root / lib / rapi / baserlib.py @ 6c881c52
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1 | c2dca9af | Oleksiy Mishchenko | #
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2 | c2dca9af | Oleksiy Mishchenko | #
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3 | c2dca9af | Oleksiy Mishchenko | |
4 | c2dca9af | Oleksiy Mishchenko | # Copyright (C) 2006, 2007, 2008 Google Inc.
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5 | c2dca9af | Oleksiy Mishchenko | #
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6 | c2dca9af | Oleksiy Mishchenko | # This program is free software; you can redistribute it and/or modify
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7 | c2dca9af | Oleksiy Mishchenko | # it under the terms of the GNU General Public License as published by
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8 | c2dca9af | Oleksiy Mishchenko | # the Free Software Foundation; either version 2 of the License, or
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9 | c2dca9af | Oleksiy Mishchenko | # (at your option) any later version.
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10 | c2dca9af | Oleksiy Mishchenko | #
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11 | c2dca9af | Oleksiy Mishchenko | # This program is distributed in the hope that it will be useful, but
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12 | c2dca9af | Oleksiy Mishchenko | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | c2dca9af | Oleksiy Mishchenko | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | c2dca9af | Oleksiy Mishchenko | # General Public License for more details.
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15 | c2dca9af | Oleksiy Mishchenko | #
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16 | c2dca9af | Oleksiy Mishchenko | # You should have received a copy of the GNU General Public License
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17 | c2dca9af | Oleksiy Mishchenko | # along with this program; if not, write to the Free Software
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18 | c2dca9af | Oleksiy Mishchenko | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | c2dca9af | Oleksiy Mishchenko | # 02110-1301, USA.
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20 | c2dca9af | Oleksiy Mishchenko | |
21 | c2dca9af | Oleksiy Mishchenko | |
22 | c2dca9af | Oleksiy Mishchenko | """Remote API base resources library.
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23 | c2dca9af | Oleksiy Mishchenko |
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24 | c2dca9af | Oleksiy Mishchenko | """
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25 | c2dca9af | Oleksiy Mishchenko | |
26 | 59b4eeef | Iustin Pop | import logging |
27 | 59b4eeef | Iustin Pop | |
28 | 441e7cfd | Oleksiy Mishchenko | from ganeti import luxi |
29 | b5b67ef9 | Michael Hanselmann | from ganeti import rapi |
30 | 3d103742 | Iustin Pop | from ganeti import http |
31 | 25e39bfa | Iustin Pop | from ganeti import ssconf |
32 | 25e39bfa | Iustin Pop | from ganeti import constants |
33 | 59b4eeef | Iustin Pop | from ganeti import opcodes |
34 | 59b4eeef | Iustin Pop | from ganeti import errors |
35 | 441e7cfd | Oleksiy Mishchenko | |
36 | c2dca9af | Oleksiy Mishchenko | |
37 | c2dca9af | Oleksiy Mishchenko | def BuildUriList(ids, uri_format, uri_fields=("name", "uri")): |
38 | c2dca9af | Oleksiy Mishchenko | """Builds a URI list as used by index resources.
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39 | c2dca9af | Oleksiy Mishchenko |
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40 | c41eea6e | Iustin Pop | @param ids: list of ids as strings
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41 | c41eea6e | Iustin Pop | @param uri_format: format to be applied for URI
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42 | c41eea6e | Iustin Pop | @param uri_fields: optional parameter for field IDs
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43 | c2dca9af | Oleksiy Mishchenko |
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44 | c2dca9af | Oleksiy Mishchenko | """
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45 | c2dca9af | Oleksiy Mishchenko | (field_id, field_uri) = uri_fields |
46 | dca1764e | Iustin Pop | |
47 | c2dca9af | Oleksiy Mishchenko | def _MapId(m_id): |
48 | c2dca9af | Oleksiy Mishchenko | return { field_id: m_id, field_uri: uri_format % m_id, }
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49 | c2dca9af | Oleksiy Mishchenko | |
50 | c2dca9af | Oleksiy Mishchenko | # Make sure the result is sorted, makes it nicer to look at and simplifies
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51 | c2dca9af | Oleksiy Mishchenko | # unittests.
