a4768df0ca
This means that we have a really convenient way to make sure that you have a context/request that threads its way through the application, where everything needed gets "shut down" appropriately by the end. You always get a context object via a context manager! And by the time you're done with it, things should be cleaned up.
97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import code
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from mediagoblin import mg_globals
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from mediagoblin.gmg_commands import util as commands_util
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from mediagoblin.tools.transition import DISABLE_GLOBALS
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def shell_parser_setup(subparser):
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subparser.add_argument(
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'--ipython', help='Use ipython',
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action="store_true")
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if DISABLE_GLOBALS:
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SHELL_BANNER = (
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"GNU MediaGoblin shell!\n"
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"----------------------\n"
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"Available vars:\n"
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" - app: instantiated mediagoblin application\n"
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" - db: database session\n"
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" - ctx: context object\n")
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else:
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SHELL_BANNER = (
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"GNU MediaGoblin shell!\n"
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"----------------------\n"
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"Available vars:\n"
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" - app: instantiated mediagoblin application\n"
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" - mg_globals: mediagoblin.globals\n"
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" - db: database instance\n"
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" - ctx: context object\n")
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def py_shell(**user_namespace):
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"""
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Run a shell using normal python shell.
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"""
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code.interact(
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banner=SHELL_BANNER,
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local=user_namespace)
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def ipython_shell(**user_namespace):
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"""
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Run a shell for the user using ipython. Return False if there is no IPython
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"""
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try:
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from IPython import embed
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except:
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return False
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embed(
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banner1=SHELL_BANNER,
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user_ns=user_namespace)
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return True
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def shell(args):
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"""
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Setup a shell for the user either a normal Python shell or an IPython one
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"""
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app = commands_util.setup_app(args)
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def run_shell(db, ctx):
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user_namespace = {
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'mg_globals': mg_globals,
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'app': app,
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'db': db,
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"ctx": ctx}
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if args.ipython:
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ipython_shell(**user_namespace)
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else:
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# Try ipython_shell first and fall back if not available
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if not ipython_shell(**user_namespace):
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py_shell(**user_namespace)
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with app.gen_context() as ctx:
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db = ctx.db
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run_shell(db, ctx)
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