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move Object class into its own file

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Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>
remotes/origin/feature_files_export
Steven Armstrong 14 years ago
parent a4abb53ced
commit cdba503ff2
1 changed files with 36 additions and 287 deletions
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  1. 323
      lib/cdist/core/object.py

323
lib/cdist/core/object.py vendored
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@ -1,292 +1,37 @@
import os
import tempfile
# FIXME: change these to match your environment
os.environ['__cdist_base_dir'] = '/home/sar/vcs/cdist'
# FIXME: testing against the cache, change path
os.environ['__cdist_out_dir'] = '/home/sar/vcs/cdist/cache/sans-asteven-02.ethz.ch/out'
'''
cd /path/to/dir/with/this/file
ipython
In [1]: import oo
In [2]: t = oo.Type('__mkfs')
In [3]: t.
t.base_dir t.is_install t.list_type_names t.name t.path
t.explorers t.is_singleton t.list_types t.optional_parameters t.required_parameters
In [3]: t.path
Out[3]: '/home/sar/vcs/cdist/conf/type/__mkfs'
In [4]: t.required_parameters
Out[4]: ['type']
In [5]: t.optional_parameters
Out[5]: ['device', 'options', 'blocks']
In [6]: t.is
t.is_install t.is_singleton
In [6]: t.is_singleton
Out[6]: False
In [7]: o = oo.Object(t, 'dev/sda1')
In [8]: o.
o.base_dir o.list_object_names o.list_type_names o.parameter o.qualified_name o.type
o.changed o.list_objects o.object_id o.path o.requirements
In [8]: o.pa
o.parameter o.path
In [8]: o.path
Out[8]: '/home/sar/vcs/cdist/cache/sans-asteven-02.ethz.ch/out/object/__mkfs/dev/sda1/.cdist'
In [9]: o.changed
Out[9]: False
In [10]: o.changed = True
In [11]: # creates /home/sar/vcs/cdist/cache/sans-asteven-02.ethz.ch/out/object/__mkfs/dev/sda1/.cdist/changed
In [12]: o.changed
Out[12]: True
In [13]: o.changed = False
In [14]: # removes /home/sar/vcs/cdist/cache/sans-asteven-02.ethz.ch/out/object/__mkfs/dev/sda1/.cdist/changed
In [15]:
-----
In [1]: import oo
In [2]: oo.Type.
oo.Type.base_dir oo.Type.is_install oo.Type.list_type_names oo.Type.mro oo.Type.path
oo.Type.explorers oo.Type.is_singleton oo.Type.list_types oo.Type.optional_parameters oo.Type.required_parameters
In [2]: oo.Type.list
oo.Type.list_type_names oo.Type.list_types
In [2]: oo.Type.list_type_names()
Out[2]:
['__addifnosuchline',
'__apt_ppa',
'__apt_update_index',
'__autofs_map',
'__autofs_master',
'__debconf_set_selections',
'__directory',
'__file',
'__group',
'__issue',
'__key_value',
'__link',
'__mkfs',
'__motd',
'__package',
'__package_apt',
'__package_pacman',
'__package_pkg_openbsd',
'__package_rubygem',
'__package_yum',
'__partition_msdos',
'__partition_msdos_apply',
'__postgres_database',
'__postgres_role',
'__process',
'__removeline',
'__ssh_authorized_key',
'__timezone',
'__user']
In [3]: list(oo.Type.list_types())
Out[3]:
[<Type name=__addifnosuchline>,
<Type name=__apt_ppa>,
<Type name=__apt_update_index>,
<Type name=__autofs_map>,
<Type name=__autofs_master>,
<Type name=__debconf_set_selections>,
<Type name=__directory>,
<Type name=__file>,
<Type name=__group>,
<Type name=__issue>,
<Type name=__key_value>,
<Type name=__link>,
<Type name=__mkfs>,
<Type name=__motd>,
<Type name=__package>,
<Type name=__package_apt>,
<Type name=__package_pacman>,
<Type name=__package_pkg_openbsd>,
<Type name=__package_rubygem>,
<Type name=__package_yum>,
<Type name=__partition_msdos>,
<Type name=__partition_msdos_apply>,
<Type name=__postgres_database>,
<Type name=__postgres_role>,
<Type name=__process>,
<Type name=__removeline>,
<Type name=__ssh_authorized_key>,
<Type name=__timezone>,
<Type name=__user>]
In [4]:
In [4]: oo.Object.
oo.Object.base_dir oo.Object.changed oo.Object.list_object_names oo.Object.list_objects oo.Object.list_type_names oo.Object.mro oo.Object.path
In [4]: oo.Object.list
oo.Object.list_object_names oo.Object.list_objects oo.Object.list_type_names
In [4]: oo.Object.list_ob
