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2 | a8083063 | Iustin Pop | #
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3 | a8083063 | Iustin Pop | |
4 | 4b63dc7a | Iustin Pop | # Copyright (C) 2006, 2007, 2008, 2009, 2010 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 | """Ganeti exception handling"""
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23 | a8083063 | Iustin Pop | |
24 | a8083063 | Iustin Pop | |
25 | 5c983ee5 | Iustin Pop | # OpPrereqError failure types
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26 | 5c983ee5 | Iustin Pop | |
27 | 104f4ca1 | Iustin Pop | # resolver errors
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28 | 104f4ca1 | Iustin Pop | ECODE_RESOLVER = "resolver_error"
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29 | 5c983ee5 | Iustin Pop | # not enough resources (iallocator failure, disk space, memory, etc.)
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30 | 5c983ee5 | Iustin Pop | ECODE_NORES = "insufficient_resources"
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31 | 5c983ee5 | Iustin Pop | # wrong arguments (at syntax level)
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32 | 5c983ee5 | Iustin Pop | ECODE_INVAL = "wrong_input"
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33 | 5c983ee5 | Iustin Pop | # wrong entity state
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34 | 5c983ee5 | Iustin Pop | ECODE_STATE = "wrong_state"
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35 | 5c983ee5 | Iustin Pop | # entity not found
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36 | 5c983ee5 | Iustin Pop | ECODE_NOENT = "unknown_entity"
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37 | 5c983ee5 | Iustin Pop | # entity already exists
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38 | 5c983ee5 | Iustin Pop | ECODE_EXISTS = "already_exists"
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39 | 5c983ee5 | Iustin Pop | # resource not unique (e.g. MAC or IP duplication)
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40 | 5c983ee5 | Iustin Pop | ECODE_NOTUNIQUE = "resource_not_unique"
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41 | 5c983ee5 | Iustin Pop | # internal cluster error
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42 | 5c983ee5 | Iustin Pop | ECODE_FAULT = "internal_error"
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43 | 5c983ee5 | Iustin Pop | # environment error (e.g. node disk error)
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44 | 5c983ee5 | Iustin Pop | ECODE_ENVIRON = "environment_error"
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45 | 5c983ee5 | Iustin Pop | |
46 | df156277 | Michael Hanselmann | #: List of all failure types
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47 | df156277 | Michael Hanselmann | ECODE_ALL = frozenset([
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48 | df156277 | Michael Hanselmann | ECODE_RESOLVER, |
49 | df156277 | Michael Hanselmann | ECODE_NORES, |
50 | df156277 | Michael Hanselmann | ECODE_INVAL, |
51 | df156277 | Michael Hanselmann | ECODE_STATE, |
52 | df156277 | Michael Hanselmann | ECODE_NOENT, |
53 | df156277 | Michael Hanselmann | ECODE_EXISTS, |
54 | df156277 | Michael Hanselmann | ECODE_NOTUNIQUE, |
55 | df156277 | Michael Hanselmann | ECODE_FAULT, |
56 | df156277 | Michael Hanselmann | ECODE_ENVIRON, |
57 | df156277 | Michael Hanselmann | ]) |
58 | df156277 | Michael Hanselmann | |
59 | 5c983ee5 | Iustin Pop | |
60 | a8083063 | Iustin Pop | class GenericError(Exception): |
61 | a8083063 | Iustin Pop | """Base exception for Ganeti.
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62 | a8083063 | Iustin Pop |
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63 | a8083063 | Iustin Pop | """
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64 | a8083063 | Iustin Pop | pass
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65 | a8083063 | Iustin Pop | |
66 | a8083063 | Iustin Pop | |
67 | a8083063 | Iustin Pop | class LVMError(GenericError): |
68 | a8083063 | Iustin Pop | """LVM-related exception.
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69 | a8083063 | Iustin Pop |
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70 | a8083063 | Iustin Pop | This exception codifies problems with LVM setup.
