mirror of
https://github.com/twitter/the-algorithm.git
synced 2024-06-23 03:26:05 +02:00
ef4c5eb65e
Please note we have force-pushed a new initial commit in order to remove some publicly-available Twitter user information. Note that this process may be required in the future.
43 lines
1.7 KiB
Scala
43 lines
1.7 KiB
Scala
package com.twitter.home_mixer.functional_component.filter
|
|
|
|
import com.twitter.home_mixer.model.HomeFeatures.GetOlderFeature
|
|
import com.twitter.home_mixer.model.HomeFeatures.ServedTweetIdsFeature
|
|
import com.twitter.home_mixer.util.CandidatesUtil
|
|
import com.twitter.product_mixer.component_library.model.candidate.TweetCandidate
|
|
import com.twitter.product_mixer.core.functional_component.filter.Filter
|
|
import com.twitter.product_mixer.core.functional_component.filter.FilterResult
|
|
import com.twitter.product_mixer.core.model.common.CandidateWithFeatures
|
|
import com.twitter.product_mixer.core.model.common.identifier.FilterIdentifier
|
|
import com.twitter.product_mixer.core.pipeline.PipelineQuery
|
|
import com.twitter.stitch.Stitch
|
|
|
|
object PreviouslyServedTweetsFilter
|
|
extends Filter[PipelineQuery, TweetCandidate]
|
|
with Filter.Conditionally[PipelineQuery, TweetCandidate] {
|
|
|
|
override val identifier: FilterIdentifier = FilterIdentifier("PreviouslyServedTweets")
|
|
|
|
override def onlyIf(
|
|
query: PipelineQuery,
|
|
candidates: Seq[CandidateWithFeatures[TweetCandidate]]
|
|
): Boolean = {
|
|
query.features.exists(_.getOrElse(GetOlderFeature, false))
|
|
}
|
|
|
|
override def apply(
|
|
query: PipelineQuery,
|
|
candidates: Seq[CandidateWithFeatures[TweetCandidate]]
|
|
): Stitch[FilterResult[TweetCandidate]] = {
|
|
|
|
val servedTweetIds =
|
|
query.features.map(_.getOrElse(ServedTweetIdsFeature, Seq.empty)).toSeq.flatten.toSet
|
|
|
|
val (removed, kept) = candidates.partition { candidate =>
|
|
val tweetIdAndSourceId = CandidatesUtil.getTweetIdAndSourceId(candidate)
|
|
tweetIdAndSourceId.exists(servedTweetIds.contains)
|
|
}
|
|
|
|
Stitch.value(FilterResult(kept = kept.map(_.candidate), removed = removed.map(_.candidate)))
|
|
}
|
|
}
|