lineage

func Impact ¶

func Impact(c *echo.Context) error

Impact handles GET /lineage/impact?namespace=<ns>&name=<name>[&max_depth=N]

It returns the transitive set of downstream datasets that would be affected if the named dataset changed — i.e. "what breaks if this table changes." Results are breadth-first, shallowest hops first.

max_depth semantics:

• omitted or 0: use the server default (10 hops).
• 1–20: traverse exactly that many hops.
• >20: capped at 20 by the query layer.
• negative: rejected with 400.

Example:

GET /lineage/impact?namespace=default&name=analytics.fact_orders
GET /lineage/impact?namespace=default&name=analytics.fact_orders&max_depth=3