InventoryChangedEvent

EventType: INVENTORY_CHANGEDDomain: inventory Broker subject: progress.notification.inventory

Updates the is_in_position quantity for a product at a position by applying a signed quantity_change. Inserts a new record if none exists, otherwise updates the existing one. Used as a child event by MovementCompletedEvent for all movement types.

Trigger

Triggered by: POST /event (universal event dispatcher)

Spawned as a child event by MovementCompletedEvent for each position touched by a movement in backend/api/events/inventory/movement_completed.py.

Preconditions

• Position identified by info.position_key exists
• Product identified by info.product_key exists

State Changes (Transaction)

Collections: Inherited from BaseInventoryEvent.get_tx_collections()

• is_in_position record upserted: quantity adjusted by quantity_change (negative values reduce stock)

Side Effects (post_processing)

Inherits post_processing() from BaseInventoryEvent:

• Publishes to progress.notification.inventory

InfoModel Fields

Field	Type	Description
position_key	str	ArangoDB key of the storage position
product_key	str	ArangoDB key of the product
serial_key	str | None	Serial key if this is a serial-tracked item
quantity_change	float	Signed quantity delta (positive = increase, negative = decrease)

Related Events

None.

Source

InventoryChangedEvent on GitHub