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date: Sat, 11 Oct 2025 16:25:42 GMT
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import org.apache.spark.SparkConfimport org.apache.spark.streaming.{Seconds, S - Pastebin.com
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- import org.apache.spark.SparkConf
- import org.apache.spark.streaming.{Seconds, StreamingContext}
- import org.apache.spark.streaming.kafka010.{ConsumerStrategies, KafkaUtils, LocationStrategies}
- import org.apache.kafka.clients.consumer.ConsumerRecord
- import org.apache.kafka.clients.producer.{KafkaProducer, ProducerConfig, ProducerRecord}
- import org.apache.kafka.common.serialization.{StringDeserializer, StringSerializer}
- object SparkKafkaValidation {
- def main(args: Array[String]): Unit = {
- // Создаем конфигурацию Spark
- val sparkConf = new SparkConf().setAppName("SparkKafkaValidation").setMaster("local[2]")
- val ssc = new StreamingContext(sparkConf, Seconds(5))
- // Настройки для Kafka
- val kafkaParams = Map[String, Object](
- "bootstrap.servers" -> "localhost:9092",
- "key.deserializer" -> classOf[StringDeserializer],
- "value.deserializer" -> classOf[StringDeserializer],
- "group.id" -> "spark-consumer-group",
- "auto.offset.reset" -> "earliest",
- "enable.auto.commit" -> (false: java.lang.Boolean)
- )
- // Топики Kafka
- val topics = Array("input-topic")
- // Создаем DStream, принимающий сообщения из Kafka
- val stream = KafkaUtils.createDirectStream[String, String](
- ssc,
- LocationStrategies.PreferConsistent,
- ConsumerStrategies.Subscribe[String, String](topics, kafkaParams)
- )
- // Функция для валидации сообщения
- def validateMessage(message: String): Boolean = {
- message.length > 5
- }
- // Отправка сообщения в топик Kafka
- def sendToKafka(topic: String, message: String): Unit = {
- val producerProperties = new java.util.Properties()
- producerProperties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092")
- producerProperties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, classOf[StringSerializer].getName)
- producerProperties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, classOf[StringSerializer].getName)
- val producer = new KafkaProducer[String, String](producerProperties)
- producer.send(new ProducerRecord[String, String](topic, message))
- producer.close()
- }
- // Обрабатываем каждое сообщение из Kafka
- stream.foreachRDD { rdd =>
- rdd.foreach { record =>
- val message = record.value()
- if (validateMessage(message)) {
- // Отправляем валидное сообщение в топик Kafka
- sendToKafka("valid-topic", message)
- println(s"Valid message: $message")
- } else {
- // Отправляем ошибку в топик Kafka
- sendToKafka("error-topic", s"Invalid message: $message")
- println(s"Invalid message: $message")
- }
- }
- }
- // Запускаем Spark Streaming
- ssc.start()
- ssc.awaitTermination()
- }
- }
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