39 lines
921 B
Ruby
39 lines
921 B
Ruby
|
class AddUniqueConstraintToCiVariables < ActiveRecord::Migration
|
||
|
include Gitlab::Database::MigrationHelpers
|
||
|
|
||
|
DOWNTIME = false
|
||
|
|
||
|
disable_ddl_transaction!
|
||
|
|
||
|
def up
|
||
|
unless this_index_exists?
|
||
|
add_concurrent_index(:ci_variables, columns, name: index_name, unique: true)
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def down
|
||
|
if this_index_exists?
|
||
|
if Gitlab::Database.mysql? && !index_exists?(:ci_variables, :project_id)
|
||
|
# Need to add this index for MySQL project_id foreign key constraint
|
||
|
add_concurrent_index(:ci_variables, :project_id)
|
||
|
end
|
||
|
|
||
|
remove_concurrent_index(:ci_variables, columns, name: index_name)
|
||
|
end
|
||
|
end
|
||
|
|
||
|
private
|
||
|
|
||
|
def this_index_exists?
|
||
|
index_exists?(:ci_variables, columns, name: index_name)
|
||
|
end
|
||
|
|
||
|
def columns
|
||
|
@columns ||= [:project_id, :key, :environment_scope]
|
||
|
end
|
||
|
|
||
|
def index_name
|
||
|
'index_ci_variables_on_project_id_and_key_and_environment_scope'
|
||
|
end
|
||
|
end
|