| /* |
| * 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.document.rdb; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.jackrabbit.oak.plugins.document.Collection; |
| import org.apache.jackrabbit.oak.plugins.document.MissingLastRevSeeker; |
| import org.apache.jackrabbit.oak.plugins.document.NodeDocument; |
| import org.apache.jackrabbit.oak.plugins.document.rdb.RDBDocumentStore.QueryCondition; |
| import org.apache.jackrabbit.oak.plugins.document.util.SystemPropertySupplier; |
| import org.apache.jackrabbit.oak.stats.Clock; |
| import org.jetbrains.annotations.NotNull; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * RDB specific version of MissingLastRevSeeker. |
| */ |
| public class RDBMissingLastRevSeeker extends MissingLastRevSeeker { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(RDBMissingLastRevSeeker.class); |
| |
| // 1: seek using historical, paging mode |
| // 2: use custom single query directly using RDBDocumentStore API |
| private static final int DEFAULTMODE = 2; |
| |
| private static final int MODE = SystemPropertySupplier.create(RDBMissingLastRevSeeker.class.getName() + ".MODE", DEFAULTMODE) |
| .loggingTo(LOG).validateWith(value -> (value == 1 || value == 2)).formatSetMessage((name, value) -> { |
| return String.format("Strategy for %s set to %s (via system property %s)", RDBMissingLastRevSeeker.class.getName(), |
| name, value); |
| }).get(); |
| |
| private final RDBDocumentStore store; |
| |
| public RDBMissingLastRevSeeker(RDBDocumentStore store, Clock clock) { |
| super(store, clock); |
| this.store = store; |
| } |
| |
| @Override |
| @NotNull |
| public Iterable<NodeDocument> getCandidates(final long startTime) { |
| LOG.debug("Running getCandidates() in mode " + MODE); |
| if (MODE == 1) { |
| return super.getCandidates(startTime); |
| } else { |
| List<QueryCondition> conditions = new ArrayList<>(); |
| conditions.add(new QueryCondition(NodeDocument.MODIFIED_IN_SECS, ">=", NodeDocument.getModifiedInSecs(startTime))); |
| conditions.add(new QueryCondition(NodeDocument.SD_TYPE, "is null")); |
| return store.queryAsIterable(Collection.NODES, null, null, RDBDocumentStore.EMPTY_KEY_PATTERN, conditions, |
| Integer.MAX_VALUE, null); |
| } |
| } |
| } |