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;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2020 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 data-deletion)
#:use-module (squee)
#:use-module (guix-data-service database)
#:export (delete-data-for-branch))
(define (delete-data-for-branch conn git-repository-id branch-name)
(define commits
(map car
(exec-query conn
"
SELECT commit
FROM git_branches
WHERE git_repository_id = $1 AND name = $2"
(list (number->string git-repository-id)
branch-name))))
(with-postgresql-transaction
conn
(lambda (conn)
(exec-query
conn
(simple-format
#f
"
DELETE FROM git_branches
WHERE git_repository_id = ~A AND
name = '~A' AND
commit IN (~A)"
git-repository-id
branch-name
(string-join
(map (lambda (commit)
(string-append "'" commit "'"))
commits)
", ")))
(for-each
(lambda (table)
(exec-query
conn
(simple-format
#f
"
DELETE FROM ~A
WHERE branch_name = $1 AND git_repository_id = $2"
table)
(list branch-name
(number->string git-repository-id))))
'("package_versions_by_guix_revision_range"
"package_derivations_by_guix_revision_range"))
(for-each
(lambda (table)
(exec-query
conn
(string-append
"
DELETE FROM " table "
WHERE job_id IN (
SELECT id
FROM load_new_guix_revision_jobs
WHERE git_repository_id = " (number->string git-repository-id) " AND
commit IN ("
(string-join
(map (lambda (commit)
(string-append "'" commit "'"))
commits)
", ")
")
)")))
'("load_new_guix_revision_job_events"
"load_new_guix_revision_job_logs"))
(exec-query
conn
(string-append
"
DELETE FROM load_new_guix_revision_jobs
WHERE git_repository_id = " (number->string git-repository-id) " AND
commit IN ("
(string-join
(map (lambda (commit)
(string-append "'" commit "'"))
commits)
", ")
")"))
(let ((guix-revision-ids
(map
car
(exec-query
conn
(string-append
"
SELECT guix_revisions.id
FROM (VALUES "
(string-join
(map (lambda (commit)
(string-append "('" commit "')"))
commits)
", ")
") AS commits
INNER JOIN guix_revisions
ON guix_revisions.commit = commits.column1
WHERE guix_revisions.git_repository_id = "
(number->string git-repository-id) " AND
commits.column1 NOT IN (
SELECT commit
FROM git_branches
)")))))
(unless (null? guix-revision-ids)
(for-each
(lambda (table)
(exec-query
conn
(simple-format
#f
"
DELETE FROM ~A WHERE ~A IN (VALUES ~A)"
table
(if (string=? table
"guix_revision_package_derivations")
"revision_id"
"guix_revision_id")
(string-join
(map (lambda (guix-revision-id)
(string-append "(" guix-revision-id ")"))
guix-revision-ids)
", "))))
'("channel_instances"
"guix_revision_channel_news_entries"
"guix_revision_lint_checkers"
"guix_revision_lint_warnings"
"guix_revision_package_derivations"
"guix_revision_system_test_derivations"))
(exec-query
conn
(string-append
"
DELETE FROM guix_revisions
WHERE id IN ("
(string-join guix-revision-ids ", ")
")")))))))
(with-postgresql-connection "foo" (lambda (conn) (for-each (lambda (branch-name) (delete-data-for-branch conn 1 branch-name)) (map car (exec-query conn "SELECT DISTINCT name FROM git_branches WHERE git_repository_id = 1 AND name != 'master'")))))
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