Class: Edi::Amazon::ShippingLabelPurchaser

Inherits:
MarketplaceLabelPurchaser show all
Defined in:
app/services/edi/amazon/shipping_label_purchaser.rb

Overview

Service for purchasing shipping labels via Amazon Buy Shipping API (Shipping V2)

This service handles the full label lifecycle:

  • Purchase a label using a rate from Amazon Buy Shipping
  • Attach the inline label PDF to the shipment
  • Populate tracking information
  • Cancel/void labels via Amazon's cancel endpoint

Amazon Buy Shipping returns label data inline during purchaseShipment,
unlike Walmart SWW which requires a separate download step.

Examples:

purchaser = Edi::Amazon::ShippingLabelPurchaser.new(shipment)
result = purchaser.purchase_label(rate)
if result.success
  puts "Tracking: #{result.tracking_number}"
end

Instance Attribute Summary collapse

Attributes inherited from MarketplaceLabelPurchaser

#delivery, #logger, #order, #shipment

Instance Method Summary collapse

Methods inherited from MarketplaceLabelPurchaser

#attach_label_pdf, #failure_result, for_delivery, for_order, for_shipment, #map_carrier_name, marketplace_carrier?, marketplace_name, #success_result, supports_marketplace_labels?

Constructor Details

#initialize(shipment, options = {}) ⇒ ShippingLabelPurchaser

Returns a new instance of ShippingLabelPurchaser.



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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 25

def initialize(shipment, options = {})
  super
  @orchestrator = Edi::Amazon::Orchestrator.new(order.edi_orchestrator_partner.to_sym)
end

Instance Attribute Details

#orchestrator ⇒ Object (readonly)

Returns the value of attribute orchestrator.



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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 23

def orchestrator
  @orchestrator
end

Instance Method Details

#marketplace_name ⇒ String

Returns:

  • (String) 


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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 31

def marketplace_name
  'Amazon'
end

#move_early_label_to_shipment ⇒ Upload?

Move early label PDF from order uploads to shipment uploads

Returns:



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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 183

def move_early_label_to_shipment
  early_upload = order.early_label_upload
  return nil unless early_upload

  early_upload.update!(
    resource_type: 'Shipment',
    resource_id: shipment.id,
    category: 'ship_label_pdf'
  )
  early_upload
rescue StandardError => e
  logger.warn("[AMZ-BS LabelPurchaser] Failed to move early label upload: #{e.message}")
  nil
end

#purchase_label(rate) ⇒ PurchaseResult

Purchase a shipping label using an Amazon Buy Shipping rate

Parameters:

  • rate (Hash) —

    The rate hash from Shipping::AmazonSeller.find_rates
    Must include :amz_request_token and :amz_rate_id (or :rate_data with these)

Returns:



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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 40

def purchase_label(rate)
  logger.info("[AMZ-BS LabelPurchaser] Purchasing label for shipment #{shipment.id}, order: #{order.edi_po_number}")

  # Idempotency: if this shipment already has an Amazon shipment ID, a previous
  # purchase succeeded but post-purchase steps (label attach, state transition) may
  # have failed. Reuse the existing purchase instead of buying a second label.
  if shipment.amz_shipment_id.present?
    logger.info("[AMZ-BS LabelPurchaser] Shipment #{shipment.id} already has amz_shipment_id=#{shipment.amz_shipment_id}, recovering")
    return recover_existing_purchase
  end

  if order.has_early_purchased_label? && order.early_label_carrier.present?
    return use_early_purchased_label(rate)
  end

  rate = rate.respond_to?(:with_indifferent_access) ? rate.with_indifferent_access : rate
  rate_data = (rate[:rate_data] || rate)
  rate_data = rate_data.respond_to?(:with_indifferent_access) ? rate_data.with_indifferent_access : rate_data
  request_token = rate_data[:amz_request_token] || rate[:amz_request_token]
  rate_id = rate_data[:amz_rate_id] || rate[:amz_rate_id] || rate[:rate_id]

  return failure_result('Rate missing request_token (token may have expired, re-fetch rates)') unless request_token.present?
  return failure_result("Rate missing rate_id: #{rate.inspect}") unless rate_id.present?

