# interpreted as representing official policies, either expressed
# or implied, of GRNET S.A.
-from image_creator.util import output, FatalError
+from image_creator.util import FatalError
import textwrap
import re
-def get_os_class(distro, osfamily):
+def os_cls(distro, osfamily):
+ """Given the distro name and the osfamily, return the appropriate class"""
module = None
classname = None
try:
- module = __import__("image_creator.os_type.%s"
- % distro, fromlist=['image_creator.os_type'])
+ module = __import__("image_creator.os_type.%s" % distro,
+ fromlist=['image_creator.os_type'])
classname = distro.capitalize()
except ImportError:
- module = __import__("image_creator.os_type.%s"
- % osfamily, fromlist=['image_creator.os_type'])
+ module = __import__("image_creator.os_type.%s" % osfamily,
+ fromlist=['image_creator.os_type'])
classname = osfamily.capitalize()
return getattr(module, classname)
def sysprep(enabled=True):
+ """Decorator for system preparation tasks"""
def wrapper(func):
func.sysprep = True
func.enabled = enabled
+ func.executed = False
return func
return wrapper
class OSBase(object):
"""Basic operating system class"""
- def __init__(self, rootdev, ghandler):
+ def __init__(self, rootdev, ghandler, output):
self.root = rootdev
self.g = ghandler
-
- # Collect metadata about the OS
+ self.out = output
self.meta = {}
+
+ def collect_metadata(self):
+ """Collect metadata about the OS"""
+
+ try:
+ if not self.mount(readonly=True):
+ raise FatalError("Unable to mount the media read-only")
+
+ self.out.output('Collecting image metadata ...', False)
+ self._do_collect_metadata()
+ self.out.success('done')
+ finally:
+ self.umount()
+
+ def _do_collect_metadata(self):
+
self.meta['ROOT_PARTITION'] = "%d" % self.g.part_to_partnum(self.root)
self.meta['OSFAMILY'] = self.g.inspect_get_type(self.root)
self.meta['OS'] = self.g.inspect_get_distro(self.root)
+ if self.meta['OS'] == "unknown":
+ self.meta['OS'] = self.meta['OSFAMILY']
self.meta['DESCRIPTION'] = self.g.inspect_get_product_name(self.root)
def _is_sysprep(self, obj):
def list_syspreps(self):
- objs = [getattr(self, name) for name in dir(self) \
- if not name.startswith('_')]
+ objs = [getattr(self, name) for name in dir(self)
+ if not name.startswith('_')]
- enabled = [x for x in objs if self._is_sysprep(x) and x.enabled]
- disabled = [x for x in objs if self._is_sysprep(x) and not x.enabled]
+ return [x for x in objs if self._is_sysprep(x) and x.executed is False]
- return enabled, disabled
+ def sysprep_info(self, obj):
+ assert self._is_sysprep(obj), "Object is not a sysprep"
- def _sysprep_change_status(self, name, status):
+ return (obj.__name__.replace('_', '-'), textwrap.dedent(obj.__doc__))
+ def get_sysprep_by_name(self, name):
+ """Returns the sysprep object with the given name"""
error_msg = "Syprep operation %s does not exist for %s" % \
- (name, self.__class__.__name__)
+ (name, self.__class__.__name__)
method_name = name.replace('-', '_')
method = None
if not self._is_sysprep(method):
raise FatalError(error_msg)
- setattr(method.im_func, 'enabled', status)
+ return method
- def enable_sysprep(self, name):
- """Enable a system preperation operation"""
- self._sysprep_change_status(name, True)
+ def enable_sysprep(self, obj):
+ """Enable a system preparation operation"""
+ setattr(obj.im_func, 'enabled', True)
- def disable_sysprep(self, name):
- """Disable a system preperation operation"""
- self._sysprep_change_status(name, False)
+ def disable_sysprep(self, obj):
+ """Disable a system preparation operation"""
+ setattr(obj.im_func, 'enabled', False)
def print_syspreps(self):
- """Print enabled and disabled system preperation operations."""
+ """Print enabled and disabled system preparation operations."""
- enabled, disabled = self.list_syspreps()
+ syspreps = self.list_syspreps()
+ enabled = filter(lambda x: x.enabled, syspreps)
+ disabled = filter(lambda x: not x.enabled, syspreps)
wrapper = textwrap.TextWrapper()
wrapper.subsequent_indent = '\t'
wrapper.initial_indent = '\t'
wrapper.width = 72
- output("Enabled system preperation operations:")
+ self.out.output("Enabled system preparation operations:")
if len(enabled) == 0:
- output("(none)")
+ self.out.output("(none)")
else:
for sysprep in enabled:
name = sysprep.__name__.replace('_', '-')
descr = wrapper.fill(textwrap.dedent(sysprep.__doc__))
- output(' %s:\n%s\n' % (name, descr))
+ self.out.output(' %s:\n%s\n' % (name, descr))
- output("Disabled system preperation operations:")
+ self.out.output("Disabled system preparation operations:")
if len(disabled) == 0:
- output("(none)")
+ self.out.output("(none)")
else:
for sysprep in disabled:
name = sysprep.__name__.replace('_', '-')
descr = wrapper.fill(textwrap.dedent(sysprep.__doc__))
- output(' %s:\n%s\n' % (name, descr))
+ self.out.output(' %s:\n%s\n' % (name, descr))
@add_prefix
def ls(self, directory):
def do_sysprep(self):
"""Prepere system for image creation."""
- output('Preparing system for image creation:')
+ try:
+ if not self.mount(readonly=False):
+ raise FatalError("Unable to mount the media read-write")
+
+ self.out.output('Preparing system for image creation:')
+
+ tasks = self.list_syspreps()
+ enabled = filter(lambda x: x.enabled, tasks)
+
+ size = len(enabled)
+ cnt = 0
+ for task in enabled:
+ cnt += 1
+ self.out.output(('(%d/%d)' % (cnt, size)).ljust(7), False)
+ task()
+ setattr(task.im_func, 'executed', True)
+ self.out.output()
+ finally:
+ self.umount()
+
+ def _do_mount(self, readonly):
+ try:
+ self.g.mount_options('ro' if readonly else 'rw', self.root, '/')
+ except RuntimeError as msg:
+ self.out.warn("unable to mount the root partition: %s" % msg)
+ return False
+
+ return True
+
+ def mount(self, readonly=False):
+ """Mount image."""
+
+ if getattr(self, "mounted", False):
+ return True
+
+ mount_type = 'read-only' if readonly else 'read-write'
+ self.out.output("Mount the media %s ..." % mount_type, False)
+
+ if not self._do_mount(readonly):
+ return False
+
+ self.mounted = True
+ self.out.success('done')
+ return True
- tasks, _ = self.list_syspreps()
- size = len(tasks)
- cnt = 0
- for task in tasks:
- cnt += 1
- output(('(%d/%d)' % (cnt, size)).ljust(7), False)
- task()
- output()
+ def umount(self):
+ """Umount all mounted filesystems."""
+ self.g.umount_all()
+ self.mounted = False
# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
projects / snf-image-creator / blobdiff