;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2016, 2017, 2018, 2019, 2020 Ludovic Courtès ;;; ;;; 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 . (define-module (gnu services mcron) #:use-module (gnu services) #:use-module (gnu services shepherd) #:use-module (gnu packages guile-xyz) #:use-module (guix deprecation) #:use-module (guix records) #:use-module (guix gexp) #:use-module (srfi srfi-1) #:use-module (ice-9 match) #:use-module (ice-9 vlist) #:export (mcron-configuration mcron-configuration? mcron-configuration-mcron mcron-configuration-jobs mcron-service-type)) ;;; Commentary: ;;; ;;; This module implements a service that to run instances of GNU mcron, a ;;; periodic job execution daemon. Example of a service: ;; ;; (service mcron-service-type ;; (mcron-configuration ;; (jobs (list #~(job next-second-from ;; (lambda () ;; (call-with-output-file "/dev/console" ;; (lambda (port) ;; (display "hello!\n" port))))))))) ;;; ;;; Code: (define-record-type* mcron-configuration make-mcron-configuration mcron-configuration? (mcron mcron-configuration-mcron ;file-like (default mcron)) (jobs mcron-configuration-jobs ;list of (default '()))) (define (job-files mcron jobs) "Return a list of file-like object for JOBS, a list of gexps." (define (validated-file job) ;; This procedure behaves like 'scheme-file' but it runs 'mcron ;; --schedule' to detect any error in JOB. (computed-file "mcron-job" (with-imported-modules '((guix build utils)) #~(begin 2016-04-03build: Add a Guile custom test driver using SRFI-64....Before that '.log' files for scheme tests were fragmented and not included in test-suite.log. This unifies the semantics of SRFI-64 API with Automake test suite. * build-aux/test-driver.scm: New file. * Makefile.am (SCM_LOG_DRIVER, AM_SCM_LOG_DRIVER_FLAGS): New variables. (SCM_LOG_COMPILER, AM_SCM_LOG_FLAGS): Delete variables. (AM_TESTS_ENVIRONMENT): Set GUILE_AUTO_COMPILE to 0. * test-env.in: Silence guix-daemon. * doc/guix.texi (Running the Test Suite): Describe how to display the detailed results. Bug reports require only 'test-suite.log' file. * tests/base32.scm, tests/build-utils.scm, tests/builders.scm, tests/challenge.scm, tests/cpan.scm, tests/cpio.scm, tests/cran.scm, tests/cve.scm, tests/derivations.scm, tests/elpa.scm, tests/file-systems.scm, tests/gem.scm, tests/gexp.scm, tests/gnu-maintenance.scm, tests/grafts.scm, tests/graph.scm, tests/gremlin.scm, tests/hackage.scm, tests/hash.scm, tests/import-utils.scm, tests/lint.scm, tests/monads.scm, tests/nar.scm, tests/packages.scm, tests/pk-crypto.scm, tests/pki.scm, tests/profiles.scm, tests/publish.scm, tests/pypi.scm, tests/records.scm, tests/scripts-build.scm, tests/scripts.scm, tests/services.scm, tests/sets.scm, tests/size.scm, tests/snix.scm, tests/store.scm, tests/substitute.scm, tests/syscalls.scm, tests/system.scm, tests/ui.scm, tests/union.scm, tests/upstream.scm, tests/utils.scm: Don't exit at the end of test groups. * tests/containers.scm: Likewise. Use 'test-skip' instead of exiting with error code 77. Mathieu Lirzin t?) (catch 'system-error (lambda () (zero? (close-pipe pipe))) (lambda args ;; There's a race with the SIGCHLD handler, which ;; could call 'waitpid' before 'close-pipe' above does. If ;; we get ECHILD, that means we lost the race, but that's ;; fine. (or (= ECHILD (system-error-errno args)) (apply throw args))))) (line (display line) (loop))))))))) (define mcron-shepherd-services (match-lambda (($ mcron ()) ;nothing to do! '()) (($ mcron jobs) (let ((files (job-files mcron jobs))) (list (shepherd-service (provision '(mcron)) (requirement '(user-processes)) (modules `((srfi srfi-1) (srfi srfi-26) (ice-9 popen) ;for the 'schedule' action (ice-9 rdelim) (ice-9 match) ,@%default-modules)) (start #~(make-forkexec-constructor (list (string-append #$mcron "/bin/mcron") #$@files) ;; Disable auto-compilation of the job files and set a ;; sane value for 'PATH'. #:environment-variables (cons* "GUILE_AUTO_COMPILE=0" "PATH=/run/current-system/profile/bin" (remove (cut string-prefix? "PATH=" <>) (environ))) #:log-file "/var/log/mcron.log")) (stop #~(make-kill-destructor)) (actions (list (shepherd-schedule-action mcron files))))))))) (define mcron-service-type (service-type (name 'mcron) (description "Run the mcron job scheduling daemon.") (extensions (list (service-extension shepherd-root-service-type mcron-shepherd-services) (service-extension profile-service-type (compose list mcron-configuration-mcron)))) (compose concatenate) (extend (lambda (config jobs) (mcron-configuration (inherit config) (jobs (append (mcron-configuration-jobs config) jobs))))) (default-value (mcron-configuration)))) ;empty job list ;;; mcron.scm ends here