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71 | a8083063 | Iustin Pop |
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72 | a8083063 | Iustin Pop | """
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73 | a8083063 | Iustin Pop | pass
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74 | a8083063 | Iustin Pop | |
75 | a8083063 | Iustin Pop | |
76 | a8083063 | Iustin Pop | class LockError(GenericError): |
77 | a8083063 | Iustin Pop | """Lock error exception.
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78 | a8083063 | Iustin Pop |
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79 | a8083063 | Iustin Pop | This signifies problems in the locking subsystem.
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80 | a8083063 | Iustin Pop |
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81 | a8083063 | Iustin Pop | """
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82 | a8083063 | Iustin Pop | pass
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83 | a8083063 | Iustin Pop | |
84 | a8083063 | Iustin Pop | |
85 | a8083063 | Iustin Pop | class HypervisorError(GenericError): |
86 | a8083063 | Iustin Pop | """Hypervisor-related exception.
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87 | a8083063 | Iustin Pop |
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88 | a8083063 | Iustin Pop | This is raised in case we can't communicate with the hypervisor
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89 | a8083063 | Iustin Pop | properly.
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90 | a8083063 | Iustin Pop |
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91 | a8083063 | Iustin Pop | """
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92 | a8083063 | Iustin Pop | pass
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93 | a8083063 | Iustin Pop | |
94 | a8083063 | Iustin Pop | |
95 | a8083063 | Iustin Pop | class ProgrammerError(GenericError): |
96 | a8083063 | Iustin Pop | """Programming-related error.
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97 | a8083063 | Iustin Pop |
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98 | a8083063 | Iustin Pop | This is raised in cases we determine that the calling conventions
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99 | a8083063 | Iustin Pop | have been violated, meaning we got some desynchronisation between
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100 | a8083063 | Iustin Pop | parts of our code. It signifies a real programming bug.
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101 | a8083063 | Iustin Pop |
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102 | a8083063 | Iustin Pop | """
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103 | a8083063 | Iustin Pop | pass
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104 | a8083063 | Iustin Pop | |
105 | a8083063 | Iustin Pop | |
106 | a8083063 | Iustin Pop | class BlockDeviceError(GenericError): |
107 | a8083063 | Iustin Pop | """Block-device related exception.
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108 | a8083063 | Iustin Pop |
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109 | a8083063 | Iustin Pop | This is raised in case we can't setup the instance's block devices
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110 | a8083063 | Iustin Pop | properly.
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111 | a8083063 | Iustin Pop |
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112 | a8083063 | Iustin Pop | """
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113 | a8083063 | Iustin Pop | pass
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114 | a8083063 | Iustin Pop | |
115 | a8083063 | Iustin Pop | |
116 | a8083063 | Iustin Pop | class ConfigurationError(GenericError): |
117 | a8083063 | Iustin Pop | """Configuration related exception.
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118 | a8083063 | Iustin Pop |
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119 | a8083063 | Iustin Pop | Things like having an instance with a primary node that doesn't
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120 | a8083063 | Iustin Pop | exist in the config or such raise this exception.
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121 | a8083063 | Iustin Pop |
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122 | a8083063 | Iustin Pop | """
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123 | a8083063 | Iustin Pop | pass
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124 | a8083063 | Iustin Pop | |
125 | a8083063 | Iustin Pop | |
126 | 4b63dc7a | Iustin Pop | class ConfigVersionMismatch(ConfigurationError): |
127 | 4b63dc7a | Iustin Pop | """Version mismatch in the configuration file.
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128 | 4b63dc7a | Iustin Pop |
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129 | 4b63dc7a | Iustin Pop | The error has two arguments: the expected and the actual found
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130 | 4b63dc7a | Iustin Pop | version.
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131 | 4b63dc7a | Iustin Pop |
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132 | 4b63dc7a | Iustin Pop | """
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133 | 4b63dc7a | Iustin Pop | pass
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134 | 4b63dc7a | Iustin Pop | |
135 | 4b63dc7a | Iustin Pop | |
136 | 2c8a5690 | Guido Trotter | class ReservationError(GenericError): |
137 | 2c8a5690 | Guido Trotter | """Errors reserving a resource.
