Add database foreign key between pipelines and builds

1 files changed, 24 insertions, 0 deletions

diff --git a/db/migrate/20180420010016_add_pipeline_build_foreign_key.rb b/db/migrate/20180420010016_add_pipeline_build_foreign_key.rb
new file mode 100644
index 00000000000..385d51b8da6
--- /dev/null
+++ b/db/migrate/20180420010016_add_pipeline_build_foreign_key.rb
@@ -0,0 +1,24 @@
+class AddPipelineBuildForeignKey < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    execute <<~SQL
+      DELETE FROM ci_builds WHERE NOT EXISTS
+        (SELECT true FROM ci_pipelines WHERE ci_pipelines.id = ci_builds.commit_id)
+    SQL
+
+    return if foreign_key_exists?(:ci_builds, :ci_pipelines, column: :commit_id)
+
+    add_concurrent_foreign_key(:ci_builds, :ci_pipelines, column: :commit_id)
+  end
+
+  def down
+    return unless foreign_key_exists?(:ci_builds, :ci_pipelines, column: :commit_id)
+
+    remove_foreign_key(:ci_builds, column: :commit_id)
+  end
+end