feat: add SIGTERM handling and update typer dependency

[ogabrielluiz]

This pull request includes several updates to the src/backend/base/langflow/__main__.py file to improve error handling and code readability, as well as a dependency update in pyproject.toml.

Improvements to error handling:

• Updated the KeyboardInterrupt and Exception handling in the run function to use typer.Exit for cleaner exits and added handling for SystemExit to ensure the process is terminated gracefully.
• Added a try-except block around the main function call to log exceptions and exit gracefully using typer.Exit.

Code readability improvements:

• Combined import statements from langflow.services.database.models.folder.utils and langflow.services.database.models.api_key.crud into single lines. [1] [2]

Dependency updates:

• Updated typer dependency version from 0.12.0 to 0.13.0 in pyproject.toml.

[codspeed-hq]

CodSpeed Performance Report

Merging #4548 will degrade performances by 17.02%

_{Comparing update-typer (bb03866) with main (335b649)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 13 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	update-typer	Change
⚡	test_invalid_run_with_input_type_chat	16.5 ms	13.8 ms	+19.35%
❌	test_successful_run_with_output_type_debug	378.3 ms	455.9 ms	-17.02%

[jordanrfrazier]

Awesome. Built image and ran docker stop <container> and see shutdown:

~/Documents/langflow/langflow (update-typer ✗) docker run --init --rm -p 7860:7860 test:latest
Starting Langflow v1.0.19.post2...
/app/.venv/lib/python3.12/site-packages/pydantic/_internal/_config.py:291: PydanticDeprecatedSince20: Support for class-based `config` is deprecated, use ConfigDict instead. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
  warnings.warn(DEPRECATION_MESSAGE, DeprecationWarning)
/app/.venv/lib/python3.12/site-packages/langchain_community/retrievers/kendra.py:379: PydanticDeprecatedSince20: Pydantic V1 style `@validator` validators are deprecated. You should migrate to Pydantic V2 style `@field_validator` validators, see the migration guide for more details. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
  @validator("top_k")
╭───────────────────────────────────────────────────────────────────╮
│ Welcome to ⛓ Langflow                                             │
│                                                                   │
│                                                                   │
│ Collaborate, and contribute at our GitHub Repo 🌟                 │
│                                                                   │
│ We collect anonymous usage data to improve Langflow.              │
│ You can opt-out by setting DO_NOT_TRACK=true in your environment. │
│                                                                   │
│ Access http://0.0.0.0:7860                                        │
╰───────────────────────────────────────────────────────────────────╯

Langflow shutdown complete
[11/12/24 21:14:41] ERROR    2024-11-12 21:14:41 - ERROR    -   __init__.py:1762
                             __init__ - Worker (pid:30) was                     
                             sent SIGTERM!      

Though, sending SIGTERM to the uv process from make backend just terminates a local process. I think that's okay (though, not what I'd expect?)

(.venv) ~/Documents/langflow/langflow (update-typer ✗) make backend
Installing backend dependencies
Audited 452 packages in 0.67ms
kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]
Running backend respecting the .env file
uv run uvicorn \
		--factory langflow.main:create_app \
		--host 0.0.0.0 \
		--port 7860 \
		 --reload \
		--env-file .env \
		--loop asyncio \
		--workers 1
INFO:     Will watch for changes in these directories: ['/Users/jordan.frazier/Documents/Langflow/langflow']
INFO:     Loading environment from '.env'
INFO:     Uvicorn running on http://0.0.0.0:7860 (Press CTRL+C to quit)
INFO:     Started reloader process [78236] using WatchFiles
Starting Langflow v1.0.19.post2...
/Users/jordan.frazier/Documents/Langflow/langflow/.venv/lib/python3.11/site-packages/pydantic/_internal/_config.py:291: PydanticDeprecatedSince20: Support for class-based `config` is deprecated, use ConfigDict instead. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
  warnings.warn(DEPRECATION_MESSAGE, DeprecationWarning)
/Users/jordan.frazier/Documents/Langflow/langflow/.venv/lib/python3.11/site-packages/pydantic/_internal/_config.py:341: UserWarning: Valid config keys have changed in V2:
* 'schema_extra' has been renamed to 'json_schema_extra'
  warnings.warn(message, UserWarning)
/Users/jordan.frazier/Documents/Langflow/langflow/.venv/lib/python3.11/site-packages/composio/client/http.py:20: DeprecationWarning: Inheritance class AsyncHttpClient from ClientSession is discouraged
  class AsyncHttpClient(AsyncSession, logging.WithLogger):
make: *** [backend] Terminated: 15

edit: ^ is probably due to makefile process on top of uv