com.spotify.scio.extra.sparkey.instances.CachedStringSparkeyReader.scala Maven / Gradle / Ivy
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/*
* Copyright 2020 Spotify AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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()
}
}