| /* |
| * 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.query.reader.chunk.metadata; |
| |
| import org.apache.iotdb.db.engine.modification.Modification; |
| import org.apache.iotdb.db.engine.storagegroup.TsFileResource; |
| import org.apache.iotdb.db.metadata.PartialPath; |
| import org.apache.iotdb.db.query.context.QueryContext; |
| import org.apache.iotdb.db.query.reader.chunk.DiskChunkLoader; |
| import org.apache.iotdb.db.utils.QueryUtils; |
| import org.apache.iotdb.tsfile.file.metadata.IChunkMetadata; |
| import org.apache.iotdb.tsfile.file.metadata.ITimeSeriesMetadata; |
| import org.apache.iotdb.tsfile.read.controller.IChunkMetadataLoader; |
| import org.apache.iotdb.tsfile.read.filter.basic.Filter; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| |
| public class DiskChunkMetadataLoader implements IChunkMetadataLoader { |
| |
| private final TsFileResource resource; |
| private final PartialPath seriesPath; |
| private final QueryContext context; |
| // time filter or value filter, only used to check time range |
| private final Filter filter; |
| |
| private static final Logger DEBUG_LOGGER = LoggerFactory.getLogger("QUERY_DEBUG"); |
| |
| public DiskChunkMetadataLoader( |
| TsFileResource resource, PartialPath seriesPath, QueryContext context, Filter filter) { |
| this.resource = resource; |
| this.seriesPath = seriesPath; |
| this.context = context; |
| this.filter = filter; |
| } |
| |
| @Override |
| public List<IChunkMetadata> loadChunkMetadataList(ITimeSeriesMetadata timeseriesMetadata) { |
| List<IChunkMetadata> chunkMetadataList = timeseriesMetadata.getChunkMetadataList(); |
| |
| setDiskChunkLoader(chunkMetadataList, resource, seriesPath, context); |
| |
| /* |
| * remove not satisfied ChunkMetaData |
| */ |
| chunkMetadataList.removeIf( |
| chunkMetaData -> |
| (filter != null |
| && !filter.satisfyStartEndTime( |
| chunkMetaData.getStartTime(), chunkMetaData.getEndTime())) |
| || chunkMetaData.getStartTime() > chunkMetaData.getEndTime()); |
| |
| // For chunkMetadata from old TsFile, do not set version |
| for (IChunkMetadata metadata : chunkMetadataList) { |
| if (!metadata.isFromOldTsFile()) { |
| metadata.setVersion(resource.getVersion()); |
| } |
| } |
| |
| if (context.isDebug()) { |
| DEBUG_LOGGER.info("After removed by filter Chunk meta data list is: "); |
| chunkMetadataList.forEach(c -> DEBUG_LOGGER.info(c.toString())); |
| } |
| |
| return chunkMetadataList; |
| } |
| |
| @Override |
| public boolean isMemChunkMetadataLoader() { |
| return false; |
| } |
| |
| public static void setDiskChunkLoader( |
| List<IChunkMetadata> chunkMetadataList, |
| TsFileResource resource, |
| PartialPath seriesPath, |
| QueryContext context) { |
| List<Modification> pathModifications = |
| context.getPathModifications(resource.getModFile(), seriesPath); |
| |
| if (context.isDebug()) { |
| DEBUG_LOGGER.info( |
| "Modifications size is {} for file Path: {} ", |
| pathModifications.size(), |
| resource.getTsFilePath()); |
| pathModifications.forEach(c -> DEBUG_LOGGER.info(c.toString())); |
| } |
| |
| if (!pathModifications.isEmpty()) { |
| QueryUtils.modifyChunkMetaData(chunkMetadataList, pathModifications); |
| } |
| |
| if (context.isDebug()) { |
| DEBUG_LOGGER.info("After modification Chunk meta data list is: "); |
| chunkMetadataList.forEach(c -> DEBUG_LOGGER.info(c.toString())); |
| } |
| |
| // it is ok, even if it is not thread safe, because the cost of creating a DiskChunkLoader is |
| // very cheap. |
| chunkMetadataList.forEach( |
| chunkMetadata -> { |
| if (chunkMetadata.getChunkLoader() == null) { |
| chunkMetadata.setFilePath(resource.getTsFilePath()); |
| chunkMetadata.setClosed(resource.isClosed()); |
| chunkMetadata.setChunkLoader(new DiskChunkLoader(context)); |
| } |
| }); |
| } |
| } |