| /* |
| * 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.write.writer; |
| |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.iotdb.tsfile.fileSystem.FSFactoryProducer; |
| import org.apache.iotdb.tsfile.fileSystem.fsFactory.FSFactory; |
| import org.apache.iotdb.tsfile.read.TsFileReader; |
| import org.apache.iotdb.tsfile.read.TsFileSequenceReader; |
| import org.apache.iotdb.tsfile.read.common.Path; |
| import org.apache.iotdb.tsfile.read.common.RowRecord; |
| import org.apache.iotdb.tsfile.read.expression.QueryExpression; |
| import org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet; |
| import org.apache.iotdb.tsfile.utils.TsFileGeneratorForTest; |
| import org.apache.iotdb.tsfile.write.TsFileWriter; |
| import org.apache.iotdb.tsfile.write.record.TSRecord; |
| import org.apache.iotdb.tsfile.write.record.datapoint.FloatDataPoint; |
| import org.apache.iotdb.tsfile.write.schema.MeasurementSchema; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| public class ForceAppendTsFileWriterTest { |
| private static final String FILE_NAME = |
| TsFileGeneratorForTest.getTestTsFilePath("root.sg1", 0, 0, 1); |
| private static FSFactory fsFactory = FSFactoryProducer.getFSFactory(); |
| |
| @Test |
| public void test() throws Exception { |
| File file = fsFactory.getFile(FILE_NAME); |
| if (file.exists()) { |
| fail("Do not know why the file exists...." + file.getAbsolutePath()); |
| } |
| System.out.println(file.getAbsolutePath()); |
| if (!file.getParentFile().exists()) { |
| Assert.assertTrue(file.getParentFile().mkdirs()); |
| } |
| if (!file.getParentFile().isDirectory()) { |
| fail("folder is not a directory...." + file.getParentFile().getAbsolutePath()); |
| } |
| |
| TsFileWriter writer = new TsFileWriter(file); |
| writer.registerTimeseries( |
| new Path("d1"), new MeasurementSchema("s1", TSDataType.FLOAT, TSEncoding.RLE)); |
| writer.registerTimeseries( |
| new Path("d1"), new MeasurementSchema("s2", TSDataType.FLOAT, TSEncoding.RLE)); |
| writer.write( |
| new TSRecord(1, "d1") |
| .addTuple(new FloatDataPoint("s1", 5)) |
| .addTuple(new FloatDataPoint("s2", 4))); |
| writer.write( |
| new TSRecord(2, "d1") |
| .addTuple(new FloatDataPoint("s1", 5)) |
| .addTuple(new FloatDataPoint("s2", 4))); |
| writer.flushAllChunkGroups(); |
| |
| long firstMetadataPosition = writer.getIOWriter().getPos(); |
| writer.close(); |
| ForceAppendTsFileWriter fwriter = new ForceAppendTsFileWriter(file); |
| assertEquals(firstMetadataPosition, fwriter.getTruncatePosition()); |
| fwriter.doTruncate(); |
| |
| // write more data into this TsFile |
| writer = new TsFileWriter(fwriter); |
| writer.registerTimeseries( |
| new Path("d1"), new MeasurementSchema("s1", TSDataType.FLOAT, TSEncoding.RLE)); |
| writer.registerTimeseries( |
| new Path("d1"), new MeasurementSchema("s2", TSDataType.FLOAT, TSEncoding.RLE)); |
| writer.write( |
| new TSRecord(3, "d1") |
| .addTuple(new FloatDataPoint("s1", 5)) |
| .addTuple(new FloatDataPoint("s2", 4))); |
| writer.close(); |
| TsFileReader tsFileReader = new TsFileReader(new TsFileSequenceReader(file.getPath())); |
| List<Path> pathList = new ArrayList<>(); |
| pathList.add(new Path("d1", "s1", true)); |
| pathList.add(new Path("d1", "s2", true)); |
| QueryExpression queryExpression = QueryExpression.create(pathList, null); |
| QueryDataSet dataSet = tsFileReader.query(queryExpression); |
| RowRecord record = dataSet.next(); |
| assertEquals(1, record.getTimestamp()); |
| assertEquals(5.0f, record.getFields().get(0).getFloatV(), 0.001); |
| assertEquals(4.0f, record.getFields().get(1).getFloatV(), 0.001); |
| record = dataSet.next(); |
| assertEquals(2, record.getTimestamp()); |
| assertEquals(5.0f, record.getFields().get(0).getFloatV(), 0.001); |
| assertEquals(4.0f, record.getFields().get(1).getFloatV(), 0.001); |
| record = dataSet.next(); |
| assertEquals(3, record.getTimestamp()); |
| assertEquals(5.0f, record.getFields().get(0).getFloatV(), 0.001); |
| assertEquals(4.0f, record.getFields().get(1).getFloatV(), 0.001); |
| tsFileReader.close(); |
| assertFalse(dataSet.hasNext()); |
| |
| assertTrue(file.delete()); |
| } |
| } |