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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 | 319856a9 | Michael Hanselmann | import simplejson |
31 | a8083063 | Iustin Pop | import ConfigParser |
32 | 5c947f38 | Iustin Pop | import re |
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 | a8083063 | Iustin Pop | "OS", "Node", "Cluster"] |
41 | a8083063 | Iustin Pop | |
42 | a8083063 | Iustin Pop | |
43 | d5835922 | Michael Hanselmann | # Check whether the simplejson module supports indentation
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44 | d5835922 | Michael Hanselmann | _JSON_INDENT = 2
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45 | d5835922 | Michael Hanselmann | try:
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46 | d5835922 | Michael Hanselmann | simplejson.dumps(1, indent=_JSON_INDENT)
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47 | d5835922 | Michael Hanselmann | except TypeError: |
48 | d5835922 | Michael Hanselmann | _JSON_INDENT = None
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49 | d5835922 | Michael Hanselmann | |
50 | d5835922 | Michael Hanselmann | |
51 | a8083063 | Iustin Pop | class ConfigObject(object): |
52 | a8083063 | Iustin Pop | """A generic config object.
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53 | a8083063 | Iustin Pop |
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54 | a8083063 | Iustin Pop | It has the following properties:
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55 | a8083063 | Iustin Pop |
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56 | a8083063 | Iustin Pop | - provides somewhat safe recursive unpickling and pickling for its classes
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57 | a8083063 | Iustin Pop | - unset attributes which are defined in slots are always returned
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58 | a8083063 | Iustin Pop | as None instead of raising an error
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59 | a8083063 | Iustin Pop |
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60 | a8083063 | Iustin Pop | Classes derived from this must always declare __slots__ (we use many
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61 | a8083063 | Iustin Pop | config objects and the memory reduction is useful.
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62 | a8083063 | Iustin Pop |
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63 | a8083063 | Iustin Pop | """
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64 | a8083063 | Iustin Pop | __slots__ = [] |
65 | a8083063 | Iustin Pop | |
66 | a8083063 | Iustin Pop | def __init__(self, **kwargs): |
67 | 319856a9 | Michael Hanselmann | for k, v in kwargs.iteritems(): |
68 | 319856a9 | Michael Hanselmann | setattr(self, k, v) |
69 | a8083063 | Iustin Pop | |
70 | a8083063 | Iustin Pop | def __getattr__(self, name): |
71 | a8083063 | Iustin Pop | if name not in self.__slots__: |
72 | 3ecf6786 | Iustin Pop | raise AttributeError("Invalid object attribute %s.%s" % |
73 | 3ecf6786 | Iustin Pop | (type(self).__name__, name)) |
74 | a8083063 | Iustin Pop | return None |
75 | a8083063 | Iustin Pop | |
76 | 47c28c5b | Michael Hanselmann | def __setitem__(self, key, value): |
77 | 47c28c5b | Michael Hanselmann | if key not in self.__slots__: |
78 | 3ecf6786 | Iustin Pop | raise KeyError(key) |
79 | 47c28c5b | Michael Hanselmann | setattr(self, key, value) |
80 | 47c28c5b | Michael Hanselmann | |
81 | a8083063 | Iustin Pop | def __getstate__(self): |
82 | a8083063 | Iustin Pop | state = {} |
83 | a8083063 | Iustin Pop | for name in self.__slots__: |
84 | a8083063 | Iustin Pop | if hasattr(self, name): |
85 | a8083063 | Iustin Pop | state[name] = getattr(self, name) |
86 | a8083063 | Iustin Pop | return state
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87 | a8083063 | Iustin Pop | |
88 | a8083063 | Iustin Pop | def __setstate__(self, state): |
89 | a8083063 | Iustin Pop | for name in state: |
90 | a8083063 | Iustin Pop | if name in self.__slots__: |
91 | a8083063 | Iustin Pop | setattr(self, name, state[name]) |
92 | a8083063 | Iustin Pop | |
93 | a8083063 | Iustin Pop | def Dump(self, fobj): |
94 | 319856a9 | Michael Hanselmann | """Dump to a file object.
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95 | a8083063 | Iustin Pop |
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96 | a8083063 | Iustin Pop | """
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97 | d5835922 | Michael Hanselmann | data = self.ToDict()
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98 | d5835922 | Michael Hanselmann | if _JSON_INDENT is None: |
99 | d5835922 | Michael Hanselmann | simplejson.dump(data, fobj) |
100 | d5835922 | Michael Hanselmann | else:
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101 | d5835922 | Michael Hanselmann | simplejson.dump(data, fobj, indent=_JSON_INDENT) |
102 | a8083063 | Iustin Pop | |
103 | 319856a9 | Michael Hanselmann | @classmethod
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104 | 319856a9 | Michael Hanselmann | def Load(cls, fobj): |
105 | 319856a9 | Michael Hanselmann | """Load data from the given stream.
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106 | a8083063 | Iustin Pop |
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107 | a8083063 | Iustin Pop | """
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108 | 319856a9 | Michael Hanselmann | return cls.FromDict(simplejson.load(fobj))
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109 | a8083063 | Iustin Pop | |
110 | a8083063 | Iustin Pop | def Dumps(self): |
111 | 319856a9 | Michael Hanselmann | """Dump and return the string representation."""
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112 | a8083063 | Iustin Pop | buf = StringIO() |
113 | a8083063 | Iustin Pop | self.Dump(buf)
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114 | a8083063 | Iustin Pop | return buf.getvalue()
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115 | a8083063 | Iustin Pop | |
116 | 319856a9 | Michael Hanselmann | @classmethod
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117 | 319856a9 | Michael Hanselmann | def Loads(cls, data): |
118 | a8083063 | Iustin Pop | """Load data from a string."""
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119 | 319856a9 | Michael Hanselmann | return cls.Load(StringIO(data))
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120 | a8083063 | Iustin Pop | |
121 | ff9c047c | Iustin Pop | def ToDict(self): |
122 | ff9c047c | Iustin Pop | """Convert to a dict holding only standard python types.
