1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2016-2017 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
"""Bunch of useful decorators"""
__authors__ = ["Jerome Kieffer", "H. Payno", "P. Knobel"]
__license__ = "MIT"
__date__ = "18/12/2020"
import logging
import functools
import traceback
import re
from .. import _version
depreclog = logging.getLogger("fabio.DEPRECATION")
deprecache = set([])
_CACHE_VERSIONS = {}
_PATTERN = re.compile(r"(\d+)\.(\d+)\.(\d+)(\w+)?$")
def hexversion_fromstring(string):
"""Calculate the hexadecimal version number from a string:
"""
if string is not None:
result = _PATTERN.match(string)
if result is None:
raise ValueError("'%s' is not a valid version" % string)
result = result.groups()
major, minor, micro = int(result[0]), int(result[1]), int(result[2])
releaselevel = result[3]
if releaselevel is None:
releaselevel = 0
return _version.calc_hexversion(major, minor, micro, releaselevel, serial=0)
def deprecated(func=None, reason=None, replacement=None, since_version=None,
only_once=True, skip_backtrace_count=1,
deprecated_since=None):
"""
Decorator that deprecates the use of a function
:param str reason: Reason for deprecating this function
(e.g. "feature no longer provided",
:param str replacement: Name of replacement function (if the reason for
deprecating was to rename the function)
:param str since_version: First *fabio* version for which the function was
deprecated (e.g. "0.5.0").
:param bool only_once: If true, the deprecation warning will only be
generated one time. Default is true.
:param int skip_backtrace_count: Amount of last backtrace to ignore when
logging the backtrace
:param Union[int,str] deprecated_since: If provided, log it as warning
since a version of the library, else log it as debug
"""
def decorator(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
name = func.__name__
deprecated_warning(type_='Function',
name=name,
reason=reason,
replacement=replacement,
since_version=since_version,
only_once=only_once,
skip_backtrace_count=skip_backtrace_count,
deprecated_since=deprecated_since)
return func(*args, **kwargs)
return wrapper
if func is not None:
return decorator(func)
return decorator
def deprecated_warning(type_, name, reason=None, replacement=None,
since_version=None, only_once=True,
skip_backtrace_count=0,
deprecated_since=None):
"""
Function to log a deprecation warning
:param str type_: Nature of the object to be deprecated:
"Module", "Function", "Class" ...
:param name: Object name.
:param str reason: Reason for deprecating this function
(e.g. "feature no longer provided",
:param str replacement: Name of replacement function (if the reason for
deprecating was to rename the function)
:param str since_version: First *fabio* version for which the function was
deprecated (e.g. "0.5.0").
:param bool only_once: If true, the deprecation warning will only be
generated one time for each different call locations. Default is true.
:param int skip_backtrace_count: Amount of last backtrace to ignore when
logging the backtrace
:param Union[int,str] deprecated_since: If provided, log the deprecation
as warning since a version of the library, else log it as debug.
"""
if not depreclog.isEnabledFor(logging.WARNING):
# Avoid computation when it is not logged
return
msg = "%s %s is deprecated"
if since_version is not None:
msg += " since fabio version %s" % since_version
msg += "."
if reason is not None:
msg += " Reason: %s." % reason
if replacement is not None:
msg += " Use '%s' instead." % replacement
msg += "\n%s"
limit = 2 + skip_backtrace_count
backtrace = "".join(traceback.format_stack(limit=limit)[0])
backtrace = backtrace.rstrip()
if only_once:
data = (msg, type_, name, backtrace)
if data in deprecache:
return
else:
deprecache.add(data)
if deprecated_since is not None:
if isinstance(deprecated_since, str):
if deprecated_since not in _CACHE_VERSIONS:
hexversion = hexversion_fromstring(string=deprecated_since)
_CACHE_VERSIONS[deprecated_since] = hexversion
deprecated_since = hexversion
else:
deprecated_since = _CACHE_VERSIONS[deprecated_since]
log_as_debug = _version.hexversion < deprecated_since
else:
log_as_debug = False
if log_as_debug:
depreclog.debug(msg, type_, name, backtrace)
else:
depreclog.warning(msg, type_, name, backtrace)
|
