root / lib / objects.py @ 89b70f39
History | View | Annotate | Download (29.6 kB)
1 | 2f31098c | Iustin Pop | #
|
---|---|---|---|
2 | a8083063 | Iustin Pop | #
|
3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
|
5 | a8083063 | Iustin Pop | #
|
6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
|
7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
|
8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
|
9 | a8083063 | Iustin Pop | # (at your option) any later version.
|
10 | a8083063 | Iustin Pop | #
|
11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
|
12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | a8083063 | Iustin Pop | # General Public License for more details.
|
15 | a8083063 | Iustin Pop | #
|
16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
|
17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
|
18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | a8083063 | Iustin Pop | # 02110-1301, USA.
|
20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Transportable objects for Ganeti.
|
23 | a8083063 | Iustin Pop |
|
24 | a8083063 | Iustin Pop | This module provides small, mostly data-only objects which are safe to
|
25 | a8083063 | Iustin Pop | pass to and from external parties.
|
26 | a8083063 | Iustin Pop |
|
27 | a8083063 | Iustin Pop | """
|
28 | a8083063 | Iustin Pop | |
29 | 7260cfbe | Iustin Pop | # pylint: disable-msg=E0203,W0201
|
30 | 6c881c52 | Iustin Pop | |
31 | 6c881c52 | Iustin Pop | # E0203: Access to member %r before its definition, since we use
|
32 | 6c881c52 | Iustin Pop | # objects.py which doesn't explicitely initialise its members
|
33 | 6c881c52 | Iustin Pop | |
34 | 7260cfbe | Iustin Pop | # W0201: Attribute '%s' defined outside __init__
|
35 | a8083063 | Iustin Pop | |
36 | a8083063 | Iustin Pop | import ConfigParser |
37 | 5c947f38 | Iustin Pop | import re |
38 | 5bf7b5cf | Iustin Pop | import copy |
39 | d5835922 | Michael Hanselmann | from cStringIO import StringIO |
40 | a8083063 | Iustin Pop | |
41 | a8083063 | Iustin Pop | from ganeti import errors |
42 | 5c947f38 | Iustin Pop | from ganeti import constants |
43 | a8083063 | Iustin Pop | |
44 | a8083063 | Iustin Pop | |
45 | a8083063 | Iustin Pop | __all__ = ["ConfigObject", "ConfigData", "NIC", "Disk", "Instance", |
46 | abe609b2 | Guido Trotter | "OS", "Node", "Cluster", "FillDict"] |
47 | a8083063 | Iustin Pop | |
48 | d693c864 | Iustin Pop | _TIMESTAMPS = ["ctime", "mtime"] |
49 | e1dcc53a | Iustin Pop | _UUID = ["uuid"]
|
50 | 96acbc09 | Michael Hanselmann | |
51 | e11ddf13 | Iustin Pop | def FillDict(defaults_dict, custom_dict, skip_keys=None): |
52 | 29921401 | Iustin Pop | """Basic function to apply settings on top a default dict.
|
53 | abe609b2 | Guido Trotter |
|
54 | 29921401 | Iustin Pop | @type defaults_dict: dict
|
55 | 29921401 | Iustin Pop | @param defaults_dict: dictionary holding the default values
|
56 | 29921401 | Iustin Pop | @type custom_dict: dict
|
57 | 29921401 | Iustin Pop | @param custom_dict: dictionary holding customized value
|
58 | 7736a5f2 | Iustin Pop | @type skip_keys: list
|
59 | 7736a5f2 | Iustin Pop | @param skip_keys: which keys not to fill
|
60 | 29921401 | Iustin Pop | @rtype: dict
|
61 | 29921401 | Iustin Pop | @return: dict with the 'full' values
|
62 | abe609b2 | Guido Trotter |
|
63 | 29921401 | Iustin Pop | """
|
64 | 29921401 | Iustin Pop | ret_dict = copy.deepcopy(defaults_dict) |
65 | 29921401 | Iustin Pop | ret_dict.update(custom_dict) |
66 | e11ddf13 | Iustin Pop | if skip_keys:
|
67 | e11ddf13 | Iustin Pop | for k in skip_keys: |
68 | e11ddf13 | Iustin Pop | try:
|
69 | e11ddf13 | Iustin Pop | del ret_dict[k]
|
70 | e11ddf13 | Iustin Pop | except KeyError: |
71 | e11ddf13 | Iustin Pop | pass
|
72 | 29921401 | Iustin Pop | return ret_dict
|
73 | a8083063 | Iustin Pop | |
74 | 6e34b628 | Guido Trotter | |
75 | 6e34b628 | Guido Trotter | def UpgradeGroupedParams(target, defaults): |
76 | 6e34b628 | Guido Trotter | """Update all groups for the target parameter.
|
77 | 6e34b628 | Guido Trotter |
|
78 | 6e34b628 | Guido Trotter | @type target: dict of dicts
|
79 | 6e34b628 | Guido Trotter | @param target: {group: {parameter: value}}
|
80 | 6e34b628 | Guido Trotter | @type defaults: dict
|
81 | 6e34b628 | Guido Trotter | @param defaults: default parameter values
|
82 | 6e34b628 | Guido Trotter |
|
83 | 6e34b628 | Guido Trotter | """
|
84 | 6e34b628 | Guido Trotter | if target is None: |
85 | 6e34b628 | Guido Trotter | target = {constants.PP_DEFAULT: defaults} |
86 | 6e34b628 | Guido Trotter | else:
|
87 | 6e34b628 | Guido Trotter | for group in target: |
88 | 6e34b628 | Guido Trotter | target[group] = FillDict(defaults, target[group]) |
89 | 6e34b628 | Guido Trotter | return target
|
90 | 6e34b628 | Guido Trotter | |
91 | 6e34b628 | Guido Trotter | |
92 | a8083063 | Iustin Pop | class ConfigObject(object): |
93 | a8083063 | Iustin Pop | """A generic config object.
|
94 | a8083063 | Iustin Pop |
|
95 | a8083063 | Iustin Pop | It has the following properties:
|
96 | a8083063 | Iustin Pop |
|
97 | a8083063 | Iustin Pop | - provides somewhat safe recursive unpickling and pickling for its classes
|
98 | a8083063 | Iustin Pop | - unset attributes which are defined in slots are always returned
|
99 | a8083063 | Iustin Pop | as None instead of raising an error
|
100 | a8083063 | Iustin Pop |
|
101 | a8083063 | Iustin Pop | Classes derived from this must always declare __slots__ (we use many
|
102 | 55224070 | Guido Trotter | config objects and the memory reduction is useful)
|
103 | a8083063 | Iustin Pop |
|
104 | a8083063 | Iustin Pop | """
|
105 | a8083063 | Iustin Pop | __slots__ = [] |
106 | a8083063 | Iustin Pop | |
107 | a8083063 | Iustin Pop | def __init__(self, **kwargs): |
108 | 319856a9 | Michael Hanselmann | for k, v in kwargs.iteritems(): |
109 | 319856a9 | Michael Hanselmann | setattr(self, k, v) |
110 | a8083063 | Iustin Pop | |
111 | a8083063 | Iustin Pop | def __getattr__(self, name): |
112 | a8083063 | Iustin Pop | if name not in self.__slots__: |
113 | 3ecf6786 | Iustin Pop | raise AttributeError("Invalid object attribute %s.%s" % |
114 | 3ecf6786 | Iustin Pop | (type(self).__name__, name)) |
115 | a8083063 | Iustin Pop | return None |
116 | a8083063 | Iustin Pop | |
117 | a8083063 | Iustin Pop | def __setstate__(self, state): |
118 | a8083063 | Iustin Pop | for name in state: |
119 | a8083063 | Iustin Pop | if name in self.__slots__: |
120 | a8083063 | Iustin Pop | setattr(self, name, state[name]) |
121 | a8083063 | Iustin Pop | |
122 | ff9c047c | Iustin Pop | def ToDict(self): |
123 | ff9c047c | Iustin Pop | """Convert to a dict holding only standard python types.
|
124 | ff9c047c | Iustin Pop |
|
125 | ff9c047c | Iustin Pop | The generic routine just dumps all of this object's attributes in
|
126 | ff9c047c | Iustin Pop | a dict. It does not work if the class has children who are
|
127 | ff9c047c | Iustin Pop | ConfigObjects themselves (e.g. the nics list in an Instance), in
|
128 | ff9c047c | Iustin Pop | which case the object should subclass the function in order to
|
129 | ff9c047c | Iustin Pop | make sure all objects returned are only standard python types.
|
130 | ff9c047c | Iustin Pop |
|
131 | ff9c047c | Iustin Pop | """
|
132 | 4c14965f | Guido Trotter | result = {} |
133 | 4c14965f | Guido Trotter | for name in self.__slots__: |
134 | 4c14965f | Guido Trotter | value = getattr(self, name, None) |
135 | 4c14965f | Guido Trotter | if value is not None: |
136 | 4c14965f | Guido Trotter | result[name] = value |
137 | 4c14965f | Guido Trotter | return result
|
138 | 4c14965f | Guido Trotter | |
139 | 4c14965f | Guido Trotter | __getstate__ = ToDict |
140 | ff9c047c | Iustin Pop | |
141 | ff9c047c | Iustin Pop | @classmethod
|
142 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
143 | ff9c047c | Iustin Pop | """Create an object from a dictionary.
