root / kamaki / cli / errors.py @ 9986e569
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1 | c9e706b2 | Stavros Sachtouris | # Copyright 2011 GRNET S.A. All rights reserved.
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2 | c9e706b2 | Stavros Sachtouris | #
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3 | c9e706b2 | Stavros Sachtouris | # Redistribution and use in source and binary forms, with or
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4 | c9e706b2 | Stavros Sachtouris | # without modification, are permitted provided that the following
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5 | c9e706b2 | Stavros Sachtouris | # conditions are met:
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6 | c9e706b2 | Stavros Sachtouris | #
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7 | c9e706b2 | Stavros Sachtouris | # 1. Redistributions of source code must retain the above
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8 | c9e706b2 | Stavros Sachtouris | # copyright notice, this list of conditions and the following
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9 | c9e706b2 | Stavros Sachtouris | # disclaimer.
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10 | c9e706b2 | Stavros Sachtouris | #
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11 | c9e706b2 | Stavros Sachtouris | # 2. Redistributions in binary form must reproduce the above
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12 | c9e706b2 | Stavros Sachtouris | # copyright notice, this list of conditions and the following
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13 | c9e706b2 | Stavros Sachtouris | # disclaimer in the documentation and/or other materials
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14 | c9e706b2 | Stavros Sachtouris | # provided with the distribution.
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15 | c9e706b2 | Stavros Sachtouris | #
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16 | c9e706b2 | Stavros Sachtouris | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | c9e706b2 | Stavros Sachtouris | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | c9e706b2 | Stavros Sachtouris | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | c9e706b2 | Stavros Sachtouris | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | c9e706b2 | Stavros Sachtouris | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | c9e706b2 | Stavros Sachtouris | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | c9e706b2 | Stavros Sachtouris | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | c9e706b2 | Stavros Sachtouris | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | c9e706b2 | Stavros Sachtouris | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | c9e706b2 | Stavros Sachtouris | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | c9e706b2 | Stavros Sachtouris | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | c9e706b2 | Stavros Sachtouris | # POSSIBILITY OF SUCH DAMAGE.
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28 | c9e706b2 | Stavros Sachtouris | #
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29 | c9e706b2 | Stavros Sachtouris | # The views and conclusions contained in the software and
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30 | c9e706b2 | Stavros Sachtouris | # documentation are those of the authors and should not be
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31 | c9e706b2 | Stavros Sachtouris | # interpreted as representing official policies, either expressed
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32 | c9e706b2 | Stavros Sachtouris | # or implied, of GRNET S.A.
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33 | c9e706b2 | Stavros Sachtouris | |
34 | 9986e569 | Stavros Sachtouris | from kamaki.logger import get_logger |
35 | 6069b53b | Stavros Sachtouris | |
36 | 9986e569 | Stavros Sachtouris | log = get_logger('kamaki.cli')
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37 | de4f08ef | Stavros Sachtouris | |
38 | fd5db045 | Stavros Sachtouris | |
39 | c9e706b2 | Stavros Sachtouris | class CLIError(Exception): |
40 | c1558584 | Stavros Sachtouris | |
41 | 0238c167 | Stavros Sachtouris | def __init__(self, message, details=[], importance=0): |
42 | c9e706b2 | Stavros Sachtouris | """
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43 | 0238c167 | Stavros Sachtouris | @message is the main message of the Error
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44 | 0238c167 | Stavros Sachtouris | @detauls is a list of previous errors
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45 | 0238c167 | Stavros Sachtouris | @importance of the output for the user
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46 | 0238c167 | Stavros Sachtouris | Suggested values: 0, 1, 2, 3
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47 | 0238c167 | Stavros Sachtouris | """
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48 | 6069b53b | Stavros Sachtouris | message += '' if message and message[-1] == '\n' else '\n' |
49 | 0238c167 | Stavros Sachtouris | super(CLIError, self).__init__(message) |
50 | c1558584 | Stavros Sachtouris | self.details = list(details) if isinstance(details, list)\ |
51 | 0238c167 | Stavros Sachtouris | else [] if details is None else ['%s' % details] |
52 | 0238c167 | Stavros Sachtouris | try:
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53 | 0238c167 | Stavros Sachtouris | self.importance = int(importance) |
54 | 0238c167 | Stavros Sachtouris | except ValueError: |
55 | 0238c167 | Stavros Sachtouris | self.importance = 0 |
56 | c9e706b2 | Stavros Sachtouris | |
57 | fd5db045 | Stavros Sachtouris | |
58 | c9e706b2 | Stavros Sachtouris | class CLISyntaxError(CLIError): |
59 | 0238c167 | Stavros Sachtouris | def __init__(self, message='Syntax Error', details=[], importance=1): |
60 | 0238c167 | Stavros Sachtouris | super(CLISyntaxError, self).__init__(message, details, importance) |
61 | fd5db045 | Stavros Sachtouris | |
62 | c9e706b2 | Stavros Sachtouris | |
63 | c9e706b2 | Stavros Sachtouris | class CLIUnknownCommand(CLIError): |
64 | 0238c167 | Stavros Sachtouris | def __init__(self, message='Unknown Command', details=[], importance=1): |
