Christopher Baines
a7d9e15f65
This is the big change needed to allow for parallel revision processing. Previously, a lock was used to prevent this since the parallel transactions could deadlock if each inserted data that the other then went to insert. By defining the order in which inserts happen, both in terms of the order of tables, and the order of rows within the table, this change should guarantee that there won't be deadlocks. I'm also hoping this change will address whatever issue was causing some derivation data to be missing from the database.
51 lines
2 KiB
Scheme
51 lines
2 KiB
Scheme
;;; Guix Data Service -- Information about Guix over time
|
|
;;; Copyright © 2019 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 package-derivation)
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-43)
|
|
#:use-module (ice-9 vlist)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (squee)
|
|
#:use-module (guix-data-service model utils)
|
|
#:use-module (guix-data-service model system)
|
|
#:export (count-packages-derivations-in-revision))
|
|
|
|
(define (count-packages-derivations-in-revision conn commit-hash)
|
|
(define query
|
|
"
|
|
SELECT systems.system, package_derivations.target,
|
|
COUNT(DISTINCT package_derivations.derivation_id)
|
|
FROM package_derivations
|
|
INNER JOIN systems ON package_derivations.system_id = systems.id
|
|
WHERE package_derivations.id IN (
|
|
SELECT guix_revision_package_derivations.package_derivation_id
|
|
FROM guix_revision_package_derivations
|
|
INNER JOIN guix_revisions
|
|
ON guix_revision_package_derivations.revision_id = guix_revisions.id
|
|
WHERE guix_revisions.commit = $1
|
|
)
|
|
GROUP BY systems.system, package_derivations.target
|
|
ORDER BY systems.system DESC, package_derivations.target ASC")
|
|
|
|
(map
|
|
(match-lambda
|
|
((system target count)
|
|
(list system
|
|
target
|
|
(string->number count))))
|
|
(exec-query conn query (list commit-hash))))
|