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https://github.com/hwchase17/langchain
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Thank you for contributing to LangChain! **Description:** update to the Vectara / Langchain integration to integrate new Vectara capabilities: - Full RAG implemented as a Runnable with as_rag() - Vectara chat supported with as_chat() - Both support streaming response - Updated documentation and example notebook to reflect all the changes - Updated Vectara templates **Twitter handle:** ofermend **Add tests and docs**: no new tests or docs, but updated both existing tests and existing docs
30 lines
1017 B
Python
30 lines
1017 B
Python
import os
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from langchain_community.vectorstores import Vectara
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from langchain_community.vectorstores.vectara import SummaryConfig, VectaraQueryConfig
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from langchain_core.pydantic_v1 import BaseModel
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if os.environ.get("VECTARA_CUSTOMER_ID", None) is None:
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raise Exception("Missing `VECTARA_CUSTOMER_ID` environment variable.")
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if os.environ.get("VECTARA_CORPUS_ID", None) is None:
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raise Exception("Missing `VECTARA_CORPUS_ID` environment variable.")
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if os.environ.get("VECTARA_API_KEY", None) is None:
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raise Exception("Missing `VECTARA_API_KEY` environment variable.")
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# Setup the Vectara vectorstore with your Corpus ID and API Key
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vectara = Vectara()
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# Define the query configuration:
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summary_config = SummaryConfig(is_enabled=True, max_results=5, response_lang="eng")
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config = VectaraQueryConfig(k=10, lambda_val=0.005, summary_config=summary_config)
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rag = Vectara().as_rag(config)
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# Add typing for input
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class Question(BaseModel):
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__root__: str
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chain = rag.with_types(input_type=Question)
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