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+;;; 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)))
+
+(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)
+ (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))
+ #$(string-append "--host=" host)
+ ;; Perform any database migrations when the
+ ;; service is started
+ "--update-database")
+
+ #:user #$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
+ #$(file-append package
+ "/bin/guix-data-service-process-jobs"))
+ #:user #$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.")))