|
144 | ff9c047c | Iustin Pop |
|
145 | ff9c047c | Iustin Pop | This generic routine takes a dict, instantiates a new instance of
|
146 | ff9c047c | Iustin Pop | the given class, and sets attributes based on the dict content.
|
147 | ff9c047c | Iustin Pop |
|
148 | ff9c047c | Iustin Pop | As for `ToDict`, this does not work if the class has children
|
149 | ff9c047c | Iustin Pop | who are ConfigObjects themselves (e.g. the nics list in an
|
150 | ff9c047c | Iustin Pop | Instance), in which case the object should subclass the function
|
151 | ff9c047c | Iustin Pop | and alter the objects.
|
152 | ff9c047c | Iustin Pop |
|
153 | ff9c047c | Iustin Pop | """
|
154 | ff9c047c | Iustin Pop | if not isinstance(val, dict): |
155 | ff9c047c | Iustin Pop | raise errors.ConfigurationError("Invalid object passed to FromDict:" |
156 | ff9c047c | Iustin Pop | " expected dict, got %s" % type(val)) |
157 | 319856a9 | Michael Hanselmann | val_str = dict([(str(k), v) for k, v in val.iteritems()]) |
158 | 7260cfbe | Iustin Pop | obj = cls(**val_str) # pylint: disable-msg=W0142
|
159 | ff9c047c | Iustin Pop | return obj
|
160 | ff9c047c | Iustin Pop | |
161 | ff9c047c | Iustin Pop | @staticmethod
|
162 | ff9c047c | Iustin Pop | def _ContainerToDicts(container): |
163 | ff9c047c | Iustin Pop | """Convert the elements of a container to standard python types.
|
164 | ff9c047c | Iustin Pop |
|
165 | ff9c047c | Iustin Pop | This method converts a container with elements derived from
|
166 | ff9c047c | Iustin Pop | ConfigData to standard python types. If the container is a dict,
|
167 | ff9c047c | Iustin Pop | we don't touch the keys, only the values.
|
168 | ff9c047c | Iustin Pop |
|
169 | ff9c047c | Iustin Pop | """
|
170 | ff9c047c | Iustin Pop | if isinstance(container, dict): |
171 | ff9c047c | Iustin Pop | ret = dict([(k, v.ToDict()) for k, v in container.iteritems()]) |
172 | ff9c047c | Iustin Pop | elif isinstance(container, (list, tuple, set, frozenset)): |
173 | ff9c047c | Iustin Pop | ret = [elem.ToDict() for elem in container] |
174 | ff9c047c | Iustin Pop | else:
|
175 | ff9c047c | Iustin Pop | raise TypeError("Invalid type %s passed to _ContainerToDicts" % |
176 | ff9c047c | Iustin Pop | type(container))
|
177 | ff9c047c | Iustin Pop | return ret
|
178 | ff9c047c | Iustin Pop | |
179 | ff9c047c | Iustin Pop | @staticmethod
|
180 | ff9c047c | Iustin Pop | def _ContainerFromDicts(source, c_type, e_type): |
181 | ff9c047c | Iustin Pop | """Convert a container from standard python types.
|
182 | ff9c047c | Iustin Pop |
|
183 | ff9c047c | Iustin Pop | This method converts a container with standard python types to
|
184 | ff9c047c | Iustin Pop | ConfigData objects. If the container is a dict, we don't touch the
|
185 | ff9c047c | Iustin Pop | keys, only the values.
|
186 | ff9c047c | Iustin Pop |
|
187 | ff9c047c | Iustin Pop | """
|
188 | ff9c047c | Iustin Pop | if not isinstance(c_type, type): |
189 | ff9c047c | Iustin Pop | raise TypeError("Container type %s passed to _ContainerFromDicts is" |
190 | ff9c047c | Iustin Pop | " not a type" % type(c_type)) |
191 | ff9c047c | Iustin Pop | if c_type is dict: |
192 | ff9c047c | Iustin Pop | ret = dict([(k, e_type.FromDict(v)) for k, v in source.iteritems()]) |
193 | ff9c047c | Iustin Pop | elif c_type in (list, tuple, set, frozenset): |
194 | ff9c047c | Iustin Pop | ret = c_type([e_type.FromDict(elem) for elem in source]) |
195 | ff9c047c | Iustin Pop | else:
|
196 | ff9c047c | Iustin Pop | raise TypeError("Invalid container type %s passed to" |
197 | ff9c047c | Iustin Pop | " _ContainerFromDicts" % c_type)
|
198 | ff9c047c | Iustin Pop | return ret
|
199 | ff9c047c | Iustin Pop | |
200 | e8d563f3 | Iustin Pop | def Copy(self): |
201 | e8d563f3 | Iustin Pop | """Makes a deep copy of the current object and its children.
|
202 | e8d563f3 | Iustin Pop |
|
203 | e8d563f3 | Iustin Pop | """
|
204 | e8d563f3 | Iustin Pop | dict_form = self.ToDict()
|
205 | e8d563f3 | Iustin Pop | clone_obj = self.__class__.FromDict(dict_form)
|
206 | e8d563f3 | Iustin Pop | return clone_obj
|
207 | e8d563f3 | Iustin Pop | |
208 | ff9c047c | Iustin Pop | def __repr__(self): |
209 | ff9c047c | Iustin Pop | """Implement __repr__ for ConfigObjects."""
|
210 | ff9c047c | Iustin Pop | return repr(self.ToDict()) |
211 | ff9c047c | Iustin Pop | |
212 | 560428be | Guido Trotter | def UpgradeConfig(self): |
213 | 560428be | Guido Trotter | """Fill defaults for missing configuration values.
|
214 | 560428be | Guido Trotter |
|
215 | 90d726a8 | Iustin Pop | This method will be called at configuration load time, and its
|
216 | 90d726a8 | Iustin Pop | implementation will be object dependent.
|
217 | 560428be | Guido Trotter |
|
218 | 560428be | Guido Trotter | """
|
219 | 560428be | Guido Trotter | pass
|
220 | 560428be | Guido Trotter | |
221 | a8083063 | Iustin Pop | |
222 | ec29fe40 | Iustin Pop | class TaggableObject(ConfigObject): |
223 | 5c947f38 | Iustin Pop | """An generic class supporting tags.
|
224 | 5c947f38 | Iustin Pop |
|
225 | 5c947f38 | Iustin Pop | """
|
226 | ec29fe40 | Iustin Pop | __slots__ = ConfigObject.__slots__ + ["tags"]
|
227 | b5e5632e | Iustin Pop | VALID_TAG_RE = re.compile("^[\w.+*/:@-]+$")
|
228 | 2057f6c7 | Iustin Pop | |
229 | b5e5632e | Iustin Pop | @classmethod
|
230 | b5e5632e | Iustin Pop | def ValidateTag(cls, tag): |
231 | 5c947f38 | Iustin Pop | """Check if a tag is valid.
|
232 | 5c947f38 | Iustin Pop |
|
233 | 5c947f38 | Iustin Pop | If the tag is invalid, an errors.TagError will be raised. The
|
234 | 5c947f38 | Iustin Pop | function has no return value.
|
235 | 5c947f38 | Iustin Pop |
|
236 | 5c947f38 | Iustin Pop | """
|
237 | 5c947f38 | Iustin Pop | if not isinstance(tag, basestring): |
238 | 3ecf6786 | Iustin Pop | raise errors.TagError("Invalid tag type (not a string)") |
239 | 5c947f38 | Iustin Pop | if len(tag) > constants.MAX_TAG_LEN: |
240 | 319856a9 | Michael Hanselmann | raise errors.TagError("Tag too long (>%d characters)" % |
241 | 319856a9 | Michael Hanselmann | constants.MAX_TAG_LEN) |
242 | 5c947f38 | Iustin Pop | if not tag: |
243 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tags cannot be empty") |
244 | b5e5632e | Iustin Pop | if not cls.VALID_TAG_RE.match(tag): |
245 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tag contains invalid characters") |
246 | 5c947f38 | Iustin Pop | |
247 | 5c947f38 | Iustin Pop | def GetTags(self): |
248 | 5c947f38 | Iustin Pop | """Return the tags list.
|
249 | 5c947f38 | Iustin Pop |
|
250 | 5c947f38 | Iustin Pop | """
|
251 | 5c947f38 | Iustin Pop | tags = getattr(self, "tags", None) |
252 | 5c947f38 | Iustin Pop | if tags is None: |
253 | 5c947f38 | Iustin Pop | tags = self.tags = set() |
254 | 5c947f38 | Iustin Pop | return tags
|
255 | 5c947f38 | Iustin Pop | |
256 | 5c947f38 | Iustin Pop | def AddTag(self, tag): |
257 | 5c947f38 | Iustin Pop | """Add a new tag.
|
258 | 5c947f38 | Iustin Pop |
|
259 | 5c947f38 | Iustin Pop | """
|
260 | 5c947f38 | Iustin Pop | self.ValidateTag(tag)
|
261 | 5c947f38 | Iustin Pop | tags = self.GetTags()
|
262 | 5c947f38 | Iustin Pop | if len(tags) >= constants.MAX_TAGS_PER_OBJ: |
263 | 3ecf6786 | Iustin Pop | raise errors.TagError("Too many tags") |
264 | 5c947f38 | Iustin Pop | self.GetTags().add(tag)
|
265 | 5c947f38 | Iustin Pop | |
266 | 5c947f38 | Iustin Pop | def RemoveTag(self, tag): |
267 | 5c947f38 | Iustin Pop | """Remove a tag.
