Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/pip/utils/logging.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 from __future__ import absolute_import
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2
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3 import contextlib
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4 import logging
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5 import logging.handlers
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6 import os
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7
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8 try:
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9 import threading
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10 except ImportError:
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11 import dummy_threading as threading
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12
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13 from pip.compat import WINDOWS
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14
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15 try:
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16 from pip._vendor import colorama
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17 # Lots of different errors can come from this, including SystemError and
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18 # ImportError.
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19 except Exception:
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20 colorama = None
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21
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22
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23 _log_state = threading.local()
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24 _log_state.indentation = 0
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25
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26
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27 @contextlib.contextmanager
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28 def indent_log(num=2):
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29 """
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30 A context manager which will cause the log output to be indented for any
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31 log messages emited inside it.
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32 """
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33 _log_state.indentation += num
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34 yield
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35 _log_state.indentation -= num
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36
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37
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38 def get_indentation():
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39 return _log_state.indentation
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40
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41
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42 class IndentingFormatter(logging.Formatter):
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43
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44 def format(self, record):
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45 """
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46 Calls the standard formatter, but will indent all of the log messages
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47 by our current indentation level.
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48 """
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49 formatted = logging.Formatter.format(self, record)
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50 formatted = "".join([
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51 (" " * get_indentation()) + line
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52 for line in formatted.splitlines(True)
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53 ])
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54 return formatted
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55
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56
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57 def _color_wrap(*colors):
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58 def wrapped(inp):
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59 return "".join(list(colors) + [inp, colorama.Style.RESET_ALL])
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60 return wrapped
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61
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62
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63 class ColorizedStreamHandler(logging.StreamHandler):
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64
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65 # Don't build up a list of colors if we don't have colorama
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66 if colorama:
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67 COLORS = [
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68 # This needs to be in order from highest logging level to lowest.
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69 (logging.ERROR, _color_wrap(colorama.Fore.RED)),
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70 (logging.WARNING, _color_wrap(colorama.Fore.YELLOW)),
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71 ]
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72 else:
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73 COLORS = []
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74
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75 def __init__(self, stream=None):
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76 logging.StreamHandler.__init__(self, stream)
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77
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78 if WINDOWS and colorama:
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79 self.stream = colorama.AnsiToWin32(self.stream)
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80
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81 def should_color(self):
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82 # Don't colorize things if we do not have colorama
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83 if not colorama:
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84 return False
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85
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86 real_stream = (
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87 self.stream if not isinstance(self.stream, colorama.AnsiToWin32)
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88 else self.stream.wrapped
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89 )
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90
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91 # If the stream is a tty we should color it
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92 if hasattr(real_stream, "isatty") and real_stream.isatty():
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93 return True
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94
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95 # If we have an ASNI term we should color it
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96 if os.environ.get("TERM") == "ANSI":
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97 return True
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98
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99 # If anything else we should not color it
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100 return False
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101
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102 def format(self, record):
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103 msg = logging.StreamHandler.format(self, record)
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104
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105 if self.should_color():
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106 for level, color in self.COLORS:
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107 if record.levelno >= level:
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108 msg = color(msg)
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109 break
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110
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111 return msg
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112
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113
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114 class BetterRotatingFileHandler(logging.handlers.RotatingFileHandler):
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115
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116 def _open(self):
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117 # Ensure the directory exists
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118 if not os.path.exists(os.path.dirname(self.baseFilename)):
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119 os.makedirs(os.path.dirname(self.baseFilename))
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120
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121 return logging.handlers.RotatingFileHandler._open(self)
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122
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123
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124 class MaxLevelFilter(logging.Filter):
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125
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126 def __init__(self, level):
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127 self.level = level
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128
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129 def filter(self, record):
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130 return record.levelno < self.level