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77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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import pytest
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from dummy_stat_logger.dummy_stat_logger import DummyStatLogger
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from vllm.config import VllmConfig
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from vllm.engine.arg_utils import AsyncEngineArgs
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from vllm.v1.engine.async_llm import AsyncLLM
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from vllm.v1.metrics.loggers import load_stat_logger_plugin_factories
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def test_stat_logger_plugin_is_discovered(monkeypatch: pytest.MonkeyPatch):
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with monkeypatch.context() as m:
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m.setenv("VLLM_PLUGINS", "dummy_stat_logger")
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factories = load_stat_logger_plugin_factories()
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assert len(factories) == 1, f"Expected 1 factory, got {len(factories)}"
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assert factories[0] is DummyStatLogger, (
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f"Expected DummyStatLogger class, got {factories[0]}"
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)
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# instantiate and confirm the right type
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vllm_config = VllmConfig()
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instance = factories[0](vllm_config)
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assert isinstance(instance, DummyStatLogger)
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def test_no_plugins_loaded_if_env_empty(monkeypatch: pytest.MonkeyPatch):
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with monkeypatch.context() as m:
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m.setenv("VLLM_PLUGINS", "")
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factories = load_stat_logger_plugin_factories()
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assert factories == []
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def test_invalid_stat_logger_plugin_raises(monkeypatch: pytest.MonkeyPatch):
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def fake_plugin_loader(group: str):
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assert group == "vllm.stat_logger_plugins"
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return {"bad": object()}
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with monkeypatch.context() as m:
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m.setattr(
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"vllm.v1.metrics.loggers.load_plugins_by_group",
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fake_plugin_loader,
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)
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with pytest.raises(
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TypeError,
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match="Stat logger plugin 'bad' must be a subclass of StatLoggerBase",
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):
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load_stat_logger_plugin_factories()
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@pytest.mark.asyncio
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async def test_stat_logger_plugin_integration_with_engine(
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monkeypatch: pytest.MonkeyPatch,
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):
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with monkeypatch.context() as m:
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m.setenv("VLLM_PLUGINS", "dummy_stat_logger")
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engine_args = AsyncEngineArgs(
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model="facebook/opt-125m",
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enforce_eager=True, # reduce test time
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disable_log_stats=True, # disable default loggers
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)
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engine = AsyncLLM.from_engine_args(engine_args=engine_args)
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assert len(engine.logger_manager.stat_loggers) == 2
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assert len(engine.logger_manager.stat_loggers[0].per_engine_stat_loggers) == 1
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assert isinstance(
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engine.logger_manager.stat_loggers[0].per_engine_stat_loggers[0],
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DummyStatLogger,
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)
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engine.shutdown()
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