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50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
from abc import ABC, abstractmethod
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from typing import Any, Dict, List, Optional
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import numpy as np
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from pydantic import BaseModel, ConfigDict, Field
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from crewai.knowledge.storage.knowledge_storage import KnowledgeStorage
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class BaseKnowledgeSource(BaseModel, ABC):
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"""Abstract base class for knowledge sources."""
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chunk_size: int = 4000
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chunk_overlap: int = 200
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chunks: List[str] = Field(default_factory=list)
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chunk_embeddings: List[np.ndarray] = Field(default_factory=list)
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model_config = ConfigDict(arbitrary_types_allowed=True)
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storage: KnowledgeStorage = Field(default_factory=KnowledgeStorage)
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metadata: Dict[str, Any] = Field(default_factory=dict) # Currently unused
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collection_name: Optional[str] = Field(default=None)
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@abstractmethod
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def load_content(self) -> Dict[Any, str]:
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"""Load and preprocess content from the source."""
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pass
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@abstractmethod
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def add(self) -> None:
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"""Process content, chunk it, compute embeddings, and save them."""
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pass
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def get_embeddings(self) -> List[np.ndarray]:
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"""Return the list of embeddings for the chunks."""
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return self.chunk_embeddings
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def _chunk_text(self, text: str) -> List[str]:
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"""Utility method to split text into chunks."""
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return [
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text[i : i + self.chunk_size]
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for i in range(0, len(text), self.chunk_size - self.chunk_overlap)
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]
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def _save_documents(self):
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"""
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Save the documents to the storage.
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This method should be called after the chunks and embeddings are generated.
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"""
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self.storage.save(self.chunks)
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