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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
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5 | a8083063 | Iustin Pop | #
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6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
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7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
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8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
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9 | a8083063 | Iustin Pop | # (at your option) any later version.
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10 | a8083063 | Iustin Pop | #
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11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
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12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | a8083063 | Iustin Pop | # General Public License for more details.
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15 | a8083063 | Iustin Pop | #
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16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
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17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
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18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | a8083063 | Iustin Pop | # 02110-1301, USA.
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20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Transportable objects for Ganeti.
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23 | a8083063 | Iustin Pop |
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24 | a8083063 | Iustin Pop | This module provides small, mostly data-only objects which are safe to
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25 | a8083063 | Iustin Pop | pass to and from external parties.
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26 | a8083063 | Iustin Pop |
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27 | a8083063 | Iustin Pop | """
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28 | a8083063 | Iustin Pop | |
29 | a8083063 | Iustin Pop | |
30 | a8083063 | Iustin Pop | import ConfigParser |
31 | 5c947f38 | Iustin Pop | import re |
32 | 5bf7b5cf | Iustin Pop | import copy |
33 | d5835922 | Michael Hanselmann | from cStringIO import StringIO |
34 | a8083063 | Iustin Pop | |
35 | a8083063 | Iustin Pop | from ganeti import errors |
36 | 5c947f38 | Iustin Pop | from ganeti import constants |
37 | a8083063 | Iustin Pop | |
38 | a8083063 | Iustin Pop | |
39 | a8083063 | Iustin Pop | __all__ = ["ConfigObject", "ConfigData", "NIC", "Disk", "Instance", |
40 | abe609b2 | Guido Trotter | "OS", "Node", "Cluster", "FillDict"] |
41 | a8083063 | Iustin Pop | |
42 | abe609b2 | Guido Trotter | def FillDict(defaults_dict, custom_dict): |
43 | abe609b2 | Guido Trotter | """Basic function to apply settings on top a default dict.
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44 | abe609b2 | Guido Trotter |
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45 | abe609b2 | Guido Trotter | @type defaults_dict: dict
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46 | abe609b2 | Guido Trotter | @param defaults_dict: dictionary holding the default values
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47 | abe609b2 | Guido Trotter | @type custom_dict: dict
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48 | abe609b2 | Guido Trotter | @param custom_dict: dictionary holding customized value
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49 | abe609b2 | Guido Trotter | @rtype: dict
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50 | abe609b2 | Guido Trotter | @return: dict with the 'full' values
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51 | abe609b2 | Guido Trotter |
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52 | abe609b2 | Guido Trotter | """
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53 | abe609b2 | Guido Trotter | ret_dict = copy.deepcopy(defaults_dict) |
54 | abe609b2 | Guido Trotter | ret_dict.update(custom_dict) |
55 | abe609b2 | Guido Trotter | return ret_dict
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56 | a8083063 | Iustin Pop | |
57 | 6e34b628 | Guido Trotter | |
58 | 6e34b628 | Guido Trotter | def UpgradeGroupedParams(target, defaults): |
59 | 6e34b628 | Guido Trotter | """Update all groups for the target parameter.
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60 | 6e34b628 | Guido Trotter |
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61 | 6e34b628 | Guido Trotter | @type target: dict of dicts
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62 | 6e34b628 | Guido Trotter | @param target: {group: {parameter: value}}
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63 | 6e34b628 | Guido Trotter | @type defaults: dict
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64 | 6e34b628 | Guido Trotter | @param defaults: default parameter values
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65 | 6e34b628 | Guido Trotter |
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66 | 6e34b628 | Guido Trotter | """
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67 | 6e34b628 | Guido Trotter | if target is None: |
68 | 6e34b628 | Guido Trotter | target = {constants.PP_DEFAULT: defaults} |
69 | 6e34b628 | Guido Trotter | else:
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70 | 6e34b628 | Guido Trotter | for group in target: |
71 | 6e34b628 | Guido Trotter | target[group] = FillDict(defaults, target[group]) |
72 | 6e34b628 | Guido Trotter | return target
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73 | 6e34b628 | Guido Trotter | |
74 | 6e34b628 | Guido Trotter | |
75 | a8083063 | Iustin Pop | class ConfigObject(object): |
76 | a8083063 | Iustin Pop | """A generic config object.
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77 | a8083063 | Iustin Pop |
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78 | a8083063 | Iustin Pop | It has the following properties:
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79 | a8083063 | Iustin Pop |
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80 | a8083063 | Iustin Pop | - provides somewhat safe recursive unpickling and pickling for its classes
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81 | a8083063 | Iustin Pop | - unset attributes which are defined in slots are always returned
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82 | a8083063 | Iustin Pop | as None instead of raising an error
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83 | a8083063 | Iustin Pop |
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84 | a8083063 | Iustin Pop | Classes derived from this must always declare __slots__ (we use many
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85 | 55224070 | Guido Trotter | config objects and the memory reduction is useful)
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86 | a8083063 | Iustin Pop |
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87 | a8083063 | Iustin Pop | """
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88 | a8083063 | Iustin Pop | __slots__ = [] |
89 | a8083063 | Iustin Pop | |
90 | a8083063 | Iustin Pop | def __init__(self, **kwargs): |
91 | 319856a9 | Michael Hanselmann | for k, v in kwargs.iteritems(): |
92 | 319856a9 | Michael Hanselmann | setattr(self, k, v) |
93 | 560428be | Guido Trotter | self.UpgradeConfig()
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94 | a8083063 | Iustin Pop | |
95 | a8083063 | Iustin Pop | def __getattr__(self, name): |
96 | a8083063 | Iustin Pop | if name not in self.__slots__: |
97 | 3ecf6786 | Iustin Pop | raise AttributeError("Invalid object attribute %s.%s" % |
98 | 3ecf6786 | Iustin Pop | (type(self).__name__, name)) |
99 | a8083063 | Iustin Pop | return None |
100 | a8083063 | Iustin Pop | |
101 | 47c28c5b | Michael Hanselmann | def __setitem__(self, key, value): |
102 | 47c28c5b | Michael Hanselmann | if key not in self.__slots__: |
103 | 3ecf6786 | Iustin Pop | raise KeyError(key) |
104 | 47c28c5b | Michael Hanselmann | setattr(self, key, value) |
105 | 47c28c5b | Michael Hanselmann | |
106 | a8083063 | Iustin Pop | def __getstate__(self): |
107 | a8083063 | Iustin Pop | state = {} |
108 | a8083063 | Iustin Pop | for name in self.__slots__: |
109 | a8083063 | Iustin Pop | if hasattr(self, name): |
110 | a8083063 | Iustin Pop | state[name] = getattr(self, name) |
111 | a8083063 | Iustin Pop | return state
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112 | a8083063 | Iustin Pop | |
113 | a8083063 | Iustin Pop | def __setstate__(self, state): |
114 | a8083063 | Iustin Pop | for name in state: |
115 | a8083063 | Iustin Pop | if name in self.__slots__: |
116 | a8083063 | Iustin Pop | setattr(self, name, state[name]) |
117 | a8083063 | Iustin Pop | |
118 | ff9c047c | Iustin Pop | def ToDict(self): |
119 | ff9c047c | Iustin Pop | """Convert to a dict holding only standard python types.
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120 | ff9c047c | Iustin Pop |
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121 | ff9c047c | Iustin Pop | The generic routine just dumps all of this object's attributes in
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122 | ff9c047c | Iustin Pop | a dict. It does not work if the class has children who are
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123 | ff9c047c | Iustin Pop | ConfigObjects themselves (e.g. the nics list in an Instance), in
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124 | ff9c047c | Iustin Pop | which case the object should subclass the function in order to
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125 | ff9c047c | Iustin Pop | make sure all objects returned are only standard python types.
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126 | ff9c047c | Iustin Pop |
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127 | ff9c047c | Iustin Pop | """
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128 | ff9c047c | Iustin Pop | return dict([(k, getattr(self, k, None)) for k in self.__slots__]) |
129 | ff9c047c | Iustin Pop | |
130 | ff9c047c | Iustin Pop | @classmethod
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131 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
132 | ff9c047c | Iustin Pop | """Create an object from a dictionary.