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123 | ff9c047c | Iustin Pop |
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124 | ff9c047c | Iustin Pop | The generic routine just dumps all of this object's attributes in
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125 | ff9c047c | Iustin Pop | a dict. It does not work if the class has children who are
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126 | ff9c047c | Iustin Pop | ConfigObjects themselves (e.g. the nics list in an Instance), in
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127 | ff9c047c | Iustin Pop | which case the object should subclass the function in order to
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128 | ff9c047c | Iustin Pop | make sure all objects returned are only standard python types.
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129 | ff9c047c | Iustin Pop |
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130 | ff9c047c | Iustin Pop | """
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131 | ff9c047c | Iustin Pop | return dict([(k, getattr(self, k, None)) for k in self.__slots__]) |
132 | ff9c047c | Iustin Pop | |
133 | ff9c047c | Iustin Pop | @classmethod
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134 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
135 | ff9c047c | Iustin Pop | """Create an object from a dictionary.
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136 | ff9c047c | Iustin Pop |
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137 | ff9c047c | Iustin Pop | This generic routine takes a dict, instantiates a new instance of
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138 | ff9c047c | Iustin Pop | the given class, and sets attributes based on the dict content.
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139 | ff9c047c | Iustin Pop |
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140 | ff9c047c | Iustin Pop | As for `ToDict`, this does not work if the class has children
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141 | ff9c047c | Iustin Pop | who are ConfigObjects themselves (e.g. the nics list in an
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142 | ff9c047c | Iustin Pop | Instance), in which case the object should subclass the function
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143 | ff9c047c | Iustin Pop | and alter the objects.
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144 | ff9c047c | Iustin Pop |
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145 | ff9c047c | Iustin Pop | """
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146 | ff9c047c | Iustin Pop | if not isinstance(val, dict): |
147 | ff9c047c | Iustin Pop | raise errors.ConfigurationError("Invalid object passed to FromDict:" |
148 | ff9c047c | Iustin Pop | " expected dict, got %s" % type(val)) |
149 | 319856a9 | Michael Hanselmann | val_str = dict([(str(k), v) for k, v in val.iteritems()]) |
150 | 319856a9 | Michael Hanselmann | obj = cls(**val_str) |
151 | ff9c047c | Iustin Pop | return obj
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152 | ff9c047c | Iustin Pop | |
153 | ff9c047c | Iustin Pop | @staticmethod
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154 | ff9c047c | Iustin Pop | def _ContainerToDicts(container): |
155 | ff9c047c | Iustin Pop | """Convert the elements of a container to standard python types.
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156 | ff9c047c | Iustin Pop |
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157 | ff9c047c | Iustin Pop | This method converts a container with elements derived from
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158 | ff9c047c | Iustin Pop | ConfigData to standard python types. If the container is a dict,
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159 | ff9c047c | Iustin Pop | we don't touch the keys, only the values.
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160 | ff9c047c | Iustin Pop |
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161 | ff9c047c | Iustin Pop | """
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162 | ff9c047c | Iustin Pop | if isinstance(container, dict): |
163 | ff9c047c | Iustin Pop | ret = dict([(k, v.ToDict()) for k, v in container.iteritems()]) |
164 | ff9c047c | Iustin Pop | elif isinstance(container, (list, tuple, set, frozenset)): |
165 | ff9c047c | Iustin Pop | ret = [elem.ToDict() for elem in container] |
166 | ff9c047c | Iustin Pop | else:
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167 | ff9c047c | Iustin Pop | raise TypeError("Invalid type %s passed to _ContainerToDicts" % |
168 | ff9c047c | Iustin Pop | type(container))
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169 | ff9c047c | Iustin Pop | return ret
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170 | ff9c047c | Iustin Pop | |
171 | ff9c047c | Iustin Pop | @staticmethod
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172 | ff9c047c | Iustin Pop | def _ContainerFromDicts(source, c_type, e_type): |
173 | ff9c047c | Iustin Pop | """Convert a container from standard python types.
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174 | ff9c047c | Iustin Pop |
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175 | ff9c047c | Iustin Pop | This method converts a container with standard python types to
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176 | ff9c047c | Iustin Pop | ConfigData objects. If the container is a dict, we don't touch the
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177 | ff9c047c | Iustin Pop | keys, only the values.
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178 | ff9c047c | Iustin Pop |
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179 | ff9c047c | Iustin Pop | """
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180 | ff9c047c | Iustin Pop | if not isinstance(c_type, type): |
181 | ff9c047c | Iustin Pop | raise TypeError("Container type %s passed to _ContainerFromDicts is" |
182 | ff9c047c | Iustin Pop | " not a type" % type(c_type)) |
183 | ff9c047c | Iustin Pop | if c_type is dict: |
184 | ff9c047c | Iustin Pop | ret = dict([(k, e_type.FromDict(v)) for k, v in source.iteritems()]) |
185 | ff9c047c | Iustin Pop | elif c_type in (list, tuple, set, frozenset): |
186 | ff9c047c | Iustin Pop | ret = c_type([e_type.FromDict(elem) for elem in source]) |
187 | ff9c047c | Iustin Pop | else:
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188 | ff9c047c | Iustin Pop | raise TypeError("Invalid container type %s passed to" |
189 | ff9c047c | Iustin Pop | " _ContainerFromDicts" % c_type)
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190 | ff9c047c | Iustin Pop | return ret
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191 | ff9c047c | Iustin Pop | |
192 | ff9c047c | Iustin Pop | def __repr__(self): |
193 | ff9c047c | Iustin Pop | """Implement __repr__ for ConfigObjects."""
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194 | ff9c047c | Iustin Pop | return repr(self.ToDict()) |
195 | ff9c047c | Iustin Pop | |
196 | a8083063 | Iustin Pop | |
197 | ec29fe40 | Iustin Pop | class TaggableObject(ConfigObject): |
198 | 5c947f38 | Iustin Pop | """An generic class supporting tags.
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199 | 5c947f38 | Iustin Pop |
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200 | 5c947f38 | Iustin Pop | """
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201 | ec29fe40 | Iustin Pop | __slots__ = ConfigObject.__slots__ + ["tags"]
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202 | 2057f6c7 | Iustin Pop | |
203 | 5c947f38 | Iustin Pop | @staticmethod
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204 | 5c947f38 | Iustin Pop | def ValidateTag(tag): |
205 | 5c947f38 | Iustin Pop | """Check if a tag is valid.
