Merge branch 'master' of git://github.com/asteven/cdist

This commit is contained in:
Nico Schottelius 2011-10-11 00:19:01 +02:00
commit 9647933a40
20 changed files with 551 additions and 446 deletions

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@ -25,14 +25,14 @@ import os
import collections
import cdist
import cdist.core.property
import cdist.core
from cdist.util import fsproperty
log = logging.getLogger(__name__)
DOT_CDIST = '.cdist'
# FIXME: i should not have to care about prefix directory, local, remote and such.
# I know what my internals look like, the outside is none of my business.
class Object(object):
"""Represents a cdist object.
@ -63,8 +63,8 @@ class Object(object):
if DOT_CDIST in dirs:
yield os.path.relpath(path, object_base_path)
def __init__(self, type, base_path, object_id=None):
self.type = type # instance of Type
def __init__(self, cdist_type, base_path, object_id=None):
self.type = cdist_type # instance of Type
self.base_path = base_path
self.object_id = object_id
self.name = os.path.join(self.type.name, self.object_id)
@ -80,6 +80,10 @@ class Object(object):
def __repr__(self):
return '<Object %s>' % self.name
def __eq__(self, other):
"""define equality as 'attributes are the same'"""
return self.__dict__ == other.__dict__
@property
def explorer_path(self):
# create absolute path
@ -89,97 +93,8 @@ class Object(object):
# return relative path
return os.path.join(self.path, "explorer")
### requirements
@property
def requirements(self):
if not self.__requirements:
self.__requirements = cdist.core.property.FileList(os.path.join(self.path, "require"))
return self.__requirements
@requirements.setter
def requirements(self, value):
if isinstance(value, cdist.core.property.FileList):
self.__requirements = value
else:
self.__requirements = cdist.core.property.FileList(os.path.join(self.path, "require"), value)
### /requirements
### parameters
@property
def parameters(self):
if not self.__parameters:
self.__parameters = cdist.core.property.DirectoryDict(os.path.join(self.path, "parameter"))
return self.__parameters
@parameters.setter
def parameters(self, value):
if isinstance(value, cdist.core.property.DirectoryDict):
self.__parameters = value
else:
self.__parameters = cdist.core.property.DirectoryDict(os.path.join(self.path, "parameter"), value)
### /parameters
### changed
@property
def changed(self):
"""Check whether the object has been changed."""
return os.path.isfile(os.path.join(self.absolute_path, "changed"))
@changed.setter
def changed(self, value):
"""Change the objects changed status."""
path = os.path.join(self.absolute_path, "changed")
if value:
open(path, "w").close()
else:
try:
os.remove(path)
except EnvironmentError:
# ignore
pass
### /changed
### prepared
@property
def prepared(self):
"""Check whether the object has been prepared."""
return os.path.isfile(os.path.join(self.absolute_path, "prepared"))
@prepared.setter
def prepared(self, value):
"""Change the objects prepared status."""
path = os.path.join(self.absolute_path, "prepared")
if value:
open(path, "w").close()
else:
try:
os.remove(path)
except EnvironmentError:
# ignore
pass
### /prepared
### ran
@property
def ran(self):
"""Check whether the object has been ran."""
return os.path.isfile(os.path.join(self.absolute_path, "ran"))
@ran.setter
def ran(self, value):
"""Change the objects ran status."""
path = os.path.join(self.absolute_path, "ran")
if value:
open(path, "w").close()
else:
try:
os.remove(path)
except EnvironmentError:
# ignore
pass
### /ran
requirements = fsproperty.FileListProperty(lambda obj: os.path.join(obj.absolute_path, 'require'))
parameters = fsproperty.DirectoryDictProperty(lambda obj: os.path.join(obj.absolute_path, 'parameter'))
changed = fsproperty.FileBooleanProperty(lambda obj: os.path.join(obj.absolute_path, "changed"))
prepared = fsproperty.FileBooleanProperty(lambda obj: os.path.join(obj.absolute_path, "prepared"))
ran = fsproperty.FileBooleanProperty(lambda obj: os.path.join(obj.absolute_path, "ran"))

