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25 lines
710 B
Python
25 lines
710 B
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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"""Base class for attention-like layers."""
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from abc import ABC, abstractmethod
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from typing import TYPE_CHECKING
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if TYPE_CHECKING:
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from vllm.attention.backends.abstract import AttentionBackend
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class AttentionLayerBase(ABC):
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"""
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Base class for attention-like layers (Attention, Mamba, etc.)
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that support the v1 engine.
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This provides a common interface for getting attention backends
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from different layer types.
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"""
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@abstractmethod
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def get_attn_backend(self) -> type["AttentionBackend"]:
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"""Get the attention backend class for this layer."""
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pass
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