Support building all pipeline resource before saving

app/models/ci/pipeline.rb

@@ -476,17 +476,13 @@ module Ci
     # TODO specs
     #
     def protected_ref?
-      strong_memoize(:protected_ref) do
-        project.protected_for?(ref)
-      end
+      strong_memoize(:protected_ref) { project.protected_for?(ref) }
     end
 
     # TODO specs
     #
     def legacy_trigger
-      strong_memoize(:legacy_trigger) do
-        trigger_requests.first
-      end
+      strong_memoize(:legacy_trigger) { trigger_requests.first }
     end
 
     def predefined_variables

lib/gitlab/ci/pipeline/seed/base.rb

@@ -10,6 +10,10 @@ module Gitlab
           def excluded?
             raise NotImplementedError
           end
+
+          def to_resource
+            raise NotImplementedError
+          end
         end
       end
     end

lib/gitlab/ci/pipeline/seed/build.rb

@@ -15,11 +15,18 @@ module Gitlab
           end
 
           def attributes
-            @attributes.merge(project: @pipeline.project,
-                              ref: @pipeline.ref,
-                              tag: @pipeline.tag,
-                              trigger_request: @pipeline.legacy_trigger,
-                              protected: @pipeline.protected_ref?)
+            @attributes.merge(
+              pipeline: @pipeline,
+              project: @pipeline.project,
+              ref: @pipeline.ref,
+              tag: @pipeline.tag,
+              trigger_request: @pipeline.legacy_trigger,
+              protected: @pipeline.protected_ref?
+            )
+          end
+
+          def to_resource
+            ::Ci::Build.new(attributes)
           end
         end
       end

lib/gitlab/ci/pipeline/seed/stage.rb

@@ -3,41 +3,45 @@ module Gitlab
     module Pipeline
       module Seed
         class Stage < Seed::Base
-          attr_reader :pipeline
-
-          delegate :project, to: :pipeline
-          delegate :size, to: :@builds
+          delegate :size, to: :@seeds
 
           def initialize(pipeline, name, builds)
             @pipeline = pipeline
             @name = name
 
-            @builds = builds.map do |attributes|
-              Seed::Build.new(pipeline, attributes)
+            @seeds = builds.map do |attributes|
+              Seed::Build.new(@pipeline, attributes)
             end
           end
 
           def user=(current_user)
-            @builds.each { |seed| seed.user = current_user }
+            @seeds.each { |seed| seed.user = current_user }
           end
 
           def attributes
-            { name: @name, project: project }
+            { name: @name, pipeline: @pipeline, project: @pipeline.project }
           end
 
-          # TODO decouple from Seed::Build
+          # TODO decouple
+          #
           def builds_attributes
-            @builds.map(&:attributes)
+            @seeds.map(&:attributes)
+          end
+
+          def to_resource
+            ::Ci::Stage.new(attributes)
           end
 
           def create!
-            pipeline.stages.build(attributes).tap do |stage|
-              builds_attributes.each do |build_attributes|
-                stage.builds.build(build_attributes).tap do |build|
-                  build.pipeline = pipeline
+            to_resource.tap do |stage|
+              @seeds.each do |seed|
+                seed.to_resource.tap do |build|
+                  stage.builds << build
                 end
               end
 
+              @pipeline.stages << stage
+
               stage.save!
 
               stage.builds.each do |build|
@@ -45,11 +49,6 @@ module Gitlab
               end
             end
           end
-
-          private
-
-          def protected_ref?
-          end
         end
       end
     end