mirror of
git://git.savannah.gnu.org/guix/data-service.git
synced 2023-12-14 03:23:03 +01:00
Actually add the system module
This commit is contained in:
parent
869d2522e5
commit
c252d1cb30
57
guix-data-service/model/system.scm
Normal file
57
guix-data-service/model/system.scm
Normal file
|
@ -0,0 +1,57 @@
|
|||
;;; Guix Data Service -- Information about Guix over time
|
||||
;;; Copyright © 2019, 2020, 2021 Christopher Baines <mail@cbaines.net>
|
||||
;;;
|
||||
;;; This program 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.
|
||||
;;;
|
||||
;;; This program 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 this program. If not, see
|
||||
;;; <http://www.gnu.org/licenses/>.
|
||||
|
||||
(define-module (guix-data-service model system)
|
||||
#:use-module (srfi srfi-1)
|
||||
#:use-module (ice-9 vlist)
|
||||
#:use-module (ice-9 match)
|
||||
#:use-module (squee)
|
||||
#:use-module (guix-data-service model utils)
|
||||
#:export (system->system-id
|
||||
list-systems))
|
||||
|
||||
(define system->system-id-cache
|
||||
(make-hash-table))
|
||||
|
||||
(define systems-cache #f)
|
||||
|
||||
(define (system->system-id conn system)
|
||||
(let ((cached-value (hash-ref system->system-id-cache
|
||||
system)))
|
||||
(or cached-value
|
||||
(match (insert-missing-data-and-return-all-ids
|
||||
conn
|
||||
"systems"
|
||||
'(system)
|
||||
`((,system)))
|
||||
((id)
|
||||
(hash-set! system->system-id-cache
|
||||
system
|
||||
id)
|
||||
(set! systems-cache #f)
|
||||
id)))))
|
||||
|
||||
(define (list-systems conn)
|
||||
(if systems-cache
|
||||
systems-cache
|
||||
(let ((systems
|
||||
(map car
|
||||
(exec-query
|
||||
conn
|
||||
"SELECT system FROM systems ORDER BY system"))))
|
||||
(set! systems-cache systems)
|
||||
systems)))
|
Loading…
Reference in a new issue