| /* |
| * 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.hive; |
| |
| import org.apache.iotdb.tsfile.file.metadata.enums.CompressionType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.iotdb.tsfile.read.TsFileSequenceReader; |
| import org.apache.iotdb.tsfile.read.common.Path; |
| import org.apache.iotdb.tsfile.write.TsFileWriter; |
| import org.apache.iotdb.tsfile.write.record.Tablet; |
| import org.apache.iotdb.tsfile.write.schema.MeasurementSchema; |
| import org.apache.iotdb.tsfile.write.schema.Schema; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class TsFileTestHelper { |
| |
| private static final Logger logger = LoggerFactory.getLogger(TsFileTestHelper.class); |
| |
| public static boolean deleteTsFile(String filePath) { |
| File file = new File(filePath); |
| return file.delete(); |
| } |
| |
| public static void writeTsFile(String filePath) { |
| |
| try { |
| File file = new File(filePath); |
| |
| if (file.exists()) { |
| file.delete(); |
| } |
| |
| Schema schema = new Schema(); |
| List<MeasurementSchema> schemaList = new ArrayList<>(); |
| |
| // the number of rows to include in the tablet |
| int rowNum = 1000000; |
| // the number of values to include in the tablet |
| int sensorNum = 10; |
| |
| // add measurements into file schema (all with INT64 data type) |
| for (int i = 0; i < sensorNum; i++) { |
| MeasurementSchema measurementSchema = |
| new MeasurementSchema( |
| "sensor_" + (i + 1), |
| TSDataType.INT64, |
| TSEncoding.TS_2DIFF, |
| CompressionType.UNCOMPRESSED); |
| schema.registerTimeseries(new Path("device_1"), measurementSchema); |
| schemaList.add(measurementSchema); |
| } |
| |
| // add measurements into TSFileWriter |
| TsFileWriter tsFileWriter = new TsFileWriter(file, schema); |
| |
| // construct the tablet |
| Tablet tablet = new Tablet("device_1", schemaList); |
| |
| long[] timestamps = tablet.timestamps; |
| Object[] values = tablet.values; |
| |
| long timestamp = 1; |
| long value = 1000000L; |
| |
| for (int r = 0; r < rowNum; r++, value++) { |
| int row = tablet.rowSize++; |
| timestamps[row] = timestamp++; |
| for (int i = 0; i < sensorNum; i++) { |
| long[] sensor = (long[]) values[i]; |
| sensor[row] = value; |
| } |
| // write Tablet to TsFile |
| if (tablet.rowSize == tablet.getMaxRowNumber()) { |
| tsFileWriter.write(tablet); |
| tablet.reset(); |
| } |
| } |
| // write Tablet to TsFile |
| if (tablet.rowSize != 0) { |
| tsFileWriter.write(tablet); |
| tablet.reset(); |
| } |
| |
| // close TsFile |
| tsFileWriter.close(); |
| } catch (Throwable e) { |
| e.printStackTrace(); |
| System.out.println(e.getMessage()); |
| } |
| } |
| |
| public static void main(String[] args) throws IOException { |
| String filePath = "test.tsfile"; |
| File file = new File(filePath); |
| if (file.exists()) { |
| file.delete(); |
| } |
| writeTsFile(filePath); |
| TsFileSequenceReader reader = new TsFileSequenceReader(filePath); |
| logger.info("Get file meta data: {}", reader.readFileMetadata()); |
| reader.close(); |
| } |
| } |