1 # Copyright 2012 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 # The views and conclusions contained in the software and
30 # documentation are those of the authors and should not be
31 # interpreted as representing official policies, either expressed
32 # or implied, of GRNET S.A.
34 from image_creator.util import output, FatalError
40 def get_os_class(distro, osfamily):
44 module = __import__("image_creator.os_type.%s"
45 % distro, fromlist=['image_creator.os_type'])
46 classname = distro.capitalize()
48 module = __import__("image_creator.os_type.%s"
49 % osfamily, fromlist=['image_creator.os_type'])
50 classname = osfamily.capitalize()
52 return getattr(module, classname)
55 def add_prefix(target):
56 def wrapper(self, *args):
58 return map(lambda x: prefix + x, target(self, *args))
62 def sysprep(enabled=True):
65 func.enabled = enabled
71 """Basic operating system class"""
73 def __init__(self, rootdev, ghandler):
77 def _is_sysprep(self, obj):
78 return getattr(obj, 'sysprep', False) and callable(obj)
80 def list_syspreps(self):
82 objs = [getattr(self, name) for name in dir(self) \
83 if not name.startswith('_')]
85 enabled = [x for x in objs if self._is_sysprep(x) and x.enabled]
86 disabled = [x for x in objs if self._is_sysprep(x) and not x.enabled]
88 return enabled, disabled
90 def _sysprep_change_status(self, name, status):
92 error_msg = "Syprep operation %s does not exist for %s" % \
93 (name, self.__class__.__name__)
95 method_name = name.replace('-', '_')
98 method = getattr(self, method_name)
99 except AttributeError:
100 raise FatalError(error_msg)
102 if not self._is_sysprep(method):
103 raise FatalError(error_msg)
105 setattr(method.im_func, 'enabled', status)
107 def enable_sysprep(self, name):
108 """Enable a system preperation operation"""
109 self._sysprep_change_status(name, True)
111 def disable_sysprep(self, name):
112 """Disable a system preperation operation"""
113 self._sysprep_change_status(name, False)
115 def print_syspreps(self):
116 """Print enabled and disabled system preperation operations."""
118 enabled, disabled = self.list_syspreps()
120 wrapper = textwrap.TextWrapper()
121 wrapper.subsequent_indent = '\t'
122 wrapper.initial_indent = '\t'
124 output("Enabled system preperation operations:")
125 if len(enabled) == 0:
128 for sysprep in enabled:
129 name = sysprep.__name__.replace('_', '-')
130 descr = wrapper.fill(sysprep.__doc__)
131 output(' %s:\n%s\n' % (name, descr))
133 output("Disabled system preperation operations:")
134 if len(disabled) == 0:
137 for sysprep in disabled:
138 name = sysprep.__name__.replace('_', '-')
139 descr = wrapper.fill(sysprep.__doc__)
140 output(' %s:\n%s\n' % (name, descr))
143 def ls(self, directory):
144 """List the name of all files under a directory"""
145 return self.g.ls(directory)
148 def find(self, directory):
149 """List the name of all files recursively under a directory"""
150 return self.g.find(directory)
152 def foreach_file(self, directory, action, **kargs):
153 """Perform an action recursively on all files under a directory.
155 The following options are allowed:
157 * maxdepth: If defined the action will not be performed on
158 files that are below this level of directories under the
161 * ftype: The action will only be performed on files of this
162 type. For a list of all allowed filetypes, see here:
163 http://libguestfs.org/guestfs.3.html#guestfs_readdir
165 * exclude: Exclude all files that follow this pattern.
167 maxdepth = None if 'maxdepth' not in kargs else kargs['maxdepth']
172 maxdepth = None if maxdepth is None else maxdepth - 1
173 kargs['maxdepth'] = maxdepth
175 exclude = None if 'exclude' not in kargs else kargs['exclude']
176 ftype = None if 'ftype' not in kargs else kargs['ftype']
177 has_ftype = lambda x, y: y is None and True or x['ftyp'] == y
179 for f in self.g.readdir(directory):
180 if f['name'] in ('.', '..'):
183 full_path = "%s/%s" % (directory, f['name'])
185 if exclude and re.match(exclude, full_path):
188 if has_ftype(f, 'd'):
189 self.foreach_file(full_path, action, **kargs)
191 if has_ftype(f, ftype):
194 def get_metadata(self):
195 """Returns some descriptive metadata about the OS."""
197 meta['ROOT_PARTITION'] = "%d" % self.g.part_to_partnum(self.root)
198 meta['OSFAMILY'] = self.g.inspect_get_type(self.root)
199 meta['OS'] = self.g.inspect_get_distro(self.root)
200 meta['DESCRIPTION'] = self.g.inspect_get_product_name(self.root)
204 def do_sysprep(self):
205 """Prepere system for image creation."""
207 output('Preparing system for image creation:')
209 tasks, _ = self.list_syspreps()
214 output(('(%d/%d)' % (cnt, size)).ljust(7), False)
218 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :