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docker-python/patches/log.py at rohitgr7-ci · JasonYangCode/docker-python · GitHub
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log.py
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import
logging
import
os
import
google
.
auth
_LOG_TO_FILE_ENV
=
os
.
getenv
(
"KAGGLE_LOG_TO_FILE"
)
class
_LogFormatter
(
logging
.
Formatter
):
"""A logging formatter which truncates long messages."""
_MAX_LOG_LENGTH
=
10000
# Be generous, not to truncate long backtraces.
def
format
(
self
,
record
):
msg
=
super
(
_LogFormatter
,
self
).
format
(
record
)
return
msg
[:
_LogFormatter
.
_MAX_LOG_LENGTH
]
if
msg
else
msg
# TODO(vimota): Clean this up once we're using python 3.8 and can use
# (https://github.com/python/cpython/commit/dde9fdbe453925279ac3d2a6a72102f6f9ef247c)
# Right now, making the logging module display the intended frame's information
# when the logging calls (info, warn, ...) are wrapped (as is the case in our
# Log class) involves fragile logic.
class
_Logger
(
logging
.
Logger
):
# This is a copy of logging.Logger.findCaller with the filename ignore
# set expanded to include the current filename (".../log.py").
# Copyright 2001-2015 by Vinay Sajip. All Rights Reserved.
# License: https://github.com/python/cpython/blob/ce9e62544571e7ade7186697d5dd065fb4c5243f/LICENSE
def
findCaller
(
self
,
stack_info
=
False
):
f
=
logging
.
currentframe
()
f
=
f
.
f_back
rv
=
"(unknown file)"
,
0
,
"(unknown function)"
,
None
while
hasattr
(
f
,
"f_code"
):
co
=
f
.
f_code
filename
=
os
.
path
.
normcase
(
co
.
co_filename
)
if
filename
in
_ignore_srcfiles
:
f
=
f
.
f_back
continue
sinfo
=
None
if
stack_info
:
sio
=
io
.
StringIO
()
sio
.
write
(
'Stack (most recent call last):
\n
'
)
traceback
.
print_stack
(
f
,
file
=
sio
)
sinfo
=
sio
.
getvalue
()
if
sinfo
[
-
1
]
==
'
\n
'
:
sinfo
=
sinfo
[:
-
1
]
sio
.
close
()
rv
=
(
co
.
co_filename
,
f
.
f_lineno
,
co
.
co_name
,
sinfo
)
break
return
rv
_srcfile
=
os
.
path
.
normcase
(
_Logger
.
findCaller
.
__code__
.
co_filename
)
_ignore_srcfiles
=
(
_srcfile
,
logging
.
_srcfile
)
class
Log
:
""" Helper aggregate for all things related to logging activity. """
_GLOBAL_LOG
=
logging
.
getLogger
(
""
)
_initialized
=
False
# These are convenience helpers. For performance, consider saving Log.get_logger() and using that
@
staticmethod
def
critical
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
critical
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
fatal
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
fatal
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
exception
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
exception
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
error
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
error
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
warn
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
warn
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
warning
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
warning
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
debug
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
debug
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
info
(
msg
,
*
args
,
**
kwargs
):
Log
.
_GLOBAL_LOG
.
info
(
msg
,
*
args
,
**
kwargs
)
@
staticmethod
def
set_level
(
loglevel
):
if
isinstance
(
loglevel
,
int
):
Log
.
_GLOBAL_LOG
.
setLevel
(
loglevel
)
return
elif
isinstance
(
loglevel
,
str
):
# idea from https://docs.python.org/3.5/howto/logging.html#logging-to-a-file
numeric_level
=
getattr
(
logging
,
loglevel
.
upper
(),
None
)
if
isinstance
(
numeric_level
,
int
):
Log
.
_GLOBAL_LOG
.
setLevel
(
numeric_level
)
return
raise
ValueError
(
'Invalid log level: %s'
%
loglevel
)
@
staticmethod
def
_static_init
():
if
Log
.
_initialized
:
return
logging
.
setLoggerClass
(
_Logger
)
# The root logger's type is unfortunately (and surprisingly) not affected by
# `setLoggerClass`. Monkey patch it instead. TODO(vimota): Remove this, see the TODO
# associated with _Logger.
logging
.
RootLogger
.
findCaller
=
_Logger
.
findCaller
log_to_file
=
_LOG_TO_FILE_ENV
.
lower
()
in
(
"yes"
,
"true"
,
"t"
,
"1"
)
if
_LOG_TO_FILE_ENV
is
not
None
else
True
if
log_to_file
:
handler
=
logging
.
FileHandler
(
filename
=
'/tmp/kaggle.log'
,
mode
=
'w'
)
else
:
handler
=
logging
.
StreamHandler
()
# ".1s" is for the first letter: http://stackoverflow.com/a/27453084/1869.
format_string
=
"%(asctime)s %(levelname).1s %(process)d %(filename)s:%(lineno)d] %(message)s"
handler
.
setFormatter
(
_LogFormatter
(
format_string
))
logging
.
basicConfig
(
level
=
logging
.
INFO
,
handlers
=
[
handler
])
Log
.
_initialized
=
True
Log
.
_static_init
()
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