def _check_loopback_dependency(self):
"""
Alerts the user if they have an item depend on itself.
"""
if self.id in self.needs or self.id in self.needed_by:
raise ItemDependencyError(
_("'{item}' in bundle '{bundle}' on node '{node}' cannot depend on itself"
).format(
item=self.id,
bundle=self.bundle.name,
node=self.node.name,
))
def _check_redundant_dependencies(self):
"""
Alerts the user if they have defined a redundant dependency
(such as settings 'needs' on a triggered item pointing to the
triggering item).
"""
for dep in self._deps:
if self._deps.count(dep) > 1:
raise ItemDependencyError(
_("redundant dependency of {item1} in bundle '{bundle}' on {item2}"
).format(
bundle=self.bundle.name,
item1=self.id,
item2=dep,
))