diff options
Diffstat (limited to 'actionservice/lib/action_service/api/action_controller.rb')
-rw-r--r-- | actionservice/lib/action_service/api/action_controller.rb | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/actionservice/lib/action_service/api/action_controller.rb b/actionservice/lib/action_service/api/action_controller.rb new file mode 100644 index 0000000000..7ea0a0d3bd --- /dev/null +++ b/actionservice/lib/action_service/api/action_controller.rb @@ -0,0 +1,97 @@ +module ActionService # :nodoc: + module API # :nodoc: + module ActionController # :nodoc: + def self.append_features(base) # :nodoc: + base.class_eval do + class << self + alias_method :inherited_without_api, :inherited + alias_method :service_api_without_require, :service_api + end + end + base.extend(ClassMethods) + end + + module ClassMethods + # Creates a _protected_ factory method with the given + # +name+. This method will create a +protocol+ client connected + # to the given endpoint URL. + # + # ==== Example + # + # class MyController < ActionController::Base + # client_api :blogger, :xmlrpc, "http://blogger.com/myblog/api/RPC2", :handler_name => 'blogger' + # end + # + # In this example, a protected method named <tt>blogger</tt> will + # now exist on the controller, and calling it will return the + # XML-RPC client object for working with that remote service. + # + # The same rules as ActionService::API::Base#service_api are + # used to retrieve the API definition with the given +name+. + # + # +options+ is the set of protocol client specific options, + # see the protocol client class for details. + # + # If your API definition does not exist on the load path + # with the correct rules for it to be found, you can + # pass through the API definition class in +options+, using + # a key of <tt>:api</tt> + def client_api(name, protocol, endpoint_uri, options={}) + unless method_defined?(name) + api_klass = options.delete(:api) || require_api(name) + class_eval do + define_method(name) do + probe_protocol_client(api_klass, protocol, endpoint_uri, options) + end + protected name + end + end + end + + def service_api(definition=nil) # :nodoc: + return service_api_without_require if definition.nil? + case definition + when String, Symbol + klass = require_api(definition) + else + klass = definition + end + service_api_without_require(klass) + end + + def require_api(name) # :nodoc: + case name + when String, Symbol + file_name = name.to_s.underscore + "_api" + class_name = file_name.camelize + class_names = [class_name, class_name.sub(/Api$/, 'API')] + begin + require_dependency(file_name) + rescue LoadError => load_error + requiree = / -- (.*?)(\.rb)?$/.match(load_error).to_a[1] + raise LoadError, requiree == file_name ? "Missing API definition file in apis/#{file_name}.rb" : "Can't load file: #{requiree}" + end + klass = nil + class_names.each do |name| + klass = name.constantize rescue nil + break unless klass.nil? + end + unless klass + raise(NameError, "neither #{class_names[0]} or #{class_names[1]} found") + end + klass + else + raise(ArgumentError, "expected String or Symbol argument") + end + end + + private + def inherited(child) + inherited_without_api(child) + child.service_api(child.controller_path) + rescue Exception => e + end + end + end + end +end |