Source code for heat.engine.lifecycle_plugin

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[docs]class LifecyclePlugin(object): """Base class for pre-op and post-op work on a stack. Implementations should extend this class and override the methods. """
[docs] def do_pre_op(self, cnxt, stack, current_stack=None, action=None): """Method to be run by heat before stack operations.""" pass
[docs] def do_post_op(self, cnxt, stack, current_stack=None, action=None, is_stack_failure=False): """Method to be run by heat after stack operations, including failures. On failure to execute all the registered pre_ops, this method will be called if and only if the corresponding pre_op was successfully called. On failures of the actual stack operation, this method will be called if all the pre operations were successfully called. """ pass
[docs] def get_ordinal(self): """Get the sort order for pre and post operation execution. The values returned by get_ordinal are used to create a partial order for pre and post operation method invocations. The default ordinal value of 100 may be overridden. If class1inst.ordinal() < class2inst.ordinal(), then the method on class1inst will be executed before the method on class2inst. If class1inst.ordinal() > class2inst.ordinal(), then the method on class1inst will be executed after the method on class2inst. If class1inst.ordinal() == class2inst.ordinal(), then the order of method invocation is indeterminate. """ return 100