Remove straight.plugin from anitya dependencies

This library caused issue with python 3.12 and as there is no update to this
library for 3 years it is best to just remove it.

The new solution is using standard libraries instead and doesn't introduce new
dependencies. Also no test was touched, so the logic is still the same.

Fixes #1769

Signed-off-by: Michal Konecny <[email protected]>

anitya/lib/plugins.py

@@ -18,13 +18,15 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 """Module handling the load/call of the plugins of anitya."""
 
+import inspect
 import logging
+import os
+import pkgutil
+from importlib import import_module
 
-from straight.plugin import load
-
-from anitya.lib.backends import BaseBackend
-from anitya.lib.ecosystems import BaseEcosystem
-from anitya.lib.versions import Version
+import anitya.lib.backends as anitya_backends
+import anitya.lib.ecosystems as anitya_ecosystems
+import anitya.lib.versions as anitya_versions
 
 _log = logging.getLogger(__name__)
 
@@ -38,7 +40,18 @@ def __init__(self, namespace, base_class):
 
     def get_plugins(self):
         """Return the list of plugins."""
-        return load(self._namespace, subclasses=self._base_class)
+        module_path = os.path.dirname(self._namespace.__file__)
+        module_names = [name for _, name, _ in pkgutil.iter_modules([module_path])]
+        plugins = []
+        for module_name in module_names:
+            module = import_module(f"{self._namespace.__name__}.{module_name}")
+            classes = [obj for _, obj in inspect.getmembers(module, inspect.isclass)]
+            for cls in classes:
+                if cls == self._base_class:
+                    continue
+                if issubclass(cls, self._base_class):
+                    plugins.append(cls)
+        return plugins
 
     def get_plugin_names(self):
         """Return the list of plugin names."""
@@ -54,9 +67,9 @@ def get_plugin(self, plugin_name):
                 return plugin
 
 
-BACKEND_PLUGINS = _PluginManager("anitya.lib.backends", BaseBackend)
-ECOSYSTEM_PLUGINS = _PluginManager("anitya.lib.ecosystems", BaseEcosystem)
-VERSION_PLUGINS = _PluginManager("anitya.lib.versions", Version)
+BACKEND_PLUGINS = _PluginManager(anitya_backends, anitya_backends.BaseBackend)
+ECOSYSTEM_PLUGINS = _PluginManager(anitya_ecosystems, anitya_ecosystems.BaseEcosystem)
+VERSION_PLUGINS = _PluginManager(anitya_versions, anitya_versions.Version)
 
 
 def _load_backend_plugins(session):

news/1769.dev

@@ -0,0 +1 @@
+Remove `straight.plugin` dependency