v1.28.0 (2023-12-07)

Context

• No changes.

Traces

• Stabilize how exceptions are recorded using the Trace SDK.
  (#3769)
• Add definition for standard output span exporter.
  (#3740)

Metrics

• Add optional configuration for Prometheus exporters to promote resource attributes to metric attributes
  (#3761)
• Clarifications and flexibility in Exemplar speicification.
  (#3760)

Logs

• Add definition for standard output log record exporter.
  (#3741)
• BREAKING: Change event.name definition to include namespace and removed event.domain from log event attributes.
  (#3749)
• BREAKING: Refine the arguments of the emit Event API. Instead of accepting a LogRecord, the individual arguments are enumerated along with the implementation requirements on how those arguments map to LogRecord.
  (#3772)

Resource

• No changes.

OpenTelemetry Protocol

• Clarify HTTP endpoint configuration option handling.
  (#3739)

Compatibility

• No changes.

SDK Configuration

• Add console as an exporter type that is supported via environment variable configuration.
  (#3742)

Common

• No changes.

Supplementary Guidelines

• No changes.

New Contributors

• @patrickhousley made their first contribution in #3749
• @davix made their first contribution in #3764