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Merge pull request #49 from hygt/http
Add Thrift-over-HTTP exporter
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79 changes: 79 additions & 0 deletions
79
...s/jaeger-thrift-common/src/main/scala/io/janstenpickle/trace4cats/jaeger/JaegerSpan.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| package io.janstenpickle.trace4cats.jaeger | ||
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| import cats.data.NonEmptyList | ||
| import cats.syntax.show._ | ||
| import io.jaegertracing.thriftjava._ | ||
| import io.janstenpickle.trace4cats.`export`.SemanticTags | ||
| import io.janstenpickle.trace4cats.model.AttributeValue._ | ||
| import io.janstenpickle.trace4cats.model._ | ||
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| import java.nio.ByteBuffer | ||
| import java.util.concurrent.TimeUnit | ||
| import scala.jdk.CollectionConverters._ | ||
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| private[jaeger] object JaegerSpan { | ||
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| private val statusTags = SemanticTags.statusTags("span.") | ||
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| def makeTags(attributes: Map[String, AttributeValue]): java.util.List[Tag] = | ||
| attributes.view | ||
| .map { | ||
| case (key, StringValue(value)) => | ||
| new Tag(key, TagType.STRING).setVStr(value.value) | ||
| case (key, DoubleValue(value)) => | ||
| new Tag(key, TagType.DOUBLE).setVDouble(value.value) | ||
| case (key, BooleanValue(value)) => | ||
| new Tag(key, TagType.BOOL).setVBool(value.value) | ||
| case (key, LongValue(value)) => | ||
| new Tag(key, TagType.LONG).setVLong(value.value) | ||
| case (key, value: AttributeList) => | ||
| new Tag(key, TagType.STRING).setVStr(value.show) | ||
| } | ||
| .toList | ||
| .asJava | ||
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| def traceIdToLongs(traceId: TraceId): (Long, Long) = { | ||
| val traceIdBuffer = ByteBuffer.wrap(traceId.value) | ||
| (traceIdBuffer.getLong, traceIdBuffer.getLong) | ||
| } | ||
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| def spanIdToLong(spanId: SpanId): Long = ByteBuffer.wrap(spanId.value).getLong | ||
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| def references(links: Option[NonEmptyList[Link]]): java.util.List[SpanRef] = | ||
| links | ||
| .fold(List.empty[SpanRef])(_.map { link => | ||
| val (traceIdHigh, traceIdLow) = traceIdToLongs(link.traceId) | ||
| val spanId = spanIdToLong(link.spanId) | ||
| new SpanRef(SpanRefType.FOLLOWS_FROM, traceIdLow, traceIdHigh, spanId) | ||
| }.toList) | ||
| .asJava | ||
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| def convert(process: TraceProcess): Process = | ||
| new Process(process.serviceName).setTags(makeTags(process.attributes)) | ||
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| def convert(span: CompletedSpan): Span = { | ||
| val (traceIdHigh, traceIdLow) = traceIdToLongs(span.context.traceId) | ||
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| val startMicros = TimeUnit.MILLISECONDS.toMicros(span.start.toEpochMilli) | ||
| val endMicros = TimeUnit.MILLISECONDS.toMicros(span.end.toEpochMilli) | ||
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| val thriftSpan = new Span( | ||
| traceIdLow, | ||
| traceIdHigh, | ||
| spanIdToLong(span.context.spanId), | ||
| span.context.parent.map(parent => ByteBuffer.wrap(parent.spanId.value).getLong).getOrElse(0), | ||
| span.name, | ||
| span.context.traceFlags.sampled match { | ||
| case SampleDecision.Include => 0 | ||
| case SampleDecision.Drop => 1 | ||
| }, | ||
| startMicros, | ||
| endMicros - startMicros | ||
| ) | ||
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| thriftSpan | ||
| .setTags(makeTags(span.allAttributes ++ statusTags(span.status) ++ SemanticTags.kindTags(span.kind))) | ||
| .setReferences(references(span.links)) | ||
| } | ||
|
|
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| } |
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40 changes: 40 additions & 0 deletions
40
...-exporter/src/main/scala/io/janstenpickle/trace4cats/jaeger/JaegerHttpSpanCompleter.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package io.janstenpickle.trace4cats.jaeger | ||
|
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| import cats.effect.kernel.{Async, Resource} | ||
| import fs2.Chunk | ||
| import io.janstenpickle.trace4cats.`export`.{CompleterConfig, QueuedSpanCompleter} | ||
| import io.janstenpickle.trace4cats.kernel.SpanCompleter | ||
| import io.janstenpickle.trace4cats.model.TraceProcess | ||
