X-Git-Url: https://code.grnet.gr/git/snf-image-creator/blobdiff_plain/5b801534a4277ae5730a12736cd5ff5242aa62d9..e36b5b14098a56d2bb6a58742a3ebb72296e2d0a:/image_creator/os_type/__init__.py diff --git a/image_creator/os_type/__init__.py b/image_creator/os_type/__init__.py index b19d573..c0fa505 100644 --- a/image_creator/os_type/__init__.py +++ b/image_creator/os_type/__init__.py @@ -31,22 +31,22 @@ # 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): 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) @@ -70,27 +70,37 @@ def sysprep(enabled=True): class OSBase(object): """Basic operating system class""" - def __init__(self, rootdev, ghandler): + def __init__(self, rootdev, ghandler, output): self.root = rootdev self.g = ghandler + self.out = output + + # Collect metadata about the OS + self.meta = {} + 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) + self.meta['DESCRIPTION'] = self.g.inspect_get_product_name(self.root) def _is_sysprep(self, obj): return getattr(obj, 'sysprep', False) and callable(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)] - 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 @@ -102,42 +112,45 @@ class OSBase(object): 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(sysprep.__doc__) - output(' %s:\n%s\n' % (name, descr)) + descr = wrapper.fill(textwrap.dedent(sysprep.__doc__)) + 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(sysprep.__doc__) - output(' %s:\n%s\n' % (name, descr)) + descr = wrapper.fill(textwrap.dedent(sysprep.__doc__)) + self.out.output(' %s:\n%s\n' % (name, descr)) @add_prefix def ls(self, directory): @@ -191,28 +204,20 @@ class OSBase(object): if has_ftype(f, ftype): action(full_path) - def get_metadata(self): - """Returns some descriptive metadata about the OS.""" - meta = {} - meta['ROOT_PARTITION'] = "%d" % self.g.part_to_partnum(self.root) - meta['OSFAMILY'] = self.g.inspect_get_type(self.root) - meta['OS'] = self.g.inspect_get_distro(self.root) - meta['DESCRIPTION'] = self.g.inspect_get_product_name(self.root) - - return meta - def do_sysprep(self): """Prepere system for image creation.""" - output('Preparing system for image creation:') + self.out.output('Preparing system for image creation:') + + tasks = self.list_syspreps() + enabled = filter(lambda x: x.enabled, tasks) - tasks, _ = self.list_syspreps() - size = len(tasks) + size = len(enabled) cnt = 0 - for task in tasks: + for task in enabled: cnt += 1 - output(('(%d/%d)' % (cnt, size)).ljust(7), False) + self.out.output(('(%d/%d)' % (cnt, size)).ljust(7), False) task() - output() + self.out.output() # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :