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118 lines
3.9 KiB
Scheme
118 lines
3.9 KiB
Scheme
;;; Guix Data Service -- Information about Guix over time
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;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
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;;;
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;;; This program is free software: you can redistribute it and/or
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;;; modify it under the terms of the GNU Affero General Public License
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;;; as published by the Free Software Foundation, either version 3 of
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;;; the License, or (at your option) any later version.
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;;;
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;;; This program is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; Affero General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Affero General Public
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;;; License along with this program. If not, see
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;;; <http://www.gnu.org/licenses/>.
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(define-module (guix-data-service model guix-revision)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-19)
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#:use-module (ice-9 match)
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#:use-module (squee)
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#:export (count-guix-revisions
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most-recent-n-guix-revisions
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commit->revision-id
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insert-guix-revision
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guix-commit-exists?
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guix-revision-exists?
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select-guix-revision-for-branch-and-datetime
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guix-revisions-cgit-url-bases))
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(define (count-guix-revisions conn)
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(match (exec-query
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conn
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"SELECT COUNT(*) FROM guix_revisions")
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(((x)) (string->number x))))
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(define (most-recent-n-guix-revisions conn n)
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(exec-query conn "SELECT * FROM guix_revisions ORDER BY id DESC LIMIT 10"))
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(define (commit->revision-id conn commit)
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(match (exec-query
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conn "SELECT id FROM guix_revisions WHERE commit = $1 LIMIT 1"
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(list commit))
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(((id))
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id)
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(() #f)))
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(define (insert-guix-revision conn git-repository-id commit store_path)
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(define insert
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(string-append "INSERT INTO guix_revisions "
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"(git_repository_id, commit, store_path) VALUES "
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"(" git-repository-id ", '"
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commit "', '"
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store_path "') "
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"RETURNING id;"))
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(match (exec-query conn insert)
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(((id)) id)))
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(define (guix-commit-exists? conn commit)
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(define query
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"SELECT EXISTS(SELECT 1 FROM guix_revisions WHERE commit = $1)")
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(let ((result (caar
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(exec-query conn query (list commit)))))
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(string=? result "t")))
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(define (guix-revision-exists? conn git-repository-id commit)
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(define query
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(string-append "SELECT EXISTS("
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"SELECT 1 FROM guix_revisions WHERE "
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"git_repository_id = '" git-repository-id "' "
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"AND commit = '" commit "')"
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";"))
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(let ((result (caar
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(exec-query conn query))))
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(string=? result "t")))
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(define (select-guix-revision-for-branch-and-datetime conn branch datetime)
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(define query
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"
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SELECT guix_revisions.id,
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guix_revisions.commit,
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guix_revisions.store_path,
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guix_revisions.git_repository_id,
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git_branches.datetime
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FROM guix_revisions
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INNER JOIN git_branches
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ON git_branches.commit = guix_revisions.commit
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AND git_branches.git_repository_id = guix_revisions.git_repository_id
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WHERE git_branches.name = $1 AND git_branches.datetime <= $2
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ORDER BY git_branches.datetime DESC
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LIMIT 1")
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(car
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(exec-query conn query (list branch
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(date->string datetime "~1 ~3")))))
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(define (guix-revisions-cgit-url-bases conn guix-revision-ids)
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(map
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car
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(exec-query
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conn
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(simple-format #f "
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SELECT cgit_url_base
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FROM git_repositories
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WHERE cgit_url_base IS NOT NULL AND id IN (
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SELECT git_repository_id
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FROM guix_revisions
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WHERE id IN (VALUES ~A));"
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(string-join
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(map (lambda (id)
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(string-append "(" id ")"))
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guix-revision-ids)
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",")))))
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