|
268 | 5c947f38 | Iustin Pop |
|
269 | 5c947f38 | Iustin Pop | """
|
270 | 5c947f38 | Iustin Pop | self.ValidateTag(tag)
|
271 | 5c947f38 | Iustin Pop | tags = self.GetTags()
|
272 | 5c947f38 | Iustin Pop | try:
|
273 | 5c947f38 | Iustin Pop | tags.remove(tag) |
274 | 5c947f38 | Iustin Pop | except KeyError: |
275 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tag not found") |
276 | 5c947f38 | Iustin Pop | |
277 | ff9c047c | Iustin Pop | def ToDict(self): |
278 | ff9c047c | Iustin Pop | """Taggable-object-specific conversion to standard python types.
|
279 | ff9c047c | Iustin Pop |
|
280 | ff9c047c | Iustin Pop | This replaces the tags set with a list.
|
281 | ff9c047c | Iustin Pop |
|
282 | ff9c047c | Iustin Pop | """
|
283 | ff9c047c | Iustin Pop | bo = super(TaggableObject, self).ToDict() |
284 | ff9c047c | Iustin Pop | |
285 | ff9c047c | Iustin Pop | tags = bo.get("tags", None) |
286 | ff9c047c | Iustin Pop | if isinstance(tags, set): |
287 | ff9c047c | Iustin Pop | bo["tags"] = list(tags) |
288 | ff9c047c | Iustin Pop | return bo
|
289 | ff9c047c | Iustin Pop | |
290 | ff9c047c | Iustin Pop | @classmethod
|
291 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
292 | ff9c047c | Iustin Pop | """Custom function for instances.
|
293 | ff9c047c | Iustin Pop |
|
294 | ff9c047c | Iustin Pop | """
|
295 | ff9c047c | Iustin Pop | obj = super(TaggableObject, cls).FromDict(val)
|
296 | ff9c047c | Iustin Pop | if hasattr(obj, "tags") and isinstance(obj.tags, list): |
297 | ff9c047c | Iustin Pop | obj.tags = set(obj.tags)
|
298 | ff9c047c | Iustin Pop | return obj
|
299 | ff9c047c | Iustin Pop | |
300 | 5c947f38 | Iustin Pop | |
301 | a8083063 | Iustin Pop | class ConfigData(ConfigObject): |
302 | a8083063 | Iustin Pop | """Top-level config object."""
|
303 | 016d04b3 | Michael Hanselmann | __slots__ = (["version", "cluster", "nodes", "instances", "serial_no"] + |
304 | 016d04b3 | Michael Hanselmann | _TIMESTAMPS) |
305 | a8083063 | Iustin Pop | |
306 | ff9c047c | Iustin Pop | def ToDict(self): |
307 | ff9c047c | Iustin Pop | """Custom function for top-level config data.
|
308 | ff9c047c | Iustin Pop |
|
309 | ff9c047c | Iustin Pop | This just replaces the list of instances, nodes and the cluster
|
310 | ff9c047c | Iustin Pop | with standard python types.
|
311 | ff9c047c | Iustin Pop |
|
312 | ff9c047c | Iustin Pop | """
|
313 | ff9c047c | Iustin Pop | mydict = super(ConfigData, self).ToDict() |
314 | ff9c047c | Iustin Pop | mydict["cluster"] = mydict["cluster"].ToDict() |
315 | ff9c047c | Iustin Pop | for key in "nodes", "instances": |
316 | ff9c047c | Iustin Pop | mydict[key] = self._ContainerToDicts(mydict[key])
|
317 | ff9c047c | Iustin Pop | |
318 | ff9c047c | Iustin Pop | return mydict
|
319 | ff9c047c | Iustin Pop | |
320 | ff9c047c | Iustin Pop | @classmethod
|
321 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
322 | ff9c047c | Iustin Pop | """Custom function for top-level config data
|
323 | ff9c047c | Iustin Pop |
|
324 | ff9c047c | Iustin Pop | """
|
325 | ff9c047c | Iustin Pop | obj = super(ConfigData, cls).FromDict(val)
|
326 | ff9c047c | Iustin Pop | obj.cluster = Cluster.FromDict(obj.cluster) |
327 | ff9c047c | Iustin Pop | obj.nodes = cls._ContainerFromDicts(obj.nodes, dict, Node)
|
328 | ff9c047c | Iustin Pop | obj.instances = cls._ContainerFromDicts(obj.instances, dict, Instance)
|
329 | ff9c047c | Iustin Pop | return obj
|
330 | ff9c047c | Iustin Pop | |
331 | 90d726a8 | Iustin Pop | def UpgradeConfig(self): |
332 | 90d726a8 | Iustin Pop | """Fill defaults for missing configuration values.
|
333 | 90d726a8 | Iustin Pop |
|
334 | 90d726a8 | Iustin Pop | """
|
335 | 90d726a8 | Iustin Pop | self.cluster.UpgradeConfig()
|
336 | 90d726a8 | Iustin Pop | for node in self.nodes.values(): |
337 | 90d726a8 | Iustin Pop | node.UpgradeConfig() |
338 | 90d726a8 | Iustin Pop | for instance in self.instances.values(): |
339 | 90d726a8 | Iustin Pop | instance.UpgradeConfig() |
340 | 90d726a8 | Iustin Pop | |
341 | a8083063 | Iustin Pop | |
342 | a8083063 | Iustin Pop | class NIC(ConfigObject): |
343 | a8083063 | Iustin Pop | """Config object representing a network card."""
|
344 | 13f1af63 | Guido Trotter | __slots__ = ["mac", "ip", "bridge", "nicparams"] |
345 | a8083063 | Iustin Pop | |
346 | 255e19d4 | Guido Trotter | @classmethod
|
347 | 255e19d4 | Guido Trotter | def CheckParameterSyntax(cls, nicparams): |
348 | 255e19d4 | Guido Trotter | """Check the given parameters for validity.
|
349 | 255e19d4 | Guido Trotter |
|
350 | 255e19d4 | Guido Trotter | @type nicparams: dict
|
351 | 255e19d4 | Guido Trotter | @param nicparams: dictionary with parameter names/value
|
352 | 255e19d4 | Guido Trotter | @raise errors.ConfigurationError: when a parameter is not valid
|
353 | 255e19d4 | Guido Trotter |
|
354 | 255e19d4 | Guido Trotter | """
|
355 | 255e19d4 | Guido Trotter | if nicparams[constants.NIC_MODE] not in constants.NIC_VALID_MODES: |
356 | 255e19d4 | Guido Trotter | err = "Invalid nic mode: %s" % nicparams[constants.NIC_MODE]
|
357 | 255e19d4 | Guido Trotter | raise errors.ConfigurationError(err)
|
358 | 255e19d4 | Guido Trotter | |
359 | 0c9d32c1 | Guido Trotter | if (nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED and |
360 | 255e19d4 | Guido Trotter | not nicparams[constants.NIC_LINK]):
|
361 | 255e19d4 | Guido Trotter | err = "Missing bridged nic link"
|
362 | 255e19d4 | Guido Trotter | raise errors.ConfigurationError(err)
|
363 | 255e19d4 | Guido Trotter | |
364 | 13f1af63 | Guido Trotter | def UpgradeConfig(self): |
365 | 13f1af63 | Guido Trotter | """Fill defaults for missing configuration values.
|
366 | 13f1af63 | Guido Trotter |
|
367 | 13f1af63 | Guido Trotter | """
|
368 | 13f1af63 | Guido Trotter | if self.nicparams is None: |
369 | 13f1af63 | Guido Trotter | self.nicparams = {}
|
370 | 13f1af63 | Guido Trotter | if self.bridge is not None: |
371 | 13f1af63 | Guido Trotter | self.nicparams[constants.NIC_MODE] = constants.NIC_MODE_BRIDGED
|
372 | 13f1af63 | Guido Trotter | self.nicparams[constants.NIC_LINK] = self.bridge |
373 | 9b31ca85 | Guido Trotter | # bridge is no longer used it 2.1. The slot is left there to support
|
374 | 9b31ca85 | Guido Trotter | # upgrading, but will be removed in 2.2
|
375 | 9b31ca85 | Guido Trotter | if self.bridge is not None: |
376 | 9b31ca85 | Guido Trotter | self.bridge = None |
377 | 13f1af63 | Guido Trotter | |
378 | a8083063 | Iustin Pop | |
379 | a8083063 | Iustin Pop | class Disk(ConfigObject): |
380 | a8083063 | Iustin Pop | """Config object representing a block device."""
|
381 | a8083063 | Iustin Pop | __slots__ = ["dev_type", "logical_id", "physical_id", |
382 | 08db7c5c | Iustin Pop | "children", "iv_name", "size", "mode"] |
383 | a8083063 | Iustin Pop | |
384 | a8083063 | Iustin Pop | def CreateOnSecondary(self): |
385 | a8083063 | Iustin Pop | """Test if this device needs to be created on a secondary node."""
|
386 | 00fb8246 | Michael Hanselmann | return self.dev_type in (constants.LD_DRBD8, constants.LD_LV) |
387 | a8083063 | Iustin Pop | |
388 | a8083063 | Iustin Pop | def AssembleOnSecondary(self): |
389 | a8083063 | Iustin Pop | """Test if this device needs to be assembled on a secondary node."""