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138 | 2c8a5690 | Guido Trotter |
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139 | 2c8a5690 | Guido Trotter | """
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140 | 2c8a5690 | Guido Trotter | |
141 | 2c8a5690 | Guido Trotter | |
142 | a8083063 | Iustin Pop | class RemoteError(GenericError): |
143 | a8083063 | Iustin Pop | """Programming-related error on remote call.
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144 | a8083063 | Iustin Pop |
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145 | a8083063 | Iustin Pop | This is raised when an unhandled error occurs in a call to a
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146 | a8083063 | Iustin Pop | remote node. It usually signifies a real programming bug.
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147 | a8083063 | Iustin Pop |
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148 | a8083063 | Iustin Pop | """
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149 | a8083063 | Iustin Pop | pass
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150 | a8083063 | Iustin Pop | |
151 | a8083063 | Iustin Pop | |
152 | f4a2f532 | Guido Trotter | class SignatureError(GenericError): |
153 | f4a2f532 | Guido Trotter | """Error authenticating a remote message.
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154 | f4a2f532 | Guido Trotter |
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155 | f4a2f532 | Guido Trotter | This is raised when the hmac signature on a message doesn't verify correctly
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156 | f4a2f532 | Guido Trotter | to the message itself. It can happen because of network unreliability or
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157 | f4a2f532 | Guido Trotter | because of spurious traffic.
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158 | f4a2f532 | Guido Trotter |
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159 | f4a2f532 | Guido Trotter | """
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160 | f4a2f532 | Guido Trotter | pass
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161 | f4a2f532 | Guido Trotter | |
162 | f4a2f532 | Guido Trotter | |
163 | a8083063 | Iustin Pop | class ParameterError(GenericError): |
164 | a8083063 | Iustin Pop | """A passed parameter to a command is invalid.
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165 | a8083063 | Iustin Pop |
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166 | a8083063 | Iustin Pop | This is raised when the parameter passed to a request function is
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167 | a8083063 | Iustin Pop | invalid. Correct code should have verified this before passing the
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168 | a8083063 | Iustin Pop | request structure.
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169 | a8083063 | Iustin Pop |
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170 | a8083063 | Iustin Pop | The argument to this exception should be the parameter name.
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171 | a8083063 | Iustin Pop |
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172 | a8083063 | Iustin Pop | """
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173 | a8083063 | Iustin Pop | pass
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174 | a8083063 | Iustin Pop | |
175 | a8083063 | Iustin Pop | |
176 | a8083063 | Iustin Pop | class OpPrereqError(GenericError): |
177 | a8083063 | Iustin Pop | """Prerequisites for the OpCode are not fulfilled.
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178 | a8083063 | Iustin Pop |
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179 | 5c983ee5 | Iustin Pop | This exception will have either one or two arguments. For the
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180 | 5c983ee5 | Iustin Pop | two-argument construction, the second argument should be one of the
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181 | 5c983ee5 | Iustin Pop | ECODE_* codes.
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182 | 5c983ee5 | Iustin Pop |
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183 | a8083063 | Iustin Pop | """
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184 | a8083063 | Iustin Pop | |
185 | 098c0958 | Michael Hanselmann | |
186 | a8083063 | Iustin Pop | class OpExecError(GenericError): |
187 | a8083063 | Iustin Pop | """Error during OpCode execution.
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188 | a8083063 | Iustin Pop |
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189 | a8083063 | Iustin Pop | """
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190 | a8083063 | Iustin Pop | |
191 | 098c0958 | Michael Hanselmann | |
192 | 1ce03fb1 | Michael Hanselmann | class OpResultError(GenericError): |
193 | 1ce03fb1 | Michael Hanselmann | """Issue with OpCode result.
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194 | 1ce03fb1 | Michael Hanselmann |
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195 | 1ce03fb1 | Michael Hanselmann | """
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196 | 1ce03fb1 | Michael Hanselmann | |
197 | 1ce03fb1 | Michael Hanselmann | |
198 | a8083063 | Iustin Pop | class OpCodeUnknown(GenericError): |
199 | a8083063 | Iustin Pop | """Unknown opcode submitted.
