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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2024 Giacomo Leidi <goodoldpaul@autistici.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 home services containers)
#:use-module (guix gexp)
#:use-module (guix packages)
#:use-module (gnu packages docker)
#:use-module (gnu services configuration)
#:use-module (gnu home services)
#:use-module (ice-9 match)
#:use-module (ice-9 string-fun)
#:export (docker-cli-configuration
docker-cli-configuration?
docker-cli-configuration-fields
docker-cli-configuration-docker-cli
docker-cli-configuration-creds-store
docker-cli-configuration-cli-plugins
home-docker-cli-service-type
home-docker-cli-configuration-file
docker-cli-configuration->json-fields))
;; Turn field names, which are Scheme symbols into strings
;; cli-plugins-extra-dirs -> cliPluginsExtraDirs
(define (format-name name)
(define without-dashes (string-replace-substring (symbol->string name) "-" " "))
(define splitted (string-split without-dashes #\space))
(string-replace-substring
(apply string-append
`(,(car splitted)
,@(map string-capitalize (cdr splitted))))
" " ""))
(define (serialize-json-value name value)
#~(begin
(use-modules (ice-9 format))
(format #f "\"~a\": ~a" #$(format-name name) #$value)))
(define (serialize-json-list values)
#~(string-append "["
(string-join
(map (lambda (s) (string-append "\"" s "\""))
(list #$@values))
", ")
"]"))
(define (serialize-string field-name value)
(serialize-json-value field-name (string-append "\"" value "\"")))
(define (serialize-maybe-string field-name value)
(if (maybe-value-set? value)
(serialize-string field-name value)
'()))
(define (serialize-list-of-strings field-name value)
(serialize-json-value field-name (serialize-json-list value)))
(define (serialize-list-of-docker-cli-plugins value)
(serialize-json-value 'cli-plugins-extra-dirs
(serialize-json-list
(map (lambda (p)
(file-append p "/libexec/docker/cli-plugins"))
value))))
(define list-of-strings?
(list-of string?))
(define list-of-docker-cli-plugins?
(list-of package?))
(define-maybe string)
(define-configuration/no-serialization docker-cli-configuration
(docker-cli
(package docker-cli)
"The Docker cli package installed to the Home profile.")
(creds-store
(maybe-string)
"A native secrets store used to store Docker credentials.")
(cli-plugins
(list-of-docker-cli-plugins '())
"A list of Docker cli plugin package records that will be configured to work with Docker's cli.")
(extra-content
(string "")
"Additional literal content that will be appended to Docker cli config.json."))
(define docker-cli-configuration->json-fields
(lambda (config)
(filter (compose not (lambda (f) (or (null? f) (and (string? f) (string-null? f)))))
(map (lambda (f)
(let ((field-name (configuration-field-name f))
(type (configuration-field-type f))
(value ((configuration-field-getter f) config)))
(if (not (member field-name '(docker-cli extra-content)))
(match type
('string
(serialize-string field-name value))
('maybe-string
(serialize-maybe-string field-name value))
('list-of-strings
(serialize-list-of-strings field-name value))
('list-of-docker-cli-plugins
(serialize-list-of-docker-cli-plugins value))
(_
(raise
(formatted-message
(G_ "Unknown docker-cli-configuration field type: ~a")
type))))
'())))
docker-cli-configuration-fields))))
(define (home-docker-cli-configuration-file config)
`((".docker/config.json"
,(computed-file "docker-cli-config.json"
#~(with-output-to-file #$output
(lambda _
(display
(string-append "{"
(string-join (list #$@(docker-cli-configuration->json-fields config)) ",")
#$(docker-cli-configuration-extra-content config)
"}\n"))))))))
(define home-docker-cli-service-type
(service-type (name 'docker-cli)
(extensions (list (service-extension home-profile-service-type
(lambda (config)
`(,(docker-cli-configuration-docker-cli config)
,@(docker-cli-configuration-cli-plugins config))))
(service-extension home-files-service-type
home-docker-cli-configuration-file)))
(default-value (docker-cli-configuration))
(description
"This service install and configures Docker's command line interface.")))
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