change.rb in jets-1.5.10

- old
+ new
@@ -1,114 +1,12 @@
 # Detects route changes
 class Jets::Resource::ApiGateway::RestApi::Routes
-  class Change < Base
+  class Change
+    autoload :Base, 'jets/resource/api_gateway/rest_api/routes/change/base'
+    autoload :To, 'jets/resource/api_gateway/rest_api/routes/change/to'
+    autoload :Variable, 'jets/resource/api_gateway/rest_api/routes/change/variable'
+
     def changed?
-      deployed_routes.each do |deployed_route|
-        new_route = find_comparable_route(deployed_route)
-        if new_route && new_route.to != deployed_route.to
-          # change in already deployed route has been detected, requires bluegreen deploy
-          return true
-        end
-      end
-      false # Reaching here means no routes have been changed in a way that requires a bluegreen deploy
+      To.changed? || Variable.changed? || ENV['JETS_REPLACE_API']
     end
-
-    # Build up deployed routes from the existing CloudFormation resources.
-    def deployed_routes
-      routes = []
-
-      resources, position = [], true
-      while position
-        position = nil if position == true # start of loop
-        resp = apigateway.get_resources(
-          rest_api_id: rest_api_id,
-          position: position,
-        )
-        resources += resp.items
-        position = resp.position
-      end
-
-      resources.each do |resource|
-        resource_methods = resource.resource_methods
-        next if resource_methods.nil?
-
-        resource_methods.each do |http_verb, resource_method|
-          # puts "#{http_verb} #{resource.path} | resource.id #{resource.id}"
-          # puts to(resource.id, http_verb)
-
-          # Test changing config.cors and CloudFormation does an in-place update
-          # on the resource. So no need to do bluegreen deployments for OPTIONS.
-          next if http_verb == "OPTIONS"
-
-          path = recreate_path(resource.path)
-          method = http_verb.downcase.to_sym
-          to = to(resource.id, http_verb)
-          route = Jets::Route.new(path: path, method: method, to: to)
-          routes << route
-        end
-      end
-      routes
-    end
-    memoize :deployed_routes
-
-    # Find a route that has the same path and method. This is a comparable route
-    # Then we will compare the to or controller action to see if an already
-    # deployed route has been changed.
-    def find_comparable_route(deployed_route)
-      new_routes.find do |new_route|
-        new_route.path == deployed_route.path &&
-        new_route.method == deployed_route.method
-      end
-    end
-
-    def recreate_path(path)
-      path = path.gsub(%r{^/},'')
-      path = path.sub(/{(.*)\+}/, '*\1')
-      path.sub(/{(.*)}/, ':\1')
-    end
-
-    def to(resource_id, http_method)
-      uri = method_uri(resource_id, http_method)
-      recreate_to(uri) unless uri.nil?
-    end
-
-    def method_uri(resource_id, http_method)
-      resp = apigateway.get_method(
-        rest_api_id: rest_api_id,
-        resource_id: resource_id,
-        http_method: http_method
-      )
-      resp.method_integration.uri
-    end
-
-    # Parses method uri and recreates a Route to argument.
-    # So:
-    #   "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:112233445566:function:demo-test-posts_controller-new/invocations"
-    # Returns:
-    #   posts#new
-    def recreate_to(method_uri)
-      md = method_uri.match(/function:(.*)\//)
-      function_name = md[1] # IE: demo-dev-posts_controller-new
-      controller_action = function_name.sub("#{Jets.project_namespace}-", '')
-      md = controller_action.match(/(.*)_controller-(.*)/)
-      controller = md[1]
-      controller = controller.gsub('-','/')
-      action = md[2]
-      "#{controller}##{action}" # IE: posts#new
-    end
-
-    # Duplicated in rest_api/change_detection.rb, base_path/role.rb, rest_api/routes.rb
-    def rest_api_id
-      stack_name = Jets::Naming.parent_stack_name
-      return default unless stack_exists?(stack_name)
-
-      stack = cfn.describe_stacks(stack_name: stack_name).stacks.first
-
-      api_gateway_stack_arn = lookup(stack[:outputs], "ApiGateway")
-
-      # resources = cfn.describe_stack_resources(stack_name: api_gateway_stack_arn).stack_resources
-      stack = cfn.describe_stacks(stack_name: api_gateway_stack_arn).stacks.first
-      lookup(stack[:outputs], "RestApi") # rest_api_id
-    end
-    memoize :rest_api_id
   end
 end