116 lines
4.6 KiB
Scheme
116 lines
4.6 KiB
Scheme
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
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;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu home-services mcron)
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#:use-module (gnu packages guile-xyz)
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#:use-module (gnu home-services)
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#:use-module (gnu home-services shepherd)
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#:use-module (gnu services shepherd)
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#:use-module (guix records)
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#:use-module (guix gexp)
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#:use-module (srfi srfi-1)
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#:use-module (ice-9 match)
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#:export (home-mcron-configuration
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home-mcron-service-type))
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;;; Commentary:
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;;
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;; Service for the GNU mcron cron job manager.
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;;
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;; Example configuration, the first job runs mbsync once every ten
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;; minutes, the second one writes "Mcron service" to ~/mcron-file once
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;; every minute.
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;;
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;; (service home-mcron-service-type
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;; (home-mcron-configuration
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;; (jobs (list #~(job '(next-minute
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;; (range 0 60 10))
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;; (lambda ()
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;; (system* "mbsync" "--all")))
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;; #~(job next-minute-from
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;; (lambda ()
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;; (call-with-output-file (string-append (getenv "HOME")
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;; "/mcron-file")
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;; (lambda (port)
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;; (display "Mcron service" port)))))))))
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;;
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;;; Code:
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(define-record-type* <home-mcron-configuration> home-mcron-configuration
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make-home-mcron-configuration
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home-mcron-configuration?
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(package home-mcron-configuration-package ; package
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(default mcron))
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(jobs home-mcron-configuration-jobs ; list of jobs
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(default '())))
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(define job-files (@@ (gnu services mcron) job-files))
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(define shepherd-schedule-action
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(@@ (gnu services mcron) shepherd-schedule-action))
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(define home-mcron-shepherd-services
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(match-lambda
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(($ <home-mcron-configuration> mcron '()) ; no jobs to run
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'())
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(($ <home-mcron-configuration> mcron jobs)
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(let ((files (job-files mcron jobs)))
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(list (shepherd-service
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(documentation "User cron jobs.")
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(provision '(mcron))
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(modules `((srfi srfi-1)
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(srfi srfi-26)
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(ice-9 popen) ; for the 'schedule' action
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(ice-9 rdelim)
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(ice-9 match)
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,@%default-modules))
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(start #~(make-forkexec-constructor
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(list #$(file-append mcron "/bin/mcron") #$@files)
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#:log-file (string-append
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(or (getenv "XDG_LOG_HOME")
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(format #f "~a/.local/var/log"
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(getenv "HOME")))
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"/mcron.log")))
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(stop #~(make-kill-destructor))
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(actions
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(list (shepherd-schedule-action mcron files)))))))))
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(define home-mcron-profile (compose list home-mcron-configuration-package))
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(define (home-mcron-extend config jobs)
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(home-mcron-configuration
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(inherit config)
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(jobs (append (home-mcron-configuration-jobs config)
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jobs))))
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(define home-mcron-service-type
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(service-type (name 'home-mcron)
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(extensions
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(list (service-extension
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home-shepherd-service-type
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home-mcron-shepherd-services)
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(service-extension
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home-profile-service-type
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home-mcron-profile)))
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(compose concatenate)
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(extend home-mcron-extend)
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(default-value (home-mcron-configuration))
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(description
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"Install and configure the GNU mcron cron job manager.")))
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