Interacting with 3rd party services

Lightning talk at RuLu 2014

Transcript

1. Interacting with
   3rd party web services
   Keep it simple and lightweight
   RuLu 2014, June 19-20
   

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2. Request
   • query parameters
   • JSON or XML body
   • SOAP envelope
   

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3. Response
   • JSON or XML body
   • SOAP envelope
   

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4. Mapping to Ruby objects
   • JSON to Hash : easy
   • XML to Nokogiri : doable
   • SOAP to anything : attrocious
   

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5. Too big?
   Inadequate?
   

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6. Custom mapping
   with ROXML
   

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7. require 'roxml'
   module Mapping
   class Base
   include ROXML
   xml_convention :capitalize
   end
   class Room < Base
   xml_reader :total_price, :from => '@TotalPrice', :as => Float
   xml_reader :nb_rooms, :from => '@NbRooms', :as => Integer
   def breakfast_included?
   %w(B D P A).include?(meals.to_s)
   end
   end
   class Hotel < Base
   xml_reader :native_id, :from => "@DistNum"
   xml_reader :name, :from => "@Name"
   xml_reader :rooms, :as => [Room]
   end
   class FB_MultirateRS < Base
   xml_reader :hotels, :as => [Hotel], :from => 'Hotels/Hotel'
   end
   end
   

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8. Simplify
   

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9. JSON Request
   free with Ruby Hash
   

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10. XML Request
    • raw String
    • ERB templates
    • XML builders
    

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11. Response
    • Mappers
    • Models
    

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12. Thank
    You
    with a special to Fabien Catteau
    

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13. jeremy.lecour@gmail.com
    @jlecour
    jeremy.wordpress.com
    github.com/jlecour
    

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