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"""
Command line interface (CLI)
============================
If you don't need to add :ref:`websockets <aiohttp-web-websockets>` or
:ref:`async request handlers <aiohttp-web-handler>` to your app, but still want to run your WSGI app on the
:mod:`asyncio` event loop, :mod:`aiohttp_wsgi` provides a simple command line interface.
Example usage
-------------
Serve a WSGI application called ``application``, located in the ``your_project.wsgi`` module:
.. code:: bash
aiohttp-wsgi-serve your_project.wsgi:application
Serve a WSGI application and include a static file directory.
.. code:: bash
aiohttp-wsgi-serve your_project.wsgi:application --static /static=./static
Command reference
-----------------
You can view this reference at any time with ``aiohttp-wsgi-serve --help``.
.. code:: bash
{help}
.. include:: /_include/links.rst
"""
import argparse
import logging
import os
import sys
from importlib import import_module
from typing import Any, Callable, Tuple
import aiohttp_wsgi
from aiohttp_wsgi.wsgi import serve, DEFAULTS, HELP
logger = logging.getLogger(__name__)
parser = argparse.ArgumentParser(
prog="aiohttp-wsgi-serve",
description="Run a WSGI application.",
)
def add_argument(name: str, *aliases: str, **kwargs: Any) -> None:
varname = name.strip("-").replace("-", "_")
# Format help.
kwargs.setdefault("help", HELP.get(varname, "").replace("``", ""))
assert kwargs["help"]
# Parse action.
kwargs.setdefault("action", "store")
if kwargs["action"] in ("append", "count"):
kwargs["help"] += " Can be specified multiple times."
if kwargs["action"] == "count":
kwargs.setdefault("default", 0)
if kwargs["action"] in ("append", "store"):
kwargs.setdefault("default", DEFAULTS.get(varname))
kwargs.setdefault("type", type(kwargs["default"]))
assert not isinstance(None, kwargs["type"])
parser.add_argument(name, *aliases, **kwargs)
add_argument(
"application",
metavar="module:application",
type=str,
)
add_argument(
"--host",
type=str,
action="append",
)
add_argument(
"--port",
"-p",
)
add_argument(
"--unix-socket",
type=str,
)
add_argument(
"--unix-socket-perms",
)
add_argument(
"--backlog",
)
add_argument(
"--static",
action="append",
default=[],
type=str,
help=(
"Static route mappings in the form 'path=directory'. "
"`path` must start with a slash, but not end with a slash."
),
)
add_argument(
"--static-cors",
type=str,
)
add_argument(
"--script-name",
)
add_argument(
"--url-scheme",
type=str,
)
add_argument(
"--threads",
)
add_argument(
"--inbuf-overflow",
)
add_argument(
"--max-request-body-size",
)
add_argument(
"--shutdown-timeout",
)
add_argument(
"--verbose",
"-v",
action="count",
help="Increase verbosity.",
)
add_argument(
"--quiet",
"-q",
action="count",
help="Decrease verbosity.",
)
add_argument(
"--version",
action="version",
help="Display version information.",
version=f"aiohttp-wsgi v{aiohttp_wsgi.__version__}",
)
def import_func(func: str) -> Callable:
assert ":" in func, f"{func!r} should have format 'module:callable'"
module_name, func_name = func.split(":", 1)
module = import_module(module_name)
func = getattr(module, func_name)
return func
def parse_static_item(static_item: str) -> Tuple[str, str]:
assert "=" in static_item, f"{static_item!r} should have format 'path=directory'"
return tuple(static_item.split("=", 1)) # type: ignore
def main() -> None:
sys.path.insert(0, os.getcwd())
# Parse the args.
kwargs = vars(parser.parse_args(sys.argv[1:]))
application = import_func(kwargs.pop("application"))
static = list(map(parse_static_item, kwargs.pop("static")))
# Set up logging.
verbosity = (kwargs.pop("verbose") - kwargs.pop("quiet")) * 10
logging.basicConfig(level=max(logging.ERROR - verbosity, logging.DEBUG), format="%(message)s")
logging.getLogger("aiohttp").setLevel(max(logging.INFO - verbosity, logging.DEBUG))
logger.setLevel(max(logging.INFO - verbosity, logging.DEBUG))
# Serve!
serve(application, static=static, **kwargs)
if __debug__:
import textwrap
__doc__ = __doc__.format(help=textwrap.indent(parser.format_help(), " "), **HELP)
|
