66 lines
2.6 KiB
Python
66 lines
2.6 KiB
Python
# rag_chain.py
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import os
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import weaviate
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from weaviate.auth import AuthApiKey
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from weaviate.classes.init import Auth
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from langchain.vectorstores import Weaviate
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from langchain.chains import RetrievalQA
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from langchain.chat_models import ChatOpenAI
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from langchain.embeddings import OpenAIEmbeddings
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def build_rag_chain():
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# 1. Weaviate 클라이언트
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auth_config = weaviate.AuthApiKey(api_key="01jryrcctd8c8vxbj4bs2ywrgs")
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# client = weaviate.connect_to_weaviate_cloud(cluster_url="http://183.111.96.67:32668",
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# auth_credentials=Auth.api_key("01jryrcctd8c8vxbj4bs2ywrgs"),
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# headers={
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# "X-OpenAI-Api-Key": "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" # 필요할 경우
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# })
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OPENAI_API_KEY="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"
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client = weaviate.Client(
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url="http://183.111.96.67:32668", # 예: "http://183.111.96.67:32668"
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auth_client_secret=Auth.api_key("01jryrcctd8c8vxbj4bs2ywrgs"), # 필요 없으면 제거
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additional_headers={
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"X-OpenAI-Api-Key": "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" # 필요할 경우
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}
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)
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# client = weaviate.connect_to_custom(
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# http_host="183.111.96.67",
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# http_port=32668,
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# grpc_host="183.111.96.67",
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# http_secure=False,
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# grpc_port=32619,
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# grpc_secure=False,
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# auth_credentials=AuthApiKey("01js3q6y7twaxccm5dbh3se9bt"), # 인증이 필요 없으면 생략 가능
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# headers={"X-OpenAI-Api-Key": OPENAI_API_KEY} # 필요시
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# )
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if client.is_ready():
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print("Weaviate 연결 성공!")
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else:
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print("연결 실패. 서버 상태를 확인하세요.")
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# 2. 벡터스토어
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vectorstore = Weaviate(
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client=client,
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index_name="LangDocs",
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text_key="text",
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embedding=OpenAIEmbeddings(openai_api_key=OPENAI_API_KEY)
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)
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# 3. HuggingFace LLM (예: mistralai/Mistral-7B-Instruct-v0.2)
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llm = ChatOpenAI(temperature=0, openai_api_key=OPENAI_API_KEY)
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retriever = vectorstore.as_retriever()
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# 4. RetrievalQA chain 구성
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qa_chain = RetrievalQA.from_chain_type(llm=llm, retriever=retriever)
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client.close()
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return qa_chain
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