Shekharrajak commented on code in PR #19311: URL: https://github.com/apache/druid/pull/19311#discussion_r3087502623
########## extensions-core/kafka-indexing-service/src/test/java/org/apache/druid/indexing/kafka/simulate/EmbeddedShareGroupIngestionTest.java: ########## @@ -0,0 +1,184 @@ +/* + * 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.indexing.kafka.simulate; + +import com.fasterxml.jackson.databind.ObjectMapper; +import org.apache.druid.data.input.impl.CsvInputFormat; +import org.apache.druid.data.input.impl.DimensionsSpec; +import org.apache.druid.data.input.impl.TimestampSpec; +import org.apache.druid.indexer.granularity.UniformGranularitySpec; +import org.apache.druid.indexing.kafka.KafkaIndexTaskModule; +import org.apache.druid.indexing.kafka.KafkaIndexTaskTuningConfig; +import org.apache.druid.indexing.kafka.ShareGroupIndexTask; +import org.apache.druid.indexing.kafka.ShareGroupIndexTaskIOConfig; +import org.apache.druid.jackson.DefaultObjectMapper; +import org.apache.druid.java.util.common.DateTimes; +import org.apache.druid.java.util.common.StringUtils; +import org.apache.druid.java.util.common.granularity.Granularities; +import org.apache.druid.query.DruidMetrics; +import org.apache.druid.segment.indexing.DataSchema; +import org.apache.druid.testing.embedded.EmbeddedBroker; +import org.apache.druid.testing.embedded.EmbeddedCoordinator; +import org.apache.druid.testing.embedded.EmbeddedDruidCluster; +import org.apache.druid.testing.embedded.EmbeddedHistorical; +import org.apache.druid.testing.embedded.EmbeddedIndexer; +import org.apache.druid.testing.embedded.EmbeddedOverlord; +import org.apache.druid.testing.embedded.junit5.EmbeddedClusterTestBase; +import org.apache.kafka.clients.producer.ProducerRecord; +import org.joda.time.DateTime; +import org.junit.jupiter.api.Assertions; +import org.junit.jupiter.api.Test; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.ThreadLocalRandom; + +/** + * End-to-end integration test for Kafka share group ingestion. + * + * Demonstrates the full workflow: + * 1. Start an embedded Druid cluster with Kafka extension + * 2. Create a Kafka topic and produce CSV records + * 3. Submit a ShareGroupIndexTask via the Overlord API + * 4. Wait for records to be ingested + * 5. Verify data via SQL query + * + * Requires Docker for Testcontainers Kafka broker. + */ +public class EmbeddedShareGroupIngestionTest extends EmbeddedClusterTestBase +{ + private static final String COL_TIMESTAMP = "__time"; + private static final String COL_ITEM = "item"; + private static final String COL_VALUE = "value"; + + private final EmbeddedCoordinator coordinator = new EmbeddedCoordinator(); + private final EmbeddedOverlord overlord = new EmbeddedOverlord(); + private final EmbeddedIndexer indexer = new EmbeddedIndexer(); + private final EmbeddedHistorical historical = new EmbeddedHistorical(); + private final EmbeddedBroker broker = new EmbeddedBroker(); + + private ShareGroupKafkaResource kafkaServer; + + @Override + public EmbeddedDruidCluster createCluster() + { + kafkaServer = new ShareGroupKafkaResource(); + + final EmbeddedDruidCluster cluster = EmbeddedDruidCluster.withEmbeddedDerbyAndZookeeper(); + indexer.addProperty("druid.segment.handoff.pollDuration", "PT0.1s"); + + cluster.addExtension(KafkaIndexTaskModule.class) + .addResource(kafkaServer) + .useLatchableEmitter() + .addServer(coordinator) + .addServer(overlord) + .addServer(indexer) + .addServer(historical) + .addServer(broker); + + return cluster; + } + + /** + * Showcase test: Submit a ShareGroupIndexTask, ingest data from Kafka + * using share group semantics, and verify via SQL. + */ + @Test + public void test_shareGroupIngestion_basicEndToEnd() + { + final String topic = dataSource + "_topic"; + kafkaServer.createTopicWithPartitions(topic, 2); + + final int numRecords = 10; + kafkaServer.produceRecordsToTopic( + generateRecords(topic, numRecords, DateTimes.of("2025-06-01")) + ); + + final DataSchema dataSchema = DataSchema.builder() + .withDataSource(dataSource) + .withTimestamp(new TimestampSpec(COL_TIMESTAMP, null, null)) + .withDimensions(DimensionsSpec.EMPTY) + .withGranularity(new UniformGranularitySpec( + Granularities.DAY, + Granularities.NONE, + null + )) + .build(); + + final ShareGroupIndexTaskIOConfig ioConfig = new ShareGroupIndexTaskIOConfig( + topic, + "druid-share-group-test", + kafkaServer.consumerProperties(), + new CsvInputFormat(List.of(COL_TIMESTAMP, COL_ITEM, COL_VALUE), null, null, false, 0, false), + null + ); + + final KafkaIndexTaskTuningConfig tuningConfig = new KafkaIndexTaskTuningConfig( + null, null, null, null, null, null, null, null, null, null, + null, null, null, null, null, null, null, null, null, null, + null, null + ); + + final ObjectMapper mapper = new DefaultObjectMapper(); + final ShareGroupIndexTask task = new ShareGroupIndexTask( + null, + null, + dataSchema, + tuningConfig, + ioConfig, + null, + mapper + ); + + cluster.callApi().submitTask(task); + + indexer.latchableEmitter().waitForEventAggregate( + event -> event.hasMetricName("ingest/events/processed") + .hasDimension(DruidMetrics.DATASOURCE, dataSource), + agg -> agg.hasSumAtLeast(numRecords) + ); + + Assertions.assertEquals( Review Comment: Making sure we read all the records. -- This is an automated message from the Apache Git Service. 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