Move those builders to their own namespace, feedback:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13540099

app/models/ci/build.rb

@@ -349,7 +349,7 @@ module Ci
     def execute_hooks
       return unless project
-      build_data = Gitlab::BuildDataBuilder.build(self)
+      build_data = Gitlab::DataBuilder::BuildDataBuilder.build(self)
       project.execute_hooks(build_data.dup, :build_hooks)
       project.execute_services(build_data.dup, :build_hooks)
       project.running_or_pending_build_count(force: true)
@@ -461,7 +461,7 @@ module Ci
     def build_attributes_from_config
       return {} unless pipeline.config_processor
-      
+
       pipeline.config_processor.build_attributes(name)
     end
   end

app/models/project_services/builds_email_service.rb

@@ -52,7 +52,7 @@ class BuildsEmailService < Service
   def test_data(project = nil, user = nil)
     build = project.builds.last
-    Gitlab::BuildDataBuilder.build(build)
+    Gitlab::DataBuilder::BuildDataBuilder.build(build)
   end
   def fields

app/models/service.rb

@@ -80,7 +80,7 @@ class Service < ActiveRecord::Base
   end
   def test_data(project, user)
-    Gitlab::PushDataBuilder.build_sample(project, user)
+    Gitlab::DataBuilder::PushDataBuilder.build_sample(project, user)
   end
   def event_channel_names

app/services/delete_branch_service.rb

@@ -39,7 +39,7 @@ class DeleteBranchService < BaseService
   end
   def build_push_data(branch)
-    Gitlab::PushDataBuilder
+    Gitlab::DataBuilder::PushDataBuilder
       .build(project, current_user, branch.target.sha, Gitlab::Git::BLANK_SHA, "#{Gitlab::Git::BRANCH_REF_PREFIX}#{branch.name}", [])
   end
 end

app/services/delete_tag_service.rb

@@ -33,7 +33,7 @@ class DeleteTagService < BaseService
   end
   def build_push_data(tag)
-    Gitlab::PushDataBuilder
+    Gitlab::DataBuilder::PushDataBuilder
       .build(project, current_user, tag.target.sha, Gitlab::Git::BLANK_SHA, "#{Gitlab::Git::TAG_REF_PREFIX}#{tag.name}", [])
   end
 end

app/services/git_push_service.rb

@@ -138,12 +138,12 @@ class GitPushService < BaseService
   end
   def build_push_data
-    @push_data ||= Gitlab::PushDataBuilder.
+    @push_data ||= Gitlab::DataBuilder::PushDataBuilder.
       build(@project, current_user, params[:oldrev], params[:newrev], params[:ref], push_commits)
   end
   def build_push_data_system_hook
-    @push_data_system ||= Gitlab::PushDataBuilder.
+    @push_data_system ||= Gitlab::DataBuilder::PushDataBuilder.
       build(@project, current_user, params[:oldrev], params[:newrev], params[:ref], [])
   end

app/services/git_tag_push_service.rb

@@ -34,12 +34,12 @@ class GitTagPushService < BaseService
       end
     end
-    Gitlab::PushDataBuilder.
+    Gitlab::DataBuilder::PushDataBuilder.
       build(project, current_user, params[:oldrev], params[:newrev], params[:ref], commits, message)
   end
   def build_system_push_data
-    Gitlab::PushDataBuilder.
+    Gitlab::DataBuilder::PushDataBuilder.
       build(project, current_user, params[:oldrev], params[:newrev], params[:ref], [], '')
   end
 end

app/services/notes/post_process_service.rb

@@ -16,7 +16,7 @@ module Notes
     end
     def hook_data
-      Gitlab::NoteDataBuilder.build(@note, @note.author)
+      Gitlab::DataBuilder::NoteDataBuilder.build(@note, @note.author)
     end
     def execute_note_hooks

app/services/test_hook_service.rb

 class TestHookService
   def execute(hook, current_user)
-    data = Gitlab::PushDataBuilder.build_sample(hook.project, current_user)
+    data = Gitlab::DataBuilder::PushDataBuilder.
+      build_sample(hook.project, current_user)
     hook.execute(data, 'push_hooks')
   end
 end

lib/gitlab/build_data_builder.rb → lib/gitlab/data_builder/build_data_builder.rb

 module Gitlab
-  class BuildDataBuilder
-    class << self
+  module DataBuilder
+    module BuildDataBuilder
+      module_function
+
       def build(build)
         project = build.project
         commit = build.pipeline

lib/gitlab/note_data_builder.rb → lib/gitlab/data_builder/note_data_builder.rb

 module Gitlab
-  class NoteDataBuilder
-    class << self
+  module DataBuilder
+    module NoteDataBuilder
+      module_function
+
       # Produce a hash of post-receive data
       #
       # For all notes:

lib/gitlab/push_data_builder.rb → lib/gitlab/data_builder/push_data_builder.rb

 module Gitlab
-  class PushDataBuilder
-    class << self
+  module DataBuilder
+    module PushDataBuilder
+      module_function
+
       # Produce a hash of post-receive data
       #
       # data = {

