guix-play/gnu/services/guix.scm
Christopher Baines d8ab68b929
services: guix-data-service: Allow passing extra options.
This is so that the options supported by the service configuration don't have
to always be changed. Generally though all options should be explicitly
supported and documented, so this is mostly to facilitate experimentation.

* gnu/services/guix.scm (<guix-data-service-configuration>): Add extra-options
and extra-process-jobs-options to the record type.
(guix-data-service-shepherd-services): Handle these new configuration record
fields.
* doc/guix.texi (Guix Data Service): Document these new options.
2020-03-08 23:35:03 +00:00

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Scheme

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; 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 guix)
#:use-module (ice-9 match)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module ((gnu packages base)
#:select (glibc-utf8-locales))
#:use-module (gnu packages admin)
#:use-module (gnu packages web)
#:use-module (gnu services)
#:use-module (gnu services base)
#:use-module (gnu services admin)
#:use-module (gnu services shepherd)
#:use-module (gnu services getmail)
#:use-module (gnu system shadow)
#:export (<guix-data-service-configuration>
guix-data-service-configuration
guix-data-service-configuration?
guix-data-service-package
guix-data-service-user
guix-data-service-group
guix-data-service-port
guix-data-service-host
guix-data-service-getmail-idle-mailboxes
guix-data-service-commits-getmail-retriever-configuration
guix-data-service-type))
;;;; Commentary:
;;;
;;; This module implements a service that to run instances of the Guix Data
;;; Service, which provides data about Guix over time.
;;;
;;;; Code:
(define-record-type* <guix-data-service-configuration>
guix-data-service-configuration make-guix-data-service-configuration
guix-data-service-configuration?
(package guix-data-service-package
(default guix-data-service))
(user guix-data-service-configuration-user
(default "guix-data-service"))
(group guix-data-service-configuration-group
(default "guix-data-service"))
(port guix-data-service-port
(default 8765))
(host guix-data-service-host
(default "127.0.0.1"))
(getmail-idle-mailboxes
guix-data-service-getmail-idle-mailboxes
(default #f))
(commits-getmail-retriever-configuration
guix-data-service-commits-getmail-retriever-configuration
(default #f))
(extra-options guix-data-service-extra-options
(default '()))
(extra-process-jobs-options
guix-data-service-extra-process-jobs-options
(default '())))
(define (guix-data-service-profile-packages config)
"Return the guix-data-service package, this will populate the
ca-certificates.crt file in the system profile."
(list
(guix-data-service-package config)))
(define (guix-data-service-shepherd-services config)
(match-record config <guix-data-service-configuration>
(package user group port host extra-options extra-process-jobs-options)
(list
(shepherd-service
(documentation "Guix Data Service web server")
(provision '(guix-data-service))
(requirement '(postgres networking))
(start #~(make-forkexec-constructor
(list #$(file-append package
"/bin/guix-data-service")
"--pid-file=/var/run/guix-data-service/pid"
#$(string-append "--port=" (number->string port))
#$(string-append "--host=" host)
;; Perform any database migrations when the
;; service is started
"--update-database"
#$@extra-options)
#:user #$user
#:group #$group
#:pid-file "/var/run/guix-data-service/pid"
;; Allow time for migrations to run
#:pid-file-timeout 60
#:environment-variables
`(,(string-append
"GUIX_LOCPATH=" #$glibc-utf8-locales "/lib/locale")
"LC_ALL=en_US.utf8")
#:log-file "/var/log/guix-data-service/web.log"))
(stop #~(make-kill-destructor)))
(shepherd-service
(documentation "Guix Data Service process jobs")
(provision '(guix-data-service-process-jobs))
(requirement '(postgres
networking
;; Require guix-data-service, as that the database
;; migrations are handled through this service
guix-data-service))
(start #~(make-forkexec-constructor
(list
#$(file-append package
"/bin/guix-data-service-process-jobs")
#$@extra-process-jobs-options)
#:user #$user
#:group #$group
#:environment-variables
`("HOME=/var/lib/guix-data-service"
"GIT_SSL_CAINFO=/etc/ssl/certs/ca-certificates.crt"
,(string-append
"GUIX_LOCPATH=" #$glibc-utf8-locales "/lib/locale")
"LC_ALL=en_US.utf8")
#:log-file "/var/log/guix-data-service/process-jobs.log"))
(stop #~(make-kill-destructor))))))
(define (guix-data-service-activation config)
#~(begin
(use-modules (guix build utils))
(define %user (getpw "guix-data-service"))
(chmod "/var/lib/guix-data-service" #o755)
(mkdir-p "/var/log/guix-data-service")
;; Allow writing the PID file
(mkdir-p "/var/run/guix-data-service")
(chown "/var/run/guix-data-service"
(passwd:uid %user)
(passwd:gid %user))))
(define (guix-data-service-account config)
(match-record config <guix-data-service-configuration>
(user group)
(list (user-group
(name group)
(system? #t))
(user-account
(name user)
(group group)
(system? #t)
(comment "Guix Data Service user")
(home-directory "/var/lib/guix-data-service")
(shell (file-append shadow "/sbin/nologin"))))))
(define (guix-data-service-getmail-configuration config)
(match config
(($ <guix-data-service-configuration> package user group
port host
#f #f)
'())
(($ <guix-data-service-configuration> package user group
port host
getmail-idle-mailboxes
commits-getmail-retriever-configuration)
(list
(getmail-configuration
(name 'guix-data-service)
(user user)
(group group)
(directory "/var/lib/getmail/guix-data-service")
(rcfile
(getmail-configuration-file
(retriever commits-getmail-retriever-configuration)
(destination
(getmail-destination-configuration
(type "MDA_external")
(path (file-append
package
"/bin/guix-data-service-process-branch-updated-email"))))
(options
(getmail-options-configuration
(read-all #f)
(delivered-to #f)
(received #f)))))
(idle getmail-idle-mailboxes))))))
(define guix-data-service-type
(service-type
(name 'guix-data-service)
(extensions
(list
(service-extension profile-service-type
guix-data-service-profile-packages)
(service-extension shepherd-root-service-type
guix-data-service-shepherd-services)
(service-extension activation-service-type
guix-data-service-activation)
(service-extension account-service-type
guix-data-service-account)
(service-extension getmail-service-type
guix-data-service-getmail-configuration)))
(default-value
(guix-data-service-configuration))
(description
"Run an instance of the Guix Data Service.")))