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133 | ff9c047c | Iustin Pop |
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134 | ff9c047c | Iustin Pop | This generic routine takes a dict, instantiates a new instance of
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135 | ff9c047c | Iustin Pop | the given class, and sets attributes based on the dict content.
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136 | ff9c047c | Iustin Pop |
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137 | ff9c047c | Iustin Pop | As for `ToDict`, this does not work if the class has children
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138 | ff9c047c | Iustin Pop | who are ConfigObjects themselves (e.g. the nics list in an
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139 | ff9c047c | Iustin Pop | Instance), in which case the object should subclass the function
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140 | ff9c047c | Iustin Pop | and alter the objects.
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141 | ff9c047c | Iustin Pop |
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142 | ff9c047c | Iustin Pop | """
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143 | ff9c047c | Iustin Pop | if not isinstance(val, dict): |
144 | ff9c047c | Iustin Pop | raise errors.ConfigurationError("Invalid object passed to FromDict:" |
145 | ff9c047c | Iustin Pop | " expected dict, got %s" % type(val)) |
146 | 319856a9 | Michael Hanselmann | val_str = dict([(str(k), v) for k, v in val.iteritems()]) |
147 | 319856a9 | Michael Hanselmann | obj = cls(**val_str) |
148 | ff9c047c | Iustin Pop | return obj
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149 | ff9c047c | Iustin Pop | |
150 | ff9c047c | Iustin Pop | @staticmethod
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151 | ff9c047c | Iustin Pop | def _ContainerToDicts(container): |
152 | ff9c047c | Iustin Pop | """Convert the elements of a container to standard python types.
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153 | ff9c047c | Iustin Pop |
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154 | ff9c047c | Iustin Pop | This method converts a container with elements derived from
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155 | ff9c047c | Iustin Pop | ConfigData to standard python types. If the container is a dict,
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156 | ff9c047c | Iustin Pop | we don't touch the keys, only the values.
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157 | ff9c047c | Iustin Pop |
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158 | ff9c047c | Iustin Pop | """
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159 | ff9c047c | Iustin Pop | if isinstance(container, dict): |
160 | ff9c047c | Iustin Pop | ret = dict([(k, v.ToDict()) for k, v in container.iteritems()]) |
161 | ff9c047c | Iustin Pop | elif isinstance(container, (list, tuple, set, frozenset)): |
162 | ff9c047c | Iustin Pop | ret = [elem.ToDict() for elem in container] |
163 | ff9c047c | Iustin Pop | else:
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164 | ff9c047c | Iustin Pop | raise TypeError("Invalid type %s passed to _ContainerToDicts" % |
165 | ff9c047c | Iustin Pop | type(container))
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166 | ff9c047c | Iustin Pop | return ret
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167 | ff9c047c | Iustin Pop | |
168 | ff9c047c | Iustin Pop | @staticmethod
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169 | ff9c047c | Iustin Pop | def _ContainerFromDicts(source, c_type, e_type): |
170 | ff9c047c | Iustin Pop | """Convert a container from standard python types.
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171 | ff9c047c | Iustin Pop |
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172 | ff9c047c | Iustin Pop | This method converts a container with standard python types to
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173 | ff9c047c | Iustin Pop | ConfigData objects. If the container is a dict, we don't touch the
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174 | ff9c047c | Iustin Pop | keys, only the values.
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175 | ff9c047c | Iustin Pop |
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176 | ff9c047c | Iustin Pop | """
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177 | ff9c047c | Iustin Pop | if not isinstance(c_type, type): |
178 | ff9c047c | Iustin Pop | raise TypeError("Container type %s passed to _ContainerFromDicts is" |
179 | ff9c047c | Iustin Pop | " not a type" % type(c_type)) |
180 | ff9c047c | Iustin Pop | if c_type is dict: |
181 | ff9c047c | Iustin Pop | ret = dict([(k, e_type.FromDict(v)) for k, v in source.iteritems()]) |
182 | ff9c047c | Iustin Pop | elif c_type in (list, tuple, set, frozenset): |
183 | ff9c047c | Iustin Pop | ret = c_type([e_type.FromDict(elem) for elem in source]) |
184 | ff9c047c | Iustin Pop | else:
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185 | ff9c047c | Iustin Pop | raise TypeError("Invalid container type %s passed to" |
186 | ff9c047c | Iustin Pop | " _ContainerFromDicts" % c_type)
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187 | ff9c047c | Iustin Pop | return ret
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188 | ff9c047c | Iustin Pop | |
189 | ff9c047c | Iustin Pop | def __repr__(self): |
190 | ff9c047c | Iustin Pop | """Implement __repr__ for ConfigObjects."""
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191 | ff9c047c | Iustin Pop | return repr(self.ToDict()) |
192 | ff9c047c | Iustin Pop | |
193 | 560428be | Guido Trotter | def UpgradeConfig(self): |
194 | 560428be | Guido Trotter | """Fill defaults for missing configuration values.
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195 | 560428be | Guido Trotter |
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196 | 560428be | Guido Trotter | This method will be called at object init time, and its implementation will
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197 | 560428be | Guido Trotter | be object dependent.
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198 | 560428be | Guido Trotter |
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199 | 560428be | Guido Trotter | """
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200 | 560428be | Guido Trotter | pass
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201 | 560428be | Guido Trotter | |
202 | a8083063 | Iustin Pop | |
203 | ec29fe40 | Iustin Pop | class TaggableObject(ConfigObject): |
204 | 5c947f38 | Iustin Pop | """An generic class supporting tags.
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205 | 5c947f38 | Iustin Pop |
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206 | 5c947f38 | Iustin Pop | """
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207 | ec29fe40 | Iustin Pop | __slots__ = ConfigObject.__slots__ + ["tags"]
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208 | 2057f6c7 | Iustin Pop | |
209 | 5c947f38 | Iustin Pop | @staticmethod
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210 | 5c947f38 | Iustin Pop | def ValidateTag(tag): |
211 | 5c947f38 | Iustin Pop | """Check if a tag is valid.
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212 | 5c947f38 | Iustin Pop |
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213 | 5c947f38 | Iustin Pop | If the tag is invalid, an errors.TagError will be raised. The
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214 | 5c947f38 | Iustin Pop | function has no return value.
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215 | 5c947f38 | Iustin Pop |
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216 | 5c947f38 | Iustin Pop | """
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217 | 5c947f38 | Iustin Pop | if not isinstance(tag, basestring): |
218 | 3ecf6786 | Iustin Pop | raise errors.TagError("Invalid tag type (not a string)") |
219 | 5c947f38 | Iustin Pop | if len(tag) > constants.MAX_TAG_LEN: |
220 | 319856a9 | Michael Hanselmann | raise errors.TagError("Tag too long (>%d characters)" % |
221 | 319856a9 | Michael Hanselmann | constants.MAX_TAG_LEN) |
222 | 5c947f38 | Iustin Pop | if not tag: |
223 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tags cannot be empty") |
224 | 28ab6fed | Iustin Pop | if not re.match("^[\w.+*/:-]+$", tag): |
225 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tag contains invalid characters") |
226 | 5c947f38 | Iustin Pop | |
227 | 5c947f38 | Iustin Pop | def GetTags(self): |
228 | 5c947f38 | Iustin Pop | """Return the tags list.
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229 | 5c947f38 | Iustin Pop |
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230 | 5c947f38 | Iustin Pop | """
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231 | 5c947f38 | Iustin Pop | tags = getattr(self, "tags", None) |
232 | 5c947f38 | Iustin Pop | if tags is None: |
233 | 5c947f38 | Iustin Pop | tags = self.tags = set() |
234 | 5c947f38 | Iustin Pop | return tags
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235 | 5c947f38 | Iustin Pop | |
236 | 5c947f38 | Iustin Pop | def AddTag(self, tag): |
237 | 5c947f38 | Iustin Pop | """Add a new tag.
