cbaines/guix-data-service
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Initial commit

Browse source 
This is a service designed to provide information about Guix. At the
moment, this initial prototype gathers up information about packages,
the associated metadata and derivations.

The initial primary use case is to compare two different revisions of
Guix, detecting which packages are new, no longer present, updated or
otherwise different.

It's based on the Mumi project.

[1]: https://git.elephly.net/software/mumi.git
This commit is contained in:
Christopher Baines 2019-02-06 16:14:44 +00:00
commit 5a9262b38d
Signed by: cbaines
GPG key ID: 5E28A33B0B84F577
32 changed files with 9457 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

96
guix-data-service/web/controller.scm Normal file
View file

@ -0,0 +1,96 @@
;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2016, 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; 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 web controller)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (web request)
#:use-module (web uri)
#:use-module (squee)
#:use-module (guix-data-service comparison)
#:use-module (guix-data-service model guix-revision)
#:use-module (guix-data-service web render)
#:use-module (guix-data-service web util)
#:use-module (guix-data-service web view html)
#:export (controller))
(define-syntax-rule (-> target functions ...)
(fold (lambda (f val) (and=> val f))
target
(list functions ...)))
(define (render-with-error-handling page message)
(apply render-html (page))
;; (catch #t
;; (lambda ()
;; (receive (sxml headers)
;; (pretty-print (page))
;; (render-html sxml headers)))
;; (lambda (key . args)
;; (format #t "ERROR: ~a ~a\n"
;; key args)
;; (render-html (error-page message))))
)
(define (controller request body)
(define conn (connect-to-postgres-paramstring "dbname=guix_data_service"))
(match-lambda
((GET)
(apply render-html (index (most-recent-n-guix-revisions conn 10))))
((GET "compare")
(let ((base-commit (-> request
request-uri
uri-query
parse-query-string
(cut assoc-ref <> "base_commit")))
(target-commit (-> request
request-uri
uri-query
parse-query-string
(cut assoc-ref <> "target_commit"))))
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes
(package-differences-data conn
(commit->revision-id conn base-commit)
(commit->revision-id conn target-commit)))))
(let* ((new-packages
(package-data-vhashes->new-packages base-packages-vhash
target-packages-vhash))
(removed-packages
(package-data-vhashes->removed-packages base-packages-vhash
target-packages-vhash))
(version-changes
(package-data-version-changes base-packages-vhash
target-packages-vhash))
(other-changes
(package-data-other-changes base-packages-vhash
target-packages-vhash)))
(apply render-html
(compare base-commit
target-commit
new-packages
removed-packages
version-changes
other-changes))))))
((GET path ...)
(render-static-asset request))))