Compute the cache fingerprint for a node — bg_compute

The fingerprint is a SHA-256 over a deterministic JSON payload combining: the serialization format version, the node kind, normalized params, ordered upstream fingerprints, an environment manifest (R and key package versions), the registered executor, and any backend signature.

Usage

bg_compute_fingerprint(
  project,
  node_id,
  upstream_fingerprints = list(),
  environment_manifest = list(),
  graph = NULL
)

Arguments

project: A bg_handle.
node_id: The ID of the node to fingerprint.
upstream_fingerprints: A named list mapping upstream node IDs to their computed fingerprints.
environment_manifest: Optional list of package versions. When empty, a default manifest (R + bayesgrove version) is used so that reinstalling a new package version invalidates caches.
graph: Optional pre-read graph. If NULL the graph is read from disk.

Value

A SHA-256 fingerprint string.