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238 | 5c947f38 | Iustin Pop |
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239 | 5c947f38 | Iustin Pop | """
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240 | 5c947f38 | Iustin Pop | self.ValidateTag(tag)
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241 | 5c947f38 | Iustin Pop | tags = self.GetTags()
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242 | 5c947f38 | Iustin Pop | if len(tags) >= constants.MAX_TAGS_PER_OBJ: |
243 | 3ecf6786 | Iustin Pop | raise errors.TagError("Too many tags") |
244 | 5c947f38 | Iustin Pop | self.GetTags().add(tag)
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245 | 5c947f38 | Iustin Pop | |
246 | 5c947f38 | Iustin Pop | def RemoveTag(self, tag): |
247 | 5c947f38 | Iustin Pop | """Remove a tag.
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248 | 5c947f38 | Iustin Pop |
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249 | 5c947f38 | Iustin Pop | """
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250 | 5c947f38 | Iustin Pop | self.ValidateTag(tag)
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251 | 5c947f38 | Iustin Pop | tags = self.GetTags()
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252 | 5c947f38 | Iustin Pop | try:
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253 | 5c947f38 | Iustin Pop | tags.remove(tag) |
254 | 5c947f38 | Iustin Pop | except KeyError: |
255 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tag not found") |
256 | 5c947f38 | Iustin Pop | |
257 | ff9c047c | Iustin Pop | def ToDict(self): |
258 | ff9c047c | Iustin Pop | """Taggable-object-specific conversion to standard python types.
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259 | ff9c047c | Iustin Pop |
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260 | ff9c047c | Iustin Pop | This replaces the tags set with a list.
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261 | ff9c047c | Iustin Pop |
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262 | ff9c047c | Iustin Pop | """
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263 | ff9c047c | Iustin Pop | bo = super(TaggableObject, self).ToDict() |
264 | ff9c047c | Iustin Pop | |
265 | ff9c047c | Iustin Pop | tags = bo.get("tags", None) |
266 | ff9c047c | Iustin Pop | if isinstance(tags, set): |
267 | ff9c047c | Iustin Pop | bo["tags"] = list(tags) |
268 | ff9c047c | Iustin Pop | return bo
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269 | ff9c047c | Iustin Pop | |
270 | ff9c047c | Iustin Pop | @classmethod
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271 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
272 | ff9c047c | Iustin Pop | """Custom function for instances.
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273 | ff9c047c | Iustin Pop |
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274 | ff9c047c | Iustin Pop | """
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275 | ff9c047c | Iustin Pop | obj = super(TaggableObject, cls).FromDict(val)
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276 | ff9c047c | Iustin Pop | if hasattr(obj, "tags") and isinstance(obj.tags, list): |
277 | ff9c047c | Iustin Pop | obj.tags = set(obj.tags)
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278 | ff9c047c | Iustin Pop | return obj
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279 | ff9c047c | Iustin Pop | |
280 | 5c947f38 | Iustin Pop | |
281 | a8083063 | Iustin Pop | class ConfigData(ConfigObject): |
282 | a8083063 | Iustin Pop | """Top-level config object."""
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283 | f6bd6e98 | Michael Hanselmann | __slots__ = ["version", "cluster", "nodes", "instances", "serial_no"] |
284 | a8083063 | Iustin Pop | |
285 | ff9c047c | Iustin Pop | def ToDict(self): |
286 | ff9c047c | Iustin Pop | """Custom function for top-level config data.
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287 | ff9c047c | Iustin Pop |
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288 | ff9c047c | Iustin Pop | This just replaces the list of instances, nodes and the cluster
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289 | ff9c047c | Iustin Pop | with standard python types.
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290 | ff9c047c | Iustin Pop |
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291 | ff9c047c | Iustin Pop | """
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292 | ff9c047c | Iustin Pop | mydict = super(ConfigData, self).ToDict() |
293 | ff9c047c | Iustin Pop | mydict["cluster"] = mydict["cluster"].ToDict() |
294 | ff9c047c | Iustin Pop | for key in "nodes", "instances": |
295 | ff9c047c | Iustin Pop | mydict[key] = self._ContainerToDicts(mydict[key])
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296 | ff9c047c | Iustin Pop | |
297 | ff9c047c | Iustin Pop | return mydict
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298 | ff9c047c | Iustin Pop | |
299 | ff9c047c | Iustin Pop | @classmethod
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300 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
301 | ff9c047c | Iustin Pop | """Custom function for top-level config data
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302 | ff9c047c | Iustin Pop |
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303 | ff9c047c | Iustin Pop | """
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304 | ff9c047c | Iustin Pop | obj = super(ConfigData, cls).FromDict(val)
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305 | ff9c047c | Iustin Pop | obj.cluster = Cluster.FromDict(obj.cluster) |
306 | ff9c047c | Iustin Pop | obj.nodes = cls._ContainerFromDicts(obj.nodes, dict, Node)
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307 | ff9c047c | Iustin Pop | obj.instances = cls._ContainerFromDicts(obj.instances, dict, Instance)
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308 | ff9c047c | Iustin Pop | return obj
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309 | ff9c047c | Iustin Pop | |
310 | a8083063 | Iustin Pop | |
311 | a8083063 | Iustin Pop | class NIC(ConfigObject): |
312 | a8083063 | Iustin Pop | """Config object representing a network card."""
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313 | a8083063 | Iustin Pop | __slots__ = ["mac", "ip", "bridge"] |
314 | a8083063 | Iustin Pop | |
315 | 255e19d4 | Guido Trotter | @classmethod
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316 | 255e19d4 | Guido Trotter | def CheckParameterSyntax(cls, nicparams): |
317 | 255e19d4 | Guido Trotter | """Check the given parameters for validity.
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318 | 255e19d4 | Guido Trotter |
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319 | 255e19d4 | Guido Trotter | @type nicparams: dict
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320 | 255e19d4 | Guido Trotter | @param nicparams: dictionary with parameter names/value
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321 | 255e19d4 | Guido Trotter | @raise errors.ConfigurationError: when a parameter is not valid
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322 | 255e19d4 | Guido Trotter |
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323 | 255e19d4 | Guido Trotter | """
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324 | 255e19d4 | Guido Trotter | if nicparams[constants.NIC_MODE] not in constants.NIC_VALID_MODES: |
325 | 255e19d4 | Guido Trotter | err = "Invalid nic mode: %s" % nicparams[constants.NIC_MODE]
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326 | 255e19d4 | Guido Trotter | raise errors.ConfigurationError(err)
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327 | 255e19d4 | Guido Trotter | |
328 | 255e19d4 | Guido Trotter | if (nicparams[constants.NIC_MODE] is constants.NIC_MODE_BRIDGED and |
329 | 255e19d4 | Guido Trotter | not nicparams[constants.NIC_LINK]):
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330 | 255e19d4 | Guido Trotter | err = "Missing bridged nic link"
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331 | 255e19d4 | Guido Trotter | raise errors.ConfigurationError(err)
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332 | 255e19d4 | Guido Trotter | |
333 | a8083063 | Iustin Pop | |
334 | a8083063 | Iustin Pop | class Disk(ConfigObject): |
335 | a8083063 | Iustin Pop | """Config object representing a block device."""