oo.Object.list_object_names oo.Object.list_objects
In [4]: oo.Object.list_object_names()
Out[4]: <generator object list_object_names at 0x1b759b0>
In [5]: list(oo.Object.list_object_names())
Out[5]:
['__mkfs/dev/sda1',
'__mkfs/dev/sda2',
'__mkfs/dev/sda5',
'__mkfs/dev/sda6',
'__mkfs/dev/sda7',
'__partition_msdos/dev/sda1',
'__partition_msdos/dev/sda2',
'__partition_msdos/dev/sda3',
'__partition_msdos/dev/sda5',
'__partition_msdos/dev/sda6',
'__partition_msdos/dev/sda7',
'__partition_msdos_apply/singleton']
In [6]: list(oo.Object.list_objects())
Out[6]:
[<Object __mkfs/dev/sda1>,
<Object __mkfs/dev/sda2>,
<Object __mkfs/dev/sda5>,
<Object __mkfs/dev/sda6>,
<Object __mkfs/dev/sda7>,
<Object __partition_msdos/dev/sda1>,
<Object __partition_msdos/dev/sda2>,
<Object __partition_msdos/dev/sda3>,
<Object __partition_msdos/dev/sda5>,
<Object __partition_msdos/dev/sda6>,
<Object __partition_msdos/dev/sda7>,
<Object __partition_msdos_apply/singleton>]
In [7]:
'''
class Type(object):
# -*- coding: utf-8 -*-
#
# 2010-2011 Steven Armstrong (steven-cdist at armstrong.cc)
#
# 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/>.
#
#
@staticmethod
def base_dir():
"""Return the absolute path to the top level directory where types
are defined.
Requires the environment variable '__cdist_base_dir' to be set.
"""
return os.path.join(
os.environ['__cdist_base_dir'],
'conf',
'type'
)
@classmethod
def list_types(cls):
"""Return a list of type instances"""
for type_name in cls.list_type_names():
yield cls(type_name)
@classmethod
def list_type_names(cls):
"""Return a list of type names"""
return os.listdir(cls.base_dir())
def __init__(self, name):
self.name = name
self.__explorers = None
self.__required_parameters = None
self.__optional_parameters = None
def __repr__(self):
return '<Type name=%s>' % self.name
@property
def path(self):
return os.path.join(
self.base_dir(),
self.name
)
@property
def is_singleton(self):
"""Check whether a type is a singleton."""
return os.path.isfile(os.path.join(self.path, "singleton"))
@property
def is_install(self):
"""Check whether a type is used for installation (if not: for configuration)"""
return os.path.isfile(os.path.join(self.path, "install"))
import os
@property
def explorers(self):
"""Return a list of available explorers"""
if not self.__explorers:
try:
self.__explorers = os.listdir(os.path.join(self.path, "explorer"))
except EnvironmentError as e:
# error ignored
self.__explorers = []
return self.__explorers
import cdist
@property
def required_parameters(self):
"""Return a list of required parameters"""
if not self.__required_parameters:
parameters = []
try:
with open(os.path.join(self.path, "parameter", "required")) as fd:
for line in fd:
parameters.append(line.strip())
except EnvironmentError as e:
# error ignored
pass
finally:
self.__required_parameters = parameters
return self.__required_parameters
@property
def optional_parameters(self):
"""Return a list of optional parameters"""
if not self.__optional_parameters:
parameters = []
try:
with open(os.path.join(self.path, "parameter", "optional")) as fd:
for line in fd:
parameters.append(line.strip())
except EnvironmentError as e:
# error ignored
pass
finally:
self.__optional_parameters = parameters
return self.__optional_parameters
class Object(object):
"""Represents a cdist object.
All interaction with objects in cdist should be done through this class.
Directly accessing an object through the file system from python code is
a bug.
class Object(object):
"""
@staticmethod
def base_dir():
@ -296,10 +41,14 @@ class Object(object):
Requires the environment variable '__cdist_out_dir' to be set.
"""
base_dir = os.path.join(
os.environ['__cdist_out_dir'],
'object'
)
try:
base_dir = os.path.join(
os.environ['__cdist_out_dir'],
'object'
)
except KeyError as e:
raise cdist.MissingEnvironmentVariableError(e.args[0])
# FIXME: should directory be created elsewhere?
if not os.path.isdir(base_dir):
os.mkdir(base_dir)

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