Add pwgen recipe.

setup.py

@@ -86,6 +86,7 @@ setup(name=name,
           'pbs = slapos.recipe.pbs:Recipe',
           'publish = slapos.recipe.publish:Recipe',
           'publishurl = slapos.recipe.publishurl:Recipe',
+          'pwgen = slapos.recipe.pwgen:Recipe',
           'proactive = slapos.recipe.proactive:Recipe',
           'request = slapos.recipe.request:Recipe',
           'sheepdogtestbed = slapos.recipe.sheepdogtestbed:SheepDogTestBed',

slapos/recipe/pwgen.py

+##############################################################################
+#
+# Copyright (c) 2010 Vifib SARL and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program 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.
+#
+# This program 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, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+import subprocess
+import os
+
+from slapos.recipe.librecipe import GenericBaseRecipe
+
+class Recipe(GenericBaseRecipe):
+
+  def _options(self, options):
+    if not os.path.exists(self.options['file']):
+      password = subprocess.check_output([self.options['pwgen-binary'], '-1']).strip()
+      with open(self.options['file'], 'w') as password_file:
+        password_file.write(password)
+    else:
+      with open(self.options['file'], 'r') as password_file:
+        password = password_file.read()
+    options['password'] = password
+
+  def install(self):
+    return []