| import org.http4s.Uri | ||
| import org.http4s.client.Client | ||
| import org.typelevel.log4cats.Logger | ||
| import org.typelevel.log4cats.slf4j.Slf4jLogger | ||
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| object JaegerHttpSpanCompleter { | ||
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| def apply[F[_]: Async]( | ||
| client: Client[F], | ||
| process: TraceProcess, | ||
| host: String = "localhost", | ||
| port: Int = 9411, | ||
| config: CompleterConfig = CompleterConfig(), | ||
| protocol: String = "http" | ||
| ): Resource[F, SpanCompleter[F]] = | ||
| Resource.eval(Slf4jLogger.create[F]).flatMap { implicit logger: Logger[F] => | ||
| Resource | ||
| .eval(JaegerHttpSpanExporter[F, Chunk](client, process, host, port, protocol)) | ||
| .flatMap(QueuedSpanCompleter[F](process, _, config)) | ||
| } | ||
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| def apply[F[_]: Async]( | ||
| client: Client[F], | ||
| process: TraceProcess, | ||
| uri: Uri, | ||
| config: CompleterConfig | ||
| ): Resource[F, SpanCompleter[F]] = | ||
| Resource.eval(Slf4jLogger.create[F]).flatMap { implicit logger: Logger[F] => | ||
| Resource | ||
| .eval(JaegerHttpSpanExporter[F, Chunk](client, process, uri)) | ||
| .flatMap(QueuedSpanCompleter[F](process, _, config)) | ||
| } | ||
| } |
61 changes: 61 additions & 0 deletions
61
...p-exporter/src/main/scala/io/janstenpickle/trace4cats/jaeger/JaegerHttpSpanExporter.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| package io.janstenpickle.trace4cats.jaeger | ||
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| import cats.effect.kernel.Async | ||
| import cats.syntax.either._ | ||
| import cats.syntax.flatMap._ | ||
| import cats.syntax.foldable._ | ||
| import cats.syntax.functor._ | ||
| import cats.{ApplicativeThrow, Foldable} | ||
| import fs2.{Chunk, Stream} | ||
| import io.jaegertracing.thriftjava.{Batch => JaegerBatch, Process, Span} | ||
| import io.janstenpickle.trace4cats.`export`.HttpSpanExporter | ||
| import io.janstenpickle.trace4cats.kernel.SpanExporter | ||
| import io.janstenpickle.trace4cats.model.{Batch, TraceProcess} | ||
| import org.apache.thrift.TSerializer | ||
| import org.http4s._ | ||
| import org.http4s.client.Client | ||
| import org.http4s.headers.`Content-Type` | ||
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| import scala.util.control.NonFatal | ||
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| object JaegerHttpSpanExporter { | ||
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| private val thriftBinary: List[Header.ToRaw] = List(`Content-Type`(MediaType.application.`vnd.apache.thrift.binary`)) | ||
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| private implicit def jaegerBatchEncoder[F[_]: ApplicativeThrow](implicit | ||
| serializer: TSerializer | ||
| ): EntityEncoder[F, JaegerBatch] = | ||
| new EntityEncoder[F, JaegerBatch] { | ||
| def toEntity(a: JaegerBatch): Entity[F] = try { | ||
| val payload = serializer.serialize(a) | ||
| Entity(Stream.chunk(Chunk.array(payload)), Some(payload.length.toLong)) | ||
| } catch { | ||
| case NonFatal(e) => Entity(Stream.raiseError[F](e), None) | ||
| } | ||
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| val headers: Headers = Headers(thriftBinary) | ||
| } | ||
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| private def makeBatch[G[_]: Foldable](jaegerProcess: Process, batch: Batch[G]): JaegerBatch = { | ||
| val spans = batch.spans.foldLeft(new java.util.ArrayList[Span]) { case (acc, span) => | ||
| acc.add(JaegerSpan.convert(span)) | ||
| acc | ||
| } | ||
| new JaegerBatch(jaegerProcess, spans) | ||
| } | ||
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| def apply[F[_]: Async, G[_]: Foldable]( | ||
| client: Client[F], | ||
| process: TraceProcess, | ||
| host: String = "localhost", | ||
| port: Int = 14268, | ||
| protocol: String = "http" | ||
| ): F[SpanExporter[F, G]] = | ||
| Uri.fromString(s"$protocol://$host:$port/api/traces").liftTo[F].flatMap(uri => apply(client, process, uri)) | ||
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| def apply[F[_]: Async, G[_]: Foldable](client: Client[F], process: TraceProcess, uri: Uri): F[SpanExporter[F, G]] = | ||
| Async[F].catchNonFatal(new TSerializer()).map { implicit serializer: TSerializer => | ||
| val jprocess = JaegerSpan.convert(process) | ||
| HttpSpanExporter[F, G, JaegerBatch](client, uri, (batch: Batch[G]) => makeBatch[G](jprocess, batch), thriftBinary) | ||
| } | ||
| } |
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