65 | 0238c167 | Stavros Sachtouris | super(CLIUnknownCommand, self).__init__(message, details, importance) |
66 | fd5db045 | Stavros Sachtouris | |
67 | c9e706b2 | Stavros Sachtouris | |
68 | 926d6863 | Stavros Sachtouris | class CLICmdSpecError(CLIError): |
69 | de73876b | Stavros Sachtouris | def __init__( |
70 | 24ff0a35 | Stavros Sachtouris | self, message='Command Specification Error', |
71 | 24ff0a35 | Stavros Sachtouris | details=[], importance=0):
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72 | 0238c167 | Stavros Sachtouris | super(CLICmdSpecError, self).__init__(message, details, importance) |
73 | fd5db045 | Stavros Sachtouris | |
74 | c9e706b2 | Stavros Sachtouris | |
75 | 017d37ce | Stavros Sachtouris | class CLICmdIncompleteError(CLICmdSpecError): |
76 | de73876b | Stavros Sachtouris | def __init__( |
77 | 24ff0a35 | Stavros Sachtouris | self, message='Incomplete Command Error', |
78 | 24ff0a35 | Stavros Sachtouris | details=[], importance=1):
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79 | 0238c167 | Stavros Sachtouris | super(CLICmdSpecError, self).__init__(message, details, importance) |
80 | fd5db045 | Stavros Sachtouris | |
81 | 017d37ce | Stavros Sachtouris | |
82 | 6069b53b | Stavros Sachtouris | def raiseCLIError(err, message='', importance=0, details=[]): |
83 | 83ba5545 | Stavros Sachtouris | """
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84 | 83ba5545 | Stavros Sachtouris | :param err: (Exception) the original error message, if None, a new
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85 | 83ba5545 | Stavros Sachtouris | CLIError is born which is conceptually bind to raiser
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86 | 83ba5545 | Stavros Sachtouris |
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87 | 83ba5545 | Stavros Sachtouris | :param message: (str) a custom error message that overrides err's
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88 | 83ba5545 | Stavros Sachtouris |
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89 | 83ba5545 | Stavros Sachtouris | :param importance: (int) instruction to called application (e.g. for
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90 | 83ba5545 | Stavros Sachtouris | coloring printed error messages)
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91 | 83ba5545 | Stavros Sachtouris |
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92 | 83ba5545 | Stavros Sachtouris | :param details: (list) various information on the error
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93 | 83ba5545 | Stavros Sachtouris |
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94 | 83ba5545 | Stavros Sachtouris | :raises CLIError: it is the purpose of this method
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95 | 83ba5545 | Stavros Sachtouris | """
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96 | 6069b53b | Stavros Sachtouris | from traceback import format_stack |
97 | c1558584 | Stavros Sachtouris | |
98 | 83ba5545 | Stavros Sachtouris | stack = ['%s' % type(err)] if err else ['<kamaki.cli.errors.CLIError>'] |
99 | 3667e969 | Stavros Sachtouris | stack += format_stack() |
100 | 3667e969 | Stavros Sachtouris | try:
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101 | 3667e969 | Stavros Sachtouris | stack = [e for e in stack if e != stack[1]] |
102 | 3667e969 | Stavros Sachtouris | except KeyError: |
103 | 9986e569 | Stavros Sachtouris | log.debug('\n < '.join(stack))
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104 | 83ba5545 | Stavros Sachtouris | |
105 | 3e0f2e53 | Stavros Sachtouris | details = ['%s' % details] if not isinstance(details, list)\ |
106 | 3e0f2e53 | Stavros Sachtouris | else list(details) |
107 | c1558584 | Stavros Sachtouris | details += getattr(err, 'details', []) |
108 | 6069b53b | Stavros Sachtouris | |
109 | 83ba5545 | Stavros Sachtouris | if err:
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110 | 83ba5545 | Stavros Sachtouris | origerr = '%s' % err
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111 | 83ba5545 | Stavros Sachtouris | origerr = origerr if origerr else '%s' % type(err) |
112 | 83ba5545 | Stavros Sachtouris | else:
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113 | 3667e969 | Stavros Sachtouris | origerr = stack[0]
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114 | 6069b53b | Stavros Sachtouris | |
115 | a517ff50 | Stavros Sachtouris | message = '%s' % (message if message else origerr) |
116 | 6069b53b | Stavros Sachtouris | |
117 | 6069b53b | Stavros Sachtouris | try:
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118 | dc6fc88e | Stavros Sachtouris | status = err.status or err.errno
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119 | 6069b53b | Stavros Sachtouris | except AttributeError: |
120 | 6069b53b | Stavros Sachtouris | status = None
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121 | 6069b53b | Stavros Sachtouris | |
122 | 3667e969 | Stavros Sachtouris | if origerr not in details + [message]: |
123 | 3667e969 | Stavros Sachtouris | details.append(origerr) |
124 | 6069b53b | Stavros Sachtouris | |
125 | 3667e969 | Stavros Sachtouris | message += '' if message and message[-1] == '\n' else '\n' |
126 | 6069b53b | Stavros Sachtouris | if status:
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127 | 6069b53b | Stavros Sachtouris | message = '(%s) %s' % (err.status, message)
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128 | 0238c167 | Stavros Sachtouris | try:
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129 | 0238c167 | Stavros Sachtouris | status = int(err.status)
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130 | 0238c167 | Stavros Sachtouris | except ValueError: |
131 | 6069b53b | Stavros Sachtouris | raise CLIError(message, details, importance)
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132 | a03ade9e | Stavros Sachtouris | importance = importance if importance else status // 100 |
133 | c1558584 | Stavros Sachtouris | importance = getattr(err, 'importance', importance) |
134 | 6069b53b | Stavros Sachtouris | raise CLIError(message, details, importance) |