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52 | c2dca9af | Oleksiy Mishchenko | ids.sort() |
53 | c2dca9af | Oleksiy Mishchenko | |
54 | c2dca9af | Oleksiy Mishchenko | return map(_MapId, ids) |
55 | c2dca9af | Oleksiy Mishchenko | |
56 | c2dca9af | Oleksiy Mishchenko | |
57 | c2dca9af | Oleksiy Mishchenko | def ExtractField(sequence, index): |
58 | c2dca9af | Oleksiy Mishchenko | """Creates a list containing one column out of a list of lists.
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59 | c2dca9af | Oleksiy Mishchenko |
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60 | c41eea6e | Iustin Pop | @param sequence: sequence of lists
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61 | c41eea6e | Iustin Pop | @param index: index of field
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62 | c2dca9af | Oleksiy Mishchenko |
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63 | c2dca9af | Oleksiy Mishchenko | """
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64 | c2dca9af | Oleksiy Mishchenko | return map(lambda item: item[index], sequence) |
65 | c2dca9af | Oleksiy Mishchenko | |
66 | c2dca9af | Oleksiy Mishchenko | |
67 | c2dca9af | Oleksiy Mishchenko | def MapFields(names, data): |
68 | c2dca9af | Oleksiy Mishchenko | """Maps two lists into one dictionary.
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69 | c2dca9af | Oleksiy Mishchenko |
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70 | c41eea6e | Iustin Pop | Example::
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71 | c41eea6e | Iustin Pop | >>> MapFields(["a", "b"], ["foo", 123])
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72 | c41eea6e | Iustin Pop | {'a': 'foo', 'b': 123}
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73 | c2dca9af | Oleksiy Mishchenko |
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74 | c41eea6e | Iustin Pop | @param names: field names (list of strings)
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75 | c41eea6e | Iustin Pop | @param data: field data (list)
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76 | c2dca9af | Oleksiy Mishchenko |
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77 | c2dca9af | Oleksiy Mishchenko | """
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78 | c2dca9af | Oleksiy Mishchenko | if len(names) != len(data): |
79 | c2dca9af | Oleksiy Mishchenko | raise AttributeError("Names and data must have the same length") |
80 | dca1764e | Iustin Pop | return dict(zip(names, data)) |
81 | c2dca9af | Oleksiy Mishchenko | |
82 | c2dca9af | Oleksiy Mishchenko | |
83 | 64246438 | Iustin Pop | def _Tags_GET(kind, name): |
84 | c2dca9af | Oleksiy Mishchenko | """Helper function to retrieve tags.
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85 | c2dca9af | Oleksiy Mishchenko |
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86 | c2dca9af | Oleksiy Mishchenko | """
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87 | 25e39bfa | Iustin Pop | if kind == constants.TAG_INSTANCE or kind == constants.TAG_NODE: |
88 | 25e39bfa | Iustin Pop | if not name: |
89 | 59b4eeef | Iustin Pop | raise http.HttpBadRequest("Missing name on tag request") |
90 | 59b4eeef | Iustin Pop | cl = GetClient() |
91 | 25e39bfa | Iustin Pop | if kind == constants.TAG_INSTANCE:
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92 | 25e39bfa | Iustin Pop | fn = cl.QueryInstances |
93 | 25e39bfa | Iustin Pop | else:
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94 | 25e39bfa | Iustin Pop | fn = cl.QueryNodes |
95 | 25e39bfa | Iustin Pop | result = fn(names=[name], fields=["tags"], use_locking=False) |
96 | 25e39bfa | Iustin Pop | if not result or not result[0]: |
97 | 25e39bfa | Iustin Pop | raise http.HttpBadGateway("Invalid response from tag query") |
98 | 25e39bfa | Iustin Pop | tags = result[0][0] |
99 | 25e39bfa | Iustin Pop | elif kind == constants.TAG_CLUSTER:
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100 | 25e39bfa | Iustin Pop | ssc = ssconf.SimpleStore() |
101 | 25e39bfa | Iustin Pop | tags = ssc.GetClusterTags() |
102 | 25e39bfa | Iustin Pop | |
103 | c2dca9af | Oleksiy Mishchenko | return list(tags) |
104 | c2dca9af | Oleksiy Mishchenko | |
105 | c2dca9af | Oleksiy Mishchenko | |
106 | 64246438 | Iustin Pop | def _Tags_PUT(kind, tags, name, dry_run): |
107 | 441e7cfd | Oleksiy Mishchenko | """Helper function to set tags.
