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mitogen/mitogen/utils.py

138 lines
4.2 KiB
Python

# Copyright 2017, David Wilson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
import datetime
import logging
import os
import sys
import mitogen
import mitogen.core
import mitogen.master
LOG = logging.getLogger('mitogen')
iteritems = getattr(dict, 'iteritems', dict.items)
if mitogen.core.PY3:
iteritems = dict.items
else:
iteritems = dict.iteritems
def disable_site_packages():
for entry in sys.path[:]:
if 'site-packages' in entry or 'Extras' in entry:
sys.path.remove(entry)
def _formatTime(record, datefmt=None):
dt = datetime.datetime.fromtimestamp(record.created)
return dt.strftime(datefmt)
def log_get_formatter():
datefmt = '%H:%M:%S.%f'
fmt = '%(asctime)s %(levelname).1s %(name)s: %(message)s'
formatter = logging.Formatter(fmt, datefmt)
formatter.formatTime = _formatTime
return formatter
def log_to_file(path=None, io=False, level='INFO'):
log = logging.getLogger('')
if path:
fp = open(path, 'w', 1)
mitogen.core.set_cloexec(fp.fileno())
else:
fp = sys.stderr
level = os.environ.get('MITOGEN_LOG_LEVEL', level).upper()
io = level == 'IO'
if io:
level = 'DEBUG'
logging.getLogger('mitogen.io').setLevel(level)
level = getattr(logging, level, logging.INFO)
log.setLevel(level)
# Prevent accidental duplicate log_to_file() calls from generating
# duplicate output.
for handler_ in reversed(log.handlers):
if getattr(handler_, 'is_mitogen', None):
log.handlers.remove(handler_)
handler = logging.StreamHandler(fp)
handler.is_mitogen = True
handler.formatter = log_get_formatter()
log.handlers.insert(0, handler)
def run_with_router(func, *args, **kwargs):
broker = mitogen.master.Broker()
router = mitogen.master.Router(broker)
try:
return func(router, *args, **kwargs)
finally:
broker.shutdown()
broker.join()
def with_router(func):
def wrapper(*args, **kwargs):
return run_with_router(func, *args, **kwargs)
if mitogen.core.PY3:
wrapper.func_name = func.__name__
else:
wrapper.func_name = func.func_name
return wrapper
PASSTHROUGH = (
int, float, bool,
type(None),
mitogen.core.Context,
mitogen.core.CallError,
mitogen.core.Blob,
mitogen.core.Secret,
)
def cast(obj):
if isinstance(obj, dict):
return dict((cast(k), cast(v)) for k, v in iteritems(obj))
if isinstance(obj, (list, tuple)):
return [cast(v) for v in obj]
if isinstance(obj, PASSTHROUGH):
return obj
if isinstance(obj, mitogen.core.UnicodeType):
return mitogen.core.UnicodeType(obj)
if isinstance(obj, mitogen.core.BytesType):
return mitogen.core.BytesType(obj)
raise TypeError("Cannot serialize: %r: %r" % (type(obj), obj))