def _render_dependency(self, dep):
"""helper for building jsonable dependencies from various input forms."""
if isinstance(dep, Dependency):
return dep.as_dict()
elif isinstance(dep, AsyncResult):
return dep.msg_ids
elif dep is None:
return []
else:
# pass to Dependency constructor
return list(Dependency(dep))
def _validate_dependency(self, dep):
"""validate a dependency.
For use in `set_flags`.
"""
if dep is None or isinstance(dep, string_types + (AsyncResult, Dependency)):
return True
elif isinstance(dep, (list,set, tuple)):
for d in dep:
if not isinstance(d, string_types + (AsyncResult,)):
return False
elif isinstance(dep, dict):
if set(dep.keys()) != set(Dependency().as_dict().keys()):
return False
if not isinstance(dep['msg_ids'], list):
return False
for d in dep['msg_ids']:
if not isinstance(d, string_types):
return False
else:
return False
return True
