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:type namespace: str
:param check_func: Function to determine which extensions to load.
:type check_func: callable
:param invoke_on_load: Boolean controlling whether to invoke the
object returned by the entry point after the driver is loaded.
:type invoke_on_load: bool
:param invoke_args: Positional arguments to pass when invoking
the object returned by the entry point. Only used if invoke_on_load
is True.
:type invoke_args: tuple
:param invoke_kwds: Named arguments to pass when invoking
the object returned by the entry point. Only used if invoke_on_load
is True.
:type invoke_kwds: dict
:param propagate_map_exceptions: Boolean controlling whether exceptions
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instance. filter_func() should return True if the extension
should be invoked for the input arguments.
The signature for func() should be::
def func(ext, *args, **kwds):
pass
The first argument to func(), 'ext', is the
:class:`~stevedore.extension.Extension` instance.
Exceptions raised from within func() are propagated up and
processing stopped if self.propagate_map_exceptions is True,
otherwise they are logged and ignored.
:param filter_func: Callable to test each extension.
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and processing stopped if self.propagate_map_exceptions is True,
otherwise they are logged and ignored.
.. versionadded:: 0.12
:param filter_func: Callable to test each extension.
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indicating that the extension should be loaded and made available
and ``False`` indicating that the extension should be ignored.
:param namespace: The namespace for the entry points.
:type namespace: str
:param check_func: Function to determine which extensions to load.
:type check_func: callable
:param invoke_on_load: Boolean controlling whether to invoke the
object returned by the entry point after the driver is loaded.
:type invoke_on_load: bool
:param invoke_args: Positional arguments to pass when invoking
the object returned by the entry point. Only used if invoke_on_load
is True.
:type invoke_args: tuple
:param invoke_kwds: Named arguments to pass when invoking
the object returned by the entry point. Only used if invoke_on_load
is True.
:type invoke_kwds: dict
:param propagate_map_exceptions: Boolean controlling whether exceptions
are propagated up through the map call or whether they are logged and
then ignored
:type invoke_on_load: bool
:param on_load_failure_callback: Callback function that will be called when
an entrypoint can not be loaded. The arguments that will be provided
when this is called (when an entrypoint fails to load) are
(manager, entrypoint, exception)
:type on_load_failure_callback: function
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:class:`~stevedore.extension.Extension` instance.
Exceptions raised from within func() are propagated up and
processing stopped if self.propagate_map_exceptions is True,
otherwise they are logged and ignored.
:param names: List or set of name(s) of extension(s) to invoke.
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`lambda x: x.obj.method_name()`
while being more convenient.
Exceptions raised from within the called method are propagated up
and processing stopped if self.propagate_map_exceptions is True,
otherwise they are logged and ignored.
.. versionadded:: 0.12
:param names: List or set of name(s) of extension(s) to invoke.
:param method_name: The extension method name
to call for each extension.
:param args: Variable arguments to pass to method
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