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53 changes: 53 additions & 0 deletions
53
...-testkit/src/main/scala/org/typelevel/otel4s/sdk/testkit/trace/InMemorySpanExporter.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * Copyright 2024 Typelevel | ||
| * | ||
| * 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 org.typelevel.otel4s.sdk.testkit.trace | ||
|
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| import cats.Foldable | ||
| import cats.Monad | ||
| import cats.effect.Concurrent | ||
| import cats.effect.std.Queue | ||
| import cats.syntax.foldable._ | ||
| import cats.syntax.functor._ | ||
| import org.typelevel.otel4s.sdk.trace.data.SpanData | ||
| import org.typelevel.otel4s.sdk.trace.exporter.SpanExporter | ||
|
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| final class InMemorySpanExporter[F[_]: Monad] private ( | ||
| queue: Queue[F, SpanData] | ||
| ) extends SpanExporter[F] { | ||
| val name: String = "InMemorySpanExporter" | ||
|
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| def exportSpans[G[_]: Foldable](spans: G[SpanData]): F[Unit] = | ||
| spans.traverse_(span => queue.offer(span)) | ||
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| def flush: F[Unit] = | ||
| Monad[F].unit | ||
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| def finishedSpans: F[List[SpanData]] = | ||
| queue.tryTakeN(None) | ||
|
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| } | ||
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| object InMemorySpanExporter { | ||
|
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| def create[F[_]: Concurrent]( | ||
| capacity: Option[Int] | ||
| ): F[InMemorySpanExporter[F]] = | ||
| for { | ||
| queue <- capacity.fold(Queue.unbounded[F, SpanData])(Queue.bounded(_)) | ||
| } yield new InMemorySpanExporter[F](queue) | ||
|
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| } |
86 changes: 86 additions & 0 deletions
86
sdk/trace-testkit/src/main/scala/org/typelevel/otel4s/sdk/testkit/trace/TestkitTraces.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| /* | ||
| * Copyright 2024 Typelevel | ||
| * | ||
| * 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. | ||
| */ | ||
|
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| package org.typelevel.otel4s.sdk.testkit.trace | ||
|
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| import cats.FlatMap | ||
| import cats.Parallel | ||
| import cats.effect.Async | ||
| import cats.effect.Resource | ||
| import cats.effect.std.Console | ||
| import cats.effect.std.Random | ||
| import cats.syntax.flatMap._ | ||
| import org.typelevel.otel4s.context.LocalProvider | ||
| import org.typelevel.otel4s.sdk.context.Context | ||
| import org.typelevel.otel4s.sdk.context.LocalContext | ||
| import org.typelevel.otel4s.sdk.context.LocalContextProvider | ||
| import org.typelevel.otel4s.sdk.trace.SdkTracerProvider | ||
| import org.typelevel.otel4s.sdk.trace.data.SpanData | ||
| import org.typelevel.otel4s.sdk.trace.processor.BatchSpanProcessor | ||
| import org.typelevel.otel4s.sdk.trace.processor.SpanProcessor | ||
| import org.typelevel.otel4s.trace.TracerProvider | ||
|
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| trait TestkitTraces[F[_]] { | ||
|
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| /** The [[org.typelevel.otel4s.trace.TracerProvider TracerProvider]]. | ||
| */ | ||
| def tracerProvider: TracerProvider[F] | ||
|
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| /** The list of finished spans. | ||
| * | ||
| * @note | ||
| * each invocation cleans up the internal buffer. | ||
| */ | ||
| def finishedSpans: F[List[SpanData]] | ||
| } | ||
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| object TestkitTraces { | ||
|
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| /** Creates [[TestkitTraces]] that keeps spans in-memory. | ||
| * | ||
| * @param customize | ||
| * the customization of the builder | ||
| */ | ||
| def inMemory[F[_]: Async: Parallel: Console: LocalContextProvider]( | ||
| customize: SdkTracerProvider.Builder[F] => SdkTracerProvider.Builder[F] = | ||
| (b: SdkTracerProvider.Builder[F]) => b | ||
| ): Resource[F, TestkitTraces[F]] = { | ||
| def createTracerProvider( | ||
| processor: SpanProcessor[F] | ||
| )(implicit local: LocalContext[F]): F[TracerProvider[F]] = | ||
| Random.scalaUtilRandom[F].flatMap { implicit random => | ||
| val builder = SdkTracerProvider.builder[F].addSpanProcessor(processor) | ||
| customize(builder).build | ||
| } | ||
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| for { | ||
| local <- Resource.eval(LocalProvider[F, Context].local) | ||
| exporter <- Resource.eval(InMemorySpanExporter.create[F](None)) | ||
| processor <- BatchSpanProcessor.builder(exporter).build | ||
| tracerProvider <- Resource.eval(createTracerProvider(processor)(local)) | ||
| } yield new Impl(tracerProvider, processor, exporter) | ||
| } | ||
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| private final class Impl[F[_]: FlatMap]( | ||
| val provider: TracerProvider[F], | ||
| processor: SpanProcessor[F], | ||
| exporter: InMemorySpanExporter[F] | ||
| ) extends TestkitTraces[F] { | ||
| def finishedSpans: F[List[SpanData]] = | ||
| processor.forceFlush >> exporter.finishedSpans | ||
| } | ||
|
|
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| } |