Describing conditions with labels

When there are a large number of sub-conditions that make up an AutomationCondition, it can be difficult to understand and troubleshoot the condition. To make conditions easier to understand, you can attach labels to sub-conditions, which will then be displayed in the Dagster UI.

Arbitrary string labels can be attached to any node in the AutomationCondition tree by using the with_label() method, allowing you to describe the purpose of a specific sub-condition. For example:

from dagster import AutomationCondition

in_progress_or_failed_parents = AutomationCondition.any_deps_match(
    AutomationCondition.in_progress() | AutomationCondition.failed()
).with_label("Any parents in progress or failed")

Then, when viewing evaluation results in the UI, the label will display next to the condition:

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Hovering over or expanding the label will display its sub-conditions:

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