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108 | 441e7cfd | Oleksiy Mishchenko |
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109 | 441e7cfd | Oleksiy Mishchenko | """
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110 | 64246438 | Iustin Pop | return SubmitJob([opcodes.OpAddTags(kind=kind, name=name,
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111 | 64246438 | Iustin Pop | tags=tags, dry_run=dry_run)]) |
112 | 441e7cfd | Oleksiy Mishchenko | |
113 | 441e7cfd | Oleksiy Mishchenko | |
114 | 64246438 | Iustin Pop | def _Tags_DELETE(kind, tags, name, dry_run): |
115 | 15fd9fd5 | Oleksiy Mishchenko | """Helper function to delete tags.
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116 | 15fd9fd5 | Oleksiy Mishchenko |
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117 | 15fd9fd5 | Oleksiy Mishchenko | """
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118 | 64246438 | Iustin Pop | return SubmitJob([opcodes.OpDelTags(kind=kind, name=name,
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119 | 64246438 | Iustin Pop | tags=tags, dry_run=dry_run)]) |
120 | 15fd9fd5 | Oleksiy Mishchenko | |
121 | 15fd9fd5 | Oleksiy Mishchenko | |
122 | 51ee2f49 | Oleksiy Mishchenko | def MapBulkFields(itemslist, fields): |
123 | 51ee2f49 | Oleksiy Mishchenko | """Map value to field name in to one dictionary.
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124 | 51ee2f49 | Oleksiy Mishchenko |
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125 | c41eea6e | Iustin Pop | @param itemslist: a list of items values
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126 | c41eea6e | Iustin Pop | @param fields: a list of items names
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127 | c41eea6e | Iustin Pop |
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128 | c41eea6e | Iustin Pop | @return: a list of mapped dictionaries
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129 | 51ee2f49 | Oleksiy Mishchenko |
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130 | 51ee2f49 | Oleksiy Mishchenko | """
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131 | 51ee2f49 | Oleksiy Mishchenko | items_details = [] |
132 | 51ee2f49 | Oleksiy Mishchenko | for item in itemslist: |
133 | 51ee2f49 | Oleksiy Mishchenko | mapped = MapFields(fields, item) |
134 | 51ee2f49 | Oleksiy Mishchenko | items_details.append(mapped) |
135 | 51ee2f49 | Oleksiy Mishchenko | return items_details
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136 | 51ee2f49 | Oleksiy Mishchenko | |
137 | 51ee2f49 | Oleksiy Mishchenko | |
138 | d50b3059 | Oleksiy Mishchenko | def MakeParamsDict(opts, params): |
139 | c41eea6e | Iustin Pop | """Makes params dictionary out of a option set.
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140 | d50b3059 | Oleksiy Mishchenko |
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141 | d50b3059 | Oleksiy Mishchenko | This function returns a dictionary needed for hv or be parameters. But only
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142 | d50b3059 | Oleksiy Mishchenko | those fields which provided in the option set. Takes parameters frozensets
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143 | d50b3059 | Oleksiy Mishchenko | from constants.
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144 | d50b3059 | Oleksiy Mishchenko |
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145 | d50b3059 | Oleksiy Mishchenko | @type opts: dict
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146 | d50b3059 | Oleksiy Mishchenko | @param opts: selected options
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147 | d50b3059 | Oleksiy Mishchenko | @type params: frozenset
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148 | d50b3059 | Oleksiy Mishchenko | @param params: subset of options
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149 | d50b3059 | Oleksiy Mishchenko | @rtype: dict
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150 | d50b3059 | Oleksiy Mishchenko | @return: dictionary of options, filtered by given subset.
