def get_transport_name(cls: Type["Transport"]):
for type_ in ("rpc", "result", "event"):
for *_, name, class_ in load_entrypoint_classes(f"lightbus_{type_}_transports"):
if cls == class_:
return name
raise TransportNotFound(
f"Transport class {cls.__module__}.{cls.__name__} is not specified in any entrypoint."
)
def get_available_transports(type_):
loaded = load_entrypoint_classes(f"lightbus_{type_}_transports")
if not loaded:
raise TransportsNotInstalled(
f"No {type_} transports are available, which means lightbus has not been "
f"installed correctly. This is likely because you are working on Lightbus itself. "
f"In which case, within your local lightbus repo you should run "
f"something like 'pip install .' or 'python setup.py develop'.\n\n"
f"This will install the entrypoints (defined in setup.py) which point Lightbus "
f"to it's bundled transports.")
return {name: class_ for module_name, name, class_ in loaded}
def find_plugins() -> Dict[str, Type[LightbusPlugin]]:
"""Discover available plugin classes using the 'lightbus_plugins' entrypoint
"""
available_plugin_classes = load_entrypoint_classes(ENTRYPOINT_NAME)
available_plugin_classes = sorted(available_plugin_classes, key=lambda v: v[-1].priority)
plugins = OrderedDict()
for module_name, name, plugin in available_plugin_classes:
if name in plugins:
pass
plugins[name] = plugin
return plugins
def get_available_transports(type_):
loaded = load_entrypoint_classes(f"lightbus_{type_}_transports")
return {name: class_ for module_name, name, class_ in loaded}