mirror of
https://github.com/open-webui/open-webui
synced 2025-06-11 00:49:44 +00:00
61 lines
1.7 KiB
Python
61 lines
1.7 KiB
Python
import logging
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import requests
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from typing import Optional, List, Tuple
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from open_webui.env import SRC_LOG_LEVELS
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from open_webui.retrieval.models.base_reranker import BaseReranker
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log = logging.getLogger(__name__)
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log.setLevel(SRC_LOG_LEVELS["RAG"])
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class ExternalReranker(BaseReranker):
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def __init__(
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self,
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api_key: str,
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url: str = "http://localhost:8080/v1/rerank",
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model: str = "reranker",
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):
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self.api_key = api_key
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self.url = url
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self.model = model
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def predict(self, sentences: List[Tuple[str, str]]) -> Optional[List[float]]:
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query = sentences[0][0]
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docs = [i[1] for i in sentences]
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payload = {
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"model": self.model,
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"query": query,
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"documents": docs,
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"top_n": len(docs),
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}
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try:
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log.info(f"ExternalReranker:predict:model {self.model}")
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log.info(f"ExternalReranker:predict:query {query}")
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r = requests.post(
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f"{self.url}",
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headers={
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"Content-Type": "application/json",
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"Authorization": f"Bearer {self.api_key}",
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},
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json=payload,
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)
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r.raise_for_status()
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data = r.json()
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if "results" in data:
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sorted_results = sorted(data["results"], key=lambda x: x["index"])
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return [result["relevance_score"] for result in sorted_results]
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else:
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log.error("No results found in external reranking response")
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return None
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except Exception as e:
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log.exception(f"Error in external reranking: {e}")
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return None
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