lucasbru commented on code in PR #20236: URL: https://github.com/apache/kafka/pull/20236#discussion_r2247388861
########## streams/integration-tests/src/test/java/org/apache/kafka/streams/integration/DeadLetterQueueIntegrationTest.java: ########## @@ -0,0 +1,353 @@ +/* + * 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.kafka.streams.integration; + +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.consumer.ConsumerRecord; +import org.apache.kafka.common.serialization.ByteArrayDeserializer; +import org.apache.kafka.common.serialization.Deserializer; +import org.apache.kafka.common.serialization.Serdes; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.kafka.common.serialization.StringSerializer; +import org.apache.kafka.common.utils.Utils; +import org.apache.kafka.streams.KafkaStreams; +import org.apache.kafka.streams.KeyValue; +import org.apache.kafka.streams.StreamsBuilder; +import org.apache.kafka.streams.StreamsConfig; +import org.apache.kafka.streams.errors.LogAndContinueProcessingExceptionHandler; +import org.apache.kafka.streams.errors.LogAndFailProcessingExceptionHandler; +import org.apache.kafka.streams.integration.utils.EmbeddedKafkaCluster; +import org.apache.kafka.streams.integration.utils.IntegrationTestUtils; +import org.apache.kafka.streams.kstream.Consumed; +import org.apache.kafka.streams.processor.api.ContextualProcessor; +import org.apache.kafka.streams.processor.api.Record; +import org.apache.kafka.test.StreamsTestUtils; +import org.apache.kafka.test.TestUtils; + +import org.junit.jupiter.api.AfterAll; +import org.junit.jupiter.api.BeforeAll; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Tag; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.Timeout; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.time.Duration; +import java.util.ArrayList; +import java.util.List; +import java.util.Properties; +import java.util.concurrent.atomic.AtomicInteger; + +import static java.util.Collections.singletonList; +import static org.apache.kafka.common.utils.Utils.mkEntry; +import static org.apache.kafka.common.utils.Utils.mkMap; +import static org.apache.kafka.streams.errors.internals.ExceptionHandlerUtils.HEADER_ERRORS_EXCEPTION_MESSAGE_NAME; +import static org.apache.kafka.streams.errors.internals.ExceptionHandlerUtils.HEADER_ERRORS_EXCEPTION_NAME; +import static org.apache.kafka.streams.errors.internals.ExceptionHandlerUtils.HEADER_ERRORS_OFFSET_NAME; +import static org.apache.kafka.streams.errors.internals.ExceptionHandlerUtils.HEADER_ERRORS_PARTITION_NAME; +import static org.apache.kafka.streams.errors.internals.ExceptionHandlerUtils.HEADER_ERRORS_STACKTRACE_NAME; +import static org.apache.kafka.streams.errors.internals.ExceptionHandlerUtils.HEADER_ERRORS_TOPIC_NAME; +import static org.apache.kafka.streams.integration.utils.IntegrationTestUtils.startApplicationAndWaitUntilRunning; +import static org.apache.kafka.streams.utils.TestUtils.waitForApplicationState; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +@Tag("integration") +@Timeout(60) +public class DeadLetterQueueIntegrationTest { + private static final Logger LOG = LoggerFactory.getLogger(DeadLetterQueueIntegrationTest.class); + private static final int NUM_BROKERS = 3; + + public static final EmbeddedKafkaCluster CLUSTER = new EmbeddedKafkaCluster( + NUM_BROKERS, + Utils.mkProperties(mkMap( + mkEntry("auto.create.topics.enable", "true") + )) + ); + + @BeforeAll + public static void startCluster() throws IOException { + CLUSTER.start(); + } + + @AfterAll + public static void closeCluster() { + CLUSTER.stop(); + } + + private String applicationId; + private static final int NUM_TOPIC_PARTITIONS = 3; + private static final String INPUT_TOPIC = "inputTopic"; + private static final String OUTPUT_TOPIC = "outputTopic"; + private static final String DLQ_TOPIC = "dlqTopic"; + + private static final AtomicInteger TEST_NUMBER = new AtomicInteger(0); Review Comment: To generate a unique test names, many other tests use something like: ``` safeTestName = safeUniqueTestName(testInfo); ``` could we use this here? -- This is an automated message from the Apache Git Service. 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