diff options
Diffstat (limited to 'app/services/govuk_guix/update_gcroots_directory.rb')
-rw-r--r-- | app/services/govuk_guix/update_gcroots_directory.rb | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/app/services/govuk_guix/update_gcroots_directory.rb b/app/services/govuk_guix/update_gcroots_directory.rb new file mode 100644 index 0000000..97fe703 --- /dev/null +++ b/app/services/govuk_guix/update_gcroots_directory.rb @@ -0,0 +1,62 @@ +# GOV.UK Mini Environment Admin +# Copyright © 2018 Christopher Baines <mail@cbaines.net> +# +# This file is part of the GOV.UK Mini Environment Admin. +# +# The GOV.UK Mini Environment Admin is free software: you can +# redistribute it and/or modify it under the terms of the GNU Affero +# General Public License as published by the Free Software Foundation, +# either version 3 of the License, or (at your option) any later +# version. +# +# The GOV.UK Mini Environment Admin is distributed in the hope that it +# will be useful, but WITHOUT ANY WARRANTY; without even the implied +# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the GNU Affero General Public License for more details. +# +# You should have received a copy of the GNU Affero General Public +# License along with the GOV.UK Mini Environment Admin. If not, see +# <http://www.gnu.org/licenses/>. + +module GovukGuix::UpdateGcrootsDirectory + extend ::ShellUtils + + DIRECTORY = '/var/guix/gcroots/govuk-mini-environment-admin' + + def self.set_in_use_store_paths(store_paths, options = {}) + current_store_paths = list_store_paths(options) + + (current_store_paths - store_paths).each do |store_path| + remove_store_path(store_path, options) + end + + (store_paths - current_store_paths).each do |store_path| + add_store_path(store_path, options) + end + end + + def self.add_store_path(store_path, options = {}) + run_command( + 'ln', '-s', + store_path, + File.join(DIRECTORY, store_path['/gnu/store/'.length..-1]), + run_remotely_on_host: options[:run_remotely_on_host] + ) + end + + def self.remove_store_path(store_path, options = {}) + run_command( + 'rm', File.join(DIRECTORY, store_path['/gnu/store/'.length..-1]), + run_remotely_on_host: options[:run_remotely_on_host] + ) + end + + def self.list_store_paths(options = {}) + run_command( + 'ls', '-1', DIRECTORY, + run_remotely_on_host: options[:run_remotely_on_host] + ).map do |store_path_suffix| + "/gnu/store/#{store_path_suffix.strip}" + end + end +end |