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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.
50 lines
1.7 KiB
Scala
50 lines
1.7 KiB
Scala
package com.twitter.usersignalservice.columns
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import com.twitter.stitch.NotFound
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import com.twitter.stitch.Stitch
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import com.twitter.strato.catalog.OpMetadata
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import com.twitter.strato.catalog.Ops
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import com.twitter.strato.config.Policy
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import com.twitter.strato.config.ReadWritePolicy
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import com.twitter.strato.data.Conv
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import com.twitter.strato.data.Description
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import com.twitter.strato.data.Lifecycle
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import com.twitter.strato.fed.StratoFed
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import com.twitter.strato.thrift.ScroogeConv
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import com.twitter.usersignalservice.service.UserSignalService
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import com.twitter.usersignalservice.thriftscala.BatchSignalRequest
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import com.twitter.usersignalservice.thriftscala.BatchSignalResponse
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import javax.inject.Inject
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class UserSignalServiceColumn @Inject() (userSignalService: UserSignalService)
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extends StratoFed.Column(UserSignalServiceColumn.Path)
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with StratoFed.Fetch.Stitch {
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override val metadata: OpMetadata = OpMetadata(
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lifecycle = Some(Lifecycle.Production),
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description = Some(Description.PlainText("User Signal Service Federated Column")))
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override def ops: Ops = super.ops
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override type Key = BatchSignalRequest
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override type View = Unit
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override type Value = BatchSignalResponse
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override val keyConv: Conv[Key] = ScroogeConv.fromStruct[BatchSignalRequest]
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override val viewConv: Conv[View] = Conv.ofType
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override val valueConv: Conv[Value] = ScroogeConv.fromStruct[BatchSignalResponse]
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override def fetch(key: Key, view: View): Stitch[Result[Value]] = {
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userSignalService
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.userSignalServiceHandlerStoreStitch(key)
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.map(result => found(result))
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.handle {
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case NotFound => missing
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}
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}
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}
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object UserSignalServiceColumn {
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val Path = "recommendations/user-signal-service/signals"
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}
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