37 lines
1.0 KiB
Python
37 lines
1.0 KiB
Python
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"""Tool for the Dataherald Hosted API"""
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from typing import Optional, Type
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from langchain_core.callbacks import CallbackManagerForToolRun
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from langchain_core.tools import BaseTool
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from pydantic import BaseModel, Field
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from langchain_community.utilities.dataherald import DataheraldAPIWrapper
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class DataheraldTextToSQLInput(BaseModel):
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prompt: str = Field(
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description="Natural language query to be translated to a SQL query."
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)
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class DataheraldTextToSQL(BaseTool):
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"""Tool that queries using the Dataherald SDK."""
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name: str = "dataherald"
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description: str = (
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"A wrapper around Dataherald. "
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"Text to SQL. "
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"Input should be a prompt and an existing db_connection_id"
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)
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api_wrapper: DataheraldAPIWrapper
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args_schema: Type[BaseModel] = DataheraldTextToSQLInput
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def _run(
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self,
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prompt: str,
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run_manager: Optional[CallbackManagerForToolRun] = None,
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) -> str:
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"""Use the Dataherald tool."""
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return self.api_wrapper.run(prompt)
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