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83 lines
2.5 KiB
83 lines
2.5 KiB
# ADN DMR Peer Server - tests plugin bus
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#
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# Copyright (C) 2026 Rodrigo Pérez, CE5RPY <ce5rpy@qmd.cl>
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#
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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 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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###############################################################################
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"""Plugin bus circuit breaker behaviour."""
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from __future__ import annotations
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import time
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from typing import Any
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from adn_server.application.plugins.application.bus import PluginBus
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class _SlowPlugin:
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name = "slow"
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def on_event(self, event: object) -> None:
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time.sleep(0.002)
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def on_shutdown(self) -> None:
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pass
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class _BrokenPlugin:
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name = "broken"
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def on_event(self, event: object) -> None:
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raise RuntimeError("boom")
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def on_shutdown(self) -> None:
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pass
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def test_plugin_bus_does_not_disable_on_budget_overrun() -> None:
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bus = PluginBus(budget_s=0.0001, max_trips=2)
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plugin = _SlowPlugin()
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bus.register_plugin(plugin)
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for _ in range(5):
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bus.emit("evt")
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assert plugin in bus._plugins # noqa: SLF001
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assert "slow" not in bus._disabled # noqa: SLF001
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def test_plugin_bus_disables_on_exception() -> None:
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bus = PluginBus(max_trips=2)
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plugin = _BrokenPlugin()
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bus.register_plugin(plugin)
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for _ in range(2):
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bus.emit("evt")
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assert plugin not in bus._plugins # noqa: SLF001
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assert "broken" in bus._disabled # noqa: SLF001
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def test_plugin_bus_re_register_after_disable() -> None:
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bus = PluginBus(max_trips=1)
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plugin = _BrokenPlugin()
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bus.register_plugin(plugin)
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bus.emit("evt")
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assert "broken" in bus._disabled # noqa: SLF001
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assert plugin not in bus._plugins # noqa: SLF001
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plugin2 = _BrokenPlugin()
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bus.register_plugin(plugin2)
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assert "broken" not in bus._disabled # noqa: SLF001
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assert plugin2 in bus._plugins # noqa: SLF001
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