Faraphel
500cdbd95b
- fixed docker-compose.yaml - using environment variable instead of hardcoded values
45 lines
1.4 KiB
Kotlin
45 lines
1.4 KiB
Kotlin
package fr.faraphel.m1_pe_kafka
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/**
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* The consumer
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*/
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import org.apache.kafka.clients.consumer.*
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import java.time.Duration
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import java.util.Collections
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import java.util.Properties
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/**
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* The consumer
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*/
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class Consumer {
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private val properties: Properties = Properties()
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private var consumer: KafkaConsumer<String, String>
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private val topic: String = "mon_beau_topic"
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init {
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this.properties[ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG] = "org.apache.kafka.common.serialization.StringSerializer"
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this.properties[ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG] = "org.apache.kafka.common.serialization.StringSerializer"
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this.properties[ConsumerConfig.GROUP_ID_CONFIG] = "premier_groupe"
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this.properties[ConsumerConfig.AUTO_OFFSET_RESET_CONFIG] = "earliest"
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this.properties[ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG] = System.getenv("KAFKA_BOOTSTRAP_SERVERS")
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?: throw IllegalArgumentException("Missing environment variable: KAFKA_BOOTSTRAP_SERVERS")
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this.consumer = KafkaConsumer(properties);
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}
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fun main() {
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this.consumer.subscribe(Collections.singletonList(topic));
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// Afficher les messages reçu
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while (true) {
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val messages: ConsumerRecords<String, String> = consumer.poll(Duration.ofMillis(500));
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messages.forEach { message ->
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println(">" + message.value())
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}
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}
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}
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}
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