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configs module

  • Module id: configs
  • Package: @open-mercato/core
  • Entity: ModuleConfig (table module_configs)
  • Features: configs.manage (reserved for future UI)

Storage model​

ModuleConfig records are keyed by { module_id, name } and store a JSON payload in value_json. Rows also track created_at/updated_at timestamps so background syncs can detect stale values. The shared cache tag module-config:module:<module_id> keeps lookups fast while allowing targeted invalidation.

packages/core/src/modules/configs/data/entities.ts
@Entity({ tableName: 'module_configs' })
@Unique({ name: 'module_configs_module_name_unique', properties: ['moduleId', 'name'] })
export class ModuleConfig {
  @PrimaryKey({ type: 'uuid', defaultRaw: 'gen_random_uuid()' })
  id!: string

  @Property({ name: 'module_id', type: 'text' })
  moduleId!: string

  @Property({ name: 'name', type: 'text' })
  name!: string

  @Property({ name: 'value_json', type: 'json', nullable: true })
  valueJson!: unknown
}

Runtime helpers​

The DI registrar exposes a singleton moduleConfigService with the following surface:

  • getValue(moduleId, name, { defaultValue }) → fetches and caches the JSON value.
  • setValue(moduleId, name, value) → upserts the record and invalidates cache entries.
  • restoreDefaults([{ moduleId, name, value }], { force }) → seed or reset baseline values.
  • invalidate(moduleId, name?) → drop cache entries for a specific key or the entire module.

Every call automatically resolves the request-scoped EntityManager and the configured cache strategy (memory/Redis/sqlite/JSON). Consumers can safely call these helpers from APIs, subscribers, or CLIs without managing transactions or cache keys manually.

Default seeding & automation​

  • yarn mercato configs restore-defaults seeds module defaults. The command runs automatically during mercato init after database migrations complete.
  • Environment flags can override values. Example: DISABLE_VECTOR_SEARCH_AUTOINDEXING=1 forces the vector.auto_index_enabled toggle off and prevents the API/UI from re-enabling it.
  • Additional defaults can be registered by other modules via restoreDefaults (e.g., inside their CLI bootstrap or migrations).

Usage example: vector search auto-indexing​

The vector module reads moduleConfigService.getValue('vector', 'auto_index_enabled', { defaultValue: true }) inside its subscribers before running expensive embedding work. A backend settings page at /backend/vector-search exposes the toggle through /api/vector/settings, so operators can pause real-time indexing without redeploying the app.