| /* |
| * 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.iotdb.tsfile.utils; |
| |
| import org.apache.iotdb.tsfile.common.constant.TsFileConstant; |
| |
| import java.io.File; |
| |
| public class FilePathUtils { |
| |
| private static final String LOCAL_PATH_SPLIT_STRING = "\\".equals(File.separator) ? "\\\\" : "/"; |
| public static final String FILE_NAME_SEPARATOR = "-"; |
| |
| private FilePathUtils() { |
| // forbidding instantiation |
| } |
| |
| /** |
| * Format file path to end with File.separator |
| * |
| * @param filePath origin file path |
| * @return Regularized Path |
| */ |
| public static String regularizePath(String filePath) { |
| if (filePath.length() > 0 && filePath.charAt(filePath.length() - 1) != File.separatorChar) { |
| filePath = filePath + File.separatorChar; |
| } |
| return filePath; |
| } |
| |
| /** |
| * IMPORTANT, when the path of TsFile changes, the following methods should be changed |
| * accordingly. The sequence TsFile is located at ${IOTDB_DATA_DIR}/data/sequence/. The unsequence |
| * TsFile is located at ${IOTDB_DATA_DIR}/data/unsequence/. Where different database's TsFile is |
| * located at <logicalStorageGroupName>/<virtualStorageGroupName>/<timePartitionId>/<fileName>. |
| * For example, one sequence TsFile may locate at |
| * /data/data/sequence/root.group_9/0/0/1611199237113-4-0.tsfile |
| * |
| * @param tsFileAbsolutePath the tsFile Absolute Path |
| */ |
| public static String[] splitTsFilePath(String tsFileAbsolutePath) { |
| String separator = LOCAL_PATH_SPLIT_STRING; |
| if (!FSUtils.isLocal(tsFileAbsolutePath)) { |
| separator = "/"; |
| } |
| return tsFileAbsolutePath.split(separator); |
| } |
| |
| public static boolean isSequence(String tsFileAbsolutePath) { |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| // If path is not a regular IoTDB TsFile path, then process it as an unsequence file |
| if (pathSegments.length < 5) { |
| return false; |
| } |
| return pathSegments[pathSegments.length - 5].equals("sequence"); |
| } |
| |
| public static String getLogicalStorageGroupName(String tsFileAbsolutePath) { |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| return pathSegments[pathSegments.length - 4]; |
| } |
| |
| public static String getDataRegionId(String tsFileAbsolutePath) { |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| return pathSegments[pathSegments.length - 3]; |
| } |
| |
| public static long getTimePartitionId(String tsFileAbsolutePath) { |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| return Long.parseLong(pathSegments[pathSegments.length - 2]); |
| } |
| |
| /** |
| * @param tsFileAbsolutePath the Remote TsFile Absolute Path |
| * @return the file in the snapshot is a hardlink, remove the hardlink suffix |
| */ |
| public static String getTsFileNameWithoutHardLink(String tsFileAbsolutePath) { |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| return pathSegments[pathSegments.length - 1].substring( |
| 0, pathSegments[pathSegments.length - 1].lastIndexOf(TsFileConstant.PATH_SEPARATOR)); |
| } |
| |
| public static String getTsFilePrefixPath(String tsFileAbsolutePath) { |
| if (tsFileAbsolutePath == null) { |
| return null; |
| } |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| int pathLength = pathSegments.length; |
| return pathSegments[pathLength - 4] |
| + File.separator |
| + pathSegments[pathLength - 3] |
| + File.separator |
| + pathSegments[pathLength - 2]; |
| } |
| |
| public static long splitAndGetTsFileVersion(String tsFileName) { |
| String[] names = tsFileName.split(FILE_NAME_SEPARATOR); |
| if (names.length != 4) { |
| return 0; |
| } |
| return Long.parseLong(names[1]); |
| } |
| |
| public static Pair<String, Long> getLogicalSgNameAndTimePartitionIdPair( |
| String tsFileAbsolutePath) { |
| String[] pathSegments = splitTsFilePath(tsFileAbsolutePath); |
| return new Pair<>( |
| pathSegments[pathSegments.length - 4], |
| Long.parseLong(pathSegments[pathSegments.length - 2])); |
| } |
| } |