105 lines
2.8 KiB
Python
105 lines
2.8 KiB
Python
from abc import ABC, abstractmethod
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from typing import Any, Callable, Dict, Hashable, Optional, TypeVar
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from torch import nn
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from vllm.logger import init_logger
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from vllm.utils import LRUCache
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logger = init_logger(__name__)
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class AdapterModel(ABC):
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def __init__(self, model_id=None):
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self.id = model_id
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@abstractmethod
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def from_local_checkpoint(cls, model_dir, model_id=None, **kwargs):
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# Common initialization code
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# Load weights or embeddings from local checkpoint
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raise NotImplementedError("Subclasses must implement this method.")
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T = TypeVar('T')
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class AdapterLRUCache(LRUCache[T]):
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def __init__(self, capacity: int, deactivate_fn: Callable[[Hashable],
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None]):
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super().__init__(capacity)
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self.deactivate_fn = deactivate_fn
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def _on_remove(self, key: Hashable, value: Optional[T]):
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logger.debug("Removing adapter int id: %d", key)
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self.deactivate_fn(key)
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return super()._on_remove(key, value)
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class AdapterModelManager(ABC):
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def __init__(
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self,
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model: nn.Module,
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):
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"""Create a AdapterModelManager and adapter for a given model.
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Args:
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model: the model to be adapted.
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"""
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self.model: nn.Module = model
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self._registered_adapters: Dict[int, Any] = {}
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# Dict instead of a Set for compatibility with LRUCache.
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self._active_adapters: Dict[int, None] = {}
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self.adapter_type = 'Adapter'
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self._last_mapping = None
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def __len__(self) -> int:
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return len(self._registered_adapters)
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@property
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@abstractmethod
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def adapter_slots(self) -> int:
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raise NotImplementedError
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@property
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@abstractmethod
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def capacity(self) -> int:
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raise NotImplementedError
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@abstractmethod
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def activate_adapter(self, adapter_id: int) -> bool:
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raise NotImplementedError
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@abstractmethod
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def deactivate_adapter(self, adapter_id: int) -> bool:
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raise NotImplementedError
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@abstractmethod
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def add_adapter(self, adapter: Any) -> bool:
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raise NotImplementedError
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@abstractmethod
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def set_adapter_mapping(self, mapping: Any) -> None:
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raise NotImplementedError
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@abstractmethod
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def remove_adapter(self, adapter_id: int) -> bool:
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raise NotImplementedError
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@abstractmethod
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def remove_all_adapters(self) -> None:
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raise NotImplementedError
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@abstractmethod
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def get_adapter(self, adapter_id: int) -> Optional[Any]:
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raise NotImplementedError
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@abstractmethod
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def list_adapters(self) -> Dict[int, Any]:
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raise NotImplementedError
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@abstractmethod
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def pin_adapter(self, adapter_id: int) -> bool:
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raise NotImplementedError
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