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121 lines
4.1 KiB
Python
121 lines
4.1 KiB
Python
# Copyright 2019, David Wilson
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its contributors
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# may be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# !mitogen: minify_safe
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"""
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On the Mitogen master, this is imported from ``mitogen/__init__.py`` as would
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be expected. On the slave, it is built dynamically during startup.
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"""
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#: Library version as a tuple.
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__version__ = (0, 3, 8, 'dev')
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#: This is :data:`False` in slave contexts. Previously it was used to prevent
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#: re-execution of :mod:`__main__` in single file programs, however that now
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#: happens automatically.
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is_master = True
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#: This is `0` in a master, otherwise it is the master-assigned ID unique to
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#: the slave context used for message routing.
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context_id = 0
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#: This is :data:`None` in a master, otherwise it is the master-assigned ID
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#: unique to the slave's parent context.
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parent_id = None
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#: This is an empty list in a master, otherwise it is a list of parent context
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#: IDs ordered from most direct to least direct.
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parent_ids = []
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import os
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_default_profiling = os.environ.get('MITOGEN_PROFILING') is not None
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del os
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def main(log_level='INFO', profiling=_default_profiling):
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"""
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Convenience decorator primarily useful for writing discardable test
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scripts.
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In the master process, when `func` is defined in the :mod:`__main__`
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module, arranges for `func(router)` to be invoked immediately, with
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:py:class:`mitogen.master.Router` construction and destruction handled just
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as in :py:func:`mitogen.utils.run_with_router`. In slaves, this function
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does nothing.
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:param str log_level:
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Logging package level to configure via
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:py:func:`mitogen.utils.log_to_file`.
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:param bool profiling:
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If :py:data:`True`, equivalent to setting
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:py:attr:`mitogen.master.Router.profiling` prior to router
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construction. This causes ``/tmp`` files to be created everywhere at
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the end of a successful run with :py:mod:`cProfile` output for every
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thread.
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Example:
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::
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import mitogen
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import requests
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def get_url(url):
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return requests.get(url).text
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@mitogen.main()
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def main(router):
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z = router.ssh(hostname='k3')
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print(z.call(get_url, 'https://example.org/')))))
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"""
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def wrapper(func):
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if func.__module__ != '__main__':
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return func
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import mitogen.parent
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import mitogen.utils
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if profiling:
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mitogen.core.enable_profiling()
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mitogen.master.Router.profiling = profiling
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mitogen.utils.log_to_file(level=log_level)
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return mitogen.core._profile_hook(
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'app.main',
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mitogen.utils.run_with_router,
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func,
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)
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return wrapper
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