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45 lines
1.8 KiB
Scala
45 lines
1.8 KiB
Scala
package com.twitter.home_mixer.functional_component.candidate_source
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import com.twitter.product_mixer.core.feature.FeatureWithDefaultOnFailure
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import com.twitter.product_mixer.core.feature.featuremap.FeatureMapBuilder
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import com.twitter.product_mixer.core.functional_component.candidate_source.CandidateSourceWithExtractedFeatures
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import com.twitter.product_mixer.core.functional_component.candidate_source.CandidatesWithSourceFeatures
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import com.twitter.product_mixer.core.model.common.identifier.CandidateSourceIdentifier
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import com.twitter.search.earlybird.{thriftscala => t}
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import com.twitter.stitch.Stitch
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import javax.inject.Inject
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import javax.inject.Singleton
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case object EarlybirdResponseTruncatedFeature
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extends FeatureWithDefaultOnFailure[t.EarlybirdRequest, Boolean] {
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override val defaultValue: Boolean = false
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}
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case object EarlybirdBottomTweetFeature
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extends FeatureWithDefaultOnFailure[t.EarlybirdRequest, Option[Long]] {
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override val defaultValue: Option[Long] = None
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}
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@Singleton
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case class EarlybirdCandidateSource @Inject() (
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earlybird: t.EarlybirdService.MethodPerEndpoint)
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extends CandidateSourceWithExtractedFeatures[t.EarlybirdRequest, t.ThriftSearchResult] {
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override val identifier = CandidateSourceIdentifier("Earlybird")
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override def apply(
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request: t.EarlybirdRequest
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): Stitch[CandidatesWithSourceFeatures[t.ThriftSearchResult]] = {
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Stitch.callFuture(earlybird.search(request)).map { response =>
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val candidates = response.searchResults.map(_.results).getOrElse(Seq.empty)
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val features = FeatureMapBuilder()
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.add(EarlybirdResponseTruncatedFeature, candidates.size == request.searchQuery.numResults)
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.add(EarlybirdBottomTweetFeature, candidates.lastOption.map(_.id))
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.build()
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CandidatesWithSourceFeatures(candidates, features)
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}
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}
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}
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