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118 changes: 118 additions & 0 deletions
118
http4s/src/main/scala/com.snowplowanalytics.snowplow.collector.core/Telemetry.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| package com.snowplowanalytics.snowplow.collector.core | ||
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| import org.typelevel.log4cats.Logger | ||
| import org.typelevel.log4cats.slf4j.Slf4jLogger | ||
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| import cats.data.NonEmptyList | ||
| import cats.implicits._ | ||
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| import cats.effect.{Async, Resource, Sync} | ||
| import cats.effect.std.Random | ||
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| import fs2.Stream | ||
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| import org.http4s.client.{Client => HttpClient} | ||
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| import _root_.io.circe.Json | ||
| import _root_.io.circe.syntax._ | ||
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| import com.snowplowanalytics.iglu.core.{SchemaKey, SchemaVer, SelfDescribingData} | ||
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| import com.snowplowanalytics.snowplow.scalatracker.{Tracker, Tracking} | ||
| import com.snowplowanalytics.snowplow.scalatracker.Emitter._ | ||
| import com.snowplowanalytics.snowplow.scalatracker.Emitter.{Result => TrackerResult} | ||
| import com.snowplowanalytics.snowplow.scalatracker.emitters.http4s.Http4sEmitter | ||
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| object Telemetry { | ||
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| implicit private def unsafeLogger[F[_]: Sync]: Logger[F] = | ||
| Slf4jLogger.getLogger[F] | ||
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| def run[F[_]: Async: Tracking]( | ||
| telemetryConfig: Config.Telemetry, | ||
| httpClient: HttpClient[F], | ||
| appInfo: AppInfo, | ||
| region: Option[String], | ||
| cloud: Option[String] | ||
| ): Stream[F, Unit] = | ||
| if (telemetryConfig.disable) | ||
| Stream.empty.covary[F] | ||
| else { | ||
| val sdj = makeHeartbeatEvent( | ||
| telemetryConfig, | ||
| region, | ||
| cloud, | ||
| appInfo.moduleName, | ||
| appInfo.version | ||
| ) | ||
| Stream.resource(initTracker(telemetryConfig, appInfo.moduleName, httpClient)).flatMap { tracker => | ||
| Stream.fixedDelay[F](telemetryConfig.interval).evalMap { _ => | ||
| tracker.trackSelfDescribingEvent(unstructEvent = sdj) >> tracker.flushEmitters() | ||
| } | ||
| } | ||
| } | ||
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| private def initTracker[F[_]: Async: Tracking]( | ||
| config: Config.Telemetry, | ||
| appName: String, | ||
| client: HttpClient[F] | ||
| ): Resource[F, Tracker[F]] = | ||
| for { | ||
| random <- Resource.eval(Random.scalaUtilRandom[F]) | ||
| emitter <- { | ||
| implicit val r: Random[F] = random | ||
| Http4sEmitter.build( | ||
| EndpointParams(config.url, port = Some(config.port), https = config.secure), | ||
| client, | ||
| retryPolicy = RetryPolicy.MaxAttempts(10), | ||
| callback = Some(emitterCallback[F] _) | ||
| ) | ||
| } | ||
| } yield new Tracker(NonEmptyList.of(emitter), "tracker-telemetry", appName) | ||
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| private def emitterCallback[F[_]: Sync]( | ||
| params: EndpointParams, | ||
| req: Request, | ||
| res: TrackerResult | ||
| ): F[Unit] = | ||
| res match { | ||
| case TrackerResult.Success(_) => | ||
| Logger[F].debug(s"Telemetry heartbeat successfully sent to ${params.getGetUri}") | ||
| case TrackerResult.Failure(code) => | ||
| Logger[F].warn(s"Sending telemetry hearbeat got unexpected HTTP code $code from ${params.getUri}") | ||
| case TrackerResult.TrackerFailure(exception) => | ||
| Logger[F].warn( | ||
| s"Telemetry hearbeat failed to reach ${params.getUri} with following exception $exception after ${req.attempt} attempts" | ||
| ) | ||
| case TrackerResult.RetriesExceeded(failure) => | ||
| Logger[F].error(s"Stopped trying to send telemetry heartbeat after following failure: $failure") | ||
| } | ||
|
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| private def makeHeartbeatEvent( | ||
| teleCfg: Config.Telemetry, | ||
| region: Option[String], | ||
| cloud: Option[String], | ||
| appName: String, | ||
| appVersion: String | ||
| ): SelfDescribingData[Json] = | ||
| SelfDescribingData( | ||
| SchemaKey("com.snowplowanalytics.oss", "oss_context", "jsonschema", SchemaVer.Full(1, 0, 1)), | ||
| Json.obj( | ||
| "userProvidedId" -> teleCfg.userProvidedId.asJson, | ||
| "autoGeneratedId" -> teleCfg.autoGeneratedId.asJson, | ||
| "moduleName" -> teleCfg.moduleName.asJson, | ||
| "moduleVersion" -> teleCfg.moduleVersion.asJson, | ||
| "instanceId" -> teleCfg.instanceId.asJson, | ||
| "appGeneratedId" -> java.util.UUID.randomUUID.toString.asJson, | ||
| "cloud" -> cloud.asJson, | ||
| "region" -> region.asJson, | ||
| "applicationName" -> appName.asJson, | ||
| "applicationVersion" -> appVersion.asJson | ||
| ) | ||
| ) | ||
|
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| case class TelemetryInfo( | ||
| region: Option[String], | ||
| cloud: Option[String] | ||
| ) | ||
| } |
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