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336 | a8083063 | Iustin Pop | __slots__ = ["dev_type", "logical_id", "physical_id", |
337 | 08db7c5c | Iustin Pop | "children", "iv_name", "size", "mode"] |
338 | a8083063 | Iustin Pop | |
339 | a8083063 | Iustin Pop | def CreateOnSecondary(self): |
340 | a8083063 | Iustin Pop | """Test if this device needs to be created on a secondary node."""
|
341 | 00fb8246 | Michael Hanselmann | return self.dev_type in (constants.LD_DRBD8, constants.LD_LV) |
342 | a8083063 | Iustin Pop | |
343 | a8083063 | Iustin Pop | def AssembleOnSecondary(self): |
344 | a8083063 | Iustin Pop | """Test if this device needs to be assembled on a secondary node."""
|
345 | 00fb8246 | Michael Hanselmann | return self.dev_type in (constants.LD_DRBD8, constants.LD_LV) |
346 | a8083063 | Iustin Pop | |
347 | a8083063 | Iustin Pop | def OpenOnSecondary(self): |
348 | a8083063 | Iustin Pop | """Test if this device needs to be opened on a secondary node."""
|
349 | fe96220b | Iustin Pop | return self.dev_type in (constants.LD_LV,) |
350 | a8083063 | Iustin Pop | |
351 | 222f2dd5 | Iustin Pop | def StaticDevPath(self): |
352 | 222f2dd5 | Iustin Pop | """Return the device path if this device type has a static one.
|
353 | 222f2dd5 | Iustin Pop |
|
354 | 222f2dd5 | Iustin Pop | Some devices (LVM for example) live always at the same /dev/ path,
|
355 | 222f2dd5 | Iustin Pop | irrespective of their status. For such devices, we return this
|
356 | 222f2dd5 | Iustin Pop | path, for others we return None.
|
357 | 222f2dd5 | Iustin Pop |
|
358 | 222f2dd5 | Iustin Pop | """
|
359 | 222f2dd5 | Iustin Pop | if self.dev_type == constants.LD_LV: |
360 | 222f2dd5 | Iustin Pop | return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1]) |
361 | 222f2dd5 | Iustin Pop | return None |
362 | 222f2dd5 | Iustin Pop | |
363 | fc1dc9d7 | Iustin Pop | def ChildrenNeeded(self): |
364 | fc1dc9d7 | Iustin Pop | """Compute the needed number of children for activation.
|
365 | fc1dc9d7 | Iustin Pop |
|
366 | fc1dc9d7 | Iustin Pop | This method will return either -1 (all children) or a positive
|
367 | fc1dc9d7 | Iustin Pop | number denoting the minimum number of children needed for
|
368 | fc1dc9d7 | Iustin Pop | activation (only mirrored devices will usually return >=0).
|
369 | fc1dc9d7 | Iustin Pop |
|
370 | fc1dc9d7 | Iustin Pop | Currently, only DRBD8 supports diskless activation (therefore we
|
371 | fc1dc9d7 | Iustin Pop | return 0), for all other we keep the previous semantics and return
|
372 | fc1dc9d7 | Iustin Pop | -1.
|
373 | fc1dc9d7 | Iustin Pop |
|
374 | fc1dc9d7 | Iustin Pop | """
|
375 | fc1dc9d7 | Iustin Pop | if self.dev_type == constants.LD_DRBD8: |
376 | fc1dc9d7 | Iustin Pop | return 0 |
377 | fc1dc9d7 | Iustin Pop | return -1 |
378 | fc1dc9d7 | Iustin Pop | |
379 | a8083063 | Iustin Pop | def GetNodes(self, node): |
380 | a8083063 | Iustin Pop | """This function returns the nodes this device lives on.
|
381 | a8083063 | Iustin Pop |
|
382 | a8083063 | Iustin Pop | Given the node on which the parent of the device lives on (or, in
|
383 | a8083063 | Iustin Pop | case of a top-level device, the primary node of the devices'
|
384 | a8083063 | Iustin Pop | instance), this function will return a list of nodes on which this
|
385 | a8083063 | Iustin Pop | devices needs to (or can) be assembled.
|
386 | a8083063 | Iustin Pop |
|
387 | a8083063 | Iustin Pop | """
|
388 | 00fb8246 | Michael Hanselmann | if self.dev_type in [constants.LD_LV, constants.LD_FILE]: |
389 | a8083063 | Iustin Pop | result = [node] |
390 | a1f445d3 | Iustin Pop | elif self.dev_type in constants.LDS_DRBD: |
391 | a8083063 | Iustin Pop | result = [self.logical_id[0], self.logical_id[1]] |
392 | a8083063 | Iustin Pop | if node not in result: |
393 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device passed unknown node") |
394 | a8083063 | Iustin Pop | else:
|
395 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unhandled device type %s" % self.dev_type) |
396 | a8083063 | Iustin Pop | return result
|
397 | a8083063 | Iustin Pop | |
398 | a8083063 | Iustin Pop | def ComputeNodeTree(self, parent_node): |
399 | a8083063 | Iustin Pop | """Compute the node/disk tree for this disk and its children.
|
400 | a8083063 | Iustin Pop |
|
401 | a8083063 | Iustin Pop | This method, given the node on which the parent disk lives, will
|
402 | a8083063 | Iustin Pop | return the list of all (node, disk) pairs which describe the disk
|
403 | abdf0113 | Iustin Pop | tree in the most compact way. For example, a drbd/lvm stack
|
404 | abdf0113 | Iustin Pop | will be returned as (primary_node, drbd) and (secondary_node, drbd)
|
405 | abdf0113 | Iustin Pop | which represents all the top-level devices on the nodes.
|
406 | a8083063 | Iustin Pop |
|
407 | a8083063 | Iustin Pop | """
|
408 | a8083063 | Iustin Pop | my_nodes = self.GetNodes(parent_node)
|
409 | a8083063 | Iustin Pop | result = [(node, self) for node in my_nodes] |
410 | a8083063 | Iustin Pop | if not self.children: |
411 | a8083063 | Iustin Pop | # leaf device
|
412 | a8083063 | Iustin Pop | return result
|
413 | a8083063 | Iustin Pop | for node in my_nodes: |
414 | a8083063 | Iustin Pop | for child in self.children: |
415 | a8083063 | Iustin Pop | child_result = child.ComputeNodeTree(node) |
416 | a8083063 | Iustin Pop | if len(child_result) == 1: |
417 | a8083063 | Iustin Pop | # child (and all its descendants) is simple, doesn't split
|
418 | a8083063 | Iustin Pop | # over multiple hosts, so we don't need to describe it, our
|
419 | a8083063 | Iustin Pop | # own entry for this node describes it completely
|
420 | a8083063 | Iustin Pop | continue
|
421 | a8083063 | Iustin Pop | else:
|
422 | a8083063 | Iustin Pop | # check if child nodes differ from my nodes; note that
|
423 | a8083063 | Iustin Pop | # subdisk can differ from the child itself, and be instead
|
424 | a8083063 | Iustin Pop | # one of its descendants
|
425 | a8083063 | Iustin Pop | for subnode, subdisk in child_result: |
426 | a8083063 | Iustin Pop | if subnode not in my_nodes: |
427 | a8083063 | Iustin Pop | result.append((subnode, subdisk)) |
428 | a8083063 | Iustin Pop | # otherwise child is under our own node, so we ignore this
|
429 | a8083063 | Iustin Pop | # entry (but probably the other results in the list will
|
430 | a8083063 | Iustin Pop | # be different)
|
431 | a8083063 | Iustin Pop | return result
|
432 | a8083063 | Iustin Pop | |
433 | acec9d51 | Iustin Pop | def RecordGrow(self, amount): |
434 | acec9d51 | Iustin Pop | """Update the size of this disk after growth.
|
435 | acec9d51 | Iustin Pop |
|
436 | acec9d51 | Iustin Pop | This method recurses over the disks's children and updates their
|
437 | acec9d51 | Iustin Pop | size correspondigly. The method needs to be kept in sync with the
|
438 | acec9d51 | Iustin Pop | actual algorithms from bdev.
|
439 | acec9d51 | Iustin Pop |
|
440 | acec9d51 | Iustin Pop | """
|
441 | acec9d51 | Iustin Pop | if self.dev_type == constants.LD_LV: |
442 | acec9d51 | Iustin Pop | self.size += amount
|
443 | acec9d51 | Iustin Pop | elif self.dev_type == constants.LD_DRBD8: |
444 | acec9d51 | Iustin Pop | if self.children: |
445 | acec9d51 | Iustin Pop | self.children[0].RecordGrow(amount) |
446 | acec9d51 | Iustin Pop | self.size += amount
|
447 | acec9d51 | Iustin Pop | else:
|
448 | acec9d51 | Iustin Pop | raise errors.ProgrammerError("Disk.RecordGrow called for unsupported" |
449 | acec9d51 | Iustin Pop | " disk type %s" % self.dev_type) |
450 | acec9d51 | Iustin Pop | |
451 | 0402302c | Iustin Pop | def SetPhysicalID(self, target_node, nodes_ip): |
452 | 0402302c | Iustin Pop | """Convert the logical ID to the physical ID.