|
390 | 00fb8246 | Michael Hanselmann | return self.dev_type in (constants.LD_DRBD8, constants.LD_LV) |
391 | a8083063 | Iustin Pop | |
392 | a8083063 | Iustin Pop | def OpenOnSecondary(self): |
393 | a8083063 | Iustin Pop | """Test if this device needs to be opened on a secondary node."""
|
394 | fe96220b | Iustin Pop | return self.dev_type in (constants.LD_LV,) |
395 | a8083063 | Iustin Pop | |
396 | 222f2dd5 | Iustin Pop | def StaticDevPath(self): |
397 | 222f2dd5 | Iustin Pop | """Return the device path if this device type has a static one.
|
398 | 222f2dd5 | Iustin Pop |
|
399 | 222f2dd5 | Iustin Pop | Some devices (LVM for example) live always at the same /dev/ path,
|
400 | 222f2dd5 | Iustin Pop | irrespective of their status. For such devices, we return this
|
401 | 222f2dd5 | Iustin Pop | path, for others we return None.
|
402 | 222f2dd5 | Iustin Pop |
|
403 | 222f2dd5 | Iustin Pop | """
|
404 | 222f2dd5 | Iustin Pop | if self.dev_type == constants.LD_LV: |
405 | 222f2dd5 | Iustin Pop | return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1]) |
406 | 222f2dd5 | Iustin Pop | return None |
407 | 222f2dd5 | Iustin Pop | |
408 | fc1dc9d7 | Iustin Pop | def ChildrenNeeded(self): |
409 | fc1dc9d7 | Iustin Pop | """Compute the needed number of children for activation.
|
410 | fc1dc9d7 | Iustin Pop |
|
411 | fc1dc9d7 | Iustin Pop | This method will return either -1 (all children) or a positive
|
412 | fc1dc9d7 | Iustin Pop | number denoting the minimum number of children needed for
|
413 | fc1dc9d7 | Iustin Pop | activation (only mirrored devices will usually return >=0).
|
414 | fc1dc9d7 | Iustin Pop |
|
415 | fc1dc9d7 | Iustin Pop | Currently, only DRBD8 supports diskless activation (therefore we
|
416 | fc1dc9d7 | Iustin Pop | return 0), for all other we keep the previous semantics and return
|
417 | fc1dc9d7 | Iustin Pop | -1.
|
418 | fc1dc9d7 | Iustin Pop |
|
419 | fc1dc9d7 | Iustin Pop | """
|
420 | fc1dc9d7 | Iustin Pop | if self.dev_type == constants.LD_DRBD8: |
421 | fc1dc9d7 | Iustin Pop | return 0 |
422 | fc1dc9d7 | Iustin Pop | return -1 |
423 | fc1dc9d7 | Iustin Pop | |
424 | a8083063 | Iustin Pop | def GetNodes(self, node): |
425 | a8083063 | Iustin Pop | """This function returns the nodes this device lives on.
|
426 | a8083063 | Iustin Pop |
|
427 | a8083063 | Iustin Pop | Given the node on which the parent of the device lives on (or, in
|
428 | a8083063 | Iustin Pop | case of a top-level device, the primary node of the devices'
|
429 | a8083063 | Iustin Pop | instance), this function will return a list of nodes on which this
|
430 | a8083063 | Iustin Pop | devices needs to (or can) be assembled.
|
431 | a8083063 | Iustin Pop |
|
432 | a8083063 | Iustin Pop | """
|
433 | 00fb8246 | Michael Hanselmann | if self.dev_type in [constants.LD_LV, constants.LD_FILE]: |
434 | a8083063 | Iustin Pop | result = [node] |
435 | a1f445d3 | Iustin Pop | elif self.dev_type in constants.LDS_DRBD: |
436 | a8083063 | Iustin Pop | result = [self.logical_id[0], self.logical_id[1]] |
437 | a8083063 | Iustin Pop | if node not in result: |
438 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device passed unknown node") |
439 | a8083063 | Iustin Pop | else:
|
440 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unhandled device type %s" % self.dev_type) |
441 | a8083063 | Iustin Pop | return result
|
442 | a8083063 | Iustin Pop | |
443 | a8083063 | Iustin Pop | def ComputeNodeTree(self, parent_node): |
444 | a8083063 | Iustin Pop | """Compute the node/disk tree for this disk and its children.
|
445 | a8083063 | Iustin Pop |
|
446 | a8083063 | Iustin Pop | This method, given the node on which the parent disk lives, will
|
447 | a8083063 | Iustin Pop | return the list of all (node, disk) pairs which describe the disk
|
448 | abdf0113 | Iustin Pop | tree in the most compact way. For example, a drbd/lvm stack
|
449 | abdf0113 | Iustin Pop | will be returned as (primary_node, drbd) and (secondary_node, drbd)
|
450 | abdf0113 | Iustin Pop | which represents all the top-level devices on the nodes.
|
451 | a8083063 | Iustin Pop |
|
452 | a8083063 | Iustin Pop | """
|
453 | a8083063 | Iustin Pop | my_nodes = self.GetNodes(parent_node)
|
454 | a8083063 | Iustin Pop | result = [(node, self) for node in my_nodes] |
455 | a8083063 | Iustin Pop | if not self.children: |
456 | a8083063 | Iustin Pop | # leaf device
|
457 | a8083063 | Iustin Pop | return result
|
458 | a8083063 | Iustin Pop | for node in my_nodes: |
459 | a8083063 | Iustin Pop | for child in self.children: |
460 | a8083063 | Iustin Pop | child_result = child.ComputeNodeTree(node) |
461 | a8083063 | Iustin Pop | if len(child_result) == 1: |
462 | a8083063 | Iustin Pop | # child (and all its descendants) is simple, doesn't split
|
463 | a8083063 | Iustin Pop | # over multiple hosts, so we don't need to describe it, our
|
464 | a8083063 | Iustin Pop | # own entry for this node describes it completely
|
465 | a8083063 | Iustin Pop | continue
|
466 | a8083063 | Iustin Pop | else:
|
467 | a8083063 | Iustin Pop | # check if child nodes differ from my nodes; note that
|
468 | a8083063 | Iustin Pop | # subdisk can differ from the child itself, and be instead
|
469 | a8083063 | Iustin Pop | # one of its descendants
|
470 | a8083063 | Iustin Pop | for subnode, subdisk in child_result: |
471 | a8083063 | Iustin Pop | if subnode not in my_nodes: |
472 | a8083063 | Iustin Pop | result.append((subnode, subdisk)) |
473 | a8083063 | Iustin Pop | # otherwise child is under our own node, so we ignore this
|
474 | a8083063 | Iustin Pop | # entry (but probably the other results in the list will
|
475 | a8083063 | Iustin Pop | # be different)
|
476 | a8083063 | Iustin Pop | return result
|
477 | a8083063 | Iustin Pop | |
478 | acec9d51 | Iustin Pop | def RecordGrow(self, amount): |
479 | acec9d51 | Iustin Pop | """Update the size of this disk after growth.
|
480 | acec9d51 | Iustin Pop |
|
481 | acec9d51 | Iustin Pop | This method recurses over the disks's children and updates their
|
482 | acec9d51 | Iustin Pop | size correspondigly. The method needs to be kept in sync with the
|
483 | acec9d51 | Iustin Pop | actual algorithms from bdev.
|
484 | acec9d51 | Iustin Pop |
|
485 | acec9d51 | Iustin Pop | """
|
486 | acec9d51 | Iustin Pop | if self.dev_type == constants.LD_LV: |
487 | acec9d51 | Iustin Pop | self.size += amount
|
488 | acec9d51 | Iustin Pop | elif self.dev_type == constants.LD_DRBD8: |
489 | acec9d51 | Iustin Pop | if self.children: |
490 | acec9d51 | Iustin Pop | self.children[0].RecordGrow(amount) |
491 | acec9d51 | Iustin Pop | self.size += amount
|
492 | acec9d51 | Iustin Pop | else:
|
493 | acec9d51 | Iustin Pop | raise errors.ProgrammerError("Disk.RecordGrow called for unsupported" |
494 | acec9d51 | Iustin Pop | " disk type %s" % self.dev_type) |
495 | acec9d51 | Iustin Pop | |
496 | a805ec18 | Iustin Pop | def UnsetSize(self): |
497 | a805ec18 | Iustin Pop | """Sets recursively the size to zero for the disk and its children.
|
498 | a805ec18 | Iustin Pop |
|
499 | a805ec18 | Iustin Pop | """
|
500 | a805ec18 | Iustin Pop | if self.children: |
501 | a805ec18 | Iustin Pop | for child in self.children: |
502 | a805ec18 | Iustin Pop | child.UnsetSize() |
503 | a805ec18 | Iustin Pop | self.size = 0 |
504 | a805ec18 | Iustin Pop | |
505 | 0402302c | Iustin Pop | def SetPhysicalID(self, target_node, nodes_ip): |
506 | 0402302c | Iustin Pop | """Convert the logical ID to the physical ID.
|
507 | 0402302c | Iustin Pop |
|
508 | 0402302c | Iustin Pop | This is used only for drbd, which needs ip/port configuration.
|
509 | 0402302c | Iustin Pop |
|
510 | 0402302c | Iustin Pop | The routine descends down and updates its children also, because
|
511 | 0402302c | Iustin Pop | this helps when the only the top device is passed to the remote
|
512 | 0402302c | Iustin Pop | node.
