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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Danny Milosavljevic <dannym@scratchpost.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 docker)
#:use-module (gnu services)
#:use-module (gnu services configuration)
#:use-module (gnu services base)
#:use-module (gnu services dbus)
#:use-module (gnu services shepherd)
#:use-module (gnu system shadow)
#:use-module (gnu packages docker)
#:use-module (guix records)
#:use-module (guix gexp)
#:use-module (guix packages)
#:export (docker-configuration
docker-service-type))
(define-configuration docker-configuration
(docker
(package docker)
"Docker daemon package.")
(containerd
(package containerd)
"containerd package."))
(define %docker-accounts
(list (user-group (name "docker") (system? #t))))
(define (%containerd-activation config)
(let ((state-dir "/var/lib/containerd"))
#~(begin
(use-modules (guix build utils))
(mkdir-p #$state-dir))))
(define (%docker-activation config)
(%containerd-activation config)
(let ((state-dir "/var/lib/docker"))
#~(begin
(use-modules (guix build utils))
(mkdir-p #$state-dir))))
(define (containerd-shepherd-service config)
(let* ((package (docker-configuration-containerd config)))
(shepherd-service
(documentation "containerd daemon.")
(provision '(containerd))
(start #~(make-forkexec-constructor
(list (string-append #$package "/bin/containerd"))
#:log-file "/var/log/containerd.log"))
(stop #~(make-kill-destructor)))))
(define (docker-shepherd-service config)
(let* ((docker (docker-configuration-docker config)))
(shepherd-service
(documentation "Docker daemon.")
(provision '(dockerd))
(requirement '(containerd))
(start #~(make-forkexec-constructor
(list (string-append #$docker "/bin/dockerd")
"-p" "/var/run/docker.pid")
#:pid-file "/var/run/docker.pid"
#:log-file "/var/log/docker.log"))
(stop #~(make-kill-destructor)))))
(define docker-service-type
(service-type (name 'docker)
(description "Provide capability to run Docker application
bundles in Docker containers.")
(extensions
(list
(service-extension activation-service-type
%docker-activation)
(service-extension shepherd-root-service-type
(lambda args
(list (apply containerd-shepherd-service args)
(apply docker-shepherd-service args))))
(service-extension account-service-type
(const %docker-accounts))))
(default-value (docker-configuration))))
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