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26 lines
1.1 KiB
Scala
26 lines
1.1 KiB
Scala
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package com.twitter.product_mixer.component_library.gate
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import com.twitter.product_mixer.core.functional_component.gate.Gate
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import com.twitter.product_mixer.core.model.common.identifier.ComponentIdentifier
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import com.twitter.product_mixer.core.model.common.identifier.GateIdentifier
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import com.twitter.product_mixer.core.pipeline.PipelineQuery
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import com.twitter.product_mixer.core.quality_factor.HasQualityFactorStatus
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import com.twitter.stitch.Stitch
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/**
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* A Gate that only continues if the quality factor value of the pipeline is above the given
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* threshold. This is useful for disabling an expensive function when the pipeline is under pressure
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* (quality factor is low).
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*/
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case class QualityFactorGate(pipelineIdentifier: ComponentIdentifier, threshold: Double)
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extends Gate[PipelineQuery with HasQualityFactorStatus] {
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override val identifier: GateIdentifier = GateIdentifier(
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s"${pipelineIdentifier.name}QualityFactor")
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override def shouldContinue(
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query: PipelineQuery with HasQualityFactorStatus
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): Stitch[Boolean] =
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Stitch.value(query.getQualityFactorCurrentValue(pipelineIdentifier) >= threshold)
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}
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