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200 | a8083063 | Iustin Pop |
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201 | a8083063 | Iustin Pop | This signifies a mismatch between the definitions on the client and
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202 | a8083063 | Iustin Pop | server side.
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203 | a8083063 | Iustin Pop |
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204 | a8083063 | Iustin Pop | """
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205 | a8083063 | Iustin Pop | |
206 | 098c0958 | Michael Hanselmann | |
207 | 685ee993 | Iustin Pop | class JobLost(GenericError): |
208 | 685ee993 | Iustin Pop | """Submitted job lost.
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209 | 685ee993 | Iustin Pop |
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210 | 685ee993 | Iustin Pop | The job was submitted but it cannot be found in the current job
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211 | 685ee993 | Iustin Pop | list.
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212 | 685ee993 | Iustin Pop |
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213 | 685ee993 | Iustin Pop | """
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214 | 685ee993 | Iustin Pop | |
215 | 685ee993 | Iustin Pop | |
216 | 3d6c5566 | Guido Trotter | class JobFileCorrupted(GenericError): |
217 | 3d6c5566 | Guido Trotter | """Job file could not be properly decoded/restored.
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218 | 3d6c5566 | Guido Trotter |
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219 | 3d6c5566 | Guido Trotter | """
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220 | 3d6c5566 | Guido Trotter | |
221 | 3d6c5566 | Guido Trotter | |
222 | 89e1fc26 | Iustin Pop | class ResolverError(GenericError): |
223 | 89e1fc26 | Iustin Pop | """Host name cannot be resolved.
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224 | 89e1fc26 | Iustin Pop |
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225 | 89e1fc26 | Iustin Pop | This is not a normal situation for Ganeti, as we rely on having a
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226 | 89e1fc26 | Iustin Pop | working resolver.
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227 | 89e1fc26 | Iustin Pop |
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228 | 89e1fc26 | Iustin Pop | The non-resolvable hostname is available as the first element of the
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229 | 89e1fc26 | Iustin Pop | args tuple; the other two elements of the tuple are the first two
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230 | 89e1fc26 | Iustin Pop | args of the socket.gaierror exception (error code and description).
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231 | 89e1fc26 | Iustin Pop |
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232 | 89e1fc26 | Iustin Pop | """
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233 | 89e1fc26 | Iustin Pop | |
234 | 89e1fc26 | Iustin Pop | |
235 | a8083063 | Iustin Pop | class HooksFailure(GenericError): |
236 | a8083063 | Iustin Pop | """A generic hook failure.
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237 | a8083063 | Iustin Pop |
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238 | a8083063 | Iustin Pop | This signifies usually a setup misconfiguration.
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239 | a8083063 | Iustin Pop |
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240 | a8083063 | Iustin Pop | """
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241 | a8083063 | Iustin Pop | |
242 | 098c0958 | Michael Hanselmann | |
243 | a8083063 | Iustin Pop | class HooksAbort(HooksFailure): |
244 | a8083063 | Iustin Pop | """A required hook has failed.
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245 | a8083063 | Iustin Pop |
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246 | a8083063 | Iustin Pop | This caused an abort of the operation in the initial phase. This
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247 | a8083063 | Iustin Pop | exception always has an attribute args which is a list of tuples of:
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248 | a8083063 | Iustin Pop | - node: the source node on which this hooks has failed
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249 | a8083063 | Iustin Pop | - script: the name of the script which aborted the run
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250 | a8083063 | Iustin Pop |
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251 | a8083063 | Iustin Pop | """
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252 | a8083063 | Iustin Pop | |
253 | 098c0958 | Michael Hanselmann | |
254 | a8083063 | Iustin Pop | class UnitParseError(GenericError): |
255 | a8083063 | Iustin Pop | """Unable to parse size unit.
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256 | a8083063 | Iustin Pop |
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257 | a8083063 | Iustin Pop | """
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258 | a8083063 | Iustin Pop | |
259 | ac2d0fe4 | Michael Hanselmann | |
260 | 31155d60 | Balazs Lecz | class ParseError(GenericError): |
261 | 31155d60 | Balazs Lecz | """Generic parse error.