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206 | 5c947f38 | Iustin Pop |
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207 | 5c947f38 | Iustin Pop | If the tag is invalid, an errors.TagError will be raised. The
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208 | 5c947f38 | Iustin Pop | function has no return value.
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209 | 5c947f38 | Iustin Pop |
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210 | 5c947f38 | Iustin Pop | """
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211 | 5c947f38 | Iustin Pop | if not isinstance(tag, basestring): |
212 | 3ecf6786 | Iustin Pop | raise errors.TagError("Invalid tag type (not a string)") |
213 | 5c947f38 | Iustin Pop | if len(tag) > constants.MAX_TAG_LEN: |
214 | 319856a9 | Michael Hanselmann | raise errors.TagError("Tag too long (>%d characters)" % |
215 | 319856a9 | Michael Hanselmann | constants.MAX_TAG_LEN) |
216 | 5c947f38 | Iustin Pop | if not tag: |
217 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tags cannot be empty") |
218 | 5c947f38 | Iustin Pop | if not re.match("^[ \w.+*/:-]+$", tag): |
219 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tag contains invalid characters") |
220 | 5c947f38 | Iustin Pop | |
221 | 5c947f38 | Iustin Pop | def GetTags(self): |
222 | 5c947f38 | Iustin Pop | """Return the tags list.
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223 | 5c947f38 | Iustin Pop |
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224 | 5c947f38 | Iustin Pop | """
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225 | 5c947f38 | Iustin Pop | tags = getattr(self, "tags", None) |
226 | 5c947f38 | Iustin Pop | if tags is None: |
227 | 5c947f38 | Iustin Pop | tags = self.tags = set() |
228 | 5c947f38 | Iustin Pop | return tags
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229 | 5c947f38 | Iustin Pop | |
230 | 5c947f38 | Iustin Pop | def AddTag(self, tag): |
231 | 5c947f38 | Iustin Pop | """Add a new tag.
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232 | 5c947f38 | Iustin Pop |
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233 | 5c947f38 | Iustin Pop | """
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234 | 5c947f38 | Iustin Pop | self.ValidateTag(tag)
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235 | 5c947f38 | Iustin Pop | tags = self.GetTags()
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236 | 5c947f38 | Iustin Pop | if len(tags) >= constants.MAX_TAGS_PER_OBJ: |
237 | 3ecf6786 | Iustin Pop | raise errors.TagError("Too many tags") |
238 | 5c947f38 | Iustin Pop | self.GetTags().add(tag)
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239 | 5c947f38 | Iustin Pop | |
240 | 5c947f38 | Iustin Pop | def RemoveTag(self, tag): |
241 | 5c947f38 | Iustin Pop | """Remove a tag.
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242 | 5c947f38 | Iustin Pop |
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243 | 5c947f38 | Iustin Pop | """
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244 | 5c947f38 | Iustin Pop | self.ValidateTag(tag)
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245 | 5c947f38 | Iustin Pop | tags = self.GetTags()
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246 | 5c947f38 | Iustin Pop | try:
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247 | 5c947f38 | Iustin Pop | tags.remove(tag) |
248 | 5c947f38 | Iustin Pop | except KeyError: |
249 | 3ecf6786 | Iustin Pop | raise errors.TagError("Tag not found") |
250 | 5c947f38 | Iustin Pop | |
251 | ff9c047c | Iustin Pop | def ToDict(self): |
252 | ff9c047c | Iustin Pop | """Taggable-object-specific conversion to standard python types.
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253 | ff9c047c | Iustin Pop |
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254 | ff9c047c | Iustin Pop | This replaces the tags set with a list.
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255 | ff9c047c | Iustin Pop |
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256 | ff9c047c | Iustin Pop | """
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257 | ff9c047c | Iustin Pop | bo = super(TaggableObject, self).ToDict() |
258 | ff9c047c | Iustin Pop | |
259 | ff9c047c | Iustin Pop | tags = bo.get("tags", None) |
260 | ff9c047c | Iustin Pop | if isinstance(tags, set): |
261 | ff9c047c | Iustin Pop | bo["tags"] = list(tags) |
262 | ff9c047c | Iustin Pop | return bo
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263 | ff9c047c | Iustin Pop | |
264 | ff9c047c | Iustin Pop | @classmethod
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265 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
266 | ff9c047c | Iustin Pop | """Custom function for instances.
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267 | ff9c047c | Iustin Pop |
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268 | ff9c047c | Iustin Pop | """
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269 | ff9c047c | Iustin Pop | obj = super(TaggableObject, cls).FromDict(val)
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270 | ff9c047c | Iustin Pop | if hasattr(obj, "tags") and isinstance(obj.tags, list): |
271 | ff9c047c | Iustin Pop | obj.tags = set(obj.tags)
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272 | ff9c047c | Iustin Pop | return obj
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273 | ff9c047c | Iustin Pop | |
274 | 5c947f38 | Iustin Pop | |
275 | a8083063 | Iustin Pop | class ConfigData(ConfigObject): |
276 | a8083063 | Iustin Pop | """Top-level config object."""
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277 | b2fddf63 | Iustin Pop | __slots__ = ["cluster", "nodes", "instances"] |
278 | a8083063 | Iustin Pop | |
279 | ff9c047c | Iustin Pop | def ToDict(self): |
280 | ff9c047c | Iustin Pop | """Custom function for top-level config data.
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281 | ff9c047c | Iustin Pop |
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282 | ff9c047c | Iustin Pop | This just replaces the list of instances, nodes and the cluster
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283 | ff9c047c | Iustin Pop | with standard python types.
