Add config_options|variables to BuildMetadatakamil-refactor-ci-builds-v5

These are data columns that store runtime configuration
of build needed to execute it on runner and within pipeline.

The definition of this data is that once used, and when no longer
needed (due to retry capability) they can be freely removed.

They use `jsonb` on PostgreSQL, and `text` on MySQL (due to lacking
support for json datatype on old enough version).

1 files changed, 34 insertions, 0 deletions

diff --git a/lib/serializers/json.rb b/lib/serializers/json.rb
new file mode 100644
index 00000000000..93cb192087a
--- /dev/null
+++ b/lib/serializers/json.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+module Serializers
+  # This serializer exports data as JSON,
+  # it is designed to be used with interwork compatibility between MySQL and PostgreSQL
+  # implementations, as used version of MySQL does not support native json type
+  #
+  # Secondly, the loader makes the resulting hash to have deep indifferent access
+  class JSON
+    class << self
+      def dump(obj)
+        # MySQL stores data as text
+        # look at ./config/initializers/ar_mysql_jsonb_support.rb
+        if Gitlab::Database.mysql?
+          obj = ActiveSupport::JSON.encode(obj)
+        end
+
+        obj
+      end
+
+      def load(data)
+        return if data.nil?
+
+        # On MySQL we store data as text
+        # look at ./config/initializers/ar_mysql_jsonb_support.rb
+        if Gitlab::Database.mysql?
+          data = ActiveSupport::JSON.decode(data)
+        end
+
+        Gitlab::Utils.deep_indifferent_access(data)
+      end
+    end
+  end
+end