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262 | 31155d60 | Balazs Lecz |
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263 | 31155d60 | Balazs Lecz | Raised when unable to parse user input.
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264 | 31155d60 | Balazs Lecz |
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265 | 31155d60 | Balazs Lecz | """
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266 | 31155d60 | Balazs Lecz | |
267 | 31155d60 | Balazs Lecz | |
268 | a5728081 | Guido Trotter | class TypeEnforcementError(GenericError): |
269 | a5728081 | Guido Trotter | """Unable to enforce data type.
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270 | a5728081 | Guido Trotter |
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271 | a5728081 | Guido Trotter | """
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272 | a8083063 | Iustin Pop | |
273 | ac2d0fe4 | Michael Hanselmann | |
274 | a8083063 | Iustin Pop | class SshKeyError(GenericError): |
275 | a8083063 | Iustin Pop | """Invalid SSH key.
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276 | b0059682 | Guido Trotter |
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277 | a8083063 | Iustin Pop | """
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278 | 5c947f38 | Iustin Pop | |
279 | 5c947f38 | Iustin Pop | |
280 | b6267745 | Andrea Spadaccini | class X509CertError(GenericError): |
281 | b6267745 | Andrea Spadaccini | """Invalid X509 certificate.
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282 | b6267745 | Andrea Spadaccini |
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283 | b6267745 | Andrea Spadaccini | This error has two arguments: the certificate filename and the error cause.
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284 | b6267745 | Andrea Spadaccini |
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285 | b6267745 | Andrea Spadaccini | """
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286 | b6267745 | Andrea Spadaccini | |
287 | b6267745 | Andrea Spadaccini | |
288 | 5c947f38 | Iustin Pop | class TagError(GenericError): |
289 | 5c947f38 | Iustin Pop | """Generic tag error.
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290 | 5c947f38 | Iustin Pop |
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291 | 5c947f38 | Iustin Pop | The argument to this exception will show the exact error.
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292 | 5c947f38 | Iustin Pop |
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293 | 5c947f38 | Iustin Pop | """
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294 | 7bca53e4 | Michael Hanselmann | |
295 | 7bca53e4 | Michael Hanselmann | |
296 | 7bca53e4 | Michael Hanselmann | class CommandError(GenericError): |
297 | 7bca53e4 | Michael Hanselmann | """External command error.
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298 | 7bca53e4 | Michael Hanselmann |
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299 | 7bca53e4 | Michael Hanselmann | """
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300 | e50bdd68 | Guido Trotter | |
301 | e50bdd68 | Guido Trotter | |
302 | ac2d0fe4 | Michael Hanselmann | class StorageError(GenericError): |
303 | ac2d0fe4 | Michael Hanselmann | """Storage-related exception.
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304 | ac2d0fe4 | Michael Hanselmann |
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305 | ac2d0fe4 | Michael Hanselmann | """
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306 | ac2d0fe4 | Michael Hanselmann | |
307 | 589dee9a | Guido Trotter | |
308 | 589dee9a | Guido Trotter | class InotifyError(GenericError): |
309 | 589dee9a | Guido Trotter | """Error raised when there is a failure setting up an inotify watcher.
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310 | 589dee9a | Guido Trotter |
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311 | 589dee9a | Guido Trotter | """
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312 | 589dee9a | Guido Trotter | |
313 | ac2d0fe4 | Michael Hanselmann | |
314 | e50bdd68 | Guido Trotter | class QuitGanetiException(Exception): |
315 | 7e975535 | Stephen Shirley | """Signal Ganeti that it must quit.
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316 | e50bdd68 | Guido Trotter |
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317 | 0623d351 | Iustin Pop | This is not necessarily an error (and thus not a subclass of
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318 | 0623d351 | Iustin Pop | GenericError), but it's an exceptional circumstance and it is thus
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319 | 0623d351 | Iustin Pop | treated. This instance should be instantiated with two values. The
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320 | 0623d351 | Iustin Pop | first one will specify the return code to the caller, and the second
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321 | 0623d351 | Iustin Pop | one will be the returned result (either as an error or as a normal
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322 | 0623d351 | Iustin Pop | result). Usually only the leave cluster rpc call should return
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323 | 0623d351 | Iustin Pop | status True (as there it's expected we quit), every other call will
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324 | 0623d351 | Iustin Pop | return status False (as a critical error was encountered).