|
453 | 0402302c | Iustin Pop |
|
454 | 0402302c | Iustin Pop | This is used only for drbd, which needs ip/port configuration.
|
455 | 0402302c | Iustin Pop |
|
456 | 0402302c | Iustin Pop | The routine descends down and updates its children also, because
|
457 | 0402302c | Iustin Pop | this helps when the only the top device is passed to the remote
|
458 | 0402302c | Iustin Pop | node.
|
459 | 0402302c | Iustin Pop |
|
460 | 0402302c | Iustin Pop | Arguments:
|
461 | 0402302c | Iustin Pop | - target_node: the node we wish to configure for
|
462 | 0402302c | Iustin Pop | - nodes_ip: a mapping of node name to ip
|
463 | 0402302c | Iustin Pop |
|
464 | 0402302c | Iustin Pop | The target_node must exist in in nodes_ip, and must be one of the
|
465 | 0402302c | Iustin Pop | nodes in the logical ID for each of the DRBD devices encountered
|
466 | 0402302c | Iustin Pop | in the disk tree.
|
467 | 0402302c | Iustin Pop |
|
468 | 0402302c | Iustin Pop | """
|
469 | 0402302c | Iustin Pop | if self.children: |
470 | 0402302c | Iustin Pop | for child in self.children: |
471 | 0402302c | Iustin Pop | child.SetPhysicalID(target_node, nodes_ip) |
472 | 0402302c | Iustin Pop | |
473 | 0402302c | Iustin Pop | if self.logical_id is None and self.physical_id is not None: |
474 | 0402302c | Iustin Pop | return
|
475 | 0402302c | Iustin Pop | if self.dev_type in constants.LDS_DRBD: |
476 | f9518d38 | Iustin Pop | pnode, snode, port, pminor, sminor, secret = self.logical_id
|
477 | 0402302c | Iustin Pop | if target_node not in (pnode, snode): |
478 | 0402302c | Iustin Pop | raise errors.ConfigurationError("DRBD device not knowing node %s" % |
479 | 0402302c | Iustin Pop | target_node) |
480 | 0402302c | Iustin Pop | pnode_ip = nodes_ip.get(pnode, None)
|
481 | 0402302c | Iustin Pop | snode_ip = nodes_ip.get(snode, None)
|
482 | 0402302c | Iustin Pop | if pnode_ip is None or snode_ip is None: |
483 | 0402302c | Iustin Pop | raise errors.ConfigurationError("Can't find primary or secondary node" |
484 | 0402302c | Iustin Pop | " for %s" % str(self)) |
485 | ffa1c0dc | Iustin Pop | p_data = (pnode_ip, port) |
486 | ffa1c0dc | Iustin Pop | s_data = (snode_ip, port) |
487 | 0402302c | Iustin Pop | if pnode == target_node:
|
488 | f9518d38 | Iustin Pop | self.physical_id = p_data + s_data + (pminor, secret)
|
489 | 0402302c | Iustin Pop | else: # it must be secondary, we tested above |
490 | f9518d38 | Iustin Pop | self.physical_id = s_data + p_data + (sminor, secret)
|
491 | 0402302c | Iustin Pop | else:
|
492 | 0402302c | Iustin Pop | self.physical_id = self.logical_id |
493 | 0402302c | Iustin Pop | return
|
494 | 0402302c | Iustin Pop | |
495 | ff9c047c | Iustin Pop | def ToDict(self): |
496 | ff9c047c | Iustin Pop | """Disk-specific conversion to standard python types.
|
497 | ff9c047c | Iustin Pop |
|
498 | ff9c047c | Iustin Pop | This replaces the children lists of objects with lists of
|
499 | ff9c047c | Iustin Pop | standard python types.
|
500 | ff9c047c | Iustin Pop |
|
501 | ff9c047c | Iustin Pop | """
|
502 | ff9c047c | Iustin Pop | bo = super(Disk, self).ToDict() |
503 | ff9c047c | Iustin Pop | |
504 | ff9c047c | Iustin Pop | for attr in ("children",): |
505 | ff9c047c | Iustin Pop | alist = bo.get(attr, None)
|
506 | ff9c047c | Iustin Pop | if alist:
|
507 | ff9c047c | Iustin Pop | bo[attr] = self._ContainerToDicts(alist)
|
508 | ff9c047c | Iustin Pop | return bo
|
509 | ff9c047c | Iustin Pop | |
510 | ff9c047c | Iustin Pop | @classmethod
|
511 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
512 | ff9c047c | Iustin Pop | """Custom function for Disks
|
513 | ff9c047c | Iustin Pop |
|
514 | ff9c047c | Iustin Pop | """
|
515 | ff9c047c | Iustin Pop | obj = super(Disk, cls).FromDict(val)
|
516 | ff9c047c | Iustin Pop | if obj.children:
|
517 | ff9c047c | Iustin Pop | obj.children = cls._ContainerFromDicts(obj.children, list, Disk)
|
518 | ff9c047c | Iustin Pop | if obj.logical_id and isinstance(obj.logical_id, list): |
519 | ff9c047c | Iustin Pop | obj.logical_id = tuple(obj.logical_id)
|
520 | ff9c047c | Iustin Pop | if obj.physical_id and isinstance(obj.physical_id, list): |
521 | ff9c047c | Iustin Pop | obj.physical_id = tuple(obj.physical_id)
|
522 | f9518d38 | Iustin Pop | if obj.dev_type in constants.LDS_DRBD: |
523 | f9518d38 | Iustin Pop | # we need a tuple of length six here
|
524 | f9518d38 | Iustin Pop | if len(obj.logical_id) < 6: |
525 | f9518d38 | Iustin Pop | obj.logical_id += (None,) * (6 - len(obj.logical_id)) |
526 | ff9c047c | Iustin Pop | return obj
|
527 | ff9c047c | Iustin Pop | |
528 | 65a15336 | Iustin Pop | def __str__(self): |
529 | 65a15336 | Iustin Pop | """Custom str() formatter for disks.
|
530 | 65a15336 | Iustin Pop |
|
531 | 65a15336 | Iustin Pop | """
|
532 | 65a15336 | Iustin Pop | if self.dev_type == constants.LD_LV: |
533 | 65a15336 | Iustin Pop | val = "<LogicalVolume(/dev/%s/%s" % self.logical_id |
534 | 65a15336 | Iustin Pop | elif self.dev_type in constants.LDS_DRBD: |
535 | 89f28b76 | Iustin Pop | node_a, node_b, port, minor_a, minor_b = self.logical_id[:5] |
536 | 00fb8246 | Michael Hanselmann | val = "<DRBD8("
|
537 | 073ca59e | Iustin Pop | if self.physical_id is None: |
538 | 073ca59e | Iustin Pop | phy = "unconfigured"
|
539 | 073ca59e | Iustin Pop | else:
|
540 | 073ca59e | Iustin Pop | phy = ("configured as %s:%s %s:%s" %
|
541 | 25a915d0 | Iustin Pop | (self.physical_id[0], self.physical_id[1], |
542 | 25a915d0 | Iustin Pop | self.physical_id[2], self.physical_id[3])) |
543 | 073ca59e | Iustin Pop | |
544 | 89f28b76 | Iustin Pop | val += ("hosts=%s/%d-%s/%d, port=%s, %s, " %
|
545 | 89f28b76 | Iustin Pop | (node_a, minor_a, node_b, minor_b, port, phy)) |
546 | 65a15336 | Iustin Pop | if self.children and self.children.count(None) == 0: |
547 | 65a15336 | Iustin Pop | val += "backend=%s, metadev=%s" % (self.children[0], self.children[1]) |
548 | 65a15336 | Iustin Pop | else:
|
549 | 65a15336 | Iustin Pop | val += "no local storage"
|
550 | 65a15336 | Iustin Pop | else:
|
551 | 65a15336 | Iustin Pop | val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
|
552 | 65a15336 | Iustin Pop | (self.dev_type, self.logical_id, self.physical_id, self.children)) |
553 | 65a15336 | Iustin Pop | if self.iv_name is None: |
554 | 65a15336 | Iustin Pop | val += ", not visible"
|
555 | 65a15336 | Iustin Pop | else:
|
556 | 65a15336 | Iustin Pop | val += ", visible as /dev/%s" % self.iv_name |
557 | fd965830 | Iustin Pop | if isinstance(self.size, int): |
558 | fd965830 | Iustin Pop | val += ", size=%dm)>" % self.size |
559 | fd965830 | Iustin Pop | else:
|
560 | fd965830 | Iustin Pop | val += ", size='%s')>" % (self.size,) |
561 | 65a15336 | Iustin Pop | return val
|
562 | 65a15336 | Iustin Pop | |
563 | 332d0e37 | Iustin Pop | def Verify(self): |
564 | 332d0e37 | Iustin Pop | """Checks that this disk is correctly configured.
