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DefaultIgnoredWriteDetectionStrategy.scala
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DefaultIgnoredWriteDetectionStrategy.scala
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/*
* Copyright 2020 ABSA Group Limited
*
* 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 za.co.absa.spline.harvester.iwd
import org.apache.commons.configuration.Configuration
import za.co.absa.spline.commons.config.ConfigurationImplicits.ConfigurationRequiredWrapper
import za.co.absa.spline.harvester.LineageHarvester.Metrics
import za.co.absa.spline.harvester.iwd.DefaultIgnoredWriteDetectionStrategy._
object DefaultIgnoredWriteDetectionStrategy {
val OnMissingMetricsKey = "onMissingMetrics"
private object Behaviour {
val IgnoreLineage = "IGNORE_LINEAGE"
val CaptureLineage = "CAPTURE_LINEAGE"
}
}
class DefaultIgnoredWriteDetectionStrategy(ignoreLineageOnMissingMetric: Boolean)
extends IgnoredWriteDetectionStrategy {
def this(configuration: Configuration) = this({
val behaviour = configuration.getRequiredString(OnMissingMetricsKey)
behaviour == Behaviour.IgnoreLineage
})
override def name = "Write metrics"
override def wasWriteIgnored(writeMetrics: Metrics): Boolean = {
writeMetrics.get("numFiles").map(_ == 0).getOrElse(ignoreLineageOnMissingMetric)
}
}