Module schema_extensions 

Available on crate feature dial9 only.

Dial9 conventions layered on top of trace schema annotations. Dial9 conventions layered on top of free-form trace schema annotations.

The wire format treats annotation keys and values as opaque strings. This module is the shared vocabulary used by Dial9 producers and consumers.

Modules

roles

Values recognized under ROLE_KEY.

span_types

Values emitted under SPAN_TYPE_KEY.

Constants

DEFAULT_SPAN_TYPE

Span type used when a single-event span schema does not declare a producer or instrumentation family.

ROLE_KEY

Annotation key assigning a structural role to a field.

SPAN_TYPE_KEY

Annotation key carrying the producer or instrumentation family for a span.