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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2023 Bruno Victal <mirai@makinata.eu>.
;;;
;;; 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 tests vnstat)
#:use-module (gnu tests)
#:use-module ((gnu packages networking) #:select (socat vnstat))
#:use-module (gnu services)
#:use-module (gnu services networking)
#:use-module (gnu services monitoring)
#:use-module (gnu system)
#:use-module (gnu system vm)
#:use-module (guix gexp)
#:use-module (ice-9 format)
#:export (%test-vnstat))
(define (run-vnstat-test)
"Run tests in a vm which has vnstat running."
(define vnstat-config
(vnstat-configuration
(max-bandwidth 0)
(time-sync-wait 0)
(bandwidth-detection-interval 0)))
(define inetd-service-entry-config
(inetd-entry
(name "discard")
(socket-type 'stream)
(protocol "tcp")
(wait? #t)
(user "nobody")))
(define os
(marionette-operating-system
(simple-operating-system
(service dhcp-client-service-type)
(service vnstat-service-type
vnstat-config)
(service inetd-service-type
(inetd-configuration
(entries
(list inetd-service-entry-config)))))
#:imported-modules '((gnu services herd))))
(define forwarded-port 9999)
(define vm
;; The 'discard' port is 9. Avoid using 'getservbyname' as that might
;; fail depending on what /etc/services has (if it's available).
(let ((guest-port 9))
(virtual-machine
(operating-system os)
(port-forwardings `((,forwarded-port . ,guest-port))))))
;; The test duration is inconsistent, at times a test may complete under
;; 2 minutes and at times it may take up to 5 minutes.
(define test-timeout (* 60 5))
(define test
(with-imported-modules '((gnu build marionette))
#~(begin
(use-modules (gnu build marionette)
(srfi srfi-64))
(let ((marionette (make-marionette (list #$vm)))
(pid-file #$(vnstat-configuration-pid-file vnstat-config)))
(test-runner-current (system-test-runner #$output))
(test-begin "vnstat")
(test-assert "service is running"
(marionette-eval
'(begin
(use-modules (gnu services herd))
(start-service 'vnstatd))
marionette))
(test-assert "vnstatd ready"
(wait-for-file pid-file marionette))
;; Pump garbage into the 'discard' inetd service within the vm.
(let* ((socat #$(file-append socat "/bin/socat"))
(dest-addr #$(format #f "TCP4:localhost:~d"
forwarded-port))
(args `("socat" "-u" "/dev/zero" ,dest-addr))
;; XXX: Guile bug (22/03/2023, Guile 3.0.9)
;; Fixed in main: <https://issues.guix.gnu.org/61073>
;; FIXME: re-add #:output (%make-void-port "w") below on
;; next Guile release.
(garbage-pump-pid
(spawn socat args)))
(test-group-with-cleanup "Logging"
;; To aid debugging, this test returns #t on success
;; and either #f or 'timed-out otherwise.
(test-eq "vnstatd is logging"
#t
(marionette-eval
'(begin
(use-modules (ice-9 popen)
(ice-9 match)
(sxml simple)
(sxml xpath))
(define selector
(let ((xpath '(vnstat interface traffic total)))
(compose (node-pos 1) (sxpath xpath))))
(let loop ((i 0))
(let* ((vnstat #$(file-append vnstat "/bin/vnstat"))
(query-cmd (format #f "~a --xml" vnstat))
(proc (compose selector xml->sxml))
(result
(call-with-port
(open-input-pipe query-cmd) proc)))
(match result
;; Counter still warming up.
((('total ('rx "0") ('tx "0")))
(sleep 1)
(if (< i #$test-timeout)
(loop (+ i 1))
'timed-out))
;; Count of bytes on iface was non-zero.
((('total ('rx rx) ('tx tx)))
#t)
;; Unknown data encountered, perhaps the
;; data format changed?
(_ #f)))))
marionette))
;; Cleanup: shutdown garbage pump.
(kill garbage-pump-pid SIGTERM)))
(test-end)))))
(gexp->derivation "vnstat-test" test))
(define %test-vnstat
(system-test
(name "vnstat")
(description "Basic tests for vnstat service.")
(value (run-vnstat-test))))
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