80 lines
2.1 KiB
Python
80 lines
2.1 KiB
Python
# testing/config.py
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# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors
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# <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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import collections
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requirements = None
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db = None
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db_url = None
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db_opts = None
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file_config = None
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_current = None
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class Config(object):
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def __init__(self, db, db_opts, options, file_config):
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self.db = db
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self.db_opts = db_opts
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self.options = options
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self.file_config = file_config
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_stack = collections.deque()
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_configs = {}
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@classmethod
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def register(cls, db, db_opts, options, file_config, namespace):
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"""add a config as one of the global configs.
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If there are no configs set up yet, this config also
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gets set as the "_current".
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"""
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cfg = Config(db, db_opts, options, file_config)
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global _current
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if not _current:
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cls.set_as_current(cfg, namespace)
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cls._configs[cfg.db.name] = cfg
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cls._configs[(cfg.db.name, cfg.db.dialect)] = cfg
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cls._configs[cfg.db] = cfg
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@classmethod
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def set_as_current(cls, config, namespace):
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global db, _current, db_url
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_current = config
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db_url = config.db.url
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namespace.db = db = config.db
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@classmethod
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def push_engine(cls, db, namespace):
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assert _current, "Can't push without a default Config set up"
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cls.push(
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Config(
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db, _current.db_opts, _current.options, _current.file_config),
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namespace
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)
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@classmethod
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def push(cls, config, namespace):
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cls._stack.append(_current)
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cls.set_as_current(config, namespace)
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@classmethod
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def reset(cls, namespace):
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if cls._stack:
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cls.set_as_current(cls._stack[0], namespace)
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cls._stack.clear()
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@classmethod
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def all_configs(cls):
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for cfg in set(cls._configs.values()):
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yield cfg
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@classmethod
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def all_dbs(cls):
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for cfg in cls.all_configs():
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yield cfg.db
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