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325 | e50bdd68 | Guido Trotter |
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326 | c41eea6e | Iustin Pop | Examples::
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327 | c41eea6e | Iustin Pop |
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328 | e50bdd68 | Guido Trotter | # Return a result of "True" to the caller, but quit ganeti afterwards
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329 | 0623d351 | Iustin Pop | raise QuitGanetiException(True, None)
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330 | e50bdd68 | Guido Trotter | # Send an error to the caller, and quit ganeti
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331 | 0623d351 | Iustin Pop | raise QuitGanetiException(False, "Fatal safety violation, shutting down")
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332 | e50bdd68 | Guido Trotter |
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333 | e50bdd68 | Guido Trotter | """
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334 | e50bdd68 | Guido Trotter | |
335 | f1da30e6 | Michael Hanselmann | |
336 | d11bda8d | Iustin Pop | class JobQueueError(GenericError): |
337 | f1da30e6 | Michael Hanselmann | """Job queue error.
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338 | f1da30e6 | Michael Hanselmann |
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339 | f1da30e6 | Michael Hanselmann | """
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340 | 6797ec29 | Iustin Pop | |
341 | 6797ec29 | Iustin Pop | |
342 | 686d7433 | Iustin Pop | class JobQueueDrainError(JobQueueError): |
343 | 686d7433 | Iustin Pop | """Job queue is marked for drain error.
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344 | 686d7433 | Iustin Pop |
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345 | 686d7433 | Iustin Pop | This is raised when a job submission attempt is made but the queue
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346 | 686d7433 | Iustin Pop | is marked for drain.
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347 | 686d7433 | Iustin Pop |
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348 | 686d7433 | Iustin Pop | """
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349 | 686d7433 | Iustin Pop | |
350 | 686d7433 | Iustin Pop | |
351 | f87b405e | Michael Hanselmann | class JobQueueFull(JobQueueError): |
352 | f87b405e | Michael Hanselmann | """Job queue full error.
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353 | f87b405e | Michael Hanselmann |
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354 | f87b405e | Michael Hanselmann | Raised when job queue size reached its hard limit.
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355 | f87b405e | Michael Hanselmann |
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356 | f87b405e | Michael Hanselmann | """
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357 | f87b405e | Michael Hanselmann | |
358 | f87b405e | Michael Hanselmann | |
359 | b125e3b3 | Guido Trotter | class ConfdRequestError(GenericError): |
360 | b125e3b3 | Guido Trotter | """A request error in Ganeti confd.
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361 | b125e3b3 | Guido Trotter |
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362 | b125e3b3 | Guido Trotter | Events that should make confd abort the current request and proceed serving
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363 | b125e3b3 | Guido Trotter | different ones.
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364 | b125e3b3 | Guido Trotter |
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365 | b125e3b3 | Guido Trotter | """
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366 | b125e3b3 | Guido Trotter | |
367 | b125e3b3 | Guido Trotter | |
368 | 9748ab35 | Guido Trotter | class ConfdMagicError(GenericError): |
369 | 9748ab35 | Guido Trotter | """A magic fourcc error in Ganeti confd.
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370 | 9748ab35 | Guido Trotter |
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371 | 9748ab35 | Guido Trotter | Errors processing the fourcc in ganeti confd datagrams.
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372 | 9748ab35 | Guido Trotter |
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373 | 9748ab35 | Guido Trotter | """
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374 | 9748ab35 | Guido Trotter | |
375 | 9748ab35 | Guido Trotter | |
376 | e4ccf6cd | Guido Trotter | class ConfdClientError(GenericError): |
377 | e4ccf6cd | Guido Trotter | """A magic fourcc error in Ganeti confd.
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378 | e4ccf6cd | Guido Trotter |
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379 | e4ccf6cd | Guido Trotter | Errors in the confd client library.
