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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; GNU Guix 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu services cuirass)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (gnu packages admin)
#:autoload (gnu packages ci) (cuirass)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:export (<cuirass-configuration>
cuirass-configuration
cuirass-configuration?
cuirass-service-type
cuirass-service))
;;;; Commentary:
;;;
;;; This module implements a service that to run instances of Cuirass, a
;;; continuous integration tool.
;;;
;;;; Code:
(define-record-type* <cuirass-configuration>
cuirass-configuration make-cuirass-configuration
cuirass-configuration?
(log-file cuirass-configuration-log-file ;string
(default "/var/log/cuirass.log"))
(cache-directory cuirass-configuration-cache-directory ;string (dir-name)
(default "/var/cache/cuirass"))
(user cuirass-configuration-user ;string
(default "cuirass"))
(group cuirass-configuration-group ;string
(default "cuirass"))
(interval cuirass-configuration-interval ;integer (seconds)
(default 60))
(database cuirass-configuration-database ;string (file-name)
(default "/var/run/cuirass/cuirass.db"))
(specifications cuirass-configuration-specifications ;specification-alist
(default '()))
(use-substitutes? cuirass-configuration-use-substitutes? ;boolean
(default #f))
(one-shot? cuirass-configuration-one-shot? ;boolean
(default #f)))
(define (cuirass-shepherd-service config)
"Return a <shepherd-service> for the Cuirass service with CONFIG."
(and
(cuirass-configuration? config)
(let ((cache-directory (cuirass-configuration-cache-directory config))
(log-file (cuirass-configuration-log-file config))
(user (cuirass-configuration-user config))
(group (cuirass-configuration-group config))
(interval (cuirass-configuration-interval config))
(database (cuirass-configuration-database config))
(specs (cuirass-configuration-specifications config))
(use-substitutes? (cuirass-configuration-use-substitutes? config))
(one-shot? (cuirass-configuration-one-shot? config)))
(list (shepherd-service
(documentation "Run Cuirass.")
(provision '(cuirass))
(requirement '(guix-daemon))
(start #~(make-forkexec-constructor
(list (string-append #$cuirass "/bin/cuirass")
"--cache-directory" #$cache-directory
#$@(if (null? specs)
'()
(let ((str (format #f "'~S" specs)))
(list "--specifications"
(plain-file "specs.scm" str))))
"--database" #$database
"--interval" #$(number->string interval)
#$@(if use-substitutes? '("--use-substitutes") '())
#$@(if one-shot? '("--one-shot") '()))
#:user #$user
#:group #$group
#:log-file #$log-file))
(stop #~(make-kill-destructor)))))))
(define (cuirass-account config)
"Return the user accounts and user groups for CONFIG."
(let ((cuirass-user (cuirass-configuration-user config))
(cuirass-group (cuirass-configuration-group config)))
(list (user-group
(name cuirass-group)
(system? #t))
(user-account
(name cuirass-user)
(group cuirass-group)
(system? #t)
(comment "Cuirass privilege separation user")
(home-directory (string-append "/var/run/" cuirass-user))
(shell #~(string-append #$shadow "/sbin/nologin"))))))
(define (cuirass-activation config)
"Return the activation code for CONFIG."
(let ((cache (cuirass-configuration-cache-directory config))
(user (cuirass-configuration-user config))
(group (cuirass-configuration-group config)))
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils))
(mkdir-p #$cache)
(let ((uid (passwd:uid (getpw #$user)))
(gid (group:gid (getgr #$group))))
(chown #$cache uid gid))))))
(define cuirass-service-type
(service-type
(name 'cuirass)
(extensions
(list
(service-extension activation-service-type cuirass-activation)
(service-extension shepherd-root-service-type cuirass-shepherd-service)
(service-extension account-service-type cuirass-account)))))
(define* (cuirass-service #:key (config (cuirass-configuration)))
"Return a service that runs cuirass according to CONFIG."
(service cuirass-service-type config))
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