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;;; Consfigurator -- Lisp declarative configuration management system
;;; Copyright (C) 2021 Sean Whitton <spwhitton@spwhitton.name>
;;; This file 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, or (at your option)
;;; any later version.
;;; This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
(in-package :consfigurator.property.git)
(named-readtables:in-readtable :consfigurator)
(defprop snapshot-extracted :posix
(directory snapshot-name
&key replace
&aux (dest
(merge-pathnames snapshot-name
(ensure-directory-pathname directory))))
"Extract a tarball as produced by DATA:GIT-SNAPSHOT under DIRECTORY.
If REPLACE, delete and replace the snapshot (or anything else) that already
exists at DIRECTORY/SNAPSHOT-NAME. This is useful to ensure the latest
available version of the snapshot is present on the remote system."
;; TODO Keyword argument to replace only if a newer version of the
;; prerequisite data is available.
(:desc (declare (ignore replace dest))
#?"git snapshot ${snapshot-name} extracted")
(:hostattrs (declare (ignore replace dest))
(require-data "--git-snapshot" snapshot-name))
(:check (and (not replace) (remote-exists-p dest)))
(:apply
(declare (ignore replace))
(delete-remote-trees dest)
(file:directory-exists directory)
(with-remote-current-directory (directory)
(mrun :input (get-data-stream "--git-snapshot" snapshot-name)
"tar" "xfz" "-")))
(:unapply
(declare (ignore replace))
(delete-remote-trees dest)))
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