Class: Shipping::ItemPackingRefreshHandler

Inherits:
ApplicationJob
  • Object
show all
Includes:
RailsEventStore::AsyncHandler
Defined in:
app/subscribers/shipping/item_packing_refresh_handler.rb

Overview

Refreshes the from_item Packing record for an Item whose shipping
dimensions just changed.

Subscribes to: Events::ItemShippingDimensionsChanged

WHY async: the prior synchronous after_save callback added 5-20 ms to
every Item save by running Shipping::ItemMd5Extractor (Packing.upsert
plus a HABTM item_ids |= write). EDI feeds, bulk supplier imports,
and admin spreadsheet pastes save items in tight loops, so that latency
accumulates. The Packing row is a lookup cache, not transactional data,
so a few seconds of staleness is acceptable.

Skip semantics carry over from the old callback at Item#set_packaged_items_md5_hash:

  • run only when no from_item Packing exists yet, OR an existing one
    is invalid, OR boxes actually changed. The publisher gates on
    any_box_changed?; this handler re-checks packings.from_item so
    re-runs from out-of-order delivery / queue retries are safe.

See Also:

Instance Method Summary collapse

Instance Method Details

#perform(event) ⇒ Object 



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# File 'app/subscribers/shipping/item_packing_refresh_handler.rb', line 28

def perform(event)
  item = Item.find_by(id: event.data[:item_id])
  return unless item
  return unless item.is_goods?
  return unless item.box1_defined?

  Shipping::ItemMd5Extractor.new.process(item)
rescue StandardError => e
  ErrorReporting.error(e)
  raise
end