|
565 | 332d0e37 | Iustin Pop |
|
566 | 332d0e37 | Iustin Pop | """
|
567 | 332d0e37 | Iustin Pop | errors = [] |
568 | 332d0e37 | Iustin Pop | if self.mode not in constants.DISK_ACCESS_SET: |
569 | 332d0e37 | Iustin Pop | errors.append("Disk access mode '%s' is invalid" % (self.mode, )) |
570 | 332d0e37 | Iustin Pop | return errors
|
571 | 332d0e37 | Iustin Pop | |
572 | a8083063 | Iustin Pop | |
573 | ec29fe40 | Iustin Pop | class Instance(TaggableObject): |
574 | a8083063 | Iustin Pop | """Config object representing an instance."""
|
575 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
576 | a8083063 | Iustin Pop | "name",
|
577 | a8083063 | Iustin Pop | "primary_node",
|
578 | a8083063 | Iustin Pop | "os",
|
579 | e69d05fd | Iustin Pop | "hypervisor",
|
580 | 5bf7b5cf | Iustin Pop | "hvparams",
|
581 | 5bf7b5cf | Iustin Pop | "beparams",
|
582 | 0d68c45d | Iustin Pop | "admin_up",
|
583 | a8083063 | Iustin Pop | "nics",
|
584 | a8083063 | Iustin Pop | "disks",
|
585 | a8083063 | Iustin Pop | "disk_template",
|
586 | 58acb49d | Alexander Schreiber | "network_port",
|
587 | be1fa613 | Iustin Pop | "serial_no",
|
588 | a8083063 | Iustin Pop | ] |
589 | a8083063 | Iustin Pop | |
590 | a8083063 | Iustin Pop | def _ComputeSecondaryNodes(self): |
591 | a8083063 | Iustin Pop | """Compute the list of secondary nodes.
|
592 | a8083063 | Iustin Pop |
|
593 | cfcc5c6d | Iustin Pop | This is a simple wrapper over _ComputeAllNodes.
|
594 | cfcc5c6d | Iustin Pop |
|
595 | cfcc5c6d | Iustin Pop | """
|
596 | cfcc5c6d | Iustin Pop | all_nodes = set(self._ComputeAllNodes()) |
597 | cfcc5c6d | Iustin Pop | all_nodes.discard(self.primary_node)
|
598 | cfcc5c6d | Iustin Pop | return tuple(all_nodes) |
599 | cfcc5c6d | Iustin Pop | |
600 | cfcc5c6d | Iustin Pop | secondary_nodes = property(_ComputeSecondaryNodes, None, None, |
601 | cfcc5c6d | Iustin Pop | "List of secondary nodes")
|
602 | cfcc5c6d | Iustin Pop | |
603 | cfcc5c6d | Iustin Pop | def _ComputeAllNodes(self): |
604 | cfcc5c6d | Iustin Pop | """Compute the list of all nodes.
|
605 | cfcc5c6d | Iustin Pop |
|
606 | a8083063 | Iustin Pop | Since the data is already there (in the drbd disks), keeping it as
|
607 | a8083063 | Iustin Pop | a separate normal attribute is redundant and if not properly
|
608 | a8083063 | Iustin Pop | synchronised can cause problems. Thus it's better to compute it
|
609 | a8083063 | Iustin Pop | dynamically.
|
610 | a8083063 | Iustin Pop |
|
611 | a8083063 | Iustin Pop | """
|
612 | cfcc5c6d | Iustin Pop | def _Helper(nodes, device): |
613 | cfcc5c6d | Iustin Pop | """Recursively computes nodes given a top device."""
|
614 | a1f445d3 | Iustin Pop | if device.dev_type in constants.LDS_DRBD: |
615 | cfcc5c6d | Iustin Pop | nodea, nodeb = device.logical_id[:2]
|
616 | cfcc5c6d | Iustin Pop | nodes.add(nodea) |
617 | cfcc5c6d | Iustin Pop | nodes.add(nodeb) |
618 | a8083063 | Iustin Pop | if device.children:
|
619 | a8083063 | Iustin Pop | for child in device.children: |
620 | cfcc5c6d | Iustin Pop | _Helper(nodes, child) |
621 | a8083063 | Iustin Pop | |
622 | cfcc5c6d | Iustin Pop | all_nodes = set()
|
623 | 99c7b2a1 | Iustin Pop | all_nodes.add(self.primary_node)
|
624 | a8083063 | Iustin Pop | for device in self.disks: |
625 | cfcc5c6d | Iustin Pop | _Helper(all_nodes, device) |
626 | cfcc5c6d | Iustin Pop | return tuple(all_nodes) |
627 | a8083063 | Iustin Pop | |
628 | cfcc5c6d | Iustin Pop | all_nodes = property(_ComputeAllNodes, None, None, |
629 | cfcc5c6d | Iustin Pop | "List of all nodes of the instance")
|
630 | a8083063 | Iustin Pop | |
631 | a8083063 | Iustin Pop | def MapLVsByNode(self, lvmap=None, devs=None, node=None): |
632 | a8083063 | Iustin Pop | """Provide a mapping of nodes to LVs this instance owns.
|
633 | a8083063 | Iustin Pop |
|
634 | c41eea6e | Iustin Pop | This function figures out what logical volumes should belong on
|
635 | c41eea6e | Iustin Pop | which nodes, recursing through a device tree.
|
636 | a8083063 | Iustin Pop |
|
637 | c41eea6e | Iustin Pop | @param lvmap: optional dictionary to receive the
|
638 | c41eea6e | Iustin Pop | 'node' : ['lv', ...] data.
|
639 | a8083063 | Iustin Pop |
|
640 | c41eea6e | Iustin Pop | @return: None if lvmap arg is given, otherwise, a dictionary
|
641 | c41eea6e | Iustin Pop | of the form { 'nodename' : ['volume1', 'volume2', ...], ... }
|
642 | a8083063 | Iustin Pop |
|
643 | a8083063 | Iustin Pop | """
|
644 | a8083063 | Iustin Pop | if node == None: |
645 | a8083063 | Iustin Pop | node = self.primary_node
|
646 | a8083063 | Iustin Pop | |
647 | a8083063 | Iustin Pop | if lvmap is None: |
648 | a8083063 | Iustin Pop | lvmap = { node : [] } |
649 | a8083063 | Iustin Pop | ret = lvmap |
650 | a8083063 | Iustin Pop | else:
|
651 | a8083063 | Iustin Pop | if not node in lvmap: |
652 | a8083063 | Iustin Pop | lvmap[node] = [] |
653 | a8083063 | Iustin Pop | ret = None
|
654 | a8083063 | Iustin Pop | |
655 | a8083063 | Iustin Pop | if not devs: |
656 | a8083063 | Iustin Pop | devs = self.disks
|
657 | a8083063 | Iustin Pop | |
658 | a8083063 | Iustin Pop | for dev in devs: |
659 | fe96220b | Iustin Pop | if dev.dev_type == constants.LD_LV:
|
660 | a8083063 | Iustin Pop | lvmap[node].append(dev.logical_id[1])
|
661 | a8083063 | Iustin Pop | |
662 | a1f445d3 | Iustin Pop | elif dev.dev_type in constants.LDS_DRBD: |
663 | a8083063 | Iustin Pop | if dev.children:
|
664 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, dev.logical_id[0]) |
665 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, dev.logical_id[1]) |
666 | a8083063 | Iustin Pop | |
667 | a8083063 | Iustin Pop | elif dev.children:
|
668 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, node)
|
669 | a8083063 | Iustin Pop | |
670 | a8083063 | Iustin Pop | return ret
|
671 | a8083063 | Iustin Pop | |
672 | ad24e046 | Iustin Pop | def FindDisk(self, idx): |
673 | ad24e046 | Iustin Pop | """Find a disk given having a specified index.
