labscheduler.dev_tools.visualization module

labscheduler.dev_tools.visualization.visualize_workflow(operations: list[Operation]) → None

Visualizes a directed graph of operations using Graphviz.

Node properties:

• Color:

  • Red if both start and finish are None.

  • Yellow if start is not None but finish is None.

  • Green if neither start nor finish are None.

• Label:

  • The first line is taken from operation.main_machine.preferred if it exists; otherwise, operation.main_machine.type is used.

  • The second line shows the duration.

  • If no main_machine is provided, the operation’s name is used as a fallback.

Edge properties:

• For each edge from a preceding operation to an operation, the label is constructed from:

  • “Min:” from min_wait if the value exists and is non-zero.

  • “Max:” from max_wait if the value exists and is not infinity.

  • “Cost:” from wait_cost if the value exists.

  The three parts are concatenated together with commas. If none of the values are relevant, the edge is unlabeled.

The graph is oriented top-to-bottom (TB) and is saved locally as “workflow_graph.png”, which will be overwritten each time. The image is opened in the default viewer.