  shipper = build_amazon_shipper
  label_opts = {
    request_token: request_token,
    rate_id: rate_id,
    carrier_id: rate_data[:amz_carrier_id] || rate[:amz_carrier_id],
    carrier_name: rate_data[:amz_carrier_name] || rate[:amz_carrier_name],
    service_name: rate_data[:amz_service_name] || rate[:amz_service_name],
    amz_supported_document_specifications: rate_data[:amz_supported_document_specifications] || rate[:amz_supported_document_specifications],
    available_value_added_services: rate_data[:available_value_added_services] ||
      rate[:available_value_added_services] ||
      rate_data.dig(:raw, :availableValueAddedServiceGroups) ||
      rate_data.dig('raw', 'availableValueAddedServiceGroups')
  }

  per_pkg = rate_data[:per_package_rates]
  if per_pkg.is_a?(Array) && per_pkg.size > 1
    label_opts[:per_package_rates] = per_pkg.map { |pr| pr.respond_to?(:symbolize_keys) ? pr.symbolize_keys : pr }
  end

  label_result = shipper.create_label(label_opts)

  unless label_result[:success]
    return failure_result(label_result[:error])
  end

  update_shipment_tracking(label_result[:tracking_number], label_result[:carrier], label_result[:shipment_id])
  store_amz_metadata(label_result)

  label_upload = attach_purchased_label(label_result)
  attach_additional_labels(label_result[:additional_labels]) if label_result[:additional_labels].present?

  success_result(
    label_id: label_result[:shipment_id],
    tracking_number: label_result[:tracking_number],
    carrier: label_result[:carrier],
    service_type: label_result[:service_name],
    label_upload: label_upload
  )
rescue StandardError => e
  logger.error("[AMZ-BS LabelPurchaser] Error: #{e.message}")
  logger.error(e.backtrace.first(5).join("\n"))
  failure_result(e.message)
end

#use_early_purchased_label(rate) ⇒ PurchaseResult

Use an early-purchased label instead of purchasing a new one
Moves the label from the order to the shipment

Parameters:

  • rate (Hash) —

    The rate hash (used for logging)

Returns:



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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 154

def use_early_purchased_label(rate)
  logger.info("[AMZ-BS LabelPurchaser] Using early-purchased label for shipment #{shipment.id}")

  tracking_number = order.early_label_tracking_number
  carrier = order.early_label_carrier
  label_id = order.early_label_sww_label_id # reuses same generic field
  service_type = order.early_label_service_type

  label_upload = move_early_label_to_shipment

  update_shipment_tracking(tracking_number, carrier, label_id)
  store_amz_metadata_from_early_label(tracking_number, carrier, service_type, label_id)

  order.update!(purchase_label_early: false)

  success_result(
    label_id: label_id,
    tracking_number: tracking_number,
    carrier: carrier,
    service_type: service_type,
    label_upload: label_upload
  )
rescue StandardError => e
  logger.error("[AMZ-BS LabelPurchaser] Error using early-purchased label: #{e.message}")
  failure_result("Failed to use early-purchased label: #{e.message}. Please try purchasing a new label.")
end

#validate_order! ⇒ Object (protected)

Raises:

  • (ArgumentError) 


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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 200

def validate_order!
  super
  raise ArgumentError, 'Shipment is not for an Amazon marketplace order' unless order.edi_orchestrator_partner&.start_with?('amazon_seller')
end

#void_label ⇒ Hash

Cancel a previously purchased Amazon Buy Shipping label
Amazon uses the shipment_id to cancel (not carrier + tracking like Walmart)

Returns:

  • (Hash) —

    Result with :success and :error keys



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# File 'app/services/edi/amazon/shipping_label_purchaser.rb', line 112

def void_label
  amz_shipment_id = shipment.amz_shipment_id

  unless amz_shipment_id.present?
    logger.warn("[AMZ-BS LabelPurchaser] No amz_shipment_id on shipment #{shipment.id} — clearing all label fields")
    shipment.update(
      tracking_number: nil,
      carrier: nil,
      amz_shipment_id: nil,
      amz_metadata: nil
    )
    return { success: true, error: nil }
  end

  logger.info("[AMZ-BS LabelPurchaser] Canceling shipment #{amz_shipment_id} for shipment #{shipment.id}")

  amz_client = ShipWithAmazon.new(orchestrator)
  result = amz_client.cancel_shipment(amz_shipment_id)

  unless result.success
    return { success: false, error: result.error }
  end

  cancel_additional_package_shipments(amz_client)

  shipment.update(
    tracking_number: nil,
    carrier: nil,
    amz_shipment_id: nil,
    amz_metadata: nil
  )
  { success: true, error: nil }
rescue StandardError => e
  logger.error("[AMZ-BS LabelPurchaser] Void error: #{e.message}")
  { success: false, error: e.message }
end