ComfyUI/main.py
guill 2b653e8c18
Support for async node functions (#8830)
* Support for async execution functions

This commit adds support for node execution functions defined as async. When
a node's execution function is defined as async, we can continue
executing other nodes while it is processing.

Standard uses of `await` should "just work", but people will still have
to be careful if they spawn actual threads. Because torch doesn't really
have async/await versions of functions, this won't particularly help
with most locally-executing nodes, but it does work for e.g. web
requests to other machines.

In addition to the execute function, the `VALIDATE_INPUTS` and
`check_lazy_status` functions can also be defined as async, though we'll
only resolve one node at a time right now for those.

* Add the execution model tests to CI

* Add a missing file

It looks like this got caught by .gitignore? There's probably a better
place to put it, but I'm not sure what that is.

* Add the websocket library for automated tests

* Add additional tests for async error cases

Also fixes one bug that was found when an async function throws an error
after being scheduled on a task.

* Add a feature flags message to reduce bandwidth

We now only send 1 preview message of the latest type the client can
support.

We'll add a console warning when the client fails to send a feature
flags message at some point in the future.

* Add async tests to CI

* Don't actually add new tests in this PR

Will do it in a separate PR

* Resolve unit test in GPU-less runner

* Just remove the tests that GHA can't handle

* Change line endings to UNIX-style

* Avoid loading model_management.py so early

Because model_management.py has a top-level `logging.info`, we have to
be careful not to import that file before we call `setup_logging`. If we
do, we end up having the default logging handler registered in addition
to our custom one.
2025-07-10 14:46:19 -04:00

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Python

import asyncio
import warnings
from pathlib import Path
from comfy.component_model.folder_path_types import FolderNames
if __name__ == "__main__":
warnings.warn("main.py is deprecated. Start comfyui by installing the package through the instructions in the README, not by cloning the repository.", DeprecationWarning)
this_file_parent_dir = Path(__file__).parent
from comfy.cmd.main import _start_comfyui
from comfy.cmd.folder_paths import folder_names_and_paths # type: FolderNames
fn: FolderNames = folder_names_and_paths
fn.base_paths.clear()
fn.base_paths.append(this_file_parent_dir)
asyncio.run(_start_comfyui(from_script_dir=this_file_parent_dir))