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151 | d50b3059 | Oleksiy Mishchenko |
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152 | d50b3059 | Oleksiy Mishchenko | """
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153 | d50b3059 | Oleksiy Mishchenko | result = {} |
154 | d50b3059 | Oleksiy Mishchenko | |
155 | d50b3059 | Oleksiy Mishchenko | for p in params: |
156 | d50b3059 | Oleksiy Mishchenko | try:
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157 | d50b3059 | Oleksiy Mishchenko | value = opts[p] |
158 | d50b3059 | Oleksiy Mishchenko | except KeyError: |
159 | d50b3059 | Oleksiy Mishchenko | continue
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160 | d50b3059 | Oleksiy Mishchenko | result[p] = value |
161 | d50b3059 | Oleksiy Mishchenko | |
162 | d50b3059 | Oleksiy Mishchenko | return result
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163 | d50b3059 | Oleksiy Mishchenko | |
164 | d50b3059 | Oleksiy Mishchenko | |
165 | 59b4eeef | Iustin Pop | def SubmitJob(op, cl=None): |
166 | 59b4eeef | Iustin Pop | """Generic wrapper for submit job, for better http compatibility.
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167 | 59b4eeef | Iustin Pop |
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168 | 59b4eeef | Iustin Pop | @type op: list
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169 | 59b4eeef | Iustin Pop | @param op: the list of opcodes for the job
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170 | 59b4eeef | Iustin Pop | @type cl: None or luxi.Client
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171 | 59b4eeef | Iustin Pop | @param cl: optional luxi client to use
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172 | 59b4eeef | Iustin Pop | @rtype: string
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173 | 59b4eeef | Iustin Pop | @return: the job ID
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174 | 59b4eeef | Iustin Pop |
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175 | 59b4eeef | Iustin Pop | """
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176 | 59b4eeef | Iustin Pop | try:
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177 | 59b4eeef | Iustin Pop | if cl is None: |
178 | 59b4eeef | Iustin Pop | cl = GetClient() |
179 | 59b4eeef | Iustin Pop | return cl.SubmitJob(op)
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180 | 59b4eeef | Iustin Pop | except errors.JobQueueFull:
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181 | 59b4eeef | Iustin Pop | raise http.HttpServiceUnavailable("Job queue is full, needs archiving") |
182 | 59b4eeef | Iustin Pop | except errors.JobQueueDrainError:
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183 | 59b4eeef | Iustin Pop | raise http.HttpServiceUnavailable("Job queue is drained, cannot submit") |
184 | 59b4eeef | Iustin Pop | except luxi.NoMasterError, err:
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185 | 59b4eeef | Iustin Pop | raise http.HttpBadGateway("Master seems to unreachable: %s" % str(err)) |
186 | 59b4eeef | Iustin Pop | except luxi.TimeoutError, err:
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187 | 59b4eeef | Iustin Pop | raise http.HttpGatewayTimeout("Timeout while talking to the master" |
188 | 59b4eeef | Iustin Pop | " daemon. Error: %s" % str(err)) |
189 | 59b4eeef | Iustin Pop | |
190 | 59b4eeef | Iustin Pop | def GetClient(): |
191 | 59b4eeef | Iustin Pop | """Geric wrapper for luxi.Client(), for better http compatiblity.
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192 | 59b4eeef | Iustin Pop |
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193 | 59b4eeef | Iustin Pop | """
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194 | 59b4eeef | Iustin Pop | try:
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195 | 59b4eeef | Iustin Pop | return luxi.Client()
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196 | 59b4eeef | Iustin Pop | except luxi.NoMasterError, err:
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197 | 59b4eeef | Iustin Pop | raise http.HttpBadGateway("Master seems to unreachable: %s" % str(err)) |
198 | 59b4eeef | Iustin Pop | |
199 | 59b4eeef | Iustin Pop | |
200 | 59b4eeef | Iustin Pop | def FeedbackFn(ts, log_type, log_msg): |
201 | 59b4eeef | Iustin Pop | """Feedback logging function for http case.
