47 lines
996 B
Python
47 lines
996 B
Python
from __future__ import print_function
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try:
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import _dbapi
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except ImportError:
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import devsup._nullapi as _dbapi
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__all__ = [
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"hooknames",
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"addHook",
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"debugHooks",
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]
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hooknames = _dbapi._hooks.keys()
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def addHook(state, func):
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"""addHook("stats", funcion)
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Add callable to IOC start sequence.
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Callables are run in the reverse of the order in
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which they were added.
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>>> def show():
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... print 'State Occurred'
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>>> addHook("AfterIocRunning", show)
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An additional special hook 'AtIocExit' may be used
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for cleanup actions during IOC shutdown.
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"""
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sid = _dbapi._hooks[state]
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try:
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slist = _dbapi._hooktable[sid]
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except KeyError:
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slist = []
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_dbapi._hooktable[sid] = slist
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slist.append(func)
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def debugHooks():
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"""Install debugging print to hooks
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"""
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for h in hooknames:
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def _showstate(state=h):
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print('Reached state',state)
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addHook(h, _showstate)
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