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