|
674 | 644eeef9 | Iustin Pop |
|
675 | ad24e046 | Iustin Pop | This is just a wrapper that does validation of the index.
|
676 | 644eeef9 | Iustin Pop |
|
677 | ad24e046 | Iustin Pop | @type idx: int
|
678 | ad24e046 | Iustin Pop | @param idx: the disk index
|
679 | ad24e046 | Iustin Pop | @rtype: L{Disk}
|
680 | ad24e046 | Iustin Pop | @return: the corresponding disk
|
681 | ad24e046 | Iustin Pop | @raise errors.OpPrereqError: when the given index is not valid
|
682 | 644eeef9 | Iustin Pop |
|
683 | ad24e046 | Iustin Pop | """
|
684 | ad24e046 | Iustin Pop | try:
|
685 | ad24e046 | Iustin Pop | idx = int(idx)
|
686 | ad24e046 | Iustin Pop | return self.disks[idx] |
687 | ad24e046 | Iustin Pop | except ValueError, err: |
688 | ad24e046 | Iustin Pop | raise errors.OpPrereqError("Invalid disk index: '%s'" % str(err)) |
689 | ad24e046 | Iustin Pop | except IndexError: |
690 | ad24e046 | Iustin Pop | raise errors.OpPrereqError("Invalid disk index: %d (instace has disks" |
691 | ad24e046 | Iustin Pop | " 0 to %d" % (idx, len(self.disks))) |
692 | 644eeef9 | Iustin Pop | |
693 | ff9c047c | Iustin Pop | def ToDict(self): |
694 | ff9c047c | Iustin Pop | """Instance-specific conversion to standard python types.
|
695 | ff9c047c | Iustin Pop |
|
696 | ff9c047c | Iustin Pop | This replaces the children lists of objects with lists of standard
|
697 | ff9c047c | Iustin Pop | python types.
|
698 | ff9c047c | Iustin Pop |
|
699 | ff9c047c | Iustin Pop | """
|
700 | ff9c047c | Iustin Pop | bo = super(Instance, self).ToDict() |
701 | ff9c047c | Iustin Pop | |
702 | ff9c047c | Iustin Pop | for attr in "nics", "disks": |
703 | ff9c047c | Iustin Pop | alist = bo.get(attr, None)
|
704 | ff9c047c | Iustin Pop | if alist:
|
705 | ff9c047c | Iustin Pop | nlist = self._ContainerToDicts(alist)
|
706 | ff9c047c | Iustin Pop | else:
|
707 | ff9c047c | Iustin Pop | nlist = [] |
708 | ff9c047c | Iustin Pop | bo[attr] = nlist |
709 | ff9c047c | Iustin Pop | return bo
|
710 | ff9c047c | Iustin Pop | |
711 | ff9c047c | Iustin Pop | @classmethod
|
712 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
713 | ff9c047c | Iustin Pop | """Custom function for instances.
|
714 | ff9c047c | Iustin Pop |
|
715 | ff9c047c | Iustin Pop | """
|
716 | ff9c047c | Iustin Pop | obj = super(Instance, cls).FromDict(val)
|
717 | ff9c047c | Iustin Pop | obj.nics = cls._ContainerFromDicts(obj.nics, list, NIC)
|
718 | ff9c047c | Iustin Pop | obj.disks = cls._ContainerFromDicts(obj.disks, list, Disk)
|
719 | ff9c047c | Iustin Pop | return obj
|
720 | ff9c047c | Iustin Pop | |
721 | a8083063 | Iustin Pop | |
722 | a8083063 | Iustin Pop | class OS(ConfigObject): |
723 | a8083063 | Iustin Pop | """Config object representing an operating system."""
|
724 | a8083063 | Iustin Pop | __slots__ = [ |
725 | a8083063 | Iustin Pop | "name",
|
726 | a8083063 | Iustin Pop | "path",
|
727 | 37482e7b | Guido Trotter | "status",
|
728 | 082a7f91 | Guido Trotter | "api_versions",
|
729 | a8083063 | Iustin Pop | "create_script",
|
730 | a8083063 | Iustin Pop | "export_script",
|
731 | 386b57af | Iustin Pop | "import_script",
|
732 | 386b57af | Iustin Pop | "rename_script",
|
733 | a8083063 | Iustin Pop | ] |
734 | a8083063 | Iustin Pop | |
735 | d2c807e4 | Guido Trotter | @classmethod
|
736 | d2c807e4 | Guido Trotter | def FromInvalidOS(cls, err): |
737 | d2c807e4 | Guido Trotter | """Create an OS from an InvalidOS error.
|
738 | d2c807e4 | Guido Trotter |
|
739 | d2c807e4 | Guido Trotter | This routine knows how to convert an InvalidOS error to an OS
|
740 | d2c807e4 | Guido Trotter | object representing the broken OS with a meaningful error message.
|
741 | d2c807e4 | Guido Trotter |
|
742 | d2c807e4 | Guido Trotter | """
|
743 | d2c807e4 | Guido Trotter | if not isinstance(err, errors.InvalidOS): |
744 | d2c807e4 | Guido Trotter | raise errors.ProgrammerError("Trying to initialize an OS from an" |
745 | d2c807e4 | Guido Trotter | " invalid object of type %s" % type(err)) |
746 | d2c807e4 | Guido Trotter | |
747 | d2c807e4 | Guido Trotter | return cls(name=err.args[0], path=err.args[1], status=err.args[2]) |
748 | d2c807e4 | Guido Trotter | |
749 | 37482e7b | Guido Trotter | def __nonzero__(self): |
750 | 37482e7b | Guido Trotter | return self.status == constants.OS_VALID_STATUS |
751 | 37482e7b | Guido Trotter | |
752 | 37482e7b | Guido Trotter | __bool__ = __nonzero__ |
753 | a8083063 | Iustin Pop | |
754 | 7c0d6283 | Michael Hanselmann | |
755 | ec29fe40 | Iustin Pop | class Node(TaggableObject): |
756 | a8083063 | Iustin Pop | """Config object representing a node."""
|
757 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
758 | ec29fe40 | Iustin Pop | "name",
|
759 | ec29fe40 | Iustin Pop | "primary_ip",
|
760 | ec29fe40 | Iustin Pop | "secondary_ip",
|
761 | be1fa613 | Iustin Pop | "serial_no",
|
762 | 8b8b8b81 | Iustin Pop | "master_candidate",
|
763 | fc0fe88c | Iustin Pop | "offline",
|
764 | af64c0ea | Iustin Pop | "drained",
|
765 | ec29fe40 | Iustin Pop | ] |
766 | a8083063 | Iustin Pop | |
767 | a8083063 | Iustin Pop | |
768 | ec29fe40 | Iustin Pop | class Cluster(TaggableObject): |
769 | a8083063 | Iustin Pop | """Config object representing the cluster."""
