ccaominh commented on a change in pull request #8823: Add InputSource and InputFormat interfaces URL: https://github.com/apache/incubator-druid/pull/8823#discussion_r343934419
########## File path: core/src/test/java/org/apache/druid/data/input/impl/SplitIteratingReaderTest.java ########## @@ -0,0 +1,98 @@ +/* + * 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.druid.data.input.impl; + +import com.google.common.collect.ImmutableList; +import com.google.common.collect.Iterables; +import org.apache.druid.data.input.InputRow; +import org.apache.druid.data.input.InputSplit; +import org.apache.druid.java.util.common.DateTimes; +import org.apache.druid.java.util.common.StringUtils; +import org.apache.druid.java.util.common.parsers.CloseableIterator; +import org.junit.Assert; +import org.junit.Rule; +import org.junit.Test; +import org.junit.rules.TemporaryFolder; + +import java.io.File; +import java.io.IOException; +import java.io.Writer; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.util.ArrayList; +import java.util.List; + +public class SplitIteratingReaderTest +{ + @Rule + public final TemporaryFolder temporaryFolder = new TemporaryFolder(); + + @Test + public void test() throws IOException + { + final List<File> files = new ArrayList<>(); + for (int i = 0; i < 5; i++) { + final File file = temporaryFolder.newFile("test_" + i); + files.add(file); + try (Writer writer = Files.newBufferedWriter(file.toPath(), StandardCharsets.UTF_8)) { + writer.write(StringUtils.format("%d,%s,%d\n", 20190101 + i, "name_" + i, i)); + writer.write(StringUtils.format("%d,%s,%d", 20190102 + i, "name_" + (i + 1), i + 1)); + } + } + final SplitIteratingReader<File> firehose = new SplitIteratingReader<>( + new TimestampSpec("time", "yyyyMMdd", null), + new DimensionsSpec( + DimensionsSpec.getDefaultSchemas(ImmutableList.of("time", "name", "score")) + ), + new CsvInputFormat( + ImmutableList.of("time", "name", "score"), + null, + false, + 0 + ), + files.stream().flatMap(file -> { + try { + return ImmutableList.of(new FileSource(new InputSplit<>(file))).stream(); + } + catch (IOException e) { + throw new RuntimeException(e); + } + }), + temporaryFolder.newFolder() + ); + + try (CloseableIterator<InputRow> iterator = firehose.read()) { + int i = 0; + while (iterator.hasNext()) { + InputRow row = iterator.next(); + Assert.assertEquals(DateTimes.of(StringUtils.format("2019-01-%02d", i + 1)), row.getTimestamp()); + Assert.assertEquals(StringUtils.format("name_%d", i), Iterables.getOnlyElement(row.getDimension("name"))); + Assert.assertEquals(Integer.toString(i), Iterables.getOnlyElement(row.getDimension("score"))); + + Assert.assertTrue(iterator.hasNext()); + row = iterator.next(); + Assert.assertEquals(DateTimes.of(StringUtils.format("2019-01-%02d", i + 2)), row.getTimestamp()); + Assert.assertEquals(StringUtils.format("name_%d", i + 1), Iterables.getOnlyElement(row.getDimension("name"))); + Assert.assertEquals(Integer.toString(i + 1), Iterables.getOnlyElement(row.getDimension("score"))); + i++; + } + } Review comment: Can assert `i` is 5 here. Ideally, also add a named constant for the number of files that's used for both the setup and the assert. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@druid.apache.org For additional commands, e-mail: commits-h...@druid.apache.org
