def trim_runtime(filters):
"""Remove runtime filters.
Some filters can only be effectively evaluated at policy
execution, ie. event filters.
When evaluating conditions for dryrun or provisioning stages we
remove them.
"""
def remove_filter(f):
block = f.get_block_parent()
block.filters.remove(f)
if isinstance(block, BooleanGroupFilter) and not len(block):
remove_filter(block)
for f in iter_filters(filters):
if isinstance(f, EventFilter):
remove_filter(f)
def iter_filters(self, block_end=False):
return iter_filters(self.filters, block_end=block_end)
