82 lines
2.7 KiB
Python
82 lines
2.7 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 logging
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from collections.abc import Callable
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from typing import Any
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import vllm.envs as envs
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logger = logging.getLogger(__name__)
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# Default plugins group will be loaded in all processes (process0, engine core
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# process and worker processes).
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OMNI_DEFAULT_PLUGINS_GROUP = "vllm_omni.general_plugins"
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# Platform plugins group will be loaded in all processes when
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# `vllm_omni.platforms.current_omni_platform` is called and the value not
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# initialized.
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OMNI_PLATFORM_PLUGINS_GROUP = "vllm_omni.platform_plugins"
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# Make sure one process only loads plugins once.
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omni_plugins_loaded = False
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def load_omni_plugins_by_group(group: str) -> dict[str, Callable[[], Any]]:
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from importlib.metadata import entry_points
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allowed_plugins = envs.VLLM_PLUGINS
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discovered_plugins = entry_points(group=group)
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if len(discovered_plugins) == 0:
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logger.debug("No plugins for group %s found.", group)
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return {}
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# Check if the only discovered plugin is the default one.
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is_default_group = group == OMNI_DEFAULT_PLUGINS_GROUP
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# Use INFO for non-default groups and DEBUG for the default group.
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log_level = logger.debug if is_default_group else logger.info
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log_level("Available plugins for group %s:", group)
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for plugin in discovered_plugins:
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log_level("- %s -> %s", plugin.name, plugin.value)
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if allowed_plugins is None:
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log_level("All plugins in this group will be loaded. Set `VLLM_PLUGINS` to control which plugins to load.")
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plugins: dict[str, Callable[[], Any]] = {}
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for plugin in discovered_plugins:
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if allowed_plugins is None or plugin.name in allowed_plugins:
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if allowed_plugins is not None:
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log_level("Loading plugin %s", plugin.name)
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try:
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func = plugin.load()
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plugins[plugin.name] = func
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except Exception:
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logger.exception("Failed to load plugin %s", plugin.name)
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return plugins
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def load_omni_general_plugins() -> None:
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"""WARNING: plugins can be loaded for multiple times in different
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processes. They should be designed in a way that they can be loaded
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multiple times without causing issues.
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"""
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global omni_plugins_loaded
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if omni_plugins_loaded:
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return
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omni_plugins_loaded = True
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plugins = load_omni_plugins_by_group(group=OMNI_DEFAULT_PLUGINS_GROUP)
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# General plugins: we only need to execute the loaded functions.
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for func in plugins.values():
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func()
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__all__ = [
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"load_omni_general_plugins",
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"OMNI_DEFAULT_PLUGINS_GROUP",
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"OMNI_PLATFORM_PLUGINS_GROUP",
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]
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