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284 | ff9c047c | Iustin Pop |
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285 | ff9c047c | Iustin Pop | """
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286 | ff9c047c | Iustin Pop | mydict = super(ConfigData, self).ToDict() |
287 | ff9c047c | Iustin Pop | mydict["cluster"] = mydict["cluster"].ToDict() |
288 | ff9c047c | Iustin Pop | for key in "nodes", "instances": |
289 | ff9c047c | Iustin Pop | mydict[key] = self._ContainerToDicts(mydict[key])
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290 | ff9c047c | Iustin Pop | |
291 | ff9c047c | Iustin Pop | return mydict
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292 | ff9c047c | Iustin Pop | |
293 | ff9c047c | Iustin Pop | @classmethod
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294 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
295 | ff9c047c | Iustin Pop | """Custom function for top-level config data
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296 | ff9c047c | Iustin Pop |
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297 | ff9c047c | Iustin Pop | """
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298 | ff9c047c | Iustin Pop | obj = super(ConfigData, cls).FromDict(val)
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299 | ff9c047c | Iustin Pop | obj.cluster = Cluster.FromDict(obj.cluster) |
300 | ff9c047c | Iustin Pop | obj.nodes = cls._ContainerFromDicts(obj.nodes, dict, Node)
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301 | ff9c047c | Iustin Pop | obj.instances = cls._ContainerFromDicts(obj.instances, dict, Instance)
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302 | ff9c047c | Iustin Pop | return obj
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303 | ff9c047c | Iustin Pop | |
304 | a8083063 | Iustin Pop | |
305 | a8083063 | Iustin Pop | class NIC(ConfigObject): |
306 | a8083063 | Iustin Pop | """Config object representing a network card."""
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307 | a8083063 | Iustin Pop | __slots__ = ["mac", "ip", "bridge"] |
308 | a8083063 | Iustin Pop | |
309 | a8083063 | Iustin Pop | |
310 | a8083063 | Iustin Pop | class Disk(ConfigObject): |
311 | a8083063 | Iustin Pop | """Config object representing a block device."""
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312 | a8083063 | Iustin Pop | __slots__ = ["dev_type", "logical_id", "physical_id", |
313 | a8083063 | Iustin Pop | "children", "iv_name", "size"] |
314 | a8083063 | Iustin Pop | |
315 | a8083063 | Iustin Pop | def CreateOnSecondary(self): |
316 | a8083063 | Iustin Pop | """Test if this device needs to be created on a secondary node."""
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317 | a1f445d3 | Iustin Pop | return self.dev_type in (constants.LD_DRBD7, constants.LD_DRBD8, |
318 | a1f445d3 | Iustin Pop | constants.LD_LV) |
319 | a8083063 | Iustin Pop | |
320 | a8083063 | Iustin Pop | def AssembleOnSecondary(self): |
321 | a8083063 | Iustin Pop | """Test if this device needs to be assembled on a secondary node."""
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322 | a1f445d3 | Iustin Pop | return self.dev_type in (constants.LD_DRBD7, constants.LD_DRBD8, |
323 | a1f445d3 | Iustin Pop | constants.LD_LV) |
324 | a8083063 | Iustin Pop | |
325 | a8083063 | Iustin Pop | def OpenOnSecondary(self): |
326 | a8083063 | Iustin Pop | """Test if this device needs to be opened on a secondary node."""
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327 | fe96220b | Iustin Pop | return self.dev_type in (constants.LD_LV,) |
328 | a8083063 | Iustin Pop | |
329 | 222f2dd5 | Iustin Pop | def StaticDevPath(self): |
330 | 222f2dd5 | Iustin Pop | """Return the device path if this device type has a static one.
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331 | 222f2dd5 | Iustin Pop |
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332 | 222f2dd5 | Iustin Pop | Some devices (LVM for example) live always at the same /dev/ path,
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333 | 222f2dd5 | Iustin Pop | irrespective of their status. For such devices, we return this
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334 | 222f2dd5 | Iustin Pop | path, for others we return None.
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335 | 222f2dd5 | Iustin Pop |
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336 | 222f2dd5 | Iustin Pop | """
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337 | 222f2dd5 | Iustin Pop | if self.dev_type == constants.LD_LV: |
338 | 222f2dd5 | Iustin Pop | return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1]) |
339 | 222f2dd5 | Iustin Pop | return None |
340 | 222f2dd5 | Iustin Pop | |
341 | fc1dc9d7 | Iustin Pop | def ChildrenNeeded(self): |
342 | fc1dc9d7 | Iustin Pop | """Compute the needed number of children for activation.
|
343 | fc1dc9d7 | Iustin Pop |
|
344 | fc1dc9d7 | Iustin Pop | This method will return either -1 (all children) or a positive
|
345 | fc1dc9d7 | Iustin Pop | number denoting the minimum number of children needed for
|
346 | fc1dc9d7 | Iustin Pop | activation (only mirrored devices will usually return >=0).
|
347 | fc1dc9d7 | Iustin Pop |
|
348 | fc1dc9d7 | Iustin Pop | Currently, only DRBD8 supports diskless activation (therefore we
|
349 | fc1dc9d7 | Iustin Pop | return 0), for all other we keep the previous semantics and return
|
350 | fc1dc9d7 | Iustin Pop | -1.
|
351 | fc1dc9d7 | Iustin Pop |
|
352 | fc1dc9d7 | Iustin Pop | """
|
353 | fc1dc9d7 | Iustin Pop | if self.dev_type == constants.LD_DRBD8: |
354 | fc1dc9d7 | Iustin Pop | return 0 |
355 | fc1dc9d7 | Iustin Pop | return -1 |
356 | fc1dc9d7 | Iustin Pop | |
357 | a8083063 | Iustin Pop | def GetNodes(self, node): |
358 | a8083063 | Iustin Pop | """This function returns the nodes this device lives on.
|
359 | a8083063 | Iustin Pop |
|
360 | a8083063 | Iustin Pop | Given the node on which the parent of the device lives on (or, in
|
361 | a8083063 | Iustin Pop | case of a top-level device, the primary node of the devices'
|
362 | a8083063 | Iustin Pop | instance), this function will return a list of nodes on which this
|
363 | a8083063 | Iustin Pop | devices needs to (or can) be assembled.
|
364 | a8083063 | Iustin Pop |
|
365 | a8083063 | Iustin Pop | """
|
366 | fe96220b | Iustin Pop | if self.dev_type == constants.LD_LV or self.dev_type == constants.LD_MD_R1: |
367 | a8083063 | Iustin Pop | result = [node] |
368 | a1f445d3 | Iustin Pop | elif self.dev_type in constants.LDS_DRBD: |
369 | a8083063 | Iustin Pop | result = [self.logical_id[0], self.logical_id[1]] |
370 | a8083063 | Iustin Pop | if node not in result: |
371 | 3ecf6786 | Iustin Pop | raise errors.ConfigurationError("DRBD device passed unknown node") |
372 | a8083063 | Iustin Pop | else:
|
373 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Unhandled device type %s" % self.dev_type) |
374 | a8083063 | Iustin Pop | return result
|
375 | a8083063 | Iustin Pop | |
376 | a8083063 | Iustin Pop | def ComputeNodeTree(self, parent_node): |
377 | a8083063 | Iustin Pop | """Compute the node/disk tree for this disk and its children.