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@ -1,155 +0,0 @@
# -*- 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/>.
#
#
import os
import collections
import cdist
class FileList(collections.MutableSequence):
"""A list that stores it's state in a file.
"""
def __init__(self, path, initial=None):
self._path = path
if initial:
# delete existing file
os.unlink(self._path)
for i in initial:
self.append(i)
def __read(self):
lines = []
try:
with open(self._path) as fd:
for line in fd:
lines.append(line.rstrip('\n'))
except EnvironmentError as e:
# error ignored
pass
return lines
def __write(self, lines):
try:
with open(self._path, 'w') as fd:
for line in lines:
fd.write(str(line) + '\n')
except EnvironmentError as e:
# error ignored
raise
def __repr__(self):
return repr(list(self))
def __getitem__(self, index):
return self.__read()[index]
def __setitem__(self, index, value):
lines = self.__read()
lines[index] = value
self.__write(lines)
def __delitem__(self, index):
lines = self.__read()
del lines[index]
self.__write(lines)
def __len__(self):
lines = self.__read()
return len(lines)
def insert(self, index, value):
lines = self.__read()
lines.insert(index, value)
self.__write(lines)
def sort(self):
lines = sorted(self)
self.__write(lines)
class FileListProperty(FileList):
# Descriptor Protocol
def __get__(self, obj, objtype=None):
if obj is None:
return self.__class__
return self
def __set__(self, obj, value):
os.unlink(self._path)
for item in value:
self.append(item)
def __delete__(self, obj):
raise AttributeError("can't delete attribute")
class DirectoryDict(collections.MutableMapping):
"""A dict that stores it's state in a directory.
"""
def __init__(self, path, dict=None, **kwargs):
self._path = path
if dict is not None:
self.update(dict)
if len(kwargs):
self.update(kwargs)
def __repr__(self):
return repr(dict(self))
def __getitem__(self, key):
try:
with open(os.path.join(self._path, key), "r") as fd:
return fd.read().rstrip('\n')
except EnvironmentError:
raise KeyError(key)
def __setitem__(self, key, value):
with open(os.path.join(self._path, key), "w") as fd:
fd.write(str(value))
def __delitem__(self, key):
os.remove(os.path.join(self._path, key))
def __iter__(self):
return iter(os.listdir(self._path))
def __len__(self):
return len(os.listdir(self._path))
class DirectoryDictProperty(DirectoryDict):
# Descriptor Protocol
def __get__(self, obj, objtype=None):
if obj is None:
return self.__class__
return self
def __set__(self, obj, value):
for name in self.keys():
del self[name]
if value is not None:
self.update(value)
def __delete__(self, obj):
raise AttributeError("can't delete attribute")

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@ -0,0 +1,117 @@
# -*- 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/>.
#
#
import os
import tempfile
import unittest
import shutil
import cdist.core
import os.path as op
my_dir = op.abspath(op.dirname(__file__))
fixtures = op.join(my_dir, 'fixtures')
object_base_path = op.join(fixtures, 'object')
type_base_path = op.join(fixtures, 'type')
class ObjectClassTestCase(unittest.TestCase):
def test_list_object_names(self):
object_names = list(cdist.core.Object.list_object_names(object_base_path))
self.assertEqual(object_names, ['__first/man', '__second/on-the', '__third/moon'])
def test_list_type_names(self):
type_names = list(cdist.core.Object.list_type_names(object_base_path))
self.assertEqual(type_names, ['__first', '__second', '__third'])
def test_list_objects(self):
objects = list(cdist.core.Object.list_objects(object_base_path, type_base_path))
objects_expected = [
cdist.core.Object(cdist.core.Type(type_base_path, '__first'), object_base_path, 'man'),
cdist.core.Object(cdist.core.Type(type_base_path, '__second'), object_base_path, 'on-the'),
cdist.core.Object(cdist.core.Type(type_base_path, '__third'), object_base_path, 'moon'),
]
self.assertEqual(objects, objects_expected)
class ObjectTestCase(unittest.TestCase):
def setUp(self):
self.cdist_type = cdist.core.Type(type_base_path, '__third')
self.cdist_object = cdist.core.Object(self.cdist_type, object_base_path, 'moon')
def tearDown(self):
self.cdist_object.changed = False
self.cdist_object.prepared = False
self.cdist_object.ran = False
def test_name(self):
self.assertEqual(self.cdist_object.name, '__third/moon')
def test_object_id(self):
self.assertEqual(self.cdist_object.object_id, 'moon')
def test_path(self):
self.assertEqual(self.cdist_object.path, '__third/moon/.cdist')
def test_absolute_path(self):
self.assertEqual(self.cdist_object.absolute_path, os.path.join(object_base_path, '__third/moon/.cdist'))
def test_code_local_path(self):
self.assertEqual(self.cdist_object.code_local_path, '__third/moon/.cdist/code-local')
def test_code_remote_path(self):
self.assertEqual(self.cdist_object.code_remote_path, '__third/moon/.cdist/code-remote')
def test_parameter_path(self):
self.assertEqual(self.cdist_object.parameter_path, '__third/moon/.cdist/parameter')
def test_explorer_path(self):
self.assertEqual(self.cdist_object.explorer_path, '__third/moon/.cdist/explorer')
def test_parameters(self):
expected_parameters = {'planet': 'Saturn', 'name': 'Prometheus'}
self.assertEqual(self.cdist_object.parameters, expected_parameters)
def test_requirements(self):
expected = []
self.assertEqual(list(self.cdist_object.requirements), expected)
def test_changed(self):
self.assertFalse(self.cdist_object.changed)
def test_changed_after_changing(self):
self.cdist_object.changed = True
self.assertTrue(self.cdist_object.changed)
def test_prepared(self):
self.assertFalse(self.cdist_object.prepared)
def test_prepared_after_changing(self):
self.cdist_object.prepared = True
self.assertTrue(self.cdist_object.prepared)
def test_ran(self):
self.assertFalse(self.cdist_object.ran)
def test_ran_after_changing(self):
self.cdist_object.ran = True
self.assertTrue(self.cdist_object.ran)

