iotdb-core/tsfile/src/main/java/org/apache/iotdb/tsfile/utils/TsFileUtils.java

/*
 * 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.read.TsFileSequenceReader;

import java.io.File;
import java.io.IOException;

public class TsFileUtils {

  /**
   * decides whether a TsFile is complete (the head magic and tail magic string exists.)
   *
   * @param file given the TsFile Path
   * @throws IOException the io operations on file fails
   */
  public static boolean isTsFileComplete(File file) throws IOException {
    try (TsFileSequenceReader reader = new TsFileSequenceReader(file.getAbsolutePath(), false)) {
      return reader.isComplete();
    }
  }

  public static long getTimePartition(File tsFile) {
    File timePartitionFolder = tsFile.getParentFile();
    return Long.parseLong(timePartitionFolder.getName());
  }

  public static int getDataRegionId(File tsFile) {
    File dataRegionFolder = tsFile.getParentFile().getParentFile();
    return Integer.parseInt(dataRegionFolder.getName());
  }

  public static String getStorageGroup(File tsFile) {
    File vsgFolder = tsFile.getParentFile().getParentFile().getParentFile();
    return vsgFolder.getName();
  }

  public static boolean isSequence(File tsFile) {
    File folder = tsFile.getParentFile().getParentFile().getParentFile().getParentFile();
    return folder.getName().equals("sequence");
  }
}