| /* |
| * 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.plugins.version; |
| |
| import org.apache.jackrabbit.oak.api.CommitFailedException; |
| import org.apache.jackrabbit.oak.api.PropertyState; |
| import org.apache.jackrabbit.oak.spi.commit.DefaultEditor; |
| import org.apache.jackrabbit.oak.spi.commit.Editor; |
| import org.apache.jackrabbit.oak.spi.state.DefaultNodeStateDiff; |
| import org.apache.jackrabbit.oak.spi.state.NodeBuilder; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.jetbrains.annotations.NotNull; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.apache.jackrabbit.JcrConstants.JCR_PRIMARYTYPE; |
| import static org.apache.jackrabbit.JcrConstants.JCR_VERSIONLABELS; |
| import static org.apache.jackrabbit.oak.commons.PathUtils.concat; |
| import static org.apache.jackrabbit.oak.commons.PathUtils.getDepth; |
| import static org.apache.jackrabbit.oak.commons.PathUtils.relativize; |
| import static org.apache.jackrabbit.oak.spi.state.AbstractNodeState.comparePropertiesAgainstBaseState; |
| import static org.apache.jackrabbit.oak.spi.version.VersionConstants.VERSION_NODE_TYPE_NAMES; |
| import static org.apache.jackrabbit.oak.spi.version.VersionConstants.VERSION_STORE_INIT; |
| import static org.apache.jackrabbit.oak.spi.version.VersionConstants.VERSION_STORE_NT_NAMES; |
| import static org.apache.jackrabbit.oak.spi.version.VersionConstants.VERSION_STORE_PATH; |
| |
| /** |
| * Validates changes on the version store. |
| */ |
| class VersionStorageEditor extends DefaultEditor { |
| |
| private static final int VERSION_HISTORY_DEPTH = 6; |
| |
| private final NodeBuilder versionStorageNode; |
| private final NodeBuilder workspaceRoot; |
| private final NodeBuilder builder; |
| private final String path; |
| private boolean initPhase; |
| private ReadWriteVersionManager vMgr; |
| |
| VersionStorageEditor(@NotNull NodeBuilder versionStorageNode, |
| @NotNull NodeBuilder workspaceRoot) { |
| this(versionStorageNode, workspaceRoot, versionStorageNode, |
| VERSION_STORE_PATH, false); |
| } |
| |
| private VersionStorageEditor(@NotNull NodeBuilder versionStorageNode, |
| @NotNull NodeBuilder workspaceRoot, |
| @NotNull NodeBuilder builder, |
| @NotNull String path, |
| boolean initPhase) { |
| this.versionStorageNode = checkNotNull(versionStorageNode); |
| this.workspaceRoot = checkNotNull(workspaceRoot); |
| this.builder = checkNotNull(builder); |
| this.path = checkNotNull(path); |
| this.initPhase = initPhase; |
| } |
| |
| @Override |
| public void enter(NodeState before, NodeState after) { |
| if (VERSION_STORE_PATH.equals(path)) { |
| initPhase = isInitializationPhase(before, after); |
| } |
| } |
| |
| @Override |
| public Editor childNodeChanged(String name, |
| NodeState before, |
| NodeState after) |
| throws CommitFailedException { |
| int d = getDepth(path); |
| String p = concat(path, name); |
| if (d == VERSION_HISTORY_DEPTH |
| && name.equals(JCR_VERSIONLABELS)) { |
| return new VersionLabelsEditor(p, getVersionManager()); |
| } |
| if (d < VERSION_HISTORY_DEPTH && !isVersionStorageNode(after)) { |
| return null; |
| } |
| return new VersionStorageEditor(versionStorageNode, workspaceRoot, builder.child(name), p, initPhase); |
| } |
| |
| @Override |
| public Editor childNodeAdded(String name, NodeState after) |
| throws CommitFailedException { |
| int d = getDepth(path); |
| // allow child nodes under version storage node, unless an attempt |
| // is made to create rep:versionStorage nodes manually. |
| if (d == getDepth(VERSION_STORE_PATH) && |
| !isVersionStorageNode(after)) { |
| return null; |
| } |
| // allow node addition during initialization phase |
| if (initPhase) { |
| return null; |
| } |
| return throwProtected(name); |
| } |
| |
| @Override |
| public Editor childNodeDeleted(String name, NodeState before) |
| throws CommitFailedException { |
| int d = getDepth(path); |
| if (d == VERSION_HISTORY_DEPTH) { |
| // restore version on builder |
| builder.setChildNode(name, before); |
| String relPath = relativize(VERSION_STORE_PATH, concat(path, name)); |
| // let version manager remove it properly |
| getVersionManager().removeVersion(relPath); |
| return null; |
| } else if (isVersionStorageNode(before) || d > VERSION_HISTORY_DEPTH) { |
| throwProtected(name); |
| } |
| return null; |
| } |
| |
| @Override |
| public void propertyAdded(PropertyState after) |
| throws CommitFailedException { |
| if (getDepth(path) < VERSION_HISTORY_DEPTH) { |
| return; |
| } |
| throwProtected(after.getName()); |
| } |
| |
| @Override |
| public void propertyChanged(PropertyState before, PropertyState after) |
| throws CommitFailedException { |
| if (getDepth(path) < VERSION_HISTORY_DEPTH) { |
| return; |
| } |
| throwProtected(before.getName()); |
| } |
| |
| @Override |
| public void propertyDeleted(PropertyState before) |
| throws CommitFailedException { |
| if (getDepth(path) < VERSION_HISTORY_DEPTH) { |
| return; |
| } |
| throwProtected(before.getName()); |
| } |
| |
| //-------------------------< internal >------------------------------------- |
| |
| private static boolean isVersionStorageNode(NodeState state) { |
| String ntName = state.getName(JCR_PRIMARYTYPE); |
| return VERSION_STORE_NT_NAMES.contains(ntName) |
| || VERSION_NODE_TYPE_NAMES.contains(ntName); |
| } |
| |
| private ReadWriteVersionManager getVersionManager() { |
| if (vMgr == null) { |
| vMgr = new ReadWriteVersionManager(versionStorageNode, workspaceRoot); |
| } |
| return vMgr; |
| } |
| |
| private Editor throwProtected(String name) throws CommitFailedException { |
| return Utils.throwProtected(concat(path, name)); |
| } |
| |
| private static boolean isInitializationPhase(NodeState before, NodeState after) { |
| return !comparePropertiesAgainstBaseState(after, before, new DefaultNodeStateDiff() { |
| @Override |
| public boolean propertyAdded(PropertyState after) { |
| return !after.getName().equals(VERSION_STORE_INIT); |
| } |
| }); |
| } |
| } |