from bt2 import utils
from bt2 import component as bt2_component
+import sys
+
+
+# Python plugin path to `_PluginInfo` (cache)
+_plugin_infos = {}
def plugin_component_class(component_class):
def register_plugin(
module_name, name, description=None, author=None, license=None, version=None
):
- import sys
-
if module_name not in sys.modules:
raise RuntimeError(
"cannot find module '{}' in loaded modules".format(module_name)
# called by the BT plugin system
def _try_load_plugin_module(path):
+ if path in _plugin_infos:
+ # do not load module and create plugin info twice for this path
+ return _plugin_infos[path]
+
import importlib.machinery
import inspect
import hashlib
h = hashlib.sha256()
h.update(path.encode())
module_name = 'bt_plugin_{}'.format(h.hexdigest())
-
+ assert module_name not in sys.modules
# try loading the module: any raised exception is catched by the caller
mod = importlib.machinery.SourceFileLoader(module_name, path).load_module()
comp_class_entries = inspect.getmembers(mod, is_user_comp_class)
plugin_info.comp_class_addrs = [entry[1].addr for entry in comp_class_entries]
+ _plugin_infos[path] = plugin_info
return plugin_info