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match run command behavior in app.run

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output extra server information
handle env var changed by load_dotenv
enable threading by default
This commit is contained in:
David Lord 2018-01-10 12:02:13 -08:00
parent 2433522d29
commit 3738f7ff99
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GPG key ID: 7A1C87E3F5BC42A8
2 changed files with 58 additions and 39 deletions
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27
flask/app.py
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@ -864,21 +864,34 @@ class Flask(_PackageBoundObject):
If installed, python-dotenv will be used to load environment
variables from :file:`.env` and :file:`.flaskenv` files.
.. versionchanged:: 0.10
The default port is now picked from the ``SERVER_NAME`` variable.
If set, the :envvar:`FLASK_ENV` and :envvar:`FLASK_DEBUG`
environment variables will override :attr:`env` and
:attr:`debug`.
Threaded mode is enabled by default.
.. versionchanged:: 0.10
The default port is now picked from the ``SERVER_NAME``
variable.
"""
# Change this into a no-op if the server is invoked from the
# command line. Have a look at cli.py for more information.
# command line. Have a look at cli.py for more information.
if os.environ.get('FLASK_RUN_FROM_CLI') == 'true':
from .debughelpers import explain_ignored_app_run
explain_ignored_app_run()
return
if load_dotenv:
from flask.cli import load_dotenv
load_dotenv()
cli.load_dotenv()
# if set, let env vars override previous values
if 'FLASK_ENV' in os.environ:
self.env = get_env()
self.debug = get_debug_flag()
elif 'FLASK_DEBUG' in os.environ:
self.debug = get_debug_flag()
# debug passed to method overrides all other sources
if debug is not None:
self.debug = bool(debug)
@ -892,8 +905,12 @@ class Flask(_PackageBoundObject):
host = host or sn_host or _host
port = int(port or sn_port or _port)
options.setdefault('use_reloader', self.debug)
options.setdefault('use_debugger', self.debug)
options.setdefault('threaded', True)
cli.show_server_banner(self.env, self.debug, self.name)
from werkzeug.serving import run_simple