| /* |
| * 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.index.lucene.directory; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.commons.io.FileUtils; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| import static org.apache.jackrabbit.oak.plugins.index.lucene.directory.IndexRootDirectory.INDEX_METADATA_FILE_NAME; |
| |
| public final class LocalIndexDir implements Comparable<LocalIndexDir> { |
| final File dir; |
| final IndexMeta indexMeta; |
| |
| public LocalIndexDir(File dir) throws IOException { |
| this.dir = dir.getCanonicalFile(); |
| File indexDetails = new File(dir, IndexRootDirectory.INDEX_METADATA_FILE_NAME); |
| checkState(isIndexDir(dir), "No file [%s] found in dir [%s]", |
| INDEX_METADATA_FILE_NAME, dir.getAbsolutePath()); |
| this.indexMeta = new IndexMeta(indexDetails); |
| } |
| |
| public long size() { |
| return FileUtils.sizeOfDirectory(dir); |
| } |
| |
| public boolean isEmpty() { |
| String[] listing = dir.list(); |
| |
| //If some IO error occurs listing would be null |
| //In such a case better to return false |
| if (listing == null) { |
| return false; |
| } |
| |
| //If the dir only has the meta file then it would be |
| //considered as empty |
| return listing.length == 1; |
| } |
| |
| public String getJcrPath() { |
| return indexMeta.indexPath; |
| } |
| |
| public String getFSPath() { |
| return dir.getAbsolutePath(); |
| } |
| |
| @Override |
| public int compareTo(LocalIndexDir o) { |
| return indexMeta.compareTo(o.indexMeta); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("%s (%s)", dir.getAbsolutePath(), indexMeta); |
| } |
| |
| static boolean isIndexDir(File file){ |
| File indexDetails = new File(file, IndexRootDirectory.INDEX_METADATA_FILE_NAME); |
| return indexDetails.exists(); |
| } |
| } |