docker: Take a list of directives instead of a list of symlinks.
* guix/docker.scm (symlink-source, topmost-component): Remove. (directive-file): New procedure. (build-docker-image): Remove #:symlinks and add #:extra-files. Make a sub-directory "extra" and call 'evaluate-populate-directive' for EXTRA-FILES in that directory. * guix/scripts/pack.scm (docker-image)[build](symlink->directives, directives): New procedures. Pass #:extra-files instead of #:symlinks to 'build-docker-image'.
This commit is contained in:
Ludovic Courtès
parent
b29d6abc8f
commit
2b7c89f4fc
@ -28,11 +28,13 @@
|
||||
invoke))
|
||||
#:use-module (gnu build install)
|
||||
#:use-module (json) ;guile-json
|
||||
#:use-module (srfi srfi-1)
|
||||
#:use-module (srfi srfi-19)
|
||||
#:use-module (srfi srfi-26)
|
||||
#:use-module ((texinfo string-utils)
|
||||
#:select (escape-special-chars))
|
||||
#:use-module (rnrs bytevectors)
|
||||
#:use-module (ice-9 ftw)
|
||||
#:use-module (ice-9 match)
|
||||
#:export (build-docker-image))
|
||||
|
||||
@ -99,21 +101,18 @@
|
||||
'("--sort=name" "--mtime=@1"
|
||||
"--owner=root:0" "--group=root:0"))
|
||||
|
||||
(define symlink-source
|
||||
(define directive-file
|
||||
;; Return the file or directory created by a 'evaluate-populate-directive'
|
||||
;; directive.
|
||||
(match-lambda
|
||||
((source '-> target)
|
||||
(string-trim source #\/))))
|
||||
|
||||
(define (topmost-component file)
|
||||
"Return the topmost component of FILE. For instance, if FILE is \"/a/b/c\",
|
||||
return \"a\"."
|
||||
(match (string-tokenize file (char-set-complement (char-set #\/)))
|
||||
((first rest ...)
|
||||
first)))
|
||||
(string-trim source #\/))
|
||||
(('directory name _ ...)
|
||||
(string-trim name #\/))))
|
||||
|
||||
(define* (build-docker-image image paths prefix
|
||||
#:key
|
||||
(symlinks '())
|
||||
(extra-files '())
|
||||
(transformations '())
|
||||
(system (utsname:machine (uname)))
|
||||
database
|
||||
@ -133,8 +132,9 @@ entry point in the Docker image JSON structure.
|
||||
ENVIRONMENT must be a list of name/value pairs. It specifies the environment
|
||||
variables that must be defined in the resulting image.
|
||||
|
||||
SYMLINKS must be a list of (SOURCE -> TARGET) tuples describing symlinks to be
|
||||
created in the image, where each TARGET is relative to PREFIX.
|
||||
EXTRA-FILES must be a list of directives for 'evaluate-populate-directive'
|
||||
describing non-store files that must be created in the image.
|
||||
|
||||
TRANSFORMATIONS must be a list of (OLD -> NEW) tuples describing how to
|
||||
transform the PATHS. Any path in PATHS that begins with OLD will be rewritten
|
||||
in the Docker image so that it begins with NEW instead. If a path is a
|
||||
@ -199,25 +199,27 @@ SRFI-19 time-utc object, as the creation time in metadata."
|
||||
(with-output-to-file "json"
|
||||
(lambda () (scm->json (image-description id time))))
|
||||
|
||||
;; Create SYMLINKS.
|
||||
(for-each (match-lambda
|
||||
((source '-> target)
|
||||
(let ((source (string-trim source #\/)))
|
||||
(mkdir-p (dirname source))
|
||||
(symlink (string-append prefix "/" target)
|
||||
source))))
|
||||
symlinks)
|
||||
;; Create a directory for the non-store files that need to go into the
|
||||
;; archive.
|
||||
(mkdir "extra")
|
||||
|
||||
(with-directory-excursion "extra"
|
||||
;; Create non-store files.
|
||||
(for-each (cut evaluate-populate-directive <> "./")
|
||||
extra-files)
|
||||
|
||||
(when database
|
||||
;; Initialize /var/guix, assuming PREFIX points to a profile.
|
||||
(install-database-and-gc-roots "." database prefix))
|
||||
|
||||
(apply invoke "tar" "-cf" "layer.tar"
|
||||
(apply invoke "tar" "-cf" "../layer.tar"
|
||||
`(,@transformation-options
|
||||
,@%tar-determinism-options
|
||||
,@paths
|
||||
,@(if database '("var") '())
|
||||
,@(map symlink-source symlinks)))
|
||||
,@(scandir "."
|
||||
(lambda (file)
|
||||
(not (member file '("." ".."))))))))
|
||||
|
||||
;; It is possible for "/" to show up in the archive, especially when
|
||||
;; applying transformations. For example, the transformation
|
||||
;; "s,^/a,," will (perhaps surprisingly) cause GNU tar to transform
|
||||
@ -231,13 +233,7 @@ SRFI-19 time-utc object, as the creation time in metadata."
|
||||
(lambda ()
|
||||
(system* "tar" "--delete" "/" "-f" "layer.tar")))
|
||||
|
||||
(for-each delete-file-recursively
|
||||
(map (compose topmost-component symlink-source)
|
||||
symlinks))
|
||||
|
||||
;; Delete /var/guix.
|
||||
(when database
|
||||
(delete-file-recursively "var")))
|
||||
(delete-file-recursively "extra"))
|
||||
|
||||
(with-output-to-file "config.json"
|
||||
(lambda ()
|
||||
|
||||
@ -490,7 +490,8 @@ the image."
|
||||
#~(begin
|
||||
(use-modules (guix docker) (guix build store-copy)
|
||||
(guix profiles) (guix search-paths)
|
||||
(srfi srfi-19) (ice-9 match))
|
||||
(srfi srfi-1) (srfi srfi-19)
|
||||
(ice-9 match))
|
||||
|
||||
(define environment
|
||||
(map (match-lambda
|
||||
@ -499,6 +500,21 @@ the image."
|
||||
value)))
|
||||
(profile-search-paths #$profile)))
|
||||
|
||||
(define symlink->directives
|
||||
;; Return "populate directives" to make the given symlink and its
|
||||
;; parent directories.
|
||||
(match-lambda
|
||||
((source '-> target)
|
||||
(let ((target (string-append #$profile "/" target))
|
||||
(parent (dirname source)))
|
||||
`((directory ,parent)
|
||||
(,source -> ,target))))))
|
||||
|
||||
(define directives
|
||||
;; Fully-qualified symlinks.
|
||||
(append-map symlink->directives '#$symlinks))
|
||||
|
||||
|
||||
(setenv "PATH" (string-append #$archiver "/bin"))
|
||||
|
||||
(build-docker-image #$output
|
||||
@ -513,7 +529,7 @@ the image."
|
||||
#$(and entry-point
|
||||
#~(list (string-append #$profile "/"
|
||||
#$entry-point)))
|
||||
#:symlinks '#$symlinks
|
||||
#:extra-files directives
|
||||
#:compressor '#$(compressor-command compressor)
|
||||
#:creation-time (make-time time-utc 0 1))))))
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user