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builtins: add builtin to retrieve the payload(s) for a span. #60616

Merged
merged 1 commit into from
Feb 18, 2021
Merged

builtins: add builtin to retrieve the payload(s) for a span. #60616

merged 1 commit into from
Feb 18, 2021

Commits on Feb 18, 2021

  1. builtins: add builtin to retrieve the payload(s) for a span. 

    The `crdb_internal.payloads_for_span` builtin retrieves all
payloads for a given span ID, given that the span is part of an
active trace. The payloads are returned in JSONB format. If the
span is not found, or if the span does not have any payloads, the
builtin returns an empty JSON object.

With the appropriate usage of this builtin and the
`crdb_internal.trace_id` builtin as shown in the `contention_event`
logic test, all payloads for the current trace may be surfaced.

Release note (sql change): add `payloads_for_span` builtin that
takes in a span ID and returns its paylods in JSONB format. If
the span is not found, or if the span does not have any payloads,
the builtin returns an empty JSON object.
    angelapwen committed Feb 18, 2021
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