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380 | e4ccf6cd | Guido Trotter |
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381 | e4ccf6cd | Guido Trotter | """
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382 | e4ccf6cd | Guido Trotter | |
383 | e4ccf6cd | Guido Trotter | |
384 | c8eded0b | Guido Trotter | class UdpDataSizeError(GenericError): |
385 | c8eded0b | Guido Trotter | """UDP payload too big.
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386 | c8eded0b | Guido Trotter |
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387 | c8eded0b | Guido Trotter | """
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388 | c8eded0b | Guido Trotter | |
389 | c8eded0b | Guido Trotter | |
390 | 4c32a8bd | Luca Bigliardi | class NoCtypesError(GenericError): |
391 | 4c32a8bd | Luca Bigliardi | """python ctypes module is not found in the system.
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392 | 4c32a8bd | Luca Bigliardi |
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393 | 4c32a8bd | Luca Bigliardi | """
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394 | 4c32a8bd | Luca Bigliardi | |
395 | 4c32a8bd | Luca Bigliardi | |
396 | 8b312c1d | Manuel Franceschini | class IPAddressError(GenericError): |
397 | 8b312c1d | Manuel Franceschini | """Generic IP address error.
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398 | 8b312c1d | Manuel Franceschini |
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399 | 8b312c1d | Manuel Franceschini | """
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400 | 8b312c1d | Manuel Franceschini | |
401 | 8b312c1d | Manuel Franceschini | |
402 | 7a8bda3f | Michael Hanselmann | class LuxiError(GenericError): |
403 | 7a8bda3f | Michael Hanselmann | """LUXI error.
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404 | 7a8bda3f | Michael Hanselmann |
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405 | 7a8bda3f | Michael Hanselmann | """
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406 | 7a8bda3f | Michael Hanselmann | |
407 | 7a8bda3f | Michael Hanselmann | |
408 | 7578ab0a | Michael Hanselmann | class QueryFilterParseError(ParseError): |
409 | 7578ab0a | Michael Hanselmann | """Error while parsing query filter.
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410 | 7578ab0a | Michael Hanselmann |
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411 | 7578ab0a | Michael Hanselmann | """
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412 | 7578ab0a | Michael Hanselmann | def GetDetails(self): |
413 | 7578ab0a | Michael Hanselmann | """Returns a list of strings with details about the error.
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414 | 7578ab0a | Michael Hanselmann |
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415 | 7578ab0a | Michael Hanselmann | """
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416 | 7578ab0a | Michael Hanselmann | try:
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417 | 7578ab0a | Michael Hanselmann | (_, inner) = self.args
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418 | 7578ab0a | Michael Hanselmann | except IndexError: |
419 | 7578ab0a | Michael Hanselmann | return None |
420 | 7578ab0a | Michael Hanselmann | |
421 | 7578ab0a | Michael Hanselmann | return [str(inner.line), |
422 | 7578ab0a | Michael Hanselmann | (" " * (inner.column - 1)) + "^", |
423 | 7578ab0a | Michael Hanselmann | str(inner)]
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424 | 7578ab0a | Michael Hanselmann | |
425 | 7578ab0a | Michael Hanselmann | |
426 | 6797ec29 | Iustin Pop | # errors should be added above
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427 | 6797ec29 | Iustin Pop | |
428 | 6797ec29 | Iustin Pop | |
429 | 6797ec29 | Iustin Pop | def GetErrorClass(name): |
430 | 6797ec29 | Iustin Pop | """Return the class of an exception.
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431 | 6797ec29 | Iustin Pop |
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432 | 6797ec29 | Iustin Pop | Given the class name, return the class itself.
