Webservice proxy

gistfile1.rb

# =============
# Without proxy
# =============

require 'soap_client'

class Webservice
  
  def initialize()
    @client = SoapClient.new('http://my.api.com/endpoint')
  end

  def call_remote(method_name, params = {})
    response = @client.call(method_name, params)
    return parse_response(response)
  end
  
  def parse_response
    # ...
  end
end


service = Webservice.new

service.call_remote('get_user', {:id => 'foo'})
# => {:id => 'foo', :name => 'Frank Underwood'}



# ===========
# With proxy
# ===========

require 'soap_client'

class Webservice
  
  class Proxy
    def initialize(webservice)
      @webservice = webservice
    end
 
    def method_missing(method_name, *args)
      @webservice.remote_call(method_name, args)
    end
  end
  
  attr_reader :proxy
  
  def initialize()
    @proxy = Proxy.new(self)
    @client = SoapClient.new('http://my.api.com/endpoint')
  end
 
  def call_remote(method_name, params = {})
    response = @client.call(method_name, params)
    if response.status == 404
      raise NoMethodError, "undefined endpoint `#{method_name}' for client #{@client}"
    end
    return parse_response(response)
  end
  
  def parse_response
    # ...
  end
end
 
 
service = Webservice.new
 
service.proxy.get_user(:id => 'foo')
# => {:id => 'foo', :name => 'Frank Underwood'}
 
service.proxy.foobar('baz')
# => NoMethodError: undefined method `foobar' for #<SoapClient:http://my.api.com/endpoint>