNode); |
| |
| DocumentPath eventTypePath = DocumentPath.from(Lists.newArrayList("root", eventType)); |
| Map<String, Versioned<String>> hintmap = complete(eventMapTree.getChildren(eventTypePath)); |
| |
| for (Map.Entry<String, Versioned<String>> hintEntry : hintmap.entrySet()) { |
| |
| String hint = hintEntry.getKey(); |
| |
| ObjectNode hintNode = JsonNodeFactory.instance.objectNode(); |
| eventTypeNode.put(hint, hintNode); |
| |
| DocumentPath hintPath = DocumentPath.from(Lists.newArrayList("root", eventType, hint)); |
| Map<String, Versioned<String>> contextmap = complete(eventMapTree.getChildren(hintPath)); |
| |
| for (Map.Entry<String, Versioned<String>> ctxtEntry : contextmap.entrySet()) { |
| hintNode.put(ctxtEntry.getKey(), ctxtEntry.getValue().value()); |
| } |
| } |
| } |
| |
| return rootNode; |
| } |
| |
| private <T> T complete(CompletableFuture<T> future) throws WorkflowException { |
| try { |
| return future.get(); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new WorkflowException(e.getCause().getMessage()); |
| } catch (ExecutionException e) { |
| if (e.getCause() instanceof IllegalDocumentModificationException) { |
| throw new WorkflowException("Node or parent does not exist or is root or is not a Leaf Node", |
| e.getCause()); |
| } else if (e.getCause() instanceof NoSuchDocumentPathException) { |
| return null; |
| } else { |
| throw new WorkflowException("Datastore operation failed", e.getCause()); |
| } |
| } |
| } |
| |
| private <T> T completeVersioned(CompletableFuture<Versioned<T>> future) throws WorkflowException { |
| return Optional.ofNullable(complete(future)) |
| .map(Versioned::value) |
| .orElse(null); |
| } |
| } |