Merge branch 'store-variables-and-when-in-builds-table' into 'master'

Store when and yaml variables in builds table

## What does this MR do?
Stores `when` and `yaml_variables` in `ci_builds` table.

## Why was this MR needed?
This is done in order to simplify the code responsible for creating a pipeline builds.

## What are the relevant issue numbers?
This made as a pre-step for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5295.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5296

2 files changed, 12 insertions, 26 deletions

diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index b24527247e0..ffac3a22efc 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -5,6 +5,7 @@ module Ci
     belongs_to :erased_by, class_name: 'User'
 
     serialize :options
+    serialize :yaml_variables
 
     validates :coverage, numericality: true, allow_blank: true
     validates_presence_of :ref
@@ -52,6 +53,8 @@ module Ci
         new_build.stage = build.stage
         new_build.stage_idx = build.stage_idx
         new_build.trigger_request = build.trigger_request
+        new_build.yaml_variables = build.yaml_variables
+        new_build.when = build.when
         new_build.user = user
         new_build.environment = build.environment
         new_build.save
@@ -118,7 +121,12 @@ module Ci
     end
 
     def variables
-      predefined_variables + yaml_variables + project_variables + trigger_variables
+      variables = []
+      variables += predefined_variables
+      variables += yaml_variables if yaml_variables
+      variables += project_variables
+      variables += trigger_variables
+      variables
     end
 
     def merge_request
@@ -395,30 +403,6 @@ module Ci
       self.update(erased_by: user, erased_at: Time.now, artifacts_expire_at: nil)
     end
 
-    def yaml_variables
-      global_yaml_variables + job_yaml_variables
-    end
-
-    def global_yaml_variables
-      if pipeline.config_processor
-        pipeline.config_processor.global_variables.map do |key, value|
-          { key: key, value: value, public: true }
-        end
-      else
-        []
-      end
-    end
-
-    def job_yaml_variables
-      if pipeline.config_processor
-        pipeline.config_processor.job_variables(name).map do |key, value|
-          { key: key, value: value, public: true }
-        end
-      else
-        []
-      end
-    end
-
     def project_variables
       project.variables.map do |variable|
         { key: variable.key, value: variable.value, public: false }
diff --git a/app/services/ci/create_builds_service.rb b/app/services/ci/create_builds_service.rb
index 2dcb052d274..3b21f0acb96 100644
--- a/app/services/ci/create_builds_service.rb
+++ b/app/services/ci/create_builds_service.rb
@@ -36,7 +36,9 @@ module Ci
                            :allow_failure,
                            :stage,
                            :stage_idx,
-                           :environment)
+                           :environment,
+                           :when,
+                           :yaml_variables)
 
         build_attrs.merge!(pipeline: @pipeline,
                            ref: @pipeline.ref,