v0.5.0-RC2

We are happy to announce the second candidate for the upcoming 0.5.0 release.
The SDK tracing modules are now publicly available. Check out the documentation.

API improvements

There are several improvements. Kudos to @NthPortal for the dedicated work!

1) Attributes collection

Attributes is a typesafe collection of attributes with handy methods (get, added, concat):

val attributes = Attributes(Attribute("key", "value"), Attribute("frequency", 12.1))
val frequency: Option[Attribute[Double]] = attributes.get[Double]("frequency")
val withAttribute = attributes.added("some.attribute", 123L)

Attributes can be used with Tracer API too:

val attributes = Attributes(Attribute("http.latency", 0.123d), Attribute("user.id", 1L))
Tracer[IO].span("span", attributes)

2) Simplified conversion between OpenTelemetry Java and otel4s Attributes

import io.opentelemetry.api.common.{Attributes => JAttributes}
import org.typelevel.otel4s.Attributes
import org.typelevel.otel4s.oteljava.AttributeConverters._

val asOtel4s: Attributes =
  JAttributes.builder().put("key", "value").build().toScala
  
val asOpenTelemetry: JAttributes =
  Attributes(Attribute("key", "value")).toJava

3) OtelJava.underlying provides access to the JOpenTelemetry

Now you can access the JOpenTelemetry that OtelJava uses under the hood:

OtelJava.autoConfigured[IO]() { otel4s =>
  val openTelemetry: io.opentelemetry.api.OpenTelemetry = otel4s.underlying
  ???
}

What's Changed

Improvements and enhancements

• Remove unused files by @iRevive in #526
• OpenTelemetrySdk: rename addExporterConfigurer to addSpanExporterConfigurer by @iRevive in #531
• Move KeySelect to AttributeKey by @iRevive in #530
• OtelJava: expose underlying JOpenTelemetry by @iRevive in #539
• sdk: use TelemetryResource.default as an initial resource by @iRevive in #532
• Partially redesign Attributes by @NthPortal in #529
• Simplify PropagatorConverters by @NthPortal in #545
• Add AttributeConverters by @NthPortal in #544
• sdk-metrics: add AggregationTemporality by @iRevive in #541

Internal

• Enable publishing of the sdk modules by @iRevive in #547

Upgrades

• Update cats-effect, cats-effect-kernel, ... to 3.5.4 by @typelevel-steward in #538
• Update http4s-circe, http4s-ember-client to 0.23.26 by @typelevel-steward in #537
• Update scala3-library, ... to 3.3.3 by @typelevel-steward in #528
• Update opentelemetry-api, ... to 1.36.0 by @typelevel-steward in #540
• flake.lock: Update by @typelevel-steward in #546
• Update scala-library, scala-reflect to 2.13.13 by @typelevel-steward in #523

Full Changelog: v0.5.0-RC1...v0.5.0-RC2