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@ -0,0 +1 @@
Prometheus

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@ -1,46 +0,0 @@
# -*- 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/>.
#
#
import os
import tempfile
import unittest
import shutil
import os.path as op
my_dir = op.abspath(op.dirname(__file__))
base_path = op.join(my_dir, 'fixtures')
class ObjectTestCase(unittest.TestCase):
def setUp(self):
# FIXME: use defined set of types for testing?
# FIXME: generate object tree or use predefined?
self.object_base_dir = tempfile.mkdtemp()
def tearDown(self):
shutil.rmtree(self.temp_dir)
'''
suite = unittest.TestLoader().loadTestsFromTestCase(ObjectTestCase)
def suite():
tests = []
return unittest.TestSuite(map(ObjectTestCase, tests))
'''

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@ -0,0 +1,146 @@
# -*- 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/>.
#
#
import os
import unittest
import cdist.core
import os.path as op
my_dir = op.abspath(op.dirname(__file__))
fixtures = op.join(my_dir, 'fixtures')
class TypeTestCase(unittest.TestCase):
def test_list_type_names(self):
base_path = op.join(fixtures, 'list_types')
type_names = cdist.core.Type.list_type_names(base_path)
self.assertEqual(type_names, ['__first', '__second', '__third'])
def test_list_types(self):
base_path = op.join(fixtures, 'list_types')
types = list(cdist.core.Type.list_types(base_path))
types_expected = [
cdist.core.Type(base_path, '__first'),
cdist.core.Type(base_path, '__second'),
cdist.core.Type(base_path, '__third'),
]
self.assertEqual(types, types_expected)
def test_only_one_instance(self):
base_path = fixtures
cdist_type1 = cdist.core.Type(base_path, '__name_path')
cdist_type2 = cdist.core.Type(base_path, '__name_path')
self.assertEqual(id(cdist_type1), id(cdist_type2))
def test_name(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.name, '__name_path')
def test_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.path, '__name_path')
def test_absolute_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.absolute_path, os.path.join(base_path, '__name_path'))
def test_manifest_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.manifest_path, os.path.join('__name_path', 'manifest'))
def test_explorer_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.explorer_path, os.path.join('__name_path', 'explorer'))
def test_gencode_local_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.gencode_local_path, os.path.join('__name_path', 'gencode-local'))
def test_gencode_remote_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.gencode_remote_path, os.path.join('__name_path', 'gencode-remote'))
def test_singleton_is_singleton(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__singleton')
self.assertTrue(cdist_type.is_singleton)
def test_not_singleton_is_singleton(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__not_singleton')
self.assertFalse(cdist_type.is_singleton)
def test_install_is_install(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__install')
self.assertTrue(cdist_type.is_install)
def test_not_install_is_install(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__not_install')
self.assertFalse(cdist_type.is_install)
def test_with_explorers(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__with_explorers')
self.assertEqual(cdist_type.explorers, ['whatever'])
def test_without_explorers(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__without_explorers')
self.assertEqual(cdist_type.explorers, [])
def test_with_required_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__with_required_parameters')
self.assertEqual(cdist_type.required_parameters, ['required1', 'required2'])
def test_without_required_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__without_required_parameters')
self.assertEqual(cdist_type.required_parameters, [])
def test_with_optional_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__with_optional_parameters')
self.assertEqual(cdist_type.optional_parameters, ['optional1', 'optional2'])
def test_without_optional_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__without_optional_parameters')
self.assertEqual(cdist_type.optional_parameters, [])
'''
suite = unittest.TestLoader().loadTestsFromTestCase(ObjectTestCase)
def suite():
tests = []
return unittest.TestSuite(map(ObjectTestCase, tests))
'''

