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# Copyright 2019, 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.
# !mitogen: minify_safe
"""
On the Mitogen master, this is imported from ``mitogen/__init__.py`` as would
be expected. On the slave, it is built dynamically during startup.
"""
#: Library version as a tuple.
__version__ = (0, 3, 25, 'a', 2)
#: This is :data:`False` in slave contexts. Previously it was used to prevent
#: re-execution of :mod:`__main__` in single file programs, however that now
#: happens automatically.
is_master = True
#: This is `0` in a master, otherwise it is the master-assigned ID unique to
#: the slave context used for message routing.
context_id = 0
#: This is :data:`None` in a master, otherwise it is the master-assigned ID
#: unique to the slave's parent context.
parent_id = None
#: This is an empty list in a master, otherwise it is a list of parent context
#: IDs ordered from most direct to least direct.
parent_ids = []
import os
_default_profiling = os.environ.get('MITOGEN_PROFILING') is not None
del os
def main(log_level='INFO', profiling=_default_profiling):
"""
Convenience decorator primarily useful for writing discardable test
scripts.
In the master process, when `func` is defined in the :mod:`__main__`
module, arranges for `func(router)` to be invoked immediately, with
:py:class:`mitogen.master.Router` construction and destruction handled just
as in :py:func:`mitogen.utils.run_with_router`. In slaves, this function
does nothing.
:param str log_level:
Logging package level to configure via
:py:func:`mitogen.utils.log_to_file`.
:param bool profiling:
If :py:data:`True`, equivalent to setting
:py:attr:`mitogen.master.Router.profiling` prior to router
construction. This causes ``/tmp`` files to be created everywhere at
the end of a successful run with :py:mod:`cProfile` output for every
thread.
Example:
::
import mitogen
import requests
def get_url(url):
return requests.get(url).text
@mitogen.main()
def main(router):
z = router.ssh(hostname='k3')
print(z.call(get_url, 'https://example.org/')))))
"""
def wrapper(func):
if func.__module__ != '__main__':
return func
import mitogen.parent
import mitogen.utils
if profiling:
mitogen.core.enable_profiling()
mitogen.master.Router.profiling = profiling
mitogen.utils.log_to_file(level=log_level)
return mitogen.core._profile_hook(
'app.main',
mitogen.utils.run_with_router,
func,
)
return wrapper
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