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User Signal Service (USS) is a centralized online platform that supplies comprehensive data on user actions and behaviors on Twitter. This service stores information on both explicit signals, such as Favorites, Retweets, and replies, and implicit signals like Tweet clicks, profile visits, and more.
71 lines
2.5 KiB
Scala
71 lines
2.5 KiB
Scala
package com.twitter.usersignalservice.signals
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import com.twitter.finagle.stats.StatsReceiver
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import com.twitter.simclusters_v2.common.UserId
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import com.twitter.simclusters_v2.thriftscala.InternalId
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import com.twitter.strato.client.Client
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import com.twitter.strato.data.Conv
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import com.twitter.strato.thrift.ScroogeConv
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import com.twitter.usersignalservice.base.Query
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import com.twitter.wtf.candidate.thriftscala.CandidateSeq
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import com.twitter.wtf.candidate.thriftscala.Candidate
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import com.twitter.usersignalservice.base.StratoSignalFetcher
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import com.twitter.usersignalservice.thriftscala.Signal
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import com.twitter.usersignalservice.thriftscala.SignalType
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import com.twitter.util.Future
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import com.twitter.util.Timer
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import javax.inject.Inject
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import javax.inject.Singleton
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@Singleton
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case class RealGraphOonFetcher @Inject() (
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stratoClient: Client,
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timer: Timer,
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stats: StatsReceiver)
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extends StratoSignalFetcher[UserId, Unit, CandidateSeq] {
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import RealGraphOonFetcher._
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override type RawSignalType = Candidate
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override val name: String = this.getClass.getCanonicalName
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override val statsReceiver: StatsReceiver = stats.scope(name)
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override val stratoColumnPath: String = RealGraphOonFetcher.stratoColumnPath
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override val stratoView: Unit = None
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override protected val keyConv: Conv[UserId] = Conv.ofType
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override protected val viewConv: Conv[Unit] = Conv.ofType
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override protected val valueConv: Conv[CandidateSeq] =
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ScroogeConv.fromStruct[CandidateSeq]
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override protected def toStratoKey(userId: UserId): UserId = userId
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override protected def toRawSignals(
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realGraphOonCandidates: CandidateSeq
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): Seq[RawSignalType] = realGraphOonCandidates.candidates
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override def process(
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query: Query,
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rawSignals: Future[Option[Seq[RawSignalType]]]
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): Future[Option[Seq[Signal]]] = {
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rawSignals
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.map {
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_.map(
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_.sortBy(-_.score)
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.collect {
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case c if c.score >= MinRgScore =>
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Signal(
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SignalType.RealGraphOon,
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RealGraphOonFetcher.DefaultTimestamp,
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Some(InternalId.UserId(c.userId)))
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}.take(query.maxResults.getOrElse(Int.MaxValue)))
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}
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}
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}
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object RealGraphOonFetcher {
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val stratoColumnPath = "recommendations/real_graph/realGraphScoresOon.User"
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// quality threshold for real graph score
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private val MinRgScore = 0.0
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// no timestamp for RealGraph Candidates, set default as 0L
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private val DefaultTimestamp = 0L
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}
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