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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Danny Milosavljevic <dannym@scratchpost.org>
;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.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 tests docker)
#:use-module (gnu tests)
#:use-module (gnu system)
#:use-module (gnu system file-systems)
#:use-module (gnu system vm)
#:use-module (gnu services)
#:use-module (gnu services dbus)
#:use-module (gnu services networking)
#:use-module (gnu services docker)
#:use-module (gnu services desktop)
#:use-module (gnu packages docker)
#:use-module (gnu packages guile)
#:use-module (guix gexp)
#:use-module (guix grafts)
#:use-module (guix monads)
#:use-module (guix packages)
#:use-module (guix profiles)
#:use-module (guix scripts pack)
#:use-module (guix store)
#:use-module (guix tests)
#:use-module (guix build-system trivial)
#:use-module ((guix licenses) #:prefix license:)
#:export (%test-docker
%test-docker-system))
(define %docker-os
(simple-operating-system
(service dhcp-client-service-type)
(dbus-service)
(polkit-service)
(service elogind-service-type)
(service docker-service-type)))
(define (run-docker-test docker-tarball)
"Load DOCKER-TARBALL as Docker image and run it in a Docker container,
inside %DOCKER-OS."
(define os
(marionette-operating-system
%docker-os
#:imported-modules '((gnu services herd)
(guix combinators))))
(define vm
(virtual-machine
(operating-system os)
(memory-size 700)
(disk-image-size (* 1500 (expt 2 20)))
(port-forwardings '())))
(define test
(with-imported-modules '((gnu build marionette))
#~(begin
(use-modules (srfi srfi-11) (srfi srfi-64)
(gnu build marionette))
(define marionette
(make-marionette (list #$vm)))
(mkdir #$output)
(chdir #$output)
(test-begin "docker")
(test-assert "service running"
(marionette-eval
'(begin
(use-modules (gnu services herd))
(match (start-service 'dockerd)
(#f #f)
(('service response-parts ...)
(match (assq-ref response-parts 'running)
((pid) (number? pid))))))
marionette))
(test-eq "fetch version"
0
(marionette-eval
`(begin
(system* ,(string-append #$docker-cli "/bin/docker")
"version"))
marionette))
(test-equal "Load docker image and run it"
'("hello world" "hi!" "JSON!" #o1777)
(marionette-eval
`(begin
(define slurp
(lambda args
(let* ((port (apply open-pipe* OPEN_READ args))
(output (read-line port))
(status (close-pipe port)))
output)))
(let* ((raw-line (slurp ,(string-append #$docker-cli
"/bin/docker")
"load" "-i"
,#$docker-tarball))
(repository&tag (string-drop raw-line
(string-length
"Loaded image: ")))
(response1 (slurp
,(string-append #$docker-cli "/bin/docker")
"run" "--entrypoint" "bin/Guile"
repository&tag
"/aa.scm"))
(response2 (slurp ;default entry point
,(string-append #$docker-cli "/bin/docker")
"run" repository&tag
"-c" "(display \"hi!\")"))
;; Check whether (json) is in $GUILE_LOAD_PATH.
(response3 (slurp ;default entry point + environment
,(string-append #$docker-cli "/bin/docker")
"run" repository&tag
"-c" "(use-modules (json))
(display (json-string->scm (scm->json-string \"JSON!\")))"))
;; Check whether /tmp exists.
(response4 (slurp
,(string-append #$docker-cli "/bin/docker")
"run" repository&tag "-c"
"(display (stat:perms (lstat \"/tmp\")))")))
(list response1 response2 response3
(string->number response4))))
marionette))
(test-end)
(exit (= (test-runner-fail-count (test-runner-current)) 0)))))
(gexp->derivation "docker-test" test))
(define (build-tarball&run-docker-test)
(mlet* %store-monad
((_ (set-grafting #f))
(guile (set-guile-for-build (default-guile)))
(guest-script-package ->
(package
(name "guest-script")
(version "0")
(source #f)
(build-system trivial-build-system)
(arguments `(#:guile ,guile-3.0
#:builder
(let ((out (assoc-ref %outputs "out")))
(mkdir out)
(call-with-output-file (string-append out "/a.scm")
(lambda (port)
(display "(display \"hello world\n\")" port)))
#t)))
(synopsis "Display hello world using Guile")
(description "This package displays the text \"hello world\" on the
standard output device and then enters a new line.")