|
378 | a8083063 | Iustin Pop |
|
379 | a8083063 | Iustin Pop | This method, given the node on which the parent disk lives, will
|
380 | a8083063 | Iustin Pop | return the list of all (node, disk) pairs which describe the disk
|
381 | a8083063 | Iustin Pop | tree in the most compact way. For example, a md/drbd/lvm stack
|
382 | a8083063 | Iustin Pop | will be returned as (primary_node, md) and (secondary_node, drbd)
|
383 | a8083063 | Iustin Pop | which represents all the top-level devices on the nodes. This
|
384 | a8083063 | Iustin Pop | means that on the primary node we need to activate the the md (and
|
385 | a8083063 | Iustin Pop | recursively all its children) and on the secondary node we need to
|
386 | a8083063 | Iustin Pop | activate the drbd device (and its children, the two lvm volumes).
|
387 | a8083063 | Iustin Pop |
|
388 | a8083063 | Iustin Pop | """
|
389 | a8083063 | Iustin Pop | my_nodes = self.GetNodes(parent_node)
|
390 | a8083063 | Iustin Pop | result = [(node, self) for node in my_nodes] |
391 | a8083063 | Iustin Pop | if not self.children: |
392 | a8083063 | Iustin Pop | # leaf device
|
393 | a8083063 | Iustin Pop | return result
|
394 | a8083063 | Iustin Pop | for node in my_nodes: |
395 | a8083063 | Iustin Pop | for child in self.children: |
396 | a8083063 | Iustin Pop | child_result = child.ComputeNodeTree(node) |
397 | a8083063 | Iustin Pop | if len(child_result) == 1: |
398 | a8083063 | Iustin Pop | # child (and all its descendants) is simple, doesn't split
|
399 | a8083063 | Iustin Pop | # over multiple hosts, so we don't need to describe it, our
|
400 | a8083063 | Iustin Pop | # own entry for this node describes it completely
|
401 | a8083063 | Iustin Pop | continue
|
402 | a8083063 | Iustin Pop | else:
|
403 | a8083063 | Iustin Pop | # check if child nodes differ from my nodes; note that
|
404 | a8083063 | Iustin Pop | # subdisk can differ from the child itself, and be instead
|
405 | a8083063 | Iustin Pop | # one of its descendants
|
406 | a8083063 | Iustin Pop | for subnode, subdisk in child_result: |
407 | a8083063 | Iustin Pop | if subnode not in my_nodes: |
408 | a8083063 | Iustin Pop | result.append((subnode, subdisk)) |
409 | a8083063 | Iustin Pop | # otherwise child is under our own node, so we ignore this
|
410 | a8083063 | Iustin Pop | # entry (but probably the other results in the list will
|
411 | a8083063 | Iustin Pop | # be different)
|
412 | a8083063 | Iustin Pop | return result
|
413 | a8083063 | Iustin Pop | |
414 | ff9c047c | Iustin Pop | def ToDict(self): |
415 | ff9c047c | Iustin Pop | """Disk-specific conversion to standard python types.
|
416 | ff9c047c | Iustin Pop |
|
417 | ff9c047c | Iustin Pop | This replaces the children lists of objects with lists of
|
418 | ff9c047c | Iustin Pop | standard python types.
|
419 | ff9c047c | Iustin Pop |
|
420 | ff9c047c | Iustin Pop | """
|
421 | ff9c047c | Iustin Pop | bo = super(Disk, self).ToDict() |
422 | ff9c047c | Iustin Pop | |
423 | ff9c047c | Iustin Pop | for attr in ("children",): |
424 | ff9c047c | Iustin Pop | alist = bo.get(attr, None)
|
425 | ff9c047c | Iustin Pop | if alist:
|
426 | ff9c047c | Iustin Pop | bo[attr] = self._ContainerToDicts(alist)
|
427 | ff9c047c | Iustin Pop | return bo
|
428 | ff9c047c | Iustin Pop | |
429 | ff9c047c | Iustin Pop | @classmethod
|
430 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
431 | ff9c047c | Iustin Pop | """Custom function for Disks
|
432 | ff9c047c | Iustin Pop |
|
433 | ff9c047c | Iustin Pop | """
|
434 | ff9c047c | Iustin Pop | obj = super(Disk, cls).FromDict(val)
|
435 | ff9c047c | Iustin Pop | if obj.children:
|
436 | ff9c047c | Iustin Pop | obj.children = cls._ContainerFromDicts(obj.children, list, Disk)
|
437 | ff9c047c | Iustin Pop | if obj.logical_id and isinstance(obj.logical_id, list): |
438 | ff9c047c | Iustin Pop | obj.logical_id = tuple(obj.logical_id)
|
439 | ff9c047c | Iustin Pop | if obj.physical_id and isinstance(obj.physical_id, list): |
440 | ff9c047c | Iustin Pop | obj.physical_id = tuple(obj.physical_id)
|
441 | ff9c047c | Iustin Pop | return obj
|
442 | ff9c047c | Iustin Pop | |
443 | 65a15336 | Iustin Pop | def __str__(self): |
444 | 65a15336 | Iustin Pop | """Custom str() formatter for disks.
