Class: NetworkFacade::REST::Client

Inherits:
Base::Client show all
Defined in:
lib/network-facade/rest.rb

Instance Method Summary collapse

Methods inherited from Base::Client

#__read__, #__write__, inherited, uri=

Constructor Details

#initialize(options = {}) ⇒ Client

Returns a new instance of Client.



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# File 'lib/network-facade/rest.rb', line 25

def initialize(options = {})
	super
	@cookies = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/network-facade/rest.rb', line 30

def method_missing(name, *args)

	# Build query string
	params = args.first || {}
	raise "Params must be an Hash table" unless params.is_a? Hash
	qs = params.keys.collect do |k|
		"#{k}=#{CGI::escape(params[k].to_s)}"
	end.join('&')

	# Cutom method mapping defined ?
	if @options[:mapping] and @options[:mapping][name]
		@uri.path = @options[:mapping][name]
	end

	format = @options[:append_slash] ? '%s/?%s' : '%s?%s'
	Net::HTTP.start(@uri.host, @uri.port) do |http|

		# Build header fields
		header = @options[:header] || {}
		header['User-Agent'] = @options[:user_agent] || NetworkFacade::NAME + '/' + NetworkFacade::VERSION
		unless @cookies.empty?
			header['Cookie'] = @cookies.keys.collect do |k|
				"#{k}=#{@cookies[k]}"
			end.join('; ')
		end

		# Build request path
		if @options[:method] == :path
			path = format % [ "#{@uri.path}/#{name}", qs ]
		elsif @options[:method] == :param and @options[:method_param]
			path = format % [ @uri.path, "#{qs}&#{@options[:method_param]}=#{CGI::escape(name.to_s)}" ]
		else
			path = format % [ @uri.path, qs ]
		end

		# POST or GET
		if @options[:post].is_a? Array and @options[:post].include? name
			req = Net::HTTP::Post.new(path, header)
			req.form_data = params
		else
			req = Net::HTTP::Get.new(path, header)
			NetworkFacade.log(:info, "GET #{req.path}")
		end
		res = http.request(req)

		# Remember cookies
		CGI::Cookie::parse(res['set-cookie']).each do |k,v|
			next if k == 'path' or k == 'expires'
			@cookies[k] = v.value
		end

		# Return the correct data
		case res.code
		when '200'
			case res.content_type
			when /xml/
				if defined? XML
					parser = XML::Parser.new
					parser.string = res.body
					data = parser.parse
				else
					data = REXML::Document.new(res.body)
				end
			when /json/
				if defined? JSON
					data = JSON.parse res.body
				else
					data = res.body
				end
			when /php/
				#TODO: http://php.net/serialize, http://hurring.com/code/perl/serialize/
				raise "Not implemented yet"
			else
				data = res.body
			end
		when /3\d\d/
			# FIXME
			raise "Redirection not supported yet"
		else
			NetworkFacade.log(:error, "An error occured when calling #{name} (returned code = #{res.code})")
		end
		
		# Return the header if asked
		@options[:header] ? [res.to_hash, data] : data
	end
end