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• 0.10.0-alpha1
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• CachedStringSparkeyReader.scala

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com.spotify.scio.extra.sparkey.instances.CachedStringSparkeyReader.scala Maven / Gradle / Ivy

package com.spotify.scio.extra.sparkey.instances

import com.spotify.scio.util.Cache
import com.spotify.sparkey.SparkeyReader

/** A wrapper around `SparkeyReader` that includes an in-memory Caffeine cache. */
class CachedStringSparkeyReader(val sparkey: SparkeyReader, val cache: Cache[String, String])
    extends StringSparkeyReader(sparkey) {
  override def get(key: String): Option[String] =
    Option(cache.get(key, sparkey.getAsString(key)))

  def close(): Unit = {
    sparkey.close()
    cache.invalidateAll()
  }
}