[py3] Pass bytes as "msg" to smtplib.SMTP.sendmail()
When passing a unicode string to smtplib.SMTP.sendmail() as "msg"
argument, there is an implicit bytes encoding using "ascii" encoding in
python3. Of course this does not work if the string contains non-ASCII
characters. In fact, config's sendmails method intent to pass bytes to
smtplib.SMTP.sendmail() as it uses msg.as_string() method.
Unfortunately, in python3, this method returns a unicode string whereas
it returns a bytes string in python2; we thus fix this by calling
as_bytes() method on python3.
As there is no "as_bytes" method in python2, we need to handle python2
compatibility by hand and either call as_string() or as_bytes().
In testlib, where we mock smtplib.SMTP, we need to keep the "msg"
argument of Email class (defined in testlib as well) a unicode string.
Otherwise, it fails to be parsed by email.message_from_string() (from
stdlib) if it is bytes on python3.
# copyright 2017 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# copyright 2014-2016 UNLISH S.A.S. (Montpellier, FRANCE), all rights reserved.
#
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
""" Tools for profiling.
See :ref:`profiling`."""
from __future__ import print_function
import cProfile
import itertools
from pyramid.view import view_config
@view_config(route_name='profile_ping')
def ping(request):
""" View that handle '/_profile/ping'
It simply reply 'ping', without requiring connection to the repository.
It is a useful as a comparison point to evaluate the actual overhead of
more costly views.
"""
request.response.text = u'pong'
return request.response
@view_config(route_name='profile_cnx')
def cnx(request):
""" View that handle '/_profile/cnx'
Same as :func:`ping`, but it first ask for a connection to the repository.
Useful to evaluate the overhead of opening a connection.
"""
request.cw_cnx
request.response.text = u'pong'
return request.response
def wsgi_profile(app, filename='program.prof', dump_every=50):
""" A WSGI middleware for profiling
It enable the profiler before passing the request to the underlying
application, and disable it just after.
The stats will be dumped after ``dump_every`` requests
:param filename: The filename to dump the stats to.
:param dump_every: Number of requests after which to dump the stats.
"""
profile = cProfile.Profile()
counter = itertools.count(1)
def application(environ, start_response):
profile.enable()
try:
return app(environ, start_response)
finally:
profile.disable()
if not counter.next() % dump_every:
print("Dump profile stats to %s" % filename)
profile.create_stats()
profile.dump_stats(filename)
return application