using Faraday with EM-Synchrony & EM-Http

faraday-em-http.rb

require 'faraday'
require 'net/http'
require 'pp'

# Repos: 
# https://github.com/technoweenie/faraday
# https://github.com/pengwynn/faraday_middleware

# Blog posts: 
# http://adventuresincoding.com/2010/09/writing-modular-http-client-code-with-faraday
# http://wynnnetherland.com/projects/faraday-middleware

conn = Faraday::Connection.new(:url => 'http://api.postrank.com') do |builder|
  builder.use Faraday::Adapter::EMSynchrony # make http request with eventmachine and synchrony
  builder.use Faraday::Response::Yajl       # parse body with yajl
end

resp = conn.get do |req| 
  req.url "/v2/feed/info?appkey=demokey&format=json&id=igvita.com"
end

pp resp
puts

# Set EM-Synchrony to be default drive + parse JSON responses

Faraday.default_connection = Faraday::Connection.new do |builder|
  builder.use Faraday::Adapter::EMSynchrony 
  builder.use Faraday::Response::Yajl
end

resp = Faraday.get "http://api.postrank.com/v2/feed/info?appkey=demokey&format=json&id=igvita.com"
pp resp

If using nokogiri would setting the content type to xml and using a post request with your xml document be sufficient to get this working.