component_deltas

component_deltas
component_deltas_latest

The component_deltas view is a time series representation of the collection of component metadata deltas that Lunar collects.

A subset of this data is available in the component_deltas_latest view, which contains only the deltas for the latest git_sha in each pr, in each component. To get the latest row for the default branch, you can filter this view by pr IS NULL.

Schema

Column	Type	Description
component_id	TEXT	The identifier for the component - e.g. github.com/foo/bar/buz
timestamp	TIMESTAMPTZ	The "committed at" UTC timestamp of the git_sha
git_sha	TEXT	The Git commit SHA of the component JSON
pr	BIGINT	The pull request number if the commit is part of a pull request. Set to NULL for the default branch
collector_name	TEXT	The name of the collector that contributed this delta
collection_timestamp	TIMESTAMPTZ	The UTC timestamp when the collector ran
delta	JSONB	The metadata delta that was contributed by the collector

Notes

• To get the set of deltas for a given component version, you need to filter by component_id, and git_sha. The ordering of these deltas is defined by the collection_timestamp.

• Merging these deltas in the order of collection_timestamp will give you the final component_json object for a given component_id and git_sha that is found in the components view.

• The timestamp column (not to be confused with collection_timestamp) is guaranteed to be the same for a given git_sha of a component_id. This timestamp will also match entries in other views such as components and checks.

Usage example

Retrieve the deltas associated with the latest git_sha for a given component on the default branch.

SELECT *
FROM component_deltas_latest
WHERE component_id = 'github.com/foo/bar/buz'
  AND pr IS NULL
ORDER BY collection_timestamp ASC;