Created
May 19, 2018 08:36
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Kafka Consumer Example using Scala
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import java.util.{Collections, Properties} | |
import com.typesafe.config.ConfigFactory | |
import org.apache.kafka.clients.consumer.{ConsumerConfig, KafkaConsumer} | |
import scala.collection.JavaConversions._ | |
object KafkaConsumerExample { | |
def main(args: Array[String]): Unit = { | |
val conf = ConfigFactory.load | |
val envProps = conf.getConfig(args(0)) | |
val props = new Properties() | |
props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, envProps.getString("bootstrap.server")) | |
props.put(ConsumerConfig.GROUP_ID_CONFIG, "1") | |
props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringDeserializer") | |
props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringDeserializer") | |
val consumer = new KafkaConsumer[String, String](props) | |
consumer.subscribe(Collections.singletonList("Kafka-Testing")) | |
while(true){ | |
val records = consumer.poll(500) | |
for (record <- records.iterator()) { | |
println("Received message: (" + record.key() + ", " + record.value() + ") at offset " + record.offset()) | |
} | |
} | |
} | |
} |
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