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@ -1,146 +0,0 @@
# -*- 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/>.
#
#
import os
import unittest
import cdist.core
import os.path as op
my_dir = op.abspath(op.dirname(__file__))
fixtures = op.join(my_dir, 'fixtures')
class TypeTestCase(unittest.TestCase):
def test_list_type_names(self):
base_path = op.join(fixtures, 'list_types')
type_names = cdist.core.Type.list_type_names(base_path)
self.assertEqual(type_names, ['__first', '__second', '__third'])
def test_list_types(self):
base_path = op.join(fixtures, 'list_types')
types = list(cdist.core.Type.list_types(base_path))
types_expected = [
cdist.core.Type(base_path, '__first'),
cdist.core.Type(base_path, '__second'),
cdist.core.Type(base_path, '__third'),
]
self.assertEqual(types, types_expected)
def test_only_one_instance(self):
base_path = fixtures
cdist_type1 = cdist.core.Type(base_path, '__name_path')
cdist_type2 = cdist.core.Type(base_path, '__name_path')
self.assertEqual(id(cdist_type1), id(cdist_type2))
def test_name(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.name, '__name_path')
def test_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.path, '__name_path')
def test_absolute_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.absolute_path, os.path.join(base_path, '__name_path'))
def test_manifest_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.manifest_path, os.path.join('__name_path', 'manifest'))
def test_explorer_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.explorer_path, os.path.join('__name_path', 'explorer'))
def test_gencode_local_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.gencode_local_path, os.path.join('__name_path', 'gencode-local'))
def test_gencode_remote_path(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__name_path')
self.assertEqual(cdist_type.gencode_remote_path, os.path.join('__name_path', 'gencode-remote'))
def test_singleton_is_singleton(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__singleton')
self.assertTrue(cdist_type.is_singleton)
def test_not_singleton_is_singleton(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__not_singleton')
self.assertFalse(cdist_type.is_singleton)
def test_install_is_install(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__install')
self.assertTrue(cdist_type.is_install)
def test_not_install_is_install(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__not_install')
self.assertFalse(cdist_type.is_install)
def test_with_explorers(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__with_explorers')
self.assertEqual(cdist_type.explorers, ['whatever'])
def test_without_explorers(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__without_explorers')
self.assertEqual(cdist_type.explorers, [])
def test_with_required_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__with_required_parameters')
self.assertEqual(cdist_type.required_parameters, ['required1', 'required2'])
def test_without_required_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__without_required_parameters')
self.assertEqual(cdist_type.required_parameters, [])
def test_with_optional_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__with_optional_parameters')
self.assertEqual(cdist_type.optional_parameters, ['optional1', 'optional2'])
def test_without_optional_parameters(self):
base_path = fixtures
cdist_type = cdist.core.Type(base_path, '__without_optional_parameters')
self.assertEqual(cdist_type.optional_parameters, [])
'''
suite = unittest.TestLoader().loadTestsFromTestCase(ObjectTestCase)
def suite():
tests = []
return unittest.TestSuite(map(ObjectTestCase, tests))
'''

