Version 1.27.0

The log bridge API / SDK are now stable! Some important notes:

• The contents of opentelemetry-api-logs have been merged into opentelemetry-api.
• The contents of opentelemetry-exporter-otlp-logs have been merged into opentelemetry-exporter-otlp.
• The contents of opentelemetry-sdk-logs-testing have been merged into opentelemetry-sdk-testing.
• The opentelemetry-sdk-logs artifact has been marked stable.
• opentelemetry-sdk-extension-autoconfigure has changed the default value of otel.logs.exporter from none to otlp.

NOTE: reminder that the Logs Bridge API is not meant for end users. Log appenders use the API to bridge logs from existing log frameworks (e.g. JUL, Log4j, SLf4J, Logback) into OpenTelemetry. Users configure the Log SDK to dictate how logs are processed and exported. See opentelemetry.io for documentation on usage.

API

• Promote log API to stable (#5341)
• fix doc for OpenTelemetry class (#5454)

SDK

• Ensure correct compiled output and sources are included in multi version jar (#5487)

Logs

• Fix broken link (#5451)
• Add meaningful .toString to NoopLogRecordProcessor and DefaultOpenTelemetry (#5493)
• Promote log SDK to stable (#5341)

Metrics

• Reset exponential aggregator scale after collection (#5496)
• Experimental metric reader and view cardinality limits (#5494)

Exporter

• Merge otlp logs (#5432)
• Append unit to prometheus metric names (#5400)

Testing

• Merge sdk logs testing (#5431)
• Add a hasBucketBoundaries() variant that allows specifying precision (#5457)

SDK Extensions

• Enable otlp logs by default in autoconfigure (#5433)

Semantic Conventions

• Update to semconv 1.20.0 (#5497)

🙇 Thank you

This release was possible thanks to the following contributors who shared their brilliant ideas and awesome pull requests:

@alanwest
@bogdandrutu
@breedx-splk
@Emily-Jiang
@fmhwong
@iRevive
@Izzzu
@jack-berg
@jkwatson
@jsuereth
@kenfinnigan
@lu-xiaoshuang
@mateuszrzeszutek
@psx95
@the-vj
@tigrannajaryan
@trask