|
513 | 0402302c | Iustin Pop |
|
514 | 0402302c | Iustin Pop | Arguments:
|
515 | 0402302c | Iustin Pop | - target_node: the node we wish to configure for
|
516 | 0402302c | Iustin Pop | - nodes_ip: a mapping of node name to ip
|
517 | 0402302c | Iustin Pop |
|
518 | 0402302c | Iustin Pop | The target_node must exist in in nodes_ip, and must be one of the
|
519 | 0402302c | Iustin Pop | nodes in the logical ID for each of the DRBD devices encountered
|
520 | 0402302c | Iustin Pop | in the disk tree.
|
521 | 0402302c | Iustin Pop |
|
522 | 0402302c | Iustin Pop | """
|
523 | 0402302c | Iustin Pop | if self.children: |
524 | 0402302c | Iustin Pop | for child in self.children: |
525 | 0402302c | Iustin Pop | child.SetPhysicalID(target_node, nodes_ip) |
526 | 0402302c | Iustin Pop | |
527 | 0402302c | Iustin Pop | if self.logical_id is None and self.physical_id is not None: |
528 | 0402302c | Iustin Pop | return
|
529 | 0402302c | Iustin Pop | if self.dev_type in constants.LDS_DRBD: |
530 | f9518d38 | Iustin Pop | pnode, snode, port, pminor, sminor, secret = self.logical_id
|
531 | 0402302c | Iustin Pop | if target_node not in (pnode, snode): |
532 | 0402302c | Iustin Pop | raise errors.ConfigurationError("DRBD device not knowing node %s" % |
533 | 0402302c | Iustin Pop | target_node) |
534 | 0402302c | Iustin Pop | pnode_ip = nodes_ip.get(pnode, None)
|
535 | 0402302c | Iustin Pop | snode_ip = nodes_ip.get(snode, None)
|
536 | 0402302c | Iustin Pop | if pnode_ip is None or snode_ip is None: |
537 | 0402302c | Iustin Pop | raise errors.ConfigurationError("Can't find primary or secondary node" |
538 | 0402302c | Iustin Pop | " for %s" % str(self)) |
539 | ffa1c0dc | Iustin Pop | p_data = (pnode_ip, port) |
540 | ffa1c0dc | Iustin Pop | s_data = (snode_ip, port) |
541 | 0402302c | Iustin Pop | if pnode == target_node:
|
542 | f9518d38 | Iustin Pop | self.physical_id = p_data + s_data + (pminor, secret)
|
543 | 0402302c | Iustin Pop | else: # it must be secondary, we tested above |
544 | f9518d38 | Iustin Pop | self.physical_id = s_data + p_data + (sminor, secret)
|
545 | 0402302c | Iustin Pop | else:
|
546 | 0402302c | Iustin Pop | self.physical_id = self.logical_id |
547 | 0402302c | Iustin Pop | return
|
548 | 0402302c | Iustin Pop | |
549 | ff9c047c | Iustin Pop | def ToDict(self): |
550 | ff9c047c | Iustin Pop | """Disk-specific conversion to standard python types.
|
551 | ff9c047c | Iustin Pop |
|
552 | ff9c047c | Iustin Pop | This replaces the children lists of objects with lists of
|
553 | ff9c047c | Iustin Pop | standard python types.
|
554 | ff9c047c | Iustin Pop |
|
555 | ff9c047c | Iustin Pop | """
|
556 | ff9c047c | Iustin Pop | bo = super(Disk, self).ToDict() |
557 | ff9c047c | Iustin Pop | |
558 | ff9c047c | Iustin Pop | for attr in ("children",): |
559 | ff9c047c | Iustin Pop | alist = bo.get(attr, None)
|
560 | ff9c047c | Iustin Pop | if alist:
|
561 | ff9c047c | Iustin Pop | bo[attr] = self._ContainerToDicts(alist)
|
562 | ff9c047c | Iustin Pop | return bo
|
563 | ff9c047c | Iustin Pop | |
564 | ff9c047c | Iustin Pop | @classmethod
|
565 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
566 | ff9c047c | Iustin Pop | """Custom function for Disks
|
567 | ff9c047c | Iustin Pop |
|
568 | ff9c047c | Iustin Pop | """
|
569 | ff9c047c | Iustin Pop | obj = super(Disk, cls).FromDict(val)
|
570 | ff9c047c | Iustin Pop | if obj.children:
|
571 | ff9c047c | Iustin Pop | obj.children = cls._ContainerFromDicts(obj.children, list, Disk)
|
572 | ff9c047c | Iustin Pop | if obj.logical_id and isinstance(obj.logical_id, list): |
573 | ff9c047c | Iustin Pop | obj.logical_id = tuple(obj.logical_id)
|
574 | ff9c047c | Iustin Pop | if obj.physical_id and isinstance(obj.physical_id, list): |
575 | ff9c047c | Iustin Pop | obj.physical_id = tuple(obj.physical_id)
|
576 | f9518d38 | Iustin Pop | if obj.dev_type in constants.LDS_DRBD: |
577 | f9518d38 | Iustin Pop | # we need a tuple of length six here
|
578 | f9518d38 | Iustin Pop | if len(obj.logical_id) < 6: |
579 | f9518d38 | Iustin Pop | obj.logical_id += (None,) * (6 - len(obj.logical_id)) |
580 | ff9c047c | Iustin Pop | return obj
|
581 | ff9c047c | Iustin Pop | |
582 | 65a15336 | Iustin Pop | def __str__(self): |
583 | 65a15336 | Iustin Pop | """Custom str() formatter for disks.
|
584 | 65a15336 | Iustin Pop |
|
585 | 65a15336 | Iustin Pop | """
|
586 | 65a15336 | Iustin Pop | if self.dev_type == constants.LD_LV: |
587 | 65a15336 | Iustin Pop | val = "<LogicalVolume(/dev/%s/%s" % self.logical_id |
588 | 65a15336 | Iustin Pop | elif self.dev_type in constants.LDS_DRBD: |
589 | 89f28b76 | Iustin Pop | node_a, node_b, port, minor_a, minor_b = self.logical_id[:5] |
590 | 00fb8246 | Michael Hanselmann | val = "<DRBD8("
|
591 | 073ca59e | Iustin Pop | if self.physical_id is None: |
592 | 073ca59e | Iustin Pop | phy = "unconfigured"
|
593 | 073ca59e | Iustin Pop | else:
|
594 | 073ca59e | Iustin Pop | phy = ("configured as %s:%s %s:%s" %
|
595 | 25a915d0 | Iustin Pop | (self.physical_id[0], self.physical_id[1], |
596 | 25a915d0 | Iustin Pop | self.physical_id[2], self.physical_id[3])) |
597 | 073ca59e | Iustin Pop | |
598 | 89f28b76 | Iustin Pop | val += ("hosts=%s/%d-%s/%d, port=%s, %s, " %
|
599 | 89f28b76 | Iustin Pop | (node_a, minor_a, node_b, minor_b, port, phy)) |
600 | 65a15336 | Iustin Pop | if self.children and self.children.count(None) == 0: |
601 | 65a15336 | Iustin Pop | val += "backend=%s, metadev=%s" % (self.children[0], self.children[1]) |
602 | 65a15336 | Iustin Pop | else:
|
603 | 65a15336 | Iustin Pop | val += "no local storage"
|
604 | 65a15336 | Iustin Pop | else:
|
605 | 65a15336 | Iustin Pop | val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
|
606 | 65a15336 | Iustin Pop | (self.dev_type, self.logical_id, self.physical_id, self.children)) |
607 | 65a15336 | Iustin Pop | if self.iv_name is None: |
608 | 65a15336 | Iustin Pop | val += ", not visible"
|
609 | 65a15336 | Iustin Pop | else:
|
610 | 65a15336 | Iustin Pop | val += ", visible as /dev/%s" % self.iv_name |
611 | fd965830 | Iustin Pop | if isinstance(self.size, int): |
612 | fd965830 | Iustin Pop | val += ", size=%dm)>" % self.size |
613 | fd965830 | Iustin Pop | else:
|
614 | fd965830 | Iustin Pop | val += ", size='%s')>" % (self.size,) |
615 | 65a15336 | Iustin Pop | return val
|
616 | 65a15336 | Iustin Pop | |
617 | 332d0e37 | Iustin Pop | def Verify(self): |
618 | 332d0e37 | Iustin Pop | """Checks that this disk is correctly configured.
|
619 | 332d0e37 | Iustin Pop |
|
620 | 332d0e37 | Iustin Pop | """
|
621 | 7c4d6c7b | Michael Hanselmann | all_errors = [] |
622 | 332d0e37 | Iustin Pop | if self.mode not in constants.DISK_ACCESS_SET: |
623 | 7c4d6c7b | Michael Hanselmann | all_errors.append("Disk access mode '%s' is invalid" % (self.mode, )) |
624 | 7c4d6c7b | Michael Hanselmann | return all_errors
|
625 | 332d0e37 | Iustin Pop | |
626 | 90d726a8 | Iustin Pop | def UpgradeConfig(self): |
627 | 90d726a8 | Iustin Pop | """Fill defaults for missing configuration values.