|
445 | 65a15336 | Iustin Pop |
|
446 | 65a15336 | Iustin Pop | """
|
447 | 65a15336 | Iustin Pop | if self.dev_type == constants.LD_LV: |
448 | 65a15336 | Iustin Pop | val = "<LogicalVolume(/dev/%s/%s" % self.logical_id |
449 | 65a15336 | Iustin Pop | elif self.dev_type in constants.LDS_DRBD: |
450 | 65a15336 | Iustin Pop | if self.dev_type == constants.LD_DRBD7: |
451 | 65a15336 | Iustin Pop | val = "<DRBD7("
|
452 | 65a15336 | Iustin Pop | else:
|
453 | 65a15336 | Iustin Pop | val = "<DRBD8("
|
454 | 073ca59e | Iustin Pop | if self.physical_id is None: |
455 | 073ca59e | Iustin Pop | phy = "unconfigured"
|
456 | 073ca59e | Iustin Pop | else:
|
457 | 073ca59e | Iustin Pop | phy = ("configured as %s:%s %s:%s" %
|
458 | 25a915d0 | Iustin Pop | (self.physical_id[0], self.physical_id[1], |
459 | 25a915d0 | Iustin Pop | self.physical_id[2], self.physical_id[3])) |
460 | 073ca59e | Iustin Pop | |
461 | 073ca59e | Iustin Pop | val += ("hosts=%s-%s, port=%s, %s, " %
|
462 | 073ca59e | Iustin Pop | (self.logical_id[0], self.logical_id[1], self.logical_id[2], |
463 | 073ca59e | Iustin Pop | phy)) |
464 | 65a15336 | Iustin Pop | if self.children and self.children.count(None) == 0: |
465 | 65a15336 | Iustin Pop | val += "backend=%s, metadev=%s" % (self.children[0], self.children[1]) |
466 | 65a15336 | Iustin Pop | else:
|
467 | 65a15336 | Iustin Pop | val += "no local storage"
|
468 | 65a15336 | Iustin Pop | elif self.dev_type == constants.LD_MD_R1: |
469 | 65a15336 | Iustin Pop | val = "<MD_R1(uuid=%s, children=%s" % (self.physical_id, self.children) |
470 | 65a15336 | Iustin Pop | else:
|
471 | 65a15336 | Iustin Pop | val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
|
472 | 65a15336 | Iustin Pop | (self.dev_type, self.logical_id, self.physical_id, self.children)) |
473 | 65a15336 | Iustin Pop | if self.iv_name is None: |
474 | 65a15336 | Iustin Pop | val += ", not visible"
|
475 | 65a15336 | Iustin Pop | else:
|
476 | 65a15336 | Iustin Pop | val += ", visible as /dev/%s" % self.iv_name |
477 | 65a15336 | Iustin Pop | val += ", size=%dm)>" % self.size |
478 | 65a15336 | Iustin Pop | return val
|
479 | 65a15336 | Iustin Pop | |
480 | a8083063 | Iustin Pop | |
481 | ec29fe40 | Iustin Pop | class Instance(TaggableObject): |
482 | a8083063 | Iustin Pop | """Config object representing an instance."""
|
483 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
484 | a8083063 | Iustin Pop | "name",
|
485 | a8083063 | Iustin Pop | "primary_node",
|
486 | a8083063 | Iustin Pop | "os",
|
487 | a8083063 | Iustin Pop | "status",
|
488 | a8083063 | Iustin Pop | "memory",
|
489 | a8083063 | Iustin Pop | "vcpus",
|
490 | a8083063 | Iustin Pop | "nics",
|
491 | a8083063 | Iustin Pop | "disks",
|
492 | a8083063 | Iustin Pop | "disk_template",
|
493 | 58acb49d | Alexander Schreiber | "network_port",
|
494 | 2d8c9c2e | Iustin Pop | "kernel_path",
|
495 | 2d8c9c2e | Iustin Pop | "initrd_path",
|
496 | 0d9c53bc | Alexander Schreiber | "hvm_boot_order",
|
497 | a8083063 | Iustin Pop | ] |
498 | a8083063 | Iustin Pop | |
499 | a8083063 | Iustin Pop | def _ComputeSecondaryNodes(self): |
500 | a8083063 | Iustin Pop | """Compute the list of secondary nodes.
|
501 | a8083063 | Iustin Pop |
|
502 | a8083063 | Iustin Pop | Since the data is already there (in the drbd disks), keeping it as
|
503 | a8083063 | Iustin Pop | a separate normal attribute is redundant and if not properly
|
504 | a8083063 | Iustin Pop | synchronised can cause problems. Thus it's better to compute it
|
505 | a8083063 | Iustin Pop | dynamically.
|
506 | a8083063 | Iustin Pop |
|
507 | a8083063 | Iustin Pop | """
|
508 | a8083063 | Iustin Pop | def _Helper(primary, sec_nodes, device): |
509 | a8083063 | Iustin Pop | """Recursively computes secondary nodes given a top device."""
|
510 | a1f445d3 | Iustin Pop | if device.dev_type in constants.LDS_DRBD: |
511 | a8083063 | Iustin Pop | nodea, nodeb, dummy = device.logical_id |
512 | a8083063 | Iustin Pop | if nodea == primary:
|
513 | a8083063 | Iustin Pop | candidate = nodeb |
514 | a8083063 | Iustin Pop | else:
|
515 | a8083063 | Iustin Pop | candidate = nodea |
516 | a8083063 | Iustin Pop | if candidate not in sec_nodes: |
517 | a8083063 | Iustin Pop | sec_nodes.append(candidate) |
518 | a8083063 | Iustin Pop | if device.children:
|
519 | a8083063 | Iustin Pop | for child in device.children: |
520 | a8083063 | Iustin Pop | _Helper(primary, sec_nodes, child) |
521 | a8083063 | Iustin Pop | |
522 | a8083063 | Iustin Pop | secondary_nodes = [] |
523 | a8083063 | Iustin Pop | for device in self.disks: |
524 | a8083063 | Iustin Pop | _Helper(self.primary_node, secondary_nodes, device)
|
525 | a8083063 | Iustin Pop | return tuple(secondary_nodes) |
526 | a8083063 | Iustin Pop | |
527 | a8083063 | Iustin Pop | secondary_nodes = property(_ComputeSecondaryNodes, None, None, |
528 | a8083063 | Iustin Pop | "List of secondary nodes")
|
529 | a8083063 | Iustin Pop | |
530 | a8083063 | Iustin Pop | def MapLVsByNode(self, lvmap=None, devs=None, node=None): |
531 | a8083063 | Iustin Pop | """Provide a mapping of nodes to LVs this instance owns.
|
532 | a8083063 | Iustin Pop |
|
533 | a8083063 | Iustin Pop | This function figures out what logical volumes should belong on which
|
534 | a8083063 | Iustin Pop | nodes, recursing through a device tree.
