A device drawn on three canvases was three independent copies of the same
facts. Point every node at the Device Inventory row it draws, and let that
row own what the device *is* — the node keeps only how it is drawn.
- nodes.device_id -> device_inventory.id, ON DELETE SET NULL. NULL for
canvas furniture (group / groupRect / text), which describes nothing
physical. Deleting a node never deletes the row.
- services/inventory_sync holds the shared rules: matching by ieee > ip >
mac (per token, so 10.0.0.4 never matches 10.0.0.40), a property union on
key, a service union on (port, protocol, name), and the backfill that
links every pre-existing node.
- The backfill is non-destructive by construction: it writes device_id and
fills the row, and deletes nothing. Nodes are visited oldest-edit-first,
so where two canvases disagree on a scalar the most recently edited wins,
while properties and services stay unioned — nothing any canvas recorded
is lost. A second boot finds nothing to do.
- The wire shape does not change: GET /canvas hydrates the device fields
from the row, and a save routes them back to it. Editing a node's IP on
one canvas now shows on every other canvas holding that device.
- approve / bulk-approve set device_id instead of owning a copy, and a new
canvas node joins (or mints) its row. Rows minted this way are tagged
with a new `canvas` discovery source and get their own inventory filter.
- DetailPanel offers "Open in inventory"; standalone, which has no
inventory, is not offered it.
test_racks' "reports what the canvas node knows" seeded a second inventory
row for a host that already had one — a state a node create can no longer
produce. Its seeding order is swapped so the node links to the row; every
assertion is unchanged.
ha-relevant: yes
Pouzor
e53197d2cb