| /* |
| * 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.db.storageengine.dataregion.compaction.tool; |
| |
| import org.apache.iotdb.tsfile.file.metadata.ChunkMetadata; |
| import org.apache.iotdb.tsfile.file.metadata.IDeviceID; |
| import org.apache.iotdb.tsfile.read.TsFileDeviceIterator; |
| import org.apache.iotdb.tsfile.read.TsFileSequenceReader; |
| import org.apache.iotdb.tsfile.utils.Pair; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class TsFileStatisticReader implements Closeable { |
| |
| private final TsFileSequenceReader reader; |
| |
| public TsFileStatisticReader(String filePath) throws IOException { |
| reader = new TsFileSequenceReader(filePath); |
| } |
| |
| public List<ChunkGroupStatistics> getChunkGroupStatisticsList() throws IOException { |
| TsFileDeviceIterator allDevicesIteratorWithIsAligned = |
| reader.getAllDevicesIteratorWithIsAligned(); |
| List<ChunkGroupStatistics> chunkGroupStatisticsList = new ArrayList<>(); |
| while (allDevicesIteratorWithIsAligned.hasNext()) { |
| Pair<IDeviceID, Boolean> deviceWithIsAligned = allDevicesIteratorWithIsAligned.next(); |
| IDeviceID deviceId = deviceWithIsAligned.left; |
| |
| ChunkGroupStatistics chunkGroupStatistics = new ChunkGroupStatistics(deviceId); |
| Iterator<Map<String, List<ChunkMetadata>>> measurementChunkMetadataListMapIterator = |
| reader.getMeasurementChunkMetadataListMapIterator(deviceId); |
| |
| while (measurementChunkMetadataListMapIterator.hasNext()) { |
| Map<String, List<ChunkMetadata>> measurementChunkMetadataListMap = |
| measurementChunkMetadataListMapIterator.next(); |
| for (Map.Entry<String, List<ChunkMetadata>> measurementChunkMetadataList : |
| measurementChunkMetadataListMap.entrySet()) { |
| List<ChunkMetadata> chunkMetadataList = measurementChunkMetadataList.getValue(); |
| chunkGroupStatistics.chunkMetadataList.addAll(chunkMetadataList); |
| chunkGroupStatistics.totalChunkNum += chunkMetadataList.size(); |
| } |
| } |
| chunkGroupStatisticsList.add(chunkGroupStatistics); |
| } |
| return chunkGroupStatisticsList; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| this.reader.close(); |
| } |
| |
| public static class ChunkGroupStatistics { |
| private final IDeviceID deviceID; |
| private final List<ChunkMetadata> chunkMetadataList; |
| private int totalChunkNum = 0; |
| |
| private ChunkGroupStatistics(IDeviceID deviceId) { |
| this.deviceID = deviceId; |
| this.chunkMetadataList = new ArrayList<>(); |
| } |
| |
| public IDeviceID getDeviceID() { |
| return deviceID; |
| } |
| |
| public List<ChunkMetadata> getChunkMetadataList() { |
| return chunkMetadataList; |
| } |
| |
| public int getTotalChunkNum() { |
| return totalChunkNum; |
| } |
| } |
| } |