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97 lines
3.3 KiB
97 lines
3.3 KiB
module Exports |
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class XmlExportService |
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include Exports::LettingsLogExportConstants |
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include CollectionTimeHelper |
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def initialize(storage_service, start_time, logger = Rails.logger) |
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@storage_service = storage_service |
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@logger = logger |
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@start_time = start_time |
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end |
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private |
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def build_export_run(collection, base_number, full_update, year = nil) |
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@logger.info("Building export run for #{[collection, year].join(' ')}") |
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previous_exports_with_data = Export.where(collection:, year:, empty_export: false) |
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increment_number = previous_exports_with_data.where(base_number:).maximum(:increment_number) || 1 |
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if full_update |
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base_number += 1 if Export.any? # Only increment when it's not the first run |
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increment_number = 1 |
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else |
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increment_number += 1 |
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end |
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if previous_exports_with_data.empty? |
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return Export.new(collection:, year:, base_number:, started_at: @start_time) |
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end |
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Export.new(collection:, year:, started_at: @start_time, base_number:, increment_number:) |
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end |
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def write_export_archive(export, year, recent_export, full_update) |
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archive = get_archive_name(year, export.base_number, export.increment_number) |
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initial_count = retrieve_resources(recent_export, full_update, year).count |
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@logger.info("Creating #{archive} - #{initial_count} resources") |
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return {} if initial_count.zero? |
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zip_file = Zip::File.open_buffer(StringIO.new) |
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part_number = 1 |
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last_processed_marker = nil |
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count_after_export = 0 |
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loop do |
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slice = if last_processed_marker.present? |
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retrieve_resources(recent_export, full_update, year) |
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.where("created_at > ?", last_processed_marker) |
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.order(:created_at) |
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.limit(MAX_XML_RECORDS).to_a |
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else |
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retrieve_resources(recent_export, full_update, year) |
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.order(:created_at) |
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.limit(MAX_XML_RECORDS).to_a |
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end |
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break if slice.empty? |
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data_xml = build_export_xml(slice) |
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part_number_str = "pt#{part_number.to_s.rjust(3, '0')}" |
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zip_file.add("#{archive}_#{part_number_str}.xml", data_xml) |
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part_number += 1 |
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last_processed_marker = slice.last.created_at |
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count_after_export += slice.count |
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@logger.info("Added #{archive}_#{part_number_str}.xml") |
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end |
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manifest_xml = build_manifest_xml(count_after_export) |
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zip_file.add("manifest.xml", manifest_xml) |
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# Required by S3 to avoid Aws::S3::Errors::BadDigest |
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zip_io = zip_file.write_buffer |
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zip_io.rewind |
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@logger.info("Writing #{archive}.zip") |
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@storage_service.write_file("#{archive}.zip", zip_io) |
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{ archive => Time.zone.now } |
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end |
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def xml_doc_to_temp_file(xml_doc) |
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file = Tempfile.new |
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xml_doc.write_xml_to(file, encoding: "UTF-8") |
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file.rewind |
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file |
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end |
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def build_manifest_xml(record_number) |
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doc = Nokogiri::XML("<report/>") |
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doc.at("report") << doc.create_element("form-data-summary") |
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doc.at("form-data-summary") << doc.create_element("records") |
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doc.at("records") << doc.create_element("count-of-records", record_number) |
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xml_doc_to_temp_file(doc) |
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end |
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end |
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end
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