add "preos" subcommand to generate preos

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>

cdist/preos.py

@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+#
+# 2013 Nico Schottelius (nico-cdist at schottelius.org)
+#
+# This file is part of cdist.
+#
+# cdist 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.
+#
+# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import logging
+import os
+import subprocess
+
+# initialise cdist
+import cdist.exec.local
+
+import cdist.config
+
+log = logging.getLogger(__name__)
+
+class PreOS(object):
+    
+    def __init__(self, target_dir, arch="amd64"):
+
+        self.target_dir = target_dir
+        self.arch = arch
+
+        self.command = "debootstrap"
+        self.suite  = "wheezy"
+        self.options = [ "--include=openssh-server",
+            "--arch=%s" % self.arch ]
+
+    def run(self):
+        cmd = [ self.command ]
+        cmd.extend(self.options)
+        cmd.append(self.suite)
+        cmd.append(self.target_dir)
+
+        log.debug("Bootstrap: %s" % cmd)
+
+        subprocess.call(cmd)
+
+
+    @classmethod
+    def commandline(cls, args):
+        print(args)
+        self = cls(target_dir=args.target_dir[0],
+            arch=args.arch)
+        self.run()

scripts/cdist

@@ -26,6 +26,7 @@ def commandline():
 
     import cdist.banner
     import cdist.config
+    import cdist.preos
     import cdist.shell
 
     # Construct parser others can reuse
@@ -83,6 +84,15 @@ def commandline():
          default=cdist.REMOTE_EXEC)
     parser['config'].set_defaults(func=cdist.config.Config.commandline)
 
+    # PreOS
+    parser['preos'] = parser['sub'].add_parser('preos', 
+        parents=[parser['loglevel']])
+    parser['preos'].add_argument('-a', '--arch',
+         help='Select architecture for preos', default="amd64")
+    parser['preos'].add_argument('target_dir', nargs=1,
+        help='Select target directory')
+    parser['preos'].set_defaults(func=cdist.preos.PreOS.commandline)
+
     # Shell
     parser['shell'] = parser['sub'].add_parser('shell', 
         parents=[parser['loglevel']])