Class: Arcus::Api::Request

Inherits:
Object
  • Object
show all
Defined in:
lib/arcus/api.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command_name, params, callbacks) ⇒ Request

Returns a new instance of Request.



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# File 'lib/arcus/api.rb', line 54

def initialize(command_name, params, callbacks)
  @command_name = command_name
  @params = params
  @api_uri = Arcus::Api.settings.api_uri
  @api_key = Arcus::Api.settings.api_key
  @api_secret = Arcus::Api.settings.api_secret
  @callbacks = callbacks
end

Instance Attribute Details

#api_key ⇒ Object

Returns the value of attribute api_key.



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# File 'lib/arcus/api.rb', line 52

def api_key
  @api_key
end

#api_secret ⇒ Object

Returns the value of attribute api_secret.



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# File 'lib/arcus/api.rb', line 52

def api_secret
  @api_secret
end

#api_uri ⇒ Object

Returns the value of attribute api_uri.



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# File 'lib/arcus/api.rb', line 52

def api_uri
  @api_uri
end

#callbacks ⇒ Object

Returns the value of attribute callbacks.



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# File 'lib/arcus/api.rb', line 52

def callbacks
  @callbacks
end

#command_name ⇒ Object

Returns the value of attribute command_name.



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# File 'lib/arcus/api.rb', line 52

def command_name
  @command_name
end

#params ⇒ Object

Returns the value of attribute params.



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# File 'lib/arcus/api.rb', line 52

def params
  @params
end

Instance Method Details

#fetch(response_type = :object) ⇒ Object 



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# File 'lib/arcus/api.rb', line 89

def fetch(response_type = :object)
  @params[:response] =
      case response_type
        when :json, :yaml, :prettyjson, :object
          "json"
        when :xml, :prettyxml
          "xml"
      end
  http = Net::HTTP.new(@api_uri.host, @api_uri.port)
  http.read_timeout = 30 
  http.open_timeout = 30 

  if @api_uri.scheme == "https"
    http.use_ssl = true
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  end
  params = @params.merge({:command => @command_name})
  req_url = @api_uri.path + "?" + generate_params_str(params, @api_key, @api_secret)
  Arcus.log.debug { "Sending: #{req_url}" } if Arcus::Api.settings.verbose
  response = begin
    http.get(req_url)
  rescue Timeout::Error => e
    e.instance_eval do
      class << self
        attr_accessor :api_uri
      end
    end
    e.api_uri = @api_uri
    raise e
  end
  Arcus.log.debug { "Received: #{response.body}" } if Arcus::Api.settings.verbose
  response.instance_eval do
    class << self
      attr_accessor :response_type
    end

    def body
      case @response_type
        when :yaml
          YAML::dump(JSON.parse(super))
        when :prettyjson
          JSON.pretty_generate(JSON.parse(super))
        when :prettyxml
          Nokogiri::XML(super, &:noblanks)
        when :xml, :json
          super
        when :object
          JSON.parse(super)
      end
    end
  end
  response.response_type = response_type
  if response.is_a?(Net::HTTPSuccess)
    callbacks[:success].call(response) if callbacks[:success]
  else
    callbacks[:failure].call(response) if callbacks[:failure]
  end
  response.body if response.is_a?(Net::HTTPSuccess)
end

#generate_params_str(params, api_key = nil, api_secret = nil) ⇒ Object 



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# File 'lib/arcus/api.rb', line 81

def generate_params_str(params, api_key = nil, api_secret = nil)
  if api_key && api_secret
    params[:apiKey] = @api_key
    params[:signature] = generate_signature(params, api_secret)
  end
  parameterize(params)
end

#generate_signature(params, api_secret) ⇒ Object 



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# File 'lib/arcus/api.rb', line 63

def generate_signature(params, api_secret)
  sorted_params = params.map { |k, v| [k, CGI.escape(v.to_s).gsub('+', '%20').downcase] }.sort_by { |key, value| key.to_s }
  data = parameterize(sorted_params, false).downcase
  hash = OpenSSL::HMAC.digest('sha1', api_secret, data)
  Base64.encode64(hash).chomp
end

#parameterize(params, escape = true) ⇒ Object 



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# File 'lib/arcus/api.rb', line 70

def parameterize(params, escape=true)
  params = params.collect do |k, v|
    if escape
      "#{CGI.escape(k.to_s)}=#{CGI.escape(v.to_s)}"
    else
      "#{k}=#{v}"
    end
  end
  params.join('&')
end