Implement support for CI variables of type file

Add env_var and file as supported types for CI variables. Variables of
type file expose to users existing gitlab-runner behaviour - save
variable value into a temp file and set the path to this file in an ENV
var named after the variable key.

Resolves https://gitlab.com/gitlab-org/gitlab-ce/issues/46806.

1 files changed, 17 insertions, 0 deletions

diff --git a/db/migrate/20190416213631_add_variable_type_to_ci_pipeline_schedule_variables.rb b/db/migrate/20190416213631_add_variable_type_to_ci_pipeline_schedule_variables.rb
new file mode 100644
index 00000000000..3079b2afd9c
--- /dev/null
+++ b/db/migrate/20190416213631_add_variable_type_to_ci_pipeline_schedule_variables.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddVariableTypeToCiPipelineScheduleVariables < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+  ENV_VAR_VARIABLE_TYPE = 1
+
+  def up
+    add_column_with_default(:ci_pipeline_schedule_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE)
+  end
+
+  def down
+    remove_column(:ci_pipeline_schedule_variables, :variable_type)
+  end
+end