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202 | 59b4eeef | Iustin Pop |
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203 | 59b4eeef | Iustin Pop | We don't have a stdout for printing log messages, so log them to the
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204 | 59b4eeef | Iustin Pop | http log at least.
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205 | 59b4eeef | Iustin Pop |
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206 | 59b4eeef | Iustin Pop | """
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207 | 59b4eeef | Iustin Pop | logging.info("%s: %s", log_type, log_msg)
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208 | 59b4eeef | Iustin Pop | |
209 | 59b4eeef | Iustin Pop | |
210 | c2dca9af | Oleksiy Mishchenko | class R_Generic(object): |
211 | c2dca9af | Oleksiy Mishchenko | """Generic class for resources.
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212 | c2dca9af | Oleksiy Mishchenko |
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213 | c2dca9af | Oleksiy Mishchenko | """
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214 | b5b67ef9 | Michael Hanselmann | # Default permission requirements
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215 | b5b67ef9 | Michael Hanselmann | GET_ACCESS = [] |
216 | b5b67ef9 | Michael Hanselmann | PUT_ACCESS = [rapi.RAPI_ACCESS_WRITE] |
217 | b5b67ef9 | Michael Hanselmann | POST_ACCESS = [rapi.RAPI_ACCESS_WRITE] |
218 | b5b67ef9 | Michael Hanselmann | DELETE_ACCESS = [rapi.RAPI_ACCESS_WRITE] |
219 | b5b67ef9 | Michael Hanselmann | |
220 | 7a8f64da | Oleksiy Mishchenko | def __init__(self, items, queryargs, req): |
221 | c2dca9af | Oleksiy Mishchenko | """Generic resource constructor.
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222 | c2dca9af | Oleksiy Mishchenko |
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223 | c41eea6e | Iustin Pop | @param items: a list with variables encoded in the URL
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224 | c41eea6e | Iustin Pop | @param queryargs: a dictionary with additional options from URL
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225 | c2dca9af | Oleksiy Mishchenko |
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226 | c2dca9af | Oleksiy Mishchenko | """
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227 | c2dca9af | Oleksiy Mishchenko | self.items = items
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228 | c2dca9af | Oleksiy Mishchenko | self.queryargs = queryargs
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229 | 7a8f64da | Oleksiy Mishchenko | self.req = req
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230 | 713faea6 | Oleksiy Mishchenko | self.sn = None |
231 | 713faea6 | Oleksiy Mishchenko | |
232 | 713faea6 | Oleksiy Mishchenko | def getSerialNumber(self): |
233 | 713faea6 | Oleksiy Mishchenko | """Get Serial Number.
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234 | 713faea6 | Oleksiy Mishchenko |
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235 | 713faea6 | Oleksiy Mishchenko | """
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236 | 713faea6 | Oleksiy Mishchenko | return self.sn |
237 | 3d103742 | Iustin Pop | |
238 | 3fb8680a | Michael Hanselmann | def _checkIntVariable(self, name, default=0): |
239 | 3d103742 | Iustin Pop | """Return the parsed value of an int argument.
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240 | 3d103742 | Iustin Pop |
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241 | 3d103742 | Iustin Pop | """
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242 | 3fb8680a | Michael Hanselmann | val = self.queryargs.get(name, default)
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243 | 3d103742 | Iustin Pop | if isinstance(val, list): |
244 | 3d103742 | Iustin Pop | if val:
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245 | 3d103742 | Iustin Pop | val = val[0]
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246 | 3d103742 | Iustin Pop | else:
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247 | 3fb8680a | Michael Hanselmann | val = default |
248 | 3d103742 | Iustin Pop | try:
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249 | 3d103742 | Iustin Pop | val = int(val)
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250 | 7c4d6c7b | Michael Hanselmann | except (ValueError, TypeError): |
251 | 6e99c5a0 | Iustin Pop | raise http.HttpBadRequest("Invalid value for the" |
252 | 3d103742 | Iustin Pop | " '%s' parameter" % (name,))
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253 | 3d103742 | Iustin Pop | return val
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254 | 3d103742 | Iustin Pop | |
255 | e5b7c4ca | Iustin Pop | def _checkStringVariable(self, name, default=None): |
256 | e5b7c4ca | Iustin Pop | """Return the parsed value of an int argument.
