mirror of
https://github.com/hwchase17/langchain
synced 2024-11-06 03:20:49 +00:00
32 lines
860 B
Python
32 lines
860 B
Python
"""
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Development Scripts for template packages
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"""
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from fastapi import FastAPI
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from langserve import add_routes
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from langserve.packages import get_langserve_export
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from langchain_cli.utils.packages import get_package_root
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def create_demo_server():
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"""
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Creates a demo server for the current template.
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"""
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app = FastAPI()
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package_root = get_package_root()
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pyproject = package_root / "pyproject.toml"
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try:
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package = get_langserve_export(pyproject)
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mod = __import__(package["module"], fromlist=[package["attr"]])
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chain = getattr(mod, package["attr"])
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add_routes(app, chain)
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except KeyError as e:
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raise KeyError("Missing fields from pyproject.toml") from e
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except ImportError as e:
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raise ImportError("Could not import module defined in pyproject.toml") from e
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return app
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