|
628 | 90d726a8 | Iustin Pop |
|
629 | 90d726a8 | Iustin Pop | """
|
630 | 90d726a8 | Iustin Pop | if self.children: |
631 | 90d726a8 | Iustin Pop | for child in self.children: |
632 | 90d726a8 | Iustin Pop | child.UpgradeConfig() |
633 | 90d726a8 | Iustin Pop | # add here config upgrade for this disk
|
634 | 90d726a8 | Iustin Pop | |
635 | a8083063 | Iustin Pop | |
636 | ec29fe40 | Iustin Pop | class Instance(TaggableObject): |
637 | a8083063 | Iustin Pop | """Config object representing an instance."""
|
638 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
639 | a8083063 | Iustin Pop | "name",
|
640 | a8083063 | Iustin Pop | "primary_node",
|
641 | a8083063 | Iustin Pop | "os",
|
642 | e69d05fd | Iustin Pop | "hypervisor",
|
643 | 5bf7b5cf | Iustin Pop | "hvparams",
|
644 | 5bf7b5cf | Iustin Pop | "beparams",
|
645 | 0d68c45d | Iustin Pop | "admin_up",
|
646 | a8083063 | Iustin Pop | "nics",
|
647 | a8083063 | Iustin Pop | "disks",
|
648 | a8083063 | Iustin Pop | "disk_template",
|
649 | 58acb49d | Alexander Schreiber | "network_port",
|
650 | be1fa613 | Iustin Pop | "serial_no",
|
651 | e1dcc53a | Iustin Pop | ] + _TIMESTAMPS + _UUID |
652 | a8083063 | Iustin Pop | |
653 | a8083063 | Iustin Pop | def _ComputeSecondaryNodes(self): |
654 | a8083063 | Iustin Pop | """Compute the list of secondary nodes.
|
655 | a8083063 | Iustin Pop |
|
656 | cfcc5c6d | Iustin Pop | This is a simple wrapper over _ComputeAllNodes.
|
657 | cfcc5c6d | Iustin Pop |
|
658 | cfcc5c6d | Iustin Pop | """
|
659 | cfcc5c6d | Iustin Pop | all_nodes = set(self._ComputeAllNodes()) |
660 | cfcc5c6d | Iustin Pop | all_nodes.discard(self.primary_node)
|
661 | cfcc5c6d | Iustin Pop | return tuple(all_nodes) |
662 | cfcc5c6d | Iustin Pop | |
663 | cfcc5c6d | Iustin Pop | secondary_nodes = property(_ComputeSecondaryNodes, None, None, |
664 | cfcc5c6d | Iustin Pop | "List of secondary nodes")
|
665 | cfcc5c6d | Iustin Pop | |
666 | cfcc5c6d | Iustin Pop | def _ComputeAllNodes(self): |
667 | cfcc5c6d | Iustin Pop | """Compute the list of all nodes.
|
668 | cfcc5c6d | Iustin Pop |
|
669 | a8083063 | Iustin Pop | Since the data is already there (in the drbd disks), keeping it as
|
670 | a8083063 | Iustin Pop | a separate normal attribute is redundant and if not properly
|
671 | a8083063 | Iustin Pop | synchronised can cause problems. Thus it's better to compute it
|
672 | a8083063 | Iustin Pop | dynamically.
|
673 | a8083063 | Iustin Pop |
|
674 | a8083063 | Iustin Pop | """
|
675 | cfcc5c6d | Iustin Pop | def _Helper(nodes, device): |
676 | cfcc5c6d | Iustin Pop | """Recursively computes nodes given a top device."""
|
677 | a1f445d3 | Iustin Pop | if device.dev_type in constants.LDS_DRBD: |
678 | cfcc5c6d | Iustin Pop | nodea, nodeb = device.logical_id[:2]
|
679 | cfcc5c6d | Iustin Pop | nodes.add(nodea) |
680 | cfcc5c6d | Iustin Pop | nodes.add(nodeb) |
681 | a8083063 | Iustin Pop | if device.children:
|
682 | a8083063 | Iustin Pop | for child in device.children: |
683 | cfcc5c6d | Iustin Pop | _Helper(nodes, child) |
684 | a8083063 | Iustin Pop | |
685 | cfcc5c6d | Iustin Pop | all_nodes = set()
|
686 | 99c7b2a1 | Iustin Pop | all_nodes.add(self.primary_node)
|
687 | a8083063 | Iustin Pop | for device in self.disks: |
688 | cfcc5c6d | Iustin Pop | _Helper(all_nodes, device) |
689 | cfcc5c6d | Iustin Pop | return tuple(all_nodes) |
690 | a8083063 | Iustin Pop | |
691 | cfcc5c6d | Iustin Pop | all_nodes = property(_ComputeAllNodes, None, None, |
692 | cfcc5c6d | Iustin Pop | "List of all nodes of the instance")
|
693 | a8083063 | Iustin Pop | |
694 | a8083063 | Iustin Pop | def MapLVsByNode(self, lvmap=None, devs=None, node=None): |
695 | a8083063 | Iustin Pop | """Provide a mapping of nodes to LVs this instance owns.
|
696 | a8083063 | Iustin Pop |
|
697 | c41eea6e | Iustin Pop | This function figures out what logical volumes should belong on
|
698 | c41eea6e | Iustin Pop | which nodes, recursing through a device tree.
|
699 | a8083063 | Iustin Pop |
|
700 | c41eea6e | Iustin Pop | @param lvmap: optional dictionary to receive the
|
701 | c41eea6e | Iustin Pop | 'node' : ['lv', ...] data.
|
702 | a8083063 | Iustin Pop |
|
703 | c41eea6e | Iustin Pop | @return: None if lvmap arg is given, otherwise, a dictionary
|
704 | c41eea6e | Iustin Pop | of the form { 'nodename' : ['volume1', 'volume2', ...], ... }
|
705 | a8083063 | Iustin Pop |
|
706 | a8083063 | Iustin Pop | """
|
707 | a8083063 | Iustin Pop | if node == None: |
708 | a8083063 | Iustin Pop | node = self.primary_node
|
709 | a8083063 | Iustin Pop | |
710 | a8083063 | Iustin Pop | if lvmap is None: |
711 | a8083063 | Iustin Pop | lvmap = { node : [] } |
712 | a8083063 | Iustin Pop | ret = lvmap |
713 | a8083063 | Iustin Pop | else:
|
714 | a8083063 | Iustin Pop | if not node in lvmap: |
715 | a8083063 | Iustin Pop | lvmap[node] = [] |
716 | a8083063 | Iustin Pop | ret = None
|
717 | a8083063 | Iustin Pop | |
718 | a8083063 | Iustin Pop | if not devs: |
719 | a8083063 | Iustin Pop | devs = self.disks
|
720 | a8083063 | Iustin Pop | |
721 | a8083063 | Iustin Pop | for dev in devs: |
722 | fe96220b | Iustin Pop | if dev.dev_type == constants.LD_LV:
|
723 | a8083063 | Iustin Pop | lvmap[node].append(dev.logical_id[1])
|
724 | a8083063 | Iustin Pop | |
725 | a1f445d3 | Iustin Pop | elif dev.dev_type in constants.LDS_DRBD: |
726 | a8083063 | Iustin Pop | if dev.children:
|
727 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, dev.logical_id[0]) |
728 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, dev.logical_id[1]) |
729 | a8083063 | Iustin Pop | |
730 | a8083063 | Iustin Pop | elif dev.children:
|
731 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, node)
|
732 | a8083063 | Iustin Pop | |
733 | a8083063 | Iustin Pop | return ret
|
734 | a8083063 | Iustin Pop | |
735 | ad24e046 | Iustin Pop | def FindDisk(self, idx): |
736 | ad24e046 | Iustin Pop | """Find a disk given having a specified index.
|
737 | 644eeef9 | Iustin Pop |
|
738 | ad24e046 | Iustin Pop | This is just a wrapper that does validation of the index.
|
739 | 644eeef9 | Iustin Pop |
|
740 | ad24e046 | Iustin Pop | @type idx: int
|
741 | ad24e046 | Iustin Pop | @param idx: the disk index
|
742 | ad24e046 | Iustin Pop | @rtype: L{Disk}
|
743 | ad24e046 | Iustin Pop | @return: the corresponding disk
|
744 | ad24e046 | Iustin Pop | @raise errors.OpPrereqError: when the given index is not valid
|
745 | 644eeef9 | Iustin Pop |
|
746 | ad24e046 | Iustin Pop | """
|
747 | ad24e046 | Iustin Pop | try:
|
748 | ad24e046 | Iustin Pop | idx = int(idx)
|
749 | ad24e046 | Iustin Pop | return self.disks[idx] |
750 | ad24e046 | Iustin Pop | except ValueError, err: |
751 | debac808 | Iustin Pop | raise errors.OpPrereqError("Invalid disk index: '%s'" % str(err), |
752 | debac808 | Iustin Pop | errors.ECODE_INVAL) |
753 | ad24e046 | Iustin Pop | except IndexError: |
754 | ad24e046 | Iustin Pop | raise errors.OpPrereqError("Invalid disk index: %d (instace has disks" |
755 | debac808 | Iustin Pop | " 0 to %d" % (idx, len(self.disks)), |
756 | debac808 | Iustin Pop | errors.ECODE_INVAL) |
757 | 644eeef9 | Iustin Pop | |
758 | ff9c047c | Iustin Pop | def ToDict(self): |
759 | ff9c047c | Iustin Pop | """Instance-specific conversion to standard python types.
|
760 | ff9c047c | Iustin Pop |
|
761 | ff9c047c | Iustin Pop | This replaces the children lists of objects with lists of standard
|
762 | ff9c047c | Iustin Pop | python types.