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@ -0,0 +1,272 @@
# -*- 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/>.
#
#
import os
import collections
import cdist
class AbsolutePathRequiredError(cdist.Error):
def __init__(self, path):
self.path = path
def __str__(self):
return 'Absolute path required, got: %s' % self.path
class FileList(collections.MutableSequence):
"""A list that stores it's state in a file.
"""
def __init__(self, path, initial=None):
if not os.path.isabs(path):
raise AbsolutePathRequiredError(path)
self.path = path
if initial:
# delete existing file
os.unlink(self.path)
for i in initial:
self.append(i)
def __read(self):
lines = []
try:
with open(self.path) as fd:
for line in fd:
lines.append(line.rstrip('\n'))
except EnvironmentError as e:
# error ignored
pass
return lines
def __write(self, lines):
try:
with open(self.path, 'w') as fd:
for line in lines:
fd.write(str(line) + '\n')
except EnvironmentError as e:
# error ignored
raise
def __repr__(self):
return repr(list(self))
def __getitem__(self, index):
return self.__read()[index]
def __setitem__(self, index, value):
lines = self.__read()
lines[index] = value
self.__write(lines)
def __delitem__(self, index):
lines = self.__read()
del lines[index]
self.__write(lines)
def __len__(self):
lines = self.__read()
return len(lines)
def insert(self, index, value):
lines = self.__read()
lines.insert(index, value)
self.__write(lines)
def sort(self):
lines = sorted(self)
self.__write(lines)
class FileListProperty(FileList):
def __init__(self, path):
"""
:param path: string or callable
Usage:
class Foo(object):
parameters = DirectoryDictProperty(lambda obj: os.path.join(obj.absolute_path, 'parameter'))
other_dict = DirectoryDictProperty('/tmp/folder')
def __init__(self):
self.absolute_path = '/tmp/foo'
"""
self.path = None
self.__path = path
def _set_path(self, *args, **kwargs):
if self.path is None:
path = self.__path
if callable(path):
path = path(*args, **kwargs)
if not os.path.isabs(path):
raise AbsolutePathRequiredError(path)
self.path = path
# Descriptor Protocol
def __get__(self, obj, objtype=None):
if obj is None:
return self.__class__
self._set_path(obj)
return self
def __set__(self, obj, value):
self._set_path(obj)
os.unlink(self.path)
for item in value:
self.append(item)
def __delete__(self, obj):
raise AttributeError("can't delete attribute")
class DirectoryDict(collections.MutableMapping):
"""A dict that stores it's state in a directory.
"""
def __init__(self, path, initial=None, **kwargs):
if not os.path.isabs(path):
raise AbsolutePathRequiredError(path)
self.path = path
if initial is not None:
self.update(initial)
if kwargs:
self.update(kwargs)
def __repr__(self):
return repr(dict(self))
def __getitem__(self, key):
try:
with open(os.path.join(self.path, key), "r") as fd:
return fd.read().rstrip('\n')
except EnvironmentError:
raise KeyError(key)
def __setitem__(self, key, value):
with open(os.path.join(self.path, key), "w") as fd:
fd.write(str(value))
def __delitem__(self, key):
os.remove(os.path.join(self.path, key))
def __iter__(self):
return iter(os.listdir(self.path))
def __len__(self):
return len(os.listdir(self.path))
class DirectoryDictProperty(DirectoryDict):
def __init__(self, path):
"""
:param path: string or callable
Usage:
class Foo(object):
parameters = DirectoryDictProperty(lambda obj: os.path.join(obj.absolute_path, 'parameter'))
other_dict = DirectoryDictProperty('/tmp/folder')
def __init__(self):
self.absolute_path = '/tmp/foo'
"""
self.path = None
self.__path = path
def _set_path(self, *args, **kwargs):
if self.path is None:
path = self.__path
if callable(path):
path = path(*args, **kwargs)
if not os.path.isabs(path):
raise AbsolutePathRequiredError(path)
self.path = path
# Descriptor Protocol
def __get__(self, obj, objtype=None):
if obj is None:
return self.__class__
self._set_path(obj)
return self
def __set__(self, obj, value):
self._set_path(obj)
if value is not None:
for name in self.keys():
del self[name]
self.update(value)
def __delete__(self, obj):
raise AttributeError("can't delete attribute")
class FileBooleanProperty(object):
def __init__(self, path):
"""
:param path: string or callable
Usage:
class Foo(object):
changed = FileBoolean(lambda obj: os.path.join(obj.absolute_path, 'changed'))
other_boolean = FileBoolean('/tmp/other_boolean')
def __init__(self):
self.absolute_path = '/tmp/foo_boolean'
"""
self._path = path
def _get_path(self, *args, **kwargs):
path = self._path
if callable(path):
return path(*args, **kwargs)
if not os.path.isabs(path):
raise AbsolutePathRequiredError(path)
return path
# Descriptor Protocol
def __get__(self, obj, objtype=None):
if obj is None:
return self.__class__
path = self._get_path(obj)
return os.path.isfile(path)
def __set__(self, obj, value):
path = self._get_path(obj)
if value:
open(path, "w").close()
else:
try:
os.remove(path)
except EnvironmentError:
# ignore
pass
def __delete__(self, obj):
raise AttributeError("can't delete attribute")