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-rw-r--r--gnu/tests/vnstat.scm159
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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
+ (let* ((inetd-service-name "discard")
+ (inetd-service-proto
+ (inetd-entry-protocol inetd-service-entry-config))
+ (guest-port
+ (servent:port (getservbyname inetd-service-name
+ inetd-service-proto))))
+ (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))))