|
763 | ff9c047c | Iustin Pop |
|
764 | ff9c047c | Iustin Pop | """
|
765 | ff9c047c | Iustin Pop | bo = super(Instance, self).ToDict() |
766 | ff9c047c | Iustin Pop | |
767 | ff9c047c | Iustin Pop | for attr in "nics", "disks": |
768 | ff9c047c | Iustin Pop | alist = bo.get(attr, None)
|
769 | ff9c047c | Iustin Pop | if alist:
|
770 | ff9c047c | Iustin Pop | nlist = self._ContainerToDicts(alist)
|
771 | ff9c047c | Iustin Pop | else:
|
772 | ff9c047c | Iustin Pop | nlist = [] |
773 | ff9c047c | Iustin Pop | bo[attr] = nlist |
774 | ff9c047c | Iustin Pop | return bo
|
775 | ff9c047c | Iustin Pop | |
776 | ff9c047c | Iustin Pop | @classmethod
|
777 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
778 | ff9c047c | Iustin Pop | """Custom function for instances.
|
779 | ff9c047c | Iustin Pop |
|
780 | ff9c047c | Iustin Pop | """
|
781 | ff9c047c | Iustin Pop | obj = super(Instance, cls).FromDict(val)
|
782 | ff9c047c | Iustin Pop | obj.nics = cls._ContainerFromDicts(obj.nics, list, NIC)
|
783 | ff9c047c | Iustin Pop | obj.disks = cls._ContainerFromDicts(obj.disks, list, Disk)
|
784 | ff9c047c | Iustin Pop | return obj
|
785 | ff9c047c | Iustin Pop | |
786 | 90d726a8 | Iustin Pop | def UpgradeConfig(self): |
787 | 90d726a8 | Iustin Pop | """Fill defaults for missing configuration values.
|
788 | 90d726a8 | Iustin Pop |
|
789 | 90d726a8 | Iustin Pop | """
|
790 | 90d726a8 | Iustin Pop | for nic in self.nics: |
791 | 90d726a8 | Iustin Pop | nic.UpgradeConfig() |
792 | 90d726a8 | Iustin Pop | for disk in self.disks: |
793 | 90d726a8 | Iustin Pop | disk.UpgradeConfig() |
794 | 7736a5f2 | Iustin Pop | if self.hvparams: |
795 | 7736a5f2 | Iustin Pop | for key in constants.HVC_GLOBALS: |
796 | 7736a5f2 | Iustin Pop | try:
|
797 | 7736a5f2 | Iustin Pop | del self.hvparams[key] |
798 | 7736a5f2 | Iustin Pop | except KeyError: |
799 | 7736a5f2 | Iustin Pop | pass
|
800 | 90d726a8 | Iustin Pop | |
801 | a8083063 | Iustin Pop | |
802 | a8083063 | Iustin Pop | class OS(ConfigObject): |
803 | a8083063 | Iustin Pop | """Config object representing an operating system."""
|
804 | a8083063 | Iustin Pop | __slots__ = [ |
805 | a8083063 | Iustin Pop | "name",
|
806 | a8083063 | Iustin Pop | "path",
|
807 | 082a7f91 | Guido Trotter | "api_versions",
|
808 | a8083063 | Iustin Pop | "create_script",
|
809 | a8083063 | Iustin Pop | "export_script",
|
810 | 386b57af | Iustin Pop | "import_script",
|
811 | 386b57af | Iustin Pop | "rename_script",
|
812 | 6d79896b | Guido Trotter | "supported_variants",
|
813 | a8083063 | Iustin Pop | ] |
814 | a8083063 | Iustin Pop | |
815 | 7c0d6283 | Michael Hanselmann | |
816 | ec29fe40 | Iustin Pop | class Node(TaggableObject): |
817 | a8083063 | Iustin Pop | """Config object representing a node."""
|
818 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
819 | ec29fe40 | Iustin Pop | "name",
|
820 | ec29fe40 | Iustin Pop | "primary_ip",
|
821 | ec29fe40 | Iustin Pop | "secondary_ip",
|
822 | be1fa613 | Iustin Pop | "serial_no",
|
823 | 8b8b8b81 | Iustin Pop | "master_candidate",
|
824 | fc0fe88c | Iustin Pop | "offline",
|
825 | af64c0ea | Iustin Pop | "drained",
|
826 | e1dcc53a | Iustin Pop | ] + _TIMESTAMPS + _UUID |
827 | a8083063 | Iustin Pop | |
828 | a8083063 | Iustin Pop | |
829 | ec29fe40 | Iustin Pop | class Cluster(TaggableObject): |
830 | a8083063 | Iustin Pop | """Config object representing the cluster."""
|
831 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
832 | a8083063 | Iustin Pop | "serial_no",
|
833 | a8083063 | Iustin Pop | "rsahostkeypub",
|
834 | a8083063 | Iustin Pop | "highest_used_port",
|
835 | b2fddf63 | Iustin Pop | "tcpudp_port_pool",
|
836 | a8083063 | Iustin Pop | "mac_prefix",
|
837 | a8083063 | Iustin Pop | "volume_group_name",
|
838 | a8083063 | Iustin Pop | "default_bridge",
|
839 | 02691904 | Alexander Schreiber | "default_hypervisor",
|
840 | f6bd6e98 | Michael Hanselmann | "master_node",
|
841 | f6bd6e98 | Michael Hanselmann | "master_ip",
|
842 | f6bd6e98 | Michael Hanselmann | "master_netdev",
|
843 | f6bd6e98 | Michael Hanselmann | "cluster_name",
|
844 | f6bd6e98 | Michael Hanselmann | "file_storage_dir",
|
845 | e69d05fd | Iustin Pop | "enabled_hypervisors",
|
846 | 5bf7b5cf | Iustin Pop | "hvparams",
|
847 | 5bf7b5cf | Iustin Pop | "beparams",
|
848 | c8fcde47 | Guido Trotter | "nicparams",
|
849 | 4b7735f9 | Iustin Pop | "candidate_pool_size",
|
850 | b86a6bcd | Guido Trotter | "modify_etc_hosts",
|
851 | b989b9d9 | Ken Wehr | "modify_ssh_setup",
|
852 | e1dcc53a | Iustin Pop | ] + _TIMESTAMPS + _UUID |
853 | a8083063 | Iustin Pop | |
854 | b86a6bcd | Guido Trotter | def UpgradeConfig(self): |
855 | b86a6bcd | Guido Trotter | """Fill defaults for missing configuration values.
|
856 | b86a6bcd | Guido Trotter |
|
857 | b86a6bcd | Guido Trotter | """
|
858 | fe267188 | Iustin Pop | # pylint: disable-msg=E0203
|
859 | fe267188 | Iustin Pop | # because these are "defined" via slots, not manually
|
860 | c1b42c18 | Guido Trotter | if self.hvparams is None: |
861 | c1b42c18 | Guido Trotter | self.hvparams = constants.HVC_DEFAULTS
|
862 | c1b42c18 | Guido Trotter | else:
|
863 | c1b42c18 | Guido Trotter | for hypervisor in self.hvparams: |
864 | abe609b2 | Guido Trotter | self.hvparams[hypervisor] = FillDict(
|
865 | c1b42c18 | Guido Trotter | constants.HVC_DEFAULTS[hypervisor], self.hvparams[hypervisor])
|
866 | c1b42c18 | Guido Trotter | |
867 | 6e34b628 | Guido Trotter | self.beparams = UpgradeGroupedParams(self.beparams, |
868 | 6e34b628 | Guido Trotter | constants.BEC_DEFAULTS) |
869 | c8fcde47 | Guido Trotter | migrate_default_bridge = not self.nicparams |
870 | c8fcde47 | Guido Trotter | self.nicparams = UpgradeGroupedParams(self.nicparams, |
871 | c8fcde47 | Guido Trotter | constants.NICC_DEFAULTS) |
872 | c8fcde47 | Guido Trotter | if migrate_default_bridge:
|
873 | c8fcde47 | Guido Trotter | self.nicparams[constants.PP_DEFAULT][constants.NIC_LINK] = \
|
874 | c8fcde47 | Guido Trotter | self.default_bridge
|
875 | c1b42c18 | Guido Trotter | |
876 | b86a6bcd | Guido Trotter | if self.modify_etc_hosts is None: |
877 | b86a6bcd | Guido Trotter | self.modify_etc_hosts = True |
878 | b86a6bcd | Guido Trotter | |
879 | b989b9d9 | Ken Wehr | if self.modify_ssh_setup is None: |
880 | b989b9d9 | Ken Wehr | self.modify_ssh_setup = True |
881 | b989b9d9 | Ken Wehr | |
882 | 9b31ca85 | Guido Trotter | # default_bridge is no longer used it 2.1. The slot is left there to
|
883 | 9b31ca85 | Guido Trotter | # support auto-upgrading, but will be removed in 2.2
|
884 | 9b31ca85 | Guido Trotter | if self.default_bridge is not None: |
885 | 9b31ca85 | Guido Trotter | self.default_bridge = None |
886 | 9b31ca85 | Guido Trotter | |
887 | 066f465d | Guido Trotter | # default_hypervisor is just the first enabled one in 2.1
|
888 | 066f465d | Guido Trotter | if self.default_hypervisor is not None: |
889 | 016d04b3 | Michael Hanselmann | self.enabled_hypervisors = ([self.default_hypervisor] + |
890 | 066f465d | Guido Trotter | [hvname for hvname in self.enabled_hypervisors |
891 | 016d04b3 | Michael Hanselmann | if hvname != self.default_hypervisor]) |
892 | 066f465d | Guido Trotter | self.default_hypervisor = None |
893 | 066f465d | Guido Trotter | |
894 | 319856a9 | Michael Hanselmann | def ToDict(self): |
895 | 319856a9 | Michael Hanselmann | """Custom function for cluster.