spec/lib/gitlab/build_data_builder_spec.rb → spec/lib/gitlab/data_builder/build_data_builder_spec.rb

 require 'spec_helper'
-describe 'Gitlab::BuildDataBuilder' do
+describe Gitlab::DataBuilder::BuildDataBuilder do
   let(:build) { create(:ci_build) }
   describe '.build' do
     let(:data) do
-      Gitlab::BuildDataBuilder.build(build)
+      Gitlab::DataBuilder::BuildDataBuilder.build(build)
     end
     it { expect(data).to be_a(Hash) }

spec/lib/gitlab/note_data_builder_spec.rb → spec/lib/gitlab/data_builder/note_data_builder_spec.rb

 require 'spec_helper'
-describe 'Gitlab::NoteDataBuilder', lib: true do
+describe Gitlab::DataBuilder::NoteDataBuilder, lib: true do
   let(:project) { create(:project) }
   let(:user) { create(:user) }
-  let(:data) { Gitlab::NoteDataBuilder.build(note, user) }
+  let(:data) { Gitlab::DataBuilder::NoteDataBuilder.build(note, user) }
   let(:fixed_time) { Time.at(1425600000) } # Avoid time precision errors
   before(:each) do

spec/lib/gitlab/push_data_builder_spec.rb → spec/lib/gitlab/data_builder/push_data_builder_spec.rb

 require 'spec_helper'
-describe Gitlab::PushDataBuilder, lib: true do
+describe Gitlab::DataBuilder::PushDataBuilder, lib: true do
   let(:project) { create(:project) }
   let(:user) { create(:user) }

spec/models/project_services/assembla_service_spec.rb

@@ -39,7 +39,8 @@ describe AssemblaService, models: true do
         token: 'verySecret',
         subdomain: 'project_name'
       )
-      @sample_data = Gitlab::PushDataBuilder.build_sample(project, user)
+      @sample_data = Gitlab::DataBuilder::PushDataBuilder.
+        build_sample(project, user)
       @api_url = 'https://atlas.assembla.com/spaces/project_name/github_tool?secret_key=verySecret'
       WebMock.stub_request(:post, @api_url)
     end

spec/models/project_services/builds_email_service_spec.rb

 require 'spec_helper'
 describe BuildsEmailService do
-  let(:data) { Gitlab::BuildDataBuilder.build(create(:ci_build)) }
+  let(:data) do
+    Gitlab::DataBuilder::BuildDataBuilder.build(create(:ci_build))
+  end
   describe 'Validations' do
     context 'when service is active' do
@@ -39,7 +41,7 @@ describe BuildsEmailService do
   describe '#test' do
     it 'sends email' do
-      data = Gitlab::BuildDataBuilder.build(create(:ci_build))
+      data = Gitlab::DataBuilder::BuildDataBuilder.build(create(:ci_build))
       subject.recipients = 'test@gitlab.com'
       expect(BuildEmailWorker).to receive(:perform_async)
@@ -49,7 +51,7 @@ describe BuildsEmailService do
     context 'notify only failed builds is true' do
       it 'sends email' do
-        data = Gitlab::BuildDataBuilder.build(create(:ci_build))
+        data = Gitlab::DataBuilder::BuildDataBuilder.build(create(:ci_build))
         data[:build_status] = "success"
         subject.recipients = 'test@gitlab.com'

spec/models/project_services/drone_ci_service_spec.rb

@@ -84,7 +84,9 @@ describe DroneCiService, models: true do
     include_context :drone_ci_service
     let(:user)    { create(:user, username: 'username') }
-    let(:push_sample_data) { Gitlab::PushDataBuilder.build_sample(project, user) }
+    let(:push_sample_data) do
+      Gitlab::DataBuilder::PushDataBuilder.build_sample(project, user)
+    end
     it do
       service_hook = double

spec/models/project_services/flowdock_service_spec.rb

@@ -52,7 +52,8 @@ describe FlowdockService, models: true do
         service_hook: true,
         token: 'verySecret'
       )
-      @sample_data = Gitlab::PushDataBuilder.build_sample(project, user)
+      @sample_data = Gitlab::DataBuilder::PushDataBuilder.
+        build_sample(project, user)
       @api_url = 'https://api.flowdock.com/v1/messages'
       WebMock.stub_request(:post, @api_url)
     end

spec/models/project_services/gemnasium_service_spec.rb

@@ -55,7 +55,8 @@ describe GemnasiumService, models: true do
         token: 'verySecret',
         api_key: 'GemnasiumUserApiKey'
       )
-      @sample_data = Gitlab::PushDataBuilder.build_sample(project, user)
+      @sample_data = Gitlab::DataBuilder::PushDataBuilder.
+        build_sample(project, user)
     end
     it "should call Gemnasium service" do
       expect(Gemnasium::GitlabService).to receive(:execute).with(an_instance_of(Hash)).once