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433 | 6797ec29 | Iustin Pop |
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434 | 6797ec29 | Iustin Pop | @type name: str
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435 | 6797ec29 | Iustin Pop | @param name: the exception name
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436 | 6797ec29 | Iustin Pop | @rtype: class
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437 | 6797ec29 | Iustin Pop | @return: the actual class, or None if not found
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438 | 6797ec29 | Iustin Pop |
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439 | 6797ec29 | Iustin Pop | """
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440 | 6797ec29 | Iustin Pop | item = globals().get(name, None) |
441 | 6797ec29 | Iustin Pop | if item is not None: |
442 | 6797ec29 | Iustin Pop | if not (isinstance(item, type(Exception)) and |
443 | 6797ec29 | Iustin Pop | issubclass(item, GenericError)):
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444 | 6797ec29 | Iustin Pop | item = None
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445 | 6797ec29 | Iustin Pop | return item
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446 | 6956e9cd | Iustin Pop | |
447 | 6956e9cd | Iustin Pop | |
448 | 6956e9cd | Iustin Pop | def EncodeException(err): |
449 | 6956e9cd | Iustin Pop | """Encodes an exception into a format that L{MaybeRaise} will recognise.
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450 | 6956e9cd | Iustin Pop |
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451 | 6956e9cd | Iustin Pop | The passed L{err} argument will be formatted as a tuple (exception
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452 | 6956e9cd | Iustin Pop | name, arguments) that the MaybeRaise function will recognise.
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453 | 6956e9cd | Iustin Pop |
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454 | 6956e9cd | Iustin Pop | @type err: GenericError child
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455 | 6956e9cd | Iustin Pop | @param err: usually a child of GenericError (but any exception
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456 | 6956e9cd | Iustin Pop | will be accepted)
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457 | 6956e9cd | Iustin Pop | @rtype: tuple
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458 | 6956e9cd | Iustin Pop | @return: tuple of (exception name, exception arguments)
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459 | 6956e9cd | Iustin Pop |
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460 | 6956e9cd | Iustin Pop | """
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461 | 6956e9cd | Iustin Pop | return (err.__class__.__name__, err.args)
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462 | 6956e9cd | Iustin Pop | |
463 | 6956e9cd | Iustin Pop | |
464 | 84f790e6 | Michael Hanselmann | def GetEncodedError(result): |
465 | 84f790e6 | Michael Hanselmann | """If this looks like an encoded Ganeti exception, return it.
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466 | 6956e9cd | Iustin Pop |
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467 | 6956e9cd | Iustin Pop | This function tries to parse the passed argument and if it looks
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468 | 84f790e6 | Michael Hanselmann | like an encoding done by EncodeException, it will return the class
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469 | 84f790e6 | Michael Hanselmann | object and arguments.
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470 | 6956e9cd | Iustin Pop |
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471 | 6956e9cd | Iustin Pop | """
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472 | 6956e9cd | Iustin Pop | tlt = (tuple, list) |
473 | 6956e9cd | Iustin Pop | if (isinstance(result, tlt) and len(result) == 2 and |
474 | 6956e9cd | Iustin Pop | isinstance(result[1], tlt)): |
475 | 6956e9cd | Iustin Pop | # custom ganeti errors
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476 | 84f790e6 | Michael Hanselmann | errcls = GetErrorClass(result[0])
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477 | 84f790e6 | Michael Hanselmann | if errcls:
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478 | 84f790e6 | Michael Hanselmann | return (errcls, tuple(result[1])) |
479 | 84f790e6 | Michael Hanselmann | |
480 | 84f790e6 | Michael Hanselmann | return None |
481 | 84f790e6 | Michael Hanselmann | |
482 | 84f790e6 | Michael Hanselmann | |
483 | 84f790e6 | Michael Hanselmann | def MaybeRaise(result): |
484 | 84f790e6 | Michael Hanselmann | """If this looks like an encoded Ganeti exception, raise it.
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485 | 84f790e6 | Michael Hanselmann |
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486 | 84f790e6 | Michael Hanselmann | This function tries to parse the passed argument and if it looks
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487 | 84f790e6 | Michael Hanselmann | like an encoding done by EncodeException, it will re-raise it.
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488 | 84f790e6 | Michael Hanselmann |
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489 | 84f790e6 | Michael Hanselmann | """
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490 | 84f790e6 | Michael Hanselmann | error = GetEncodedError(result) |
491 | 84f790e6 | Michael Hanselmann | if error:
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492 | 84f790e6 | Michael Hanselmann | (errcls, args) = error |
493 | e687ec01 | Michael Hanselmann | raise errcls(args) |