|
896 | 319856a9 | Michael Hanselmann |
|
897 | 319856a9 | Michael Hanselmann | """
|
898 | b60ae2ca | Iustin Pop | mydict = super(Cluster, self).ToDict() |
899 | 319856a9 | Michael Hanselmann | mydict["tcpudp_port_pool"] = list(self.tcpudp_port_pool) |
900 | 319856a9 | Michael Hanselmann | return mydict
|
901 | 319856a9 | Michael Hanselmann | |
902 | 319856a9 | Michael Hanselmann | @classmethod
|
903 | 319856a9 | Michael Hanselmann | def FromDict(cls, val): |
904 | 319856a9 | Michael Hanselmann | """Custom function for cluster.
|
905 | 319856a9 | Michael Hanselmann |
|
906 | 319856a9 | Michael Hanselmann | """
|
907 | b60ae2ca | Iustin Pop | obj = super(Cluster, cls).FromDict(val)
|
908 | 319856a9 | Michael Hanselmann | if not isinstance(obj.tcpudp_port_pool, set): |
909 | 319856a9 | Michael Hanselmann | obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
|
910 | 319856a9 | Michael Hanselmann | return obj
|
911 | 319856a9 | Michael Hanselmann | |
912 | 7736a5f2 | Iustin Pop | def FillHV(self, instance, skip_globals=False): |
913 | 5bf7b5cf | Iustin Pop | """Fill an instance's hvparams dict.
|
914 | 5bf7b5cf | Iustin Pop |
|
915 | a2a24f4c | Guido Trotter | @type instance: L{objects.Instance}
|
916 | 5bf7b5cf | Iustin Pop | @param instance: the instance parameter to fill
|
917 | 7736a5f2 | Iustin Pop | @type skip_globals: boolean
|
918 | 7736a5f2 | Iustin Pop | @param skip_globals: if True, the global hypervisor parameters will
|
919 | 7736a5f2 | Iustin Pop | not be filled
|
920 | 5bf7b5cf | Iustin Pop | @rtype: dict
|
921 | 5bf7b5cf | Iustin Pop | @return: a copy of the instance's hvparams with missing keys filled from
|
922 | 5bf7b5cf | Iustin Pop | the cluster defaults
|
923 | 5bf7b5cf | Iustin Pop |
|
924 | 5bf7b5cf | Iustin Pop | """
|
925 | 7736a5f2 | Iustin Pop | if skip_globals:
|
926 | 7736a5f2 | Iustin Pop | skip_keys = constants.HVC_GLOBALS |
927 | 7736a5f2 | Iustin Pop | else:
|
928 | 7736a5f2 | Iustin Pop | skip_keys = [] |
929 | abe609b2 | Guido Trotter | return FillDict(self.hvparams.get(instance.hypervisor, {}), |
930 | 7736a5f2 | Iustin Pop | instance.hvparams, skip_keys=skip_keys) |
931 | 5bf7b5cf | Iustin Pop | |
932 | 5bf7b5cf | Iustin Pop | def FillBE(self, instance): |
933 | 5bf7b5cf | Iustin Pop | """Fill an instance's beparams dict.
|
934 | 5bf7b5cf | Iustin Pop |
|
935 | a2a24f4c | Guido Trotter | @type instance: L{objects.Instance}
|
936 | 5bf7b5cf | Iustin Pop | @param instance: the instance parameter to fill
|
937 | 5bf7b5cf | Iustin Pop | @rtype: dict
|
938 | 5bf7b5cf | Iustin Pop | @return: a copy of the instance's beparams with missing keys filled from
|
939 | 5bf7b5cf | Iustin Pop | the cluster defaults
|
940 | 5bf7b5cf | Iustin Pop |
|
941 | 5bf7b5cf | Iustin Pop | """
|
942 | 4ef7f423 | Guido Trotter | return FillDict(self.beparams.get(constants.PP_DEFAULT, {}), |
943 | 7736a5f2 | Iustin Pop | instance.beparams) |
944 | 5bf7b5cf | Iustin Pop | |
945 | 5c947f38 | Iustin Pop | |
946 | 96acbc09 | Michael Hanselmann | class BlockDevStatus(ConfigObject): |
947 | 96acbc09 | Michael Hanselmann | """Config object representing the status of a block device."""
|
948 | 96acbc09 | Michael Hanselmann | __slots__ = [ |
949 | 96acbc09 | Michael Hanselmann | "dev_path",
|
950 | 96acbc09 | Michael Hanselmann | "major",
|
951 | 96acbc09 | Michael Hanselmann | "minor",
|
952 | 96acbc09 | Michael Hanselmann | "sync_percent",
|
953 | 96acbc09 | Michael Hanselmann | "estimated_time",
|
954 | 96acbc09 | Michael Hanselmann | "is_degraded",
|
955 | f208978a | Michael Hanselmann | "ldisk_status",
|
956 | 96acbc09 | Michael Hanselmann | ] |
957 | 96acbc09 | Michael Hanselmann | |
958 | 96acbc09 | Michael Hanselmann | |
959 | 18d750b9 | Guido Trotter | class ConfdRequest(ConfigObject): |
960 | 18d750b9 | Guido Trotter | """Object holding a confd request.
|
961 | 18d750b9 | Guido Trotter |
|
962 | 18d750b9 | Guido Trotter | @ivar protocol: confd protocol version
|
963 | 18d750b9 | Guido Trotter | @ivar type: confd query type
|
964 | 18d750b9 | Guido Trotter | @ivar query: query request
|
965 | 18d750b9 | Guido Trotter | @ivar rsalt: requested reply salt
|
966 | 18d750b9 | Guido Trotter |
|
967 | 18d750b9 | Guido Trotter | """
|
968 | 18d750b9 | Guido Trotter | __slots__ = [ |
969 | 18d750b9 | Guido Trotter | "protocol",
|
970 | 18d750b9 | Guido Trotter | "type",
|
971 | 18d750b9 | Guido Trotter | "query",
|
972 | 18d750b9 | Guido Trotter | "rsalt",
|
973 | 18d750b9 | Guido Trotter | ] |
974 | 18d750b9 | Guido Trotter | |
975 | 18d750b9 | Guido Trotter | |
976 | 18d750b9 | Guido Trotter | class ConfdReply(ConfigObject): |
977 | 18d750b9 | Guido Trotter | """Object holding a confd reply.
|
978 | 18d750b9 | Guido Trotter |
|
979 | 18d750b9 | Guido Trotter | @ivar protocol: confd protocol version
|
980 | 18d750b9 | Guido Trotter | @ivar status: reply status code (ok, error)
|
981 | 18d750b9 | Guido Trotter | @ivar answer: confd query reply
|
982 | 18d750b9 | Guido Trotter | @ivar serial: configuration serial number
|
983 | 18d750b9 | Guido Trotter |
|
984 | 18d750b9 | Guido Trotter | """
|
985 | 18d750b9 | Guido Trotter | __slots__ = [ |
986 | 18d750b9 | Guido Trotter | "protocol",
|
987 | 18d750b9 | Guido Trotter | "status",
|
988 | 18d750b9 | Guido Trotter | "answer",
|
989 | 18d750b9 | Guido Trotter | "serial",
|
990 | 18d750b9 | Guido Trotter | ] |
991 | 18d750b9 | Guido Trotter | |
992 | 18d750b9 | Guido Trotter | |
993 | a8083063 | Iustin Pop | class SerializableConfigParser(ConfigParser.SafeConfigParser): |
994 | a8083063 | Iustin Pop | """Simple wrapper over ConfigParse that allows serialization.
|
995 | a8083063 | Iustin Pop |
|
996 | a8083063 | Iustin Pop | This class is basically ConfigParser.SafeConfigParser with two
|
997 | a8083063 | Iustin Pop | additional methods that allow it to serialize/unserialize to/from a
|
998 | a8083063 | Iustin Pop | buffer.
|
999 | a8083063 | Iustin Pop |
|
1000 | a8083063 | Iustin Pop | """
|
1001 | a8083063 | Iustin Pop | def Dumps(self): |
1002 | a8083063 | Iustin Pop | """Dump this instance and return the string representation."""
|
1003 | a8083063 | Iustin Pop | buf = StringIO() |
1004 | a8083063 | Iustin Pop | self.write(buf)
|
1005 | a8083063 | Iustin Pop | return buf.getvalue()
|
1006 | a8083063 | Iustin Pop | |
1007 | a8083063 | Iustin Pop | @staticmethod
|
1008 | a8083063 | Iustin Pop | def Loads(data): |
1009 | a8083063 | Iustin Pop | """Load data from a string."""
|
1010 | a8083063 | Iustin Pop | buf = StringIO(data) |
1011 | a8083063 | Iustin Pop | cfp = SerializableConfigParser() |
1012 | a8083063 | Iustin Pop | cfp.readfp(buf) |
1013 | a8083063 | Iustin Pop | return cfp |