def get_check_plugin(plugin_name: CheckPluginName) -> Optional[CheckPlugin]:
"""Returns the registered check plugin
Management plugins may be created on the fly.
"""
plugin = registered_check_plugins.get(plugin_name)
if plugin is not None or not plugin_name.is_management_name():
return plugin
# create management board plugin on the fly:
non_mgmt_plugin = registered_check_plugins.get(plugin_name.create_host_name())
if non_mgmt_plugin is not None:
return management_plugin_factory(non_mgmt_plugin)
return None
def _validate_service_name(plugin_name: CheckPluginName, service_name: str) -> None:
if not isinstance(service_name, str):
raise TypeError("service_name must be str, got %r" % (service_name,))
if not service_name:
raise ValueError("service_name must not be empty")
if service_name.count(ITEM_VARIABLE) not in (0, 1):
raise ValueError("service_name must contain %r at most once" % ITEM_VARIABLE)
if plugin_name.is_management_name() is not service_name.startswith(MANAGEMENT_DESCR_PREFIX):
raise ValueError(
"service name and description inconsistency: Please neither have your plugins "
"name start with %r, nor the description with %r. In the rare case that you want to "
"implement a check plugin explicitly designed for management boards (and nothing else),"
" you must do both of the above." %
(CheckPluginName.MANAGEMENT_PREFIX, MANAGEMENT_DESCR_PREFIX))
