| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.jackrabbit.oak.composite; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import com.google.common.collect.ArrayListMultimap; |
| import com.google.common.collect.Multimap; |
| import org.apache.jackrabbit.oak.api.CommitFailedException; |
| import org.apache.jackrabbit.oak.api.PropertyState; |
| import org.apache.jackrabbit.oak.api.Type; |
| import org.apache.jackrabbit.oak.plugins.index.property.Multiplexers; |
| import org.apache.jackrabbit.oak.plugins.index.property.strategy.IndexStoreStrategy; |
| import org.apache.jackrabbit.oak.spi.commit.DefaultValidator; |
| import org.apache.jackrabbit.oak.spi.commit.Validator; |
| import org.apache.jackrabbit.oak.spi.mount.Mount; |
| import org.apache.jackrabbit.oak.spi.mount.MountInfoProvider; |
| import org.apache.jackrabbit.oak.spi.query.Filter; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static com.google.common.collect.ImmutableSet.of; |
| import static com.google.common.collect.Maps.newHashMap; |
| import static org.apache.jackrabbit.JcrConstants.JCR_UUID; |
| import static org.apache.jackrabbit.oak.api.CommitFailedException.INTEGRITY; |
| import static org.apache.jackrabbit.oak.commons.PathUtils.concat; |
| import static org.apache.jackrabbit.oak.plugins.index.IndexConstants.INDEX_CONTENT_NODE_NAME; |
| import static org.apache.jackrabbit.oak.plugins.index.IndexConstants.INDEX_DEFINITIONS_NAME; |
| |
| public class CrossMountReferenceValidator extends DefaultValidator { |
| |
| private final Logger LOG = LoggerFactory.getLogger(CrossMountReferenceValidator.class); |
| |
| /** Parent editor, or {@code null} if this is the root editor. */ |
| private final CrossMountReferenceValidator parent; |
| |
| /** Name of this node, or {@code null} for the root node. */ |
| private final String name; |
| |
| /** Path of this editor, built lazily in {@link #getPath()}. */ |
| private String path; |
| |
| /** UUID -> referencable node path */ |
| private final Map<String, String> newReferencableNodes; |
| |
| /** UUID -> referencing node */ |
| private final Multimap<String, String> newReferences; |
| |
| private final MountInfoProvider mip; |
| |
| private final NodeState uuidDefinition; |
| |
| private final Set<IndexStoreStrategy> uuidStores; |
| |
| private final boolean failOnDetection; |
| |
| private CrossMountReferenceValidator(CrossMountReferenceValidator parent, String name) { |
| this.name = name; |
| this.parent = parent; |
| this.path = null; |
| this.mip = parent.mip; |
| this.newReferencableNodes = parent.newReferencableNodes; |
| this.newReferences = parent.newReferences; |
| this.uuidDefinition = parent.uuidDefinition; |
| this.uuidStores = parent.uuidStores; |
| this.failOnDetection = parent.failOnDetection; |
| } |
| |
| public CrossMountReferenceValidator(NodeState root, MountInfoProvider mip, boolean failOnDetection) { |
| this.name = null; |
| this.parent = null; |
| this.path = "/"; |
| this.mip = mip; |
| this.newReferencableNodes = newHashMap(); |
| this.newReferences = ArrayListMultimap.create(); |
| this.uuidDefinition = root.getChildNode(INDEX_DEFINITIONS_NAME).getChildNode("uuid"); |
| this.uuidStores = Multiplexers.getStrategies(true, mip, uuidDefinition, INDEX_CONTENT_NODE_NAME); |
| this.failOnDetection = failOnDetection; |
| } |
| |
| @Override |
| public void enter(NodeState before, NodeState after) |
| throws CommitFailedException { |
| } |
| |
| @Override |
| public void leave(NodeState before, NodeState after) |
| throws CommitFailedException { |
| if (parent != null) { |
| return; |
| } |
| for (Map.Entry<String, Collection<String>> e : newReferences.asMap().entrySet()) { |
| String uuid = e.getKey(); |
| String passivePath = getPathByUuid(uuid); |
| if (passivePath == null) { |
| LOG.warn("Can't find path for the UUID {}", uuid); |
| } |
| Mount m1 = mip.getMountByPath(passivePath); |
| |
| for (String activePath : e.getValue()) { |
| Mount m2 = mip.getMountByPath(activePath); |
| if (!m1.equals(m2)) { |
| if (failOnDetection) { |
| throw new CommitFailedException(INTEGRITY, 1, |
| "Unable to reference the node [" + passivePath + "] from node [" + activePath + "]. Referencing across the mounts is not allowed."); |
| } else { |
| LOG.warn("Detected a cross-mount reference: {} -> {}", activePath, passivePath); |
| } |
| } |
| } |
| } |
| } |
| |
| private String getPathByUuid(String uuid) { |
| if (newReferencableNodes.containsKey(uuid)) { |
| return newReferencableNodes.get(uuid); |
| } |
| for (IndexStoreStrategy store : uuidStores) { |
| for (String path : store.query(Filter.EMPTY_FILTER, null, uuidDefinition, of(uuid))) { |
| return path; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void propertyAdded(PropertyState after) |
| throws CommitFailedException { |
| checkProperty(after); |
| } |
| |
| @Override |
| public void propertyChanged(PropertyState before, PropertyState after) |
| throws CommitFailedException { |
| checkProperty(after); |
| } |
| |
| private void checkProperty(PropertyState property) { |
| Type<?> type = property.getType(); |
| if (type == Type.REFERENCE) { |
| newReferences.put(property.getValue(Type.REFERENCE), getPath()); |
| } else if (type == Type.REFERENCES) { |
| for (String r : property.getValue(Type.REFERENCES)) { |
| newReferences.put(r, getPath()); |
| } |
| } else if (type == Type.STRING && JCR_UUID.equals(property.getName())) { |
| newReferencableNodes.put(property.getValue(Type.STRING), getPath()); |
| } |
| } |
| |
| @Override |
| public Validator childNodeAdded(String name, NodeState after) |
| throws CommitFailedException { |
| return new CrossMountReferenceValidator(this, name); |
| } |
| |
| @Override |
| public Validator childNodeChanged( |
| String name, NodeState before, NodeState after) |
| throws CommitFailedException { |
| return new CrossMountReferenceValidator(this, name); |
| } |
| |
| /** |
| * Returns the path of this node, building it lazily when first requested. |
| */ |
| private String getPath() { |
| if (path == null) { |
| path = concat(parent.getPath(), name); |
| } |
| return path; |
| } |
| |
| } |