The heat.engine.update Module

class heat.engine.update.StackUpdate(existing_stack, new_stack, previous_stack, rollback=False, error_wait_time=None)

Bases: object

A Task to perform the update of an existing stack to a new template.

dependencies()

Return the Dependencies graph for the update.

Returns a Dependencies object representing the dependencies between update operations to move from an existing stack definition to a new one.

preview()