|
770 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
771 | a8083063 | Iustin Pop | "serial_no",
|
772 | a8083063 | Iustin Pop | "rsahostkeypub",
|
773 | a8083063 | Iustin Pop | "highest_used_port",
|
774 | b2fddf63 | Iustin Pop | "tcpudp_port_pool",
|
775 | a8083063 | Iustin Pop | "mac_prefix",
|
776 | a8083063 | Iustin Pop | "volume_group_name",
|
777 | a8083063 | Iustin Pop | "default_bridge",
|
778 | 02691904 | Alexander Schreiber | "default_hypervisor",
|
779 | f6bd6e98 | Michael Hanselmann | "master_node",
|
780 | f6bd6e98 | Michael Hanselmann | "master_ip",
|
781 | f6bd6e98 | Michael Hanselmann | "master_netdev",
|
782 | f6bd6e98 | Michael Hanselmann | "cluster_name",
|
783 | f6bd6e98 | Michael Hanselmann | "file_storage_dir",
|
784 | e69d05fd | Iustin Pop | "enabled_hypervisors",
|
785 | 5bf7b5cf | Iustin Pop | "hvparams",
|
786 | 5bf7b5cf | Iustin Pop | "beparams",
|
787 | c8fcde47 | Guido Trotter | "nicparams",
|
788 | 4b7735f9 | Iustin Pop | "candidate_pool_size",
|
789 | b86a6bcd | Guido Trotter | "modify_etc_hosts",
|
790 | a8083063 | Iustin Pop | ] |
791 | a8083063 | Iustin Pop | |
792 | b86a6bcd | Guido Trotter | def UpgradeConfig(self): |
793 | b86a6bcd | Guido Trotter | """Fill defaults for missing configuration values.
|
794 | b86a6bcd | Guido Trotter |
|
795 | b86a6bcd | Guido Trotter | """
|
796 | c1b42c18 | Guido Trotter | if self.hvparams is None: |
797 | c1b42c18 | Guido Trotter | self.hvparams = constants.HVC_DEFAULTS
|
798 | c1b42c18 | Guido Trotter | else:
|
799 | c1b42c18 | Guido Trotter | for hypervisor in self.hvparams: |
800 | abe609b2 | Guido Trotter | self.hvparams[hypervisor] = FillDict(
|
801 | c1b42c18 | Guido Trotter | constants.HVC_DEFAULTS[hypervisor], self.hvparams[hypervisor])
|
802 | c1b42c18 | Guido Trotter | |
803 | 6e34b628 | Guido Trotter | self.beparams = UpgradeGroupedParams(self.beparams, |
804 | 6e34b628 | Guido Trotter | constants.BEC_DEFAULTS) |
805 | c8fcde47 | Guido Trotter | migrate_default_bridge = not self.nicparams |
806 | c8fcde47 | Guido Trotter | self.nicparams = UpgradeGroupedParams(self.nicparams, |
807 | c8fcde47 | Guido Trotter | constants.NICC_DEFAULTS) |
808 | c8fcde47 | Guido Trotter | if migrate_default_bridge:
|
809 | c8fcde47 | Guido Trotter | self.nicparams[constants.PP_DEFAULT][constants.NIC_LINK] = \
|
810 | c8fcde47 | Guido Trotter | self.default_bridge
|
811 | c1b42c18 | Guido Trotter | |
812 | b86a6bcd | Guido Trotter | if self.modify_etc_hosts is None: |
813 | b86a6bcd | Guido Trotter | self.modify_etc_hosts = True |
814 | b86a6bcd | Guido Trotter | |
815 | 319856a9 | Michael Hanselmann | def ToDict(self): |
816 | 319856a9 | Michael Hanselmann | """Custom function for cluster.
|
817 | 319856a9 | Michael Hanselmann |
|
818 | 319856a9 | Michael Hanselmann | """
|
819 | b60ae2ca | Iustin Pop | mydict = super(Cluster, self).ToDict() |
820 | 319856a9 | Michael Hanselmann | mydict["tcpudp_port_pool"] = list(self.tcpudp_port_pool) |
821 | 319856a9 | Michael Hanselmann | return mydict
|
822 | 319856a9 | Michael Hanselmann | |
823 | 319856a9 | Michael Hanselmann | @classmethod
|
824 | 319856a9 | Michael Hanselmann | def FromDict(cls, val): |
825 | 319856a9 | Michael Hanselmann | """Custom function for cluster.
|
826 | 319856a9 | Michael Hanselmann |
|
827 | 319856a9 | Michael Hanselmann | """
|
828 | b60ae2ca | Iustin Pop | obj = super(Cluster, cls).FromDict(val)
|
829 | 319856a9 | Michael Hanselmann | if not isinstance(obj.tcpudp_port_pool, set): |
830 | 319856a9 | Michael Hanselmann | obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
|
831 | 319856a9 | Michael Hanselmann | return obj
|
832 | 319856a9 | Michael Hanselmann | |
833 | 5bf7b5cf | Iustin Pop | def FillHV(self, instance): |
834 | 5bf7b5cf | Iustin Pop | """Fill an instance's hvparams dict.
|
835 | 5bf7b5cf | Iustin Pop |
|
836 | 5bf7b5cf | Iustin Pop | @type instance: object
|
837 | 5bf7b5cf | Iustin Pop | @param instance: the instance parameter to fill
|
838 | 5bf7b5cf | Iustin Pop | @rtype: dict
|
839 | 5bf7b5cf | Iustin Pop | @return: a copy of the instance's hvparams with missing keys filled from
|
840 | 5bf7b5cf | Iustin Pop | the cluster defaults
|
841 | 5bf7b5cf | Iustin Pop |
|
842 | 5bf7b5cf | Iustin Pop | """
|
843 | abe609b2 | Guido Trotter | return FillDict(self.hvparams.get(instance.hypervisor, {}), |
844 | 5bf7b5cf | Iustin Pop | instance.hvparams) |
845 | 5bf7b5cf | Iustin Pop | |
846 | 5bf7b5cf | Iustin Pop | def FillBE(self, instance): |
847 | 5bf7b5cf | Iustin Pop | """Fill an instance's beparams dict.
|
848 | 5bf7b5cf | Iustin Pop |
|
849 | 5bf7b5cf | Iustin Pop | @type instance: object
|
850 | 5bf7b5cf | Iustin Pop | @param instance: the instance parameter to fill
|
851 | 5bf7b5cf | Iustin Pop | @rtype: dict
|
852 | 5bf7b5cf | Iustin Pop | @return: a copy of the instance's beparams with missing keys filled from
|
853 | 5bf7b5cf | Iustin Pop | the cluster defaults
|
854 | 5bf7b5cf | Iustin Pop |
|
855 | 5bf7b5cf | Iustin Pop | """
|
856 | 4ef7f423 | Guido Trotter | return FillDict(self.beparams.get(constants.PP_DEFAULT, {}), |
857 | 4ef7f423 | Guido Trotter | instance.beparams) |
858 | 5bf7b5cf | Iustin Pop | |
859 | 5c947f38 | Iustin Pop | |
860 | a8083063 | Iustin Pop | class SerializableConfigParser(ConfigParser.SafeConfigParser): |
861 | a8083063 | Iustin Pop | """Simple wrapper over ConfigParse that allows serialization.
|
862 | a8083063 | Iustin Pop |
|
863 | a8083063 | Iustin Pop | This class is basically ConfigParser.SafeConfigParser with two
|
864 | a8083063 | Iustin Pop | additional methods that allow it to serialize/unserialize to/from a
|
865 | a8083063 | Iustin Pop | buffer.
|
866 | a8083063 | Iustin Pop |
|
867 | a8083063 | Iustin Pop | """
|
868 | a8083063 | Iustin Pop | def Dumps(self): |
869 | a8083063 | Iustin Pop | """Dump this instance and return the string representation."""
|
870 | a8083063 | Iustin Pop | buf = StringIO() |
871 | a8083063 | Iustin Pop | self.write(buf)
|
872 | a8083063 | Iustin Pop | return buf.getvalue()
|
873 | a8083063 | Iustin Pop | |
874 | a8083063 | Iustin Pop | @staticmethod
|
875 | a8083063 | Iustin Pop | def Loads(data): |
876 | a8083063 | Iustin Pop | """Load data from a string."""
|
877 | a8083063 | Iustin Pop | buf = StringIO(data) |
878 | a8083063 | Iustin Pop | cfp = SerializableConfigParser() |
879 | a8083063 | Iustin Pop | cfp.readfp(buf) |
880 | a8083063 | Iustin Pop | return cfp |