mirror of
https://github.com/hwchase17/langchain
synced 2024-11-08 07:10:35 +00:00
68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
from typing import Optional
|
|
|
|
import typer
|
|
from typing_extensions import Annotated
|
|
|
|
from langchain_cli.namespaces import app as app_namespace
|
|
from langchain_cli.namespaces import template as template_namespace
|
|
from langchain_cli.utils.packages import get_langserve_export, get_package_root
|
|
|
|
__version__ = "0.0.16"
|
|
|
|
app = typer.Typer(no_args_is_help=True, add_completion=False)
|
|
app.add_typer(
|
|
template_namespace.package_cli, name="template", help=template_namespace.__doc__
|
|
)
|
|
app.add_typer(app_namespace.app_cli, name="app", help=app_namespace.__doc__)
|
|
|
|
|
|
def version_callback(show_version: bool) -> None:
|
|
if show_version:
|
|
typer.echo(f"langchain-cli {__version__}")
|
|
raise typer.Exit()
|
|
|
|
|
|
@app.callback()
|
|
def main(
|
|
version: bool = typer.Option(
|
|
False,
|
|
"--version",
|
|
"-v",
|
|
help="Print the current CLI version.",
|
|
callback=version_callback,
|
|
is_eager=True,
|
|
),
|
|
):
|
|
pass
|
|
|
|
|
|
@app.command()
|
|
def serve(
|
|
*,
|
|
port: Annotated[
|
|
Optional[int], typer.Option(help="The port to run the server on")
|
|
] = None,
|
|
host: Annotated[
|
|
Optional[str], typer.Option(help="The host to run the server on")
|
|
] = None,
|
|
) -> None:
|
|
"""
|
|
Start the LangServe app, whether it's a template or an app.
|
|
"""
|
|
|
|
# see if is a template
|
|
try:
|
|
project_dir = get_package_root()
|
|
pyproject = project_dir / "pyproject.toml"
|
|
get_langserve_export(pyproject)
|
|
except KeyError:
|
|
# not a template
|
|
app_namespace.serve(port=port, host=host)
|
|
else:
|
|
# is a template
|
|
template_namespace.serve(port=port, host=host)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
app()
|