def abbrtask(S, max):
if S is None:
return "???"
if len(S) > max:
module, _, cls = rpartition(S, ".")
module = abbr(module, max - len(cls), False)
return module + "[.]" + cls
return S
def resolve_transport(transport=None):
transport = TRANSPORT_ALIASES.get(transport, transport)
if callable(transport):
transport = transport()
transport_module_name, _, transport_cls_name = rpartition(transport, ".")
if not transport_module_name:
raise KeyError("No such transport: %s" % (transport, ))
return transport_module_name, transport_cls_name
def resolve_transport(transport=None):
transport = TRANSPORT_ALIASES.get(transport, transport)
if callable(transport):
transport = transport()
transport_module_name, _, transport_cls_name = rpartition(transport, ".")
if not transport_module_name:
raise KeyError("No such transport: %s" % (transport,))
return transport_module_name, transport_cls_name
def abbrtask(S, max):
if S is None:
return "???"
if len(S) > max:
module, _, cls = rpartition(S, ".")
module = abbr(module, max - len(cls) - 3, False)
return module + "[.]" + cls
return S
def get_cls_by_name(name, aliases={}, imp=None):
"""Get class by name.
The name should be the full dot-separated path to the class::
modulename.ClassName
Example::
celery.concurrency.processes.TaskPool
^- class name
If `aliases` is provided, a dict containing short name/long name
mappings, the name is looked up in the aliases first.
Examples:
>>> get_cls_by_name("celery.concurrency.processes.TaskPool")
<class 'celery.concurrency.processes.TaskPool'>
>>> get_cls_by_name("default", {
... "default": "celery.concurrency.processes.TaskPool"})
<class 'celery.concurrency.processes.TaskPool'>
# Does not try to look up non-string names.
>>> from celery.concurrency.processes import TaskPool
>>> get_cls_by_name(TaskPool) is TaskPool
True
"""
if imp is None:
imp = importlib.import_module
if not isinstance(name, basestring):
return name # already a class
name = aliases.get(name) or name
module_name, _, cls_name = rpartition(name, ".")
try:
module = imp(module_name)
except ValueError, exc:
raise ValueError("Couldn't import %r: %s" % (name, exc))
def resolve_backend(backend=None):
backend = BACKEND_ALIASES.get(backend, backend)
backend_module_name, _, backend_cls_name = rpartition(backend, ".")
if not backend_module_name:
raise KeyError("No such backend: %s" % (backend, ))
return backend_module_name, backend_cls_name