Class: SpreeCmCommissioner::Exports::OperatorGuestJsonGzip

Inherits:
SpreeCmCommissioner::Export show all
Defined in:
app/models/spree_cm_commissioner/exports/operator_guest_json_gzip.rb

Constant Summary collapse

BATCH_INCLUDES = 
[
  :occupation, :user,
  { check_ins: %i[check_in_by check_in_session], line_item: [:variant, { order: :bill_address }] }
].freeze
RESOURCE_INCLUDES = 
[
  'user',
  'check_ins',
  'check_ins.check_in_by',
  'check_ins.check_in_session',
  'line_item',
  'line_item.order',
  'line_item.order.billing_address',
  'line_item.variant'
].freeze

Instance Method Summary collapse

Methods inherited from SpreeCmCommissioner::Export

#enqueue_export, #exported_file_name, #exported_file_url, #presigned_url_expires_in, #set_uuid

Instance Method Details

#export ⇒ Object

override



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# File 'app/models/spree_cm_commissioner/exports/operator_guest_json_gzip.rb', line 39

def export
  self.track_messages = []
  track_messages << "Export started at #{Time.current.iso8601}"
  update(status: :progress, track_messages: track_messages)

  guests_query = scoped_guests_query
  self.guests_count = guests_query.count(:id)

  track_messages << "Processing #{guests_count} guests in batches"
  update(track_messages: track_messages, guests_count: guests_count)

  # We use 2 temp files to avoid loading everything into memory:
  # - File 1: guest1,guest2,guest3... (just the data array content)
  # - File 2: user1,order1,user2... (just the included array content)
  # Then we merge them into: {"data":[File1],"included":[File2]}
  guests_file = Tempfile.new(['guests', '.json'])
  included_file = Tempfile.new(['included', '.json'])
  output_gz_file = Tempfile.new(['export', '.json.gz'])

  begin
    stream_export_data_and_includes_to_separate_files(guests_query, guests_file, included_file)
    stream_export_merge_and_compress_data_and_includes_to_a_single_file(guests_file, included_file, output_gz_file)
    attach_file_to_record(output_gz_file)
  ensure
    cleanup_temp_files(guests_file, included_file, output_gz_file)
  end
rescue StandardError => e
  CmAppLogger.error(label: "#{self.class.name}#export", data: { export_id: id, error: e.message, backtrace: e.backtrace })

  track_errors = []
  track_errors << "Error: #{e.message} at #{Time.current.iso8601}"
  track_errors << e.backtrace.take(5).join("\n") if e.backtrace.present?

  update(status: :failed, track_errors: track_errors)
end