(home-page #f)
(license license:public-domain)))
(profile (profile-derivation (packages->manifest
(list guile-3.0 guile-json-3
guest-script-package))
#:hooks '()
#:locales? #f))
(tarball (docker-image "docker-pack" profile
#:symlinks '(("/bin/Guile" -> "bin/guile")
("aa.scm" -> "a.scm"))
#:entry-point "bin/guile"
#:localstatedir? #t)))
(run-docker-test tarball)))
(define %test-docker
(system-test
(name "docker")
(description "Test Docker container of Guix.")
(value (build-tarball&run-docker-test))))
(define (run-docker-system-test tarball)
"Load DOCKER-TARBALL as Docker image and run it in a Docker container,
inside %DOCKER-OS."
(define os
(marionette-operating-system
%docker-os
#:imported-modules '((gnu services herd)
(guix combinators))))
(define vm
(virtual-machine
(operating-system os)
;; FIXME: Because we're using the volatile-root setup where the root file
;; system is a tmpfs overlaid over a small root file system, 'docker
;; load' must be able to store the whole image into memory, hence the
;; huge memory requirements. We should avoid the volatile-root setup
;; instead.
(memory-size 3500)
(port-forwardings '())))
(define test
(with-imported-modules '((gnu build marionette)
(guix build utils))
#~(begin
(use-modules (srfi srfi-11) (srfi srfi-64)
(gnu build marionette)
(guix build utils))
(define marionette
(make-marionette (list #$vm)))
(mkdir #$output)
(chdir #$output)
(test-begin "docker")
(test-assert "service running"
(marionette-eval
'(begin
(use-modules (gnu services herd))
(match (start-service 'dockerd)
(#f #f)
(('service response-parts ...)
(match (assq-ref response-parts 'running)
((pid) (number? pid))))))
marionette))
(test-assert "load system image and run it"
(marionette-eval
`(begin
(define (slurp command . args)
;; Return the output from COMMAND.
(let* ((port (apply open-pipe* OPEN_READ command args))
(output (read-line port))
(status (close-pipe port)))
output))
(define (docker-cli command . args)
;; Run the given Docker COMMAND.
(apply invoke #$(file-append docker-cli "/bin/docker")
command args))
(define (wait-for-container-file container file)
;; Wait for FILE to show up in CONTAINER.
(docker-cli "exec" container
#$(file-append guile-3.0 "/bin/guile")
"-c"
(object->string
`(let loop ((n 15))
(when (zero? n)
(error "file didn't show up" ,file))
(unless (file-exists? ,file)
(sleep 1)
(loop (- n 1)))))))
(let* ((line (slurp #$(file-append docker-cli "/bin/docker")
"load" "-i" #$tarball))
(repository&tag (string-drop line
(string-length
"Loaded image: ")))
(container (slurp
#$(file-append docker-cli "/bin/docker")
"create" repository&tag)))
(docker-cli "start" container)
;; Wait for shepherd to be ready.
(wait-for-container-file container
"/var/run/shepherd/socket")
(docker-cli "exec" container
"/run/current-system/profile/bin/herd"
"status")
(slurp #$(file-append docker-cli "/bin/docker")
"exec" container
"/run/current-system/profile/bin/herd"
"status" "guix-daemon")))
marionette))
(test-end)
(exit (= (test-runner-fail-count (test-runner-current)) 0)))))
(gexp->derivation "docker-system-test" test))
(define %test-docker-system
(system-test
(name "docker-system")
(description "Run a system image as produced by @command{guix system
docker-image} inside Docker.")
(value (with-monad %store-monad
(>>= (system-docker-image (simple-operating-system))
run-docker-system-test)))))