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More control on event publishing (#61)
* More control on event publishing
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102 changes: 102 additions & 0 deletions
102
thoth-core-reactor/src/test/java/fr/maif/reactor/KafkaContainerTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package fr.maif.reactor; | ||
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| import org.apache.kafka.clients.admin.Admin; | ||
| import org.apache.kafka.clients.admin.AdminClientConfig; | ||
| import org.apache.kafka.clients.admin.CreateTopicsResult; | ||
| import org.apache.kafka.clients.admin.NewTopic; | ||
| import org.apache.kafka.clients.consumer.ConsumerConfig; | ||
| import org.apache.kafka.clients.producer.ProducerConfig; | ||
| import org.apache.kafka.clients.producer.ProducerRecord; | ||
| import org.apache.kafka.common.serialization.StringDeserializer; | ||
| import org.apache.kafka.common.serialization.StringSerializer; | ||
| import org.testcontainers.containers.KafkaContainer; | ||
| import org.testcontainers.junit.jupiter.Testcontainers; | ||
| import org.testcontainers.utility.DockerImageName; | ||
| import reactor.core.publisher.Mono; | ||
| import reactor.kafka.receiver.ReceiverOptions; | ||
| import reactor.kafka.sender.KafkaSender; | ||
| import reactor.kafka.sender.SenderOptions; | ||
| import reactor.kafka.sender.SenderRecord; | ||
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| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.TimeoutException; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
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| import static io.vavr.API.println; | ||
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| @Testcontainers | ||
| public interface KafkaContainerTest { | ||
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| AtomicInteger counter = new AtomicInteger(0); | ||
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| KafkaContainer kafkaContainer = new KafkaContainer(DockerImageName.parse("confluentinc/cp-kafka:7.4.0")); | ||
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| static void startContainer() { | ||
| kafkaContainer.start(); | ||
| } | ||
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| default String bootstrapServers() { | ||
| return kafkaContainer.getBootstrapServers(); | ||
| } | ||
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| default Admin adminClient() { | ||
| return Admin.create(Map.of( | ||
| AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaContainer.getBootstrapServers() | ||
| )); | ||
| } | ||
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| default String createTopic() { | ||
| return createTopic("topic-"+counter.incrementAndGet(), 3, 1); | ||
| } | ||
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| default String createTopic(String name, int partitions, int replication) { | ||
| try { | ||
| CreateTopicsResult createTopicsResult = adminClient().createTopics(java.util.List.of(new NewTopic(name, partitions, (short) replication))); | ||
| createTopicsResult.all().get(10, TimeUnit.SECONDS); | ||
| } catch (InterruptedException | ExecutionException | TimeoutException e) { | ||
| throw new RuntimeException("Unable to create topic with name " + name, e); | ||
| } | ||
| return name; | ||
| } | ||
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| default void deleteTopics() { | ||
| try { | ||
| Set<String> topics = adminClient().listTopics().names().get(5, TimeUnit.SECONDS); | ||
| if (!topics.isEmpty()) { | ||
| println("Deleting " + String.join(",", topics)); | ||
| adminClient().deleteTopics(topics).all().get(); | ||
| } | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
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| default ReceiverOptions<String, String> receiverDefault() { | ||
| return ReceiverOptions.<String, String>create(Map.of( | ||
| ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaContainer.getBootstrapServers() | ||
| )) | ||
| .withKeyDeserializer(new StringDeserializer()) | ||
| .withValueDeserializer(new StringDeserializer()); | ||
| } | ||
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| default SenderOptions<String, String> senderDefault() { | ||
| return SenderOptions.<String, String>create(Map.of( | ||
| ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, kafkaContainer.getBootstrapServers() | ||
| )) | ||
| .withKeySerializer(new StringSerializer()) | ||
| .withValueSerializer(new StringSerializer()); | ||
| } | ||
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| default void produceString(String topic, String event) { | ||
| KafkaSender.create(senderDefault()).send(Mono.just( | ||
| SenderRecord.create(new ProducerRecord<>( | ||
| topic, event | ||
| ), null) | ||
| )).collectList().block(); | ||
| } | ||
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| } |
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