|
535 | a8083063 | Iustin Pop |
|
536 | a8083063 | Iustin Pop | Args:
|
537 | a8083063 | Iustin Pop | lvmap: (optional) a dictionary to receive the 'node' : ['lv', ...] data.
|
538 | a8083063 | Iustin Pop |
|
539 | a8083063 | Iustin Pop | Returns:
|
540 | a8083063 | Iustin Pop | None if lvmap arg is given.
|
541 | a8083063 | Iustin Pop | Otherwise, { 'nodename' : ['volume1', 'volume2', ...], ... }
|
542 | a8083063 | Iustin Pop |
|
543 | a8083063 | Iustin Pop | """
|
544 | a8083063 | Iustin Pop | if node == None: |
545 | a8083063 | Iustin Pop | node = self.primary_node
|
546 | a8083063 | Iustin Pop | |
547 | a8083063 | Iustin Pop | if lvmap is None: |
548 | a8083063 | Iustin Pop | lvmap = { node : [] } |
549 | a8083063 | Iustin Pop | ret = lvmap |
550 | a8083063 | Iustin Pop | else:
|
551 | a8083063 | Iustin Pop | if not node in lvmap: |
552 | a8083063 | Iustin Pop | lvmap[node] = [] |
553 | a8083063 | Iustin Pop | ret = None
|
554 | a8083063 | Iustin Pop | |
555 | a8083063 | Iustin Pop | if not devs: |
556 | a8083063 | Iustin Pop | devs = self.disks
|
557 | a8083063 | Iustin Pop | |
558 | a8083063 | Iustin Pop | for dev in devs: |
559 | fe96220b | Iustin Pop | if dev.dev_type == constants.LD_LV:
|
560 | a8083063 | Iustin Pop | lvmap[node].append(dev.logical_id[1])
|
561 | a8083063 | Iustin Pop | |
562 | a1f445d3 | Iustin Pop | elif dev.dev_type in constants.LDS_DRBD: |
563 | a8083063 | Iustin Pop | if dev.logical_id[0] not in lvmap: |
564 | a8083063 | Iustin Pop | lvmap[dev.logical_id[0]] = []
|
565 | a8083063 | Iustin Pop | |
566 | a8083063 | Iustin Pop | if dev.logical_id[1] not in lvmap: |
567 | a8083063 | Iustin Pop | lvmap[dev.logical_id[1]] = []
|
568 | a8083063 | Iustin Pop | |
569 | a8083063 | Iustin Pop | if dev.children:
|
570 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, dev.logical_id[0]) |
571 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, dev.logical_id[1]) |
572 | a8083063 | Iustin Pop | |
573 | a8083063 | Iustin Pop | elif dev.children:
|
574 | a8083063 | Iustin Pop | self.MapLVsByNode(lvmap, dev.children, node)
|
575 | a8083063 | Iustin Pop | |
576 | a8083063 | Iustin Pop | return ret
|
577 | a8083063 | Iustin Pop | |
578 | 644eeef9 | Iustin Pop | def FindDisk(self, name): |
579 | 644eeef9 | Iustin Pop | """Find a disk given having a specified name.
|
580 | 644eeef9 | Iustin Pop |
|
581 | 644eeef9 | Iustin Pop | This will return the disk which has the given iv_name.
|
582 | 644eeef9 | Iustin Pop |
|
583 | 644eeef9 | Iustin Pop | """
|
584 | 644eeef9 | Iustin Pop | for disk in self.disks: |
585 | 644eeef9 | Iustin Pop | if disk.iv_name == name:
|
586 | 644eeef9 | Iustin Pop | return disk
|
587 | 644eeef9 | Iustin Pop | |
588 | 644eeef9 | Iustin Pop | return None |
589 | 644eeef9 | Iustin Pop | |
590 | ff9c047c | Iustin Pop | def ToDict(self): |
591 | ff9c047c | Iustin Pop | """Instance-specific conversion to standard python types.
|
592 | ff9c047c | Iustin Pop |
|
593 | ff9c047c | Iustin Pop | This replaces the children lists of objects with lists of standard
|
594 | ff9c047c | Iustin Pop | python types.
|
595 | ff9c047c | Iustin Pop |
|
596 | ff9c047c | Iustin Pop | """
|
597 | ff9c047c | Iustin Pop | bo = super(Instance, self).ToDict() |
598 | ff9c047c | Iustin Pop | |
599 | ff9c047c | Iustin Pop | for attr in "nics", "disks": |
600 | ff9c047c | Iustin Pop | alist = bo.get(attr, None)
|
601 | ff9c047c | Iustin Pop | if alist:
|
602 | ff9c047c | Iustin Pop | nlist = self._ContainerToDicts(alist)
|
603 | ff9c047c | Iustin Pop | else:
|
604 | ff9c047c | Iustin Pop | nlist = [] |
605 | ff9c047c | Iustin Pop | bo[attr] = nlist |
606 | ff9c047c | Iustin Pop | return bo
|
607 | ff9c047c | Iustin Pop | |
608 | ff9c047c | Iustin Pop | @classmethod
|
609 | ff9c047c | Iustin Pop | def FromDict(cls, val): |
610 | ff9c047c | Iustin Pop | """Custom function for instances.
|
611 | ff9c047c | Iustin Pop |
|
612 | ff9c047c | Iustin Pop | """
|
613 | ff9c047c | Iustin Pop | obj = super(Instance, cls).FromDict(val)
|
614 | ff9c047c | Iustin Pop | obj.nics = cls._ContainerFromDicts(obj.nics, list, NIC)
|
615 | ff9c047c | Iustin Pop | obj.disks = cls._ContainerFromDicts(obj.disks, list, Disk)
|
616 | ff9c047c | Iustin Pop | return obj
|
617 | ff9c047c | Iustin Pop | |
618 | a8083063 | Iustin Pop | |
619 | a8083063 | Iustin Pop | class OS(ConfigObject): |
620 | a8083063 | Iustin Pop | """Config object representing an operating system."""
