_hook.py

InputHook

Bases: Protocol[T]

Hook used to inject custom logic that will be executed before and after an input is loaded.

after_input_load(io, data)

Hook that is executed after an input is loaded.

Parameters:

Name	Type	Description	Default
io	Input[T]	the input object.	required
data	T	the loaded data.	required

before_input_load(io)

Hook that is executed before an input is loaded.

Parameters:

Name	Type	Description	Default
io	Input[T]	the input object.	required

NodeHook

Bases: Protocol

Hook used to inject custom logic that will be executed when a node is run.

on_node_call_error(node, error)

Triggered when an exception is raised when calling the node.

Parameters:

Name	Type	Description	Default
node	Node	the node object	required
error	Exception	the error	required

OutputHook

Bases: Protocol[T]

Hook used to inject custom logic that will be executed before and after an output is saved.

after_output_save(io, data)

Hook that is executed after an output is saved.

Parameters:

Name	Type	Description	Default
io	Output[T]	the input object.	required
data	T	the data that has been saved.	required

before_output_save(io, data)

Hook that is executed before an output is saved.

Parameters:

Name	Type	Description	Default
io	Output[T]	the input object.	required
data	T	the data to be saved.	required

RunHook

Bases: Protocol

Hook used to inject custom logic that will be executed when a graph is run.

after_run(graph, data)

Triggered after the graph is run.

Parameters:

Name	Type	Description	Default
graph	NodeGraph	the graph object	required
data	dict[Input | Output | IO, Any]	mapping of all inputs and outputs to their loaded/saved data	required

before_run(graph)

Triggered before the graph is run.

Parameters:

Name	Type	Description	Default
graph	NodeGraph	the graph object	required