Class: Feed::Openai::ListGenerator

Inherits:
BaseService
  • Object
show all
Defined in:
app/services/feed/openai/list_generator.rb

Overview

Pre-generates the OpenAI product feed and stores it in the database for fast retrieval

Constant Summary collapse

BATCH_SIZE = 
200

Instance Method Summary collapse

Instance Method Details

#load_products(catalog, limit: nil, catalog_item_ids: nil) ⇒ Object 



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# File 'app/services/feed/openai/list_generator.rb', line 67

def load_products(catalog, limit: nil, catalog_item_ids: nil)
  scope = product_scope(catalog, catalog_item_ids: catalog_item_ids)
  scope = scope.limit(limit) if limit.present?
  scope.map { |ci| Feed::Openai::OpenaiProductPresenter.new(ci) }.select(&:valid_for_openai?)
end

#process(catalogs: nil, catalog_item_ids: nil, limit: nil, delete_all: nil) ⇒ Object

Main method.

  • catalogs: specify catalogs otherwise will be main catalogs (US and CA)
  • catalog_item_ids: filter by specific catalog_item_ids, e.g you want to update only one product
  • limit: optional limit to number of records to process
  • delete_all: truncate all openai feed records in the catalog, useful for periodic cleanups


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# File 'app/services/feed/openai/list_generator.rb', line 10

def process(catalogs: nil, catalog_item_ids: nil, limit: nil, delete_all: nil)
  require 'activerecord-import/base'
  require 'activerecord-import/active_record/adapters/postgresql_adapter'

  res = { products: 0 }

  catalogs ||= Catalog.for_google_feed
  if delete_all.nil?
    delete_all = catalog_item_ids.present? ? false : catalogs.present?
  end

  # Targeted update: delete specific items and narrow catalog scope before looping
  if catalog_item_ids.present?
    OpenaiFeed.where(catalog_item_id: catalog_item_ids).delete_all
    catalogs = catalogs.joins(:catalog_items).where(catalog_items: { id: catalog_item_ids })
  end

  catalogs.each do |catalog|
    I18n.with_locale catalog.locale_for_catalog do
      logger.info "Processing OpenaiFeed items for catalog #{catalog.id}"

      if delete_all
        logger.info 'Purging OpenaiFeed'
        OpenaiFeed.where(catalog_id: catalog.id).delete_all
      end

      if limit.present?
        # Small scoped query (dev/debug) — simple path, no batching needed
        inserts = load_products(catalog, limit: limit, catalog_item_ids: catalog_item_ids).map do |p|
          logger.info "Generating json data for product #{p.id} mpn:#{p.mpn} upc:#{p.upc}"
          res[:products] += 1
          build_insert(p)
        end
        import_inserts(inserts) if inserts.any?
      else
        # Full catalog run — stream via find_each + flush every BATCH_SIZE to cap RSS
        inserts = []
        product_scope(catalog, catalog_item_ids: catalog_item_ids).find_each(batch_size: BATCH_SIZE) do |ci|
          p = Feed::Openai::OpenaiProductPresenter.new(ci)
          next unless p.valid_for_openai?

          logger.info "Generating json data for product #{p.id} mpn:#{p.mpn} upc:#{p.upc}"
          res[:products] += 1
          inserts << build_insert(p)

          if inserts.size >= BATCH_SIZE
            import_inserts(inserts)
            inserts = []
          end
        end
        import_inserts(inserts) if inserts.any?
      end
    end
  end
  res
end