def app_for_script(script):
"""Returns the WSGI app specified in the input string, or None on failure."""
try:
app, unused_filename, err = wsgi.LoadObject(script)
if err: # wsgi.LoadObject guarantees this is either None or ImportError.
raise err
except ImportError:
# Despite returning an error object sometimes, LoadObject will other times
# just raise an exception. By raising the err object if it exists, we
# catch either.
logging.exception('Failed to import %s', script)
return None
else:
return app_wrapped_in_user_middleware(app)
def app_for_script(script):
"""Returns the WSGI app specified in the input string, or None on failure."""
try:
app, filename, err = wsgi.LoadObject(script) # pylint: disable=unused-variable
except ImportError as e:
# Despite nominally returning an error object, LoadObject will sometimes
# just result in an exception. Since we're already processing the err
# object, we might as well just use that variable to store the exception.
err = e
if err:
# Log the exception but do not reraise.
logging.exception('Failed to import %s: %s', script, err)
return None
else:
return app_wrapped_in_user_middleware(app)
def _AppFrom27StyleScript(script):
"""Returns application given a python2.7 app.yaml script specification.
Args:
script: A script specification from a python27 app.yaml. e.g. my.module.app
Returns:
(app, filename) The application as extracted from the script, and the name
of the file containing the app.
Raises:
ImportError: If the given script specification is malformed.
"""
app, filename, err = wsgi.LoadObject(script)
if err:
raise err
return app, filename