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Replace kafka-junit with testcontainers
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streams-bootstrap-cli/src/test/java/com/bakdata/kafka/KafkaContainerHelper.java
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| /* | ||
| * MIT License | ||
| * | ||
| * Copyright (c) 2025 bakdata | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in all | ||
| * copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
|
|
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| package com.bakdata.kafka; | ||
|
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| import com.bakdata.kafka.util.ImprovedAdminClient; | ||
| import com.bakdata.kafka.util.TopicSettings; | ||
| import java.time.Duration; | ||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.stream.Collectors; | ||
| import lombok.NonNull; | ||
| import lombok.RequiredArgsConstructor; | ||
| import org.apache.kafka.clients.admin.AdminClientConfig; | ||
| import org.apache.kafka.clients.consumer.Consumer; | ||
| import org.apache.kafka.clients.consumer.ConsumerConfig; | ||
| import org.apache.kafka.clients.consumer.ConsumerRecord; | ||
| import org.apache.kafka.clients.consumer.ConsumerRecords; | ||
| import org.apache.kafka.clients.consumer.KafkaConsumer; | ||
| import org.apache.kafka.clients.producer.KafkaProducer; | ||
| import org.apache.kafka.clients.producer.Producer; | ||
| import org.apache.kafka.clients.producer.ProducerConfig; | ||
| import org.apache.kafka.clients.producer.ProducerRecord; | ||
| import org.apache.kafka.common.PartitionInfo; | ||
| import org.apache.kafka.common.TopicPartition; | ||
| import org.apache.kafka.common.serialization.StringDeserializer; | ||
| import org.apache.kafka.common.serialization.StringSerializer; | ||
| import org.apache.kafka.streams.KeyValue; | ||
| import org.testcontainers.kafka.ConfluentKafkaContainer; | ||
|
|
||
| @RequiredArgsConstructor | ||
| public class KafkaContainerHelper { | ||
|
|
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| public static final TopicSettings DEFAULT_TOPIC_SETTINGS = TopicSettings.builder() | ||
| .partitions(1) | ||
| .replicationFactor((short) 1) | ||
| .build(); | ||
| private final @NonNull ConfluentKafkaContainer kafkaCluster; | ||
|
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| private static <K, V> List<ConsumerRecord<K, V>> pollAll(final Consumer<K, V> consumer, final Duration timeout) { | ||
| final List<ConsumerRecord<K, V>> records = new ArrayList<>(); | ||
| ConsumerRecords<K, V> poll = consumer.poll(timeout); | ||
| while (!poll.isEmpty()) { | ||
| poll.forEach(records::add); | ||
| poll = consumer.poll(timeout); | ||
| } | ||
| return records; | ||
| } | ||
|
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| public SenderBuilder send() { | ||
| return new SenderBuilder(Map.of( | ||
| ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class, | ||
| ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class | ||
| )); | ||
| } | ||
|
|
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| public ReaderBuilder read() { | ||
| return new ReaderBuilder(Map.of( | ||
| ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class, | ||
| ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class | ||
| )); | ||
| } | ||
|
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| public ImprovedAdminClient admin() { | ||
| return ImprovedAdminClient.create(Map.of( | ||
| AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, KafkaContainerHelper.this.kafkaCluster.getBootstrapServers() | ||
| )); | ||
| } | ||
|
|
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| @RequiredArgsConstructor | ||
| public class SenderBuilder { | ||
|
|
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| private final @NonNull Map<String, Object> properties; | ||
|
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| public SenderBuilder with(final String key, final Object value) { | ||
| final Map<String, Object> newProperties = new HashMap<>(this.properties); | ||
| newProperties.put(key, value); | ||
| return new SenderBuilder(Map.copyOf(newProperties)); | ||
| } | ||
|
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| public <K, V> void to(final String topic, final Iterable<? extends KeyValue<K, V>> records) { | ||
| final Map<String, Object> producerConfig = new HashMap<>(this.properties); | ||
| producerConfig.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, | ||
| KafkaContainerHelper.this.kafkaCluster.getBootstrapServers()); | ||
| try (final Producer<K, V> producer = new KafkaProducer<>(producerConfig)) { | ||
| records.forEach(kv -> producer.send(new ProducerRecord<>(topic, kv.key, kv.value))); | ||
| } | ||
| } | ||
|
|
||
| } | ||
|
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| @RequiredArgsConstructor | ||
| public class ReaderBuilder { | ||
|
|
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| private final @NonNull Map<String, Object> properties; | ||
|
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| public ReaderBuilder with(final String key, final Object value) { | ||
| final Map<String, Object> newProperties = new HashMap<>(this.properties); | ||
| newProperties.put(key, value); | ||
| return new ReaderBuilder(Map.copyOf(newProperties)); | ||
| } | ||
|
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| public <K, V> List<ConsumerRecord<K, V>> from(final String output, final Duration timeout) { | ||
| final Map<String, Object> consumerConfig = new HashMap<>(this.properties); | ||
| consumerConfig.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, | ||
| KafkaContainerHelper.this.kafkaCluster.getBootstrapServers()); | ||
| try (final Consumer<K, V> consumer = new KafkaConsumer<>(consumerConfig)) { | ||
| final List<PartitionInfo> partitionInfos = consumer.listTopics().get(output); | ||
| final List<TopicPartition> topicPartitions = partitionInfos.stream() | ||
| .map(partition -> new TopicPartition(partition.topic(), partition.partition())) | ||
| .collect(Collectors.toList()); | ||
| consumer.assign(topicPartitions); | ||
| consumer.seekToBeginning(topicPartitions); | ||
| return pollAll(consumer, timeout); | ||
| } | ||
| } | ||
|
|
||
| } | ||
| } |
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