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257 | e5b7c4ca | Iustin Pop |
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258 | e5b7c4ca | Iustin Pop | """
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259 | e5b7c4ca | Iustin Pop | val = self.queryargs.get(name, default)
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260 | e5b7c4ca | Iustin Pop | if isinstance(val, list): |
261 | e5b7c4ca | Iustin Pop | if val:
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262 | e5b7c4ca | Iustin Pop | val = val[0]
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263 | e5b7c4ca | Iustin Pop | else:
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264 | e5b7c4ca | Iustin Pop | val = default |
265 | e5b7c4ca | Iustin Pop | return val
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266 | 3d103742 | Iustin Pop | |
267 | 6e99c5a0 | Iustin Pop | def getBodyParameter(self, name, *args): |
268 | 6e99c5a0 | Iustin Pop | """Check and return the value for a given parameter.
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269 | 6e99c5a0 | Iustin Pop |
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270 | 6e99c5a0 | Iustin Pop | If a second parameter is not given, an error will be returned,
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271 | 6e99c5a0 | Iustin Pop | otherwise this parameter specifies the default value.
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272 | 6e99c5a0 | Iustin Pop |
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273 | 6e99c5a0 | Iustin Pop | @param name: the required parameter
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274 | 6e99c5a0 | Iustin Pop |
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275 | 6e99c5a0 | Iustin Pop | """
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276 | 6e99c5a0 | Iustin Pop | if name in self.req.request_body: |
277 | 6e99c5a0 | Iustin Pop | return self.req.request_body[name] |
278 | 6e99c5a0 | Iustin Pop | elif args:
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279 | 6e99c5a0 | Iustin Pop | return args[0] |
280 | 6e99c5a0 | Iustin Pop | else:
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281 | 6e99c5a0 | Iustin Pop | raise http.HttpBadRequest("Required parameter '%s' is missing" % |
282 | 6e99c5a0 | Iustin Pop | name) |
283 | 6e99c5a0 | Iustin Pop | |
284 | 3d103742 | Iustin Pop | def useLocking(self): |
285 | 3d103742 | Iustin Pop | """Check if the request specifies locking.
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286 | 3d103742 | Iustin Pop |
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287 | 3d103742 | Iustin Pop | """
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288 | 3d103742 | Iustin Pop | return self._checkIntVariable('lock') |
289 | 3d103742 | Iustin Pop | |
290 | 3d103742 | Iustin Pop | def useBulk(self): |
291 | 3d103742 | Iustin Pop | """Check if the request specifies bulk querying.
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292 | 3d103742 | Iustin Pop |
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293 | 3d103742 | Iustin Pop | """
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294 | 3d103742 | Iustin Pop | return self._checkIntVariable('bulk') |
295 | 6f59b964 | Iustin Pop | |
296 | 3427d34f | Michael Hanselmann | def useForce(self): |
297 | 3427d34f | Michael Hanselmann | """Check if the request specifies a forced operation.
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298 | 3427d34f | Michael Hanselmann |
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299 | 3427d34f | Michael Hanselmann | """
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300 | 3427d34f | Michael Hanselmann | return self._checkIntVariable('force') |
301 | 3427d34f | Michael Hanselmann | |
302 | 6f59b964 | Iustin Pop | def dryRun(self): |
303 | 6f59b964 | Iustin Pop | """Check if the request specifies dry-run mode.
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304 | 6f59b964 | Iustin Pop |
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305 | 6f59b964 | Iustin Pop | """
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306 | 6f59b964 | Iustin Pop | return self._checkIntVariable('dry-run') |