io.github.embeddedkafka.connect.EmbeddedConnectConfig.scala Maven / Gradle / Ivy

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embedded-kafka-connect

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package io.github.embeddedkafka.connect

import java.nio.file.Path

import io.github.embeddedkafka.EmbeddedKafkaConfig

import org.apache.kafka.connect.runtime.rest.RestServerConfig
import org.apache.kafka.connect.runtime.standalone.StandaloneConfig
import org.apache.kafka.connect.runtime.WorkerConfig

/**
  * Kafka Connect config generator.
  *
  * @tparam C
  *   an [[EmbeddedKafkaConfig]]
  */
private[embeddedkafka] trait EmbeddedConnectConfig[C <: EmbeddedKafkaConfig] {
  protected[embeddedkafka] def baseConnectConfig(
      connectPort: Int,
      offsets: Path
  )(
      implicit kafkaConfig: C
  ): Map[String, String] =
    Map(
      RestServerConfig.LISTENERS_CONFIG -> s"http://localhost:$connectPort",
      WorkerConfig.BOOTSTRAP_SERVERS_CONFIG -> s"localhost:${kafkaConfig.kafkaPort}",
      WorkerConfig.KEY_CONVERTER_CLASS_CONFIG -> "org.apache.kafka.connect.json.JsonConverter",
      WorkerConfig.VALUE_CONVERTER_CLASS_CONFIG -> "org.apache.kafka.connect.json.JsonConverter",
      WorkerConfig.OFFSET_COMMIT_INTERVAL_MS_CONFIG -> "10000",
      StandaloneConfig.OFFSET_STORAGE_FILE_FILENAME_CONFIG -> offsets.toAbsolutePath.toString
    )

  /**
    * @param connectPort
    *   the Kafka Connect port for the REST API to listen on.
    * @param offsets
    *   the file to store offset data in.
    * @param extraConfig
    *   any additional configuration. If the keys are already defined in the
    *   default they will be overwritten with this.
    * @param kafkaConfig
    *   the Kafka test configuration.
    * @return
    *   a map of config parameters for running the Kafka Connect server.
    */
  def config(connectPort: Int, offsets: Path, extraConfig: Map[String, String])(
      implicit kafkaConfig: C
  ): Map[String, String] =
    baseConnectConfig(connectPort, offsets) ++ extraConfig
}

final class EmbeddedConnectConfigImpl
    extends EmbeddedConnectConfig[EmbeddedKafkaConfig]