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Replace TraceHooks with TracedProvider
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openfeature/sdk-otel4s/src/main/scala/io/cardell/openfeature/otel4s/TraceHook.scala
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openfeature/sdk-otel4s/src/main/scala/io/cardell/openfeature/otel4s/TracedProvider.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| /* | ||
| * Copyright 2023 Alex Cardell | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package io.cardell.openfeature.otel4s | ||
|
|
||
| import cats.Applicative | ||
| import cats.Monad | ||
| import cats.syntax.all._ | ||
| import org.typelevel.otel4s.Attribute | ||
| import org.typelevel.otel4s.AttributeKey | ||
| import org.typelevel.otel4s.Attributes | ||
| import org.typelevel.otel4s.trace.StatusCode | ||
| import org.typelevel.otel4s.trace.Tracer | ||
|
|
||
| import io.cardell.openfeature.EvaluationContext | ||
| import io.cardell.openfeature.StructureCodec | ||
| import io.cardell.openfeature.otel4s.FeatureFlagAttributes.FeatureFlagKey | ||
| import io.cardell.openfeature.otel4s.FeatureFlagAttributes.FeatureFlagProviderName | ||
| import io.cardell.openfeature.otel4s.FeatureFlagAttributes.FeatureFlagVariant | ||
| import io.cardell.openfeature.provider.EvaluationProvider | ||
| import io.cardell.openfeature.provider.Provider | ||
| import io.cardell.openfeature.provider.ProviderMetadata | ||
| import io.cardell.openfeature.provider.ResolutionDetails | ||
| import cats.MonadThrow | ||
|
|
||
| class TracedProvider[F[_]: Tracer: MonadThrow]( | ||
| provider: Provider[F] | ||
| ) extends EvaluationProvider[F] { | ||
|
|
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| override def metadata: ProviderMetadata = provider.metadata | ||
|
|
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| override def resolveBooleanValue( | ||
| flagKey: String, | ||
| defaultValue: Boolean, | ||
| context: EvaluationContext | ||
| ): F[ResolutionDetails[Boolean]] = | ||
| trace("boolean", flagKey)( | ||
| provider.resolveBooleanValue( | ||
| flagKey, | ||
| defaultValue, | ||
| context | ||
| ) | ||
| ) | ||
|
|
||
| override def resolveStringValue( | ||
| flagKey: String, | ||
| defaultValue: String, | ||
| context: EvaluationContext | ||
| ): F[ResolutionDetails[String]] = | ||
| trace("string", flagKey)( | ||
| provider.resolveStringValue( | ||
| flagKey, | ||
| defaultValue, | ||
| context | ||
| ) | ||
| ) | ||
|
|
||
| override def resolveIntValue( | ||
| flagKey: String, | ||
| defaultValue: Int, | ||
| context: EvaluationContext | ||
| ): F[ResolutionDetails[Int]] = | ||
| trace("int", flagKey)( | ||
| provider.resolveIntValue( | ||
| flagKey, | ||
| defaultValue, | ||
| context | ||
| ) | ||
| ) | ||
|
|
||
| override def resolveDoubleValue( | ||
| flagKey: String, | ||
| defaultValue: Double, | ||
| context: EvaluationContext | ||
| ): F[ResolutionDetails[Double]] = | ||
| trace("double", flagKey)( | ||
| provider.resolveDoubleValue( | ||
| flagKey, | ||
| defaultValue, | ||
| context | ||
| ) | ||
| ) | ||
|
|
||
| override def resolveStructureValue[A: StructureCodec]( | ||
| flagKey: String, | ||
| defaultValue: A, | ||
| context: EvaluationContext | ||
| ): F[ResolutionDetails[A]] = | ||
| trace("structure", flagKey)( | ||
| provider.resolveStructureValue( | ||
| flagKey, | ||
| defaultValue, | ||
| context | ||
| ) | ||
| ) | ||
|
|
||
| private def flagAttributes(flagKey: String): Attributes = | ||
| Attributes(FeatureFlagKey(flagKey), FeatureFlagProviderName(metadata.name)) | ||
|
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| private def variantAttributes(maybeVariant: Option[String]): Attributes = | ||
| Attributes.empty.concat(FeatureFlagVariant.maybe(maybeVariant)) | ||
|
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| private def trace[A](flagType: String, flagKey: String)( | ||
| fa: F[ResolutionDetails[A]] | ||
| ): F[ResolutionDetails[A]] = | ||
| Tracer[F].span(s"evaluate-${flagType}-flag").use { span => | ||
| for { | ||
| _ <- span.addAttributes(flagAttributes(flagKey)) | ||
| res <- fa.onError(span.recordException(_)) | ||
| _ <- span.addAttributes(variantAttributes(res.variant)) | ||
| _ <- span.setStatus(StatusCode.Ok) | ||
| } yield res | ||
| } | ||
|
|
||
| } |
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