zitadel/internal/domain/count_trigger.go

package domain

//go:generate enumer -type CountParentType -transform lower -trimprefix CountParentType -sql
type CountParentType int

const (
	CountParentTypeInstance CountParentType = iota
	CountParentTypeOrganization
)
feat(projections): resource counters (#9979) # Which Problems Are Solved Add the ability to keep track of the current counts of projection resources. We want to prevent calling `SELECT COUNT(*)` on tables, as that forces a full scan and sudden spikes of DB resource uses. # How the Problems Are Solved - A resource_counts table is added - Triggers that increment and decrement the counted values on inserts and deletes - Triggers that delete all counts of a table when the source table is TRUNCATEd. This is not in the business logic, but prevents wrong counts in case someone want to force a re-projection. - Triggers that delete all counts if the parent resource is deleted - Script to pre-populate the resource_counts table when a new source table is added. The triggers are reusable for any type of resource, in case we choose to add more in the future. Counts are aggregated by a given parent. Currently only `instance` and `organization` are defined as possible parent. This can later be extended to other types, such as `project`, should the need arise. I deliberately chose to use `parent_id` to distinguish from the de-factor `resource_owner` which is usually an organization ID. For example: - For users the parent is an organization and the `parent_id` matches `resource_owner`. - For organizations the parent is an instance, but the `resource_owner` is the `org_id`. In this case the `parent_id` is the `instance_id`. - Applications would have a similar problem, where the parent is a project, but the `resource_owner` is the `org_id` # Additional Context Closes https://github.com/zitadel/zitadel/issues/9957 2025-06-03 17:15:30 +03:00			`package domain`

			`//go:generate enumer -type CountParentType -transform lower -trimprefix CountParentType -sql`
			`type CountParentType int`

			`const (`
			`CountParentTypeInstance CountParentType = iota`
			`CountParentTypeOrganization`
			`)`