|
621 | a8083063 | Iustin Pop | __slots__ = [ |
622 | a8083063 | Iustin Pop | "name",
|
623 | a8083063 | Iustin Pop | "path",
|
624 | 37482e7b | Guido Trotter | "status",
|
625 | a8083063 | Iustin Pop | "api_version",
|
626 | a8083063 | Iustin Pop | "create_script",
|
627 | a8083063 | Iustin Pop | "export_script",
|
628 | 386b57af | Iustin Pop | "import_script",
|
629 | 386b57af | Iustin Pop | "rename_script",
|
630 | a8083063 | Iustin Pop | ] |
631 | a8083063 | Iustin Pop | |
632 | d2c807e4 | Guido Trotter | @classmethod
|
633 | d2c807e4 | Guido Trotter | def FromInvalidOS(cls, err): |
634 | d2c807e4 | Guido Trotter | """Create an OS from an InvalidOS error.
|
635 | d2c807e4 | Guido Trotter |
|
636 | d2c807e4 | Guido Trotter | This routine knows how to convert an InvalidOS error to an OS
|
637 | d2c807e4 | Guido Trotter | object representing the broken OS with a meaningful error message.
|
638 | d2c807e4 | Guido Trotter |
|
639 | d2c807e4 | Guido Trotter | """
|
640 | d2c807e4 | Guido Trotter | if not isinstance(err, errors.InvalidOS): |
641 | d2c807e4 | Guido Trotter | raise errors.ProgrammerError("Trying to initialize an OS from an" |
642 | d2c807e4 | Guido Trotter | " invalid object of type %s" % type(err)) |
643 | d2c807e4 | Guido Trotter | |
644 | d2c807e4 | Guido Trotter | return cls(name=err.args[0], path=err.args[1], status=err.args[2]) |
645 | d2c807e4 | Guido Trotter | |
646 | 37482e7b | Guido Trotter | def __nonzero__(self): |
647 | 37482e7b | Guido Trotter | return self.status == constants.OS_VALID_STATUS |
648 | 37482e7b | Guido Trotter | |
649 | 37482e7b | Guido Trotter | __bool__ = __nonzero__ |
650 | a8083063 | Iustin Pop | |
651 | ec29fe40 | Iustin Pop | class Node(TaggableObject): |
652 | a8083063 | Iustin Pop | """Config object representing a node."""
|
653 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
654 | ec29fe40 | Iustin Pop | "name",
|
655 | ec29fe40 | Iustin Pop | "primary_ip",
|
656 | ec29fe40 | Iustin Pop | "secondary_ip",
|
657 | ec29fe40 | Iustin Pop | ] |
658 | a8083063 | Iustin Pop | |
659 | a8083063 | Iustin Pop | |
660 | ec29fe40 | Iustin Pop | class Cluster(TaggableObject): |
661 | a8083063 | Iustin Pop | """Config object representing the cluster."""
|
662 | ec29fe40 | Iustin Pop | __slots__ = TaggableObject.__slots__ + [ |
663 | a8083063 | Iustin Pop | "config_version",
|
664 | a8083063 | Iustin Pop | "serial_no",
|
665 | a8083063 | Iustin Pop | "rsahostkeypub",
|
666 | a8083063 | Iustin Pop | "highest_used_port",
|
667 | b2fddf63 | Iustin Pop | "tcpudp_port_pool",
|
668 | a8083063 | Iustin Pop | "mac_prefix",
|
669 | a8083063 | Iustin Pop | "volume_group_name",
|
670 | a8083063 | Iustin Pop | "default_bridge",
|
671 | a8083063 | Iustin Pop | ] |
672 | a8083063 | Iustin Pop | |
673 | 319856a9 | Michael Hanselmann | def ToDict(self): |
674 | 319856a9 | Michael Hanselmann | """Custom function for cluster.
|
675 | 319856a9 | Michael Hanselmann |
|
676 | 319856a9 | Michael Hanselmann | """
|
677 | b60ae2ca | Iustin Pop | mydict = super(Cluster, self).ToDict() |
678 | 319856a9 | Michael Hanselmann | mydict["tcpudp_port_pool"] = list(self.tcpudp_port_pool) |
679 | 319856a9 | Michael Hanselmann | return mydict
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680 | 319856a9 | Michael Hanselmann | |
681 | 319856a9 | Michael Hanselmann | @classmethod
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682 | 319856a9 | Michael Hanselmann | def FromDict(cls, val): |
683 | 319856a9 | Michael Hanselmann | """Custom function for cluster.
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684 | 319856a9 | Michael Hanselmann |
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685 | 319856a9 | Michael Hanselmann | """
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686 | b60ae2ca | Iustin Pop | obj = super(Cluster, cls).FromDict(val)
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687 | 319856a9 | Michael Hanselmann | if not isinstance(obj.tcpudp_port_pool, set): |
688 | 319856a9 | Michael Hanselmann | obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
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689 | 319856a9 | Michael Hanselmann | return obj
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690 | 319856a9 | Michael Hanselmann | |
691 | 5c947f38 | Iustin Pop | |
692 | a8083063 | Iustin Pop | class SerializableConfigParser(ConfigParser.SafeConfigParser): |
693 | a8083063 | Iustin Pop | """Simple wrapper over ConfigParse that allows serialization.
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694 | a8083063 | Iustin Pop |
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695 | a8083063 | Iustin Pop | This class is basically ConfigParser.SafeConfigParser with two
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696 | a8083063 | Iustin Pop | additional methods that allow it to serialize/unserialize to/from a
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697 | a8083063 | Iustin Pop | buffer.
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698 | a8083063 | Iustin Pop |
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699 | a8083063 | Iustin Pop | """
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700 | a8083063 | Iustin Pop | def Dumps(self): |
701 | a8083063 | Iustin Pop | """Dump this instance and return the string representation."""
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702 | a8083063 | Iustin Pop | buf = StringIO() |
703 | a8083063 | Iustin Pop | self.write(buf)
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704 | a8083063 | Iustin Pop | return buf.getvalue()
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705 | a8083063 | Iustin Pop | |
706 | a8083063 | Iustin Pop | @staticmethod
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707 | a8083063 | Iustin Pop | def Loads(data): |
708 | a8083063 | Iustin Pop | """Load data from a string."""
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709 | a8083063 | Iustin Pop | buf = StringIO(data) |
710 | a8083063 | Iustin Pop | cfp = SerializableConfigParser() |
711 | a8083063 | Iustin Pop | cfp.readfp(buf) |
712 | a8083063 | Iustin Pop | return cfp |