from __future__ import annotations
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import typing as t
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import warnings
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from blinker import Namespace
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# This namespace is only for signals provided by Flask itself.
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_signals = Namespace()
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template_rendered = _signals.signal("template-rendered")
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before_render_template = _signals.signal("before-render-template")
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request_started = _signals.signal("request-started")
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request_finished = _signals.signal("request-finished")
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request_tearing_down = _signals.signal("request-tearing-down")
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got_request_exception = _signals.signal("got-request-exception")
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appcontext_tearing_down = _signals.signal("appcontext-tearing-down")
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appcontext_pushed = _signals.signal("appcontext-pushed")
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appcontext_popped = _signals.signal("appcontext-popped")
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message_flashed = _signals.signal("message-flashed")
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def __getattr__(name: str) -> t.Any:
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if name == "signals_available":
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warnings.warn(
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"The 'signals_available' attribute is deprecated and will be removed in"
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" Flask 2.4. Signals are always available.",
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DeprecationWarning,
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stacklevel=2,
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)
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return True
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raise AttributeError(name)
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