gregawoods/amazon.rake

## readme.md

      
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    Recursively download XSD documents for use with Amazon MWS. These can be used to validate XML documents before posting them to the Amazon Feeds API.
You could schedule this to run occasionally via cron in order to keep your XSD files up to date.
See also:

https://images-na.ssl-images-amazon.com/images/G/01/rainier/help/XML_Documentation_Intl._CB324496426_.pdf
https://developer.amazonservices.com/gp/mws/api.html/137-2810250-4902659?ie=UTF8&group=bde&section=feeds&version=latest

Usage

Files are downloaded to lib/xsd. Modify download_xsd_file to store somewhere else.
rake amazon:xsd


## amazon.rake
require 'nokogiri'

namespace :amazon do
  desc 'Download XSD files recursively'
  task xsd: :environment do
    dest = download_xsd_file(
      'amzn-envelope.xsd',
      'https://images-na.ssl-images-amazon.com/images/G/01/rainier/help/xsd/release_1_9/'
    )
    # Validate schema
    Nokogiri::XML::Schema(File.open(dest))
    puts 'Done!'
  end

  def download_xsd_file(file_name, base_url, downloads: [])
    return if downloads.include?(file_name)

    puts "- downloading #{file_name}..."
    downloads << file_name
    destination = Rails.root.join('lib', 'xsd', file_name)

    File.open(destination, 'w') do |f|
      IO.copy_stream(open(base_url + file_name), f)
    end

    raw_xml = Nokogiri::XML(File.open(destination))
    raw_xml.xpath('//xsd:include').each do |tag|
      file_name = tag.attribute('schemaLocation').value
      download_xsd_file(file_name, base_url, downloads: downloads)
    end

    destination
  end
end
	require 'nokogiri'

	namespace :amazon do
	desc 'Download XSD files recursively'
	task xsd: :environment do
	dest = download_xsd_file(
	'amzn-envelope.xsd',
	'https://images-na.ssl-images-amazon.com/images/G/01/rainier/help/xsd/release_1_9/'
	)
	# Validate schema
	Nokogiri::XML::Schema(File.open(dest))
	puts 'Done!'
	end

	def download_xsd_file(file_name, base_url, downloads: [])
	return if downloads.include?(file_name)

	puts "- downloading #{file_name}..."
	downloads << file_name
	destination = Rails.root.join('lib', 'xsd', file_name)

	File.open(destination, 'w') do \|f\|
	IO.copy_stream(open(base_url + file_name), f)
	end

	raw_xml = Nokogiri::XML(File.open(destination))
	raw_xml.xpath('//xsd:include').each do \|tag\|
	file_name = tag.attribute('schemaLocation').value
	download_xsd_file(file_name, base_url, downloads: downloads)
	end

	destination
	end
	end