mirror of
https://github.com/comfyanonymous/ComfyUI.git
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62 lines
2.0 KiB
Python
62 lines
2.0 KiB
Python
import contextvars
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from typing import Optional, NamedTuple
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class ExecutionContext(NamedTuple):
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"""
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Context information about the currently executing node.
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Attributes:
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node_id: The ID of the currently executing node
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list_index: The index in a list being processed (for operations on batches/lists)
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"""
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prompt_id: str
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node_id: str
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list_index: Optional[int]
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current_executing_context: contextvars.ContextVar[Optional[ExecutionContext]] = contextvars.ContextVar("current_executing_context", default=None)
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_client_id_unset = object()
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current_client_id = contextvars.ContextVar("current_client_id", default=_client_id_unset)
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def get_executing_context() -> Optional[ExecutionContext]:
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return current_executing_context.get(None)
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def get_current_client_id() -> Optional[str]:
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value = current_client_id.get()
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return None if value is _client_id_unset else value
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def has_current_client_id() -> bool:
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return current_client_id.get() is not _client_id_unset
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def set_current_client_id(client_id: Optional[str]):
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return current_client_id.set(client_id)
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def reset_current_client_id(token):
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current_client_id.reset(token)
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class CurrentNodeContext:
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"""
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Context manager for setting the current executing node context.
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Sets the current_executing_context on enter and resets it on exit.
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Example:
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with CurrentNodeContext(node_id="123", list_index=0):
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# Code that should run with the current node context set
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process_image()
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"""
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def __init__(self, prompt_id: str, node_id: str, list_index: Optional[int] = None):
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self.context = ExecutionContext(
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prompt_id= prompt_id,
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node_id= node_id,
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list_index= list_index
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)
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self.token = None
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def __enter__(self):
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self.token = current_executing_context.set(self.context)
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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if self.token is not None:
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current_executing_context.reset(self.token)
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