Allow selecting enabled plugins

fixes #5235

Co-Authored-By: Pedro Brochado <[email protected]>

CHANGES/5235.feature

@@ -0,0 +1 @@
+Added ``ENABLED_PLUGINS`` option to allow selecting installed plugins to be enabled.

docs/admin/reference/settings.md

@@ -196,6 +196,11 @@ The password for Redis.
 Pulp defines the following settings itself:
 
 
+### ENABLED_PLUGINS
+
+An optional list of plugin names.
+If provided, Pulp will limit loading plugins to this list.
+If omitted, Pulp will load all installed plugins.
 
 ### API_ROOT
 

pulpcore/app/settings.py

@@ -120,14 +120,6 @@
     "pulpcore.app",
 ]
 
-# Enumerate the installed Pulp plugins during the loading process for use in the status API
-INSTALLED_PULP_PLUGINS = []
-
-for entry_point in entry_points(group="pulpcore.plugin"):
-    plugin_app_config = entry_point.load()
-    INSTALLED_PULP_PLUGINS.append(entry_point.name)
-    INSTALLED_APPS.append(plugin_app_config)
-
 # Optional apps that help with development, or augment Pulp in some non-critical way
 OPTIONAL_APPS = [
     "crispy_forms",
@@ -390,9 +382,17 @@
 
 # HERE STARTS DYNACONF EXTENSION LOAD (Keep at the very bottom of settings.py)
 # Read more at https://www.dynaconf.com/django/
-from dynaconf import DjangoDynaconf, Validator  # noqa
+from dynaconf import DjangoDynaconf, Dynaconf, Validator  # noqa
 
 # Validators
+
+enabled_plugins_validator = Validator(
+    "ENABLED_PLUGINS",
+    is_type_of=list,
+    len_min=1,
+    when=Validator("ENABLED_PLUGINS", must_exist=True),
+)
+
 storage_keys = ("STORAGES.default.BACKEND", "DEFAULT_FILE_STORAGE")
 storage_validator = (
     Validator("REDIRECT_TO_OBJECT_STORAGE", eq=False)
@@ -493,23 +493,31 @@ def otel_middleware_hook(settings):
     __name__,
     ENVVAR_PREFIX_FOR_DYNACONF="PULP",
     ENV_SWITCHER_FOR_DYNACONF="PULP_ENV",
-    PRELOAD_FOR_DYNACONF=[
-        "{}.app.settings".format(plugin_name) for plugin_name in INSTALLED_PULP_PLUGINS
-    ],
     ENVVAR_FOR_DYNACONF="PULP_SETTINGS",
     load_dotenv=False,
     validators=[
         api_root_validator,
         cache_validator,
+        enabled_plugins_validator,
         sha256_validator,
         storage_validator,
         unknown_algs_validator,
         json_header_auth_validator,
         authentication_json_header_openapi_security_scheme_validator,
     ],
-    post_hooks=otel_middleware_hook,
+    post_hooks=(otel_middleware_hook,),
 )
 
+# Select enabled plugins and load their settings.
+enabled_plugins = settings.get("ENABLED_PLUGINS", None)
+for entry_point in entry_points(group="pulpcore.plugin"):
+    if enabled_plugins and entry_point.name not in enabled_plugins:
+        continue
+    if (plugin_app := entry_point.load()) not in settings.INSTALLED_APPS:
+        settings.load_file(f"{entry_point.module}.app.settings")
+        settings.INSTALLED_APPS += [plugin_app]
+INSTALLED_APPS = settings.INSTALLED_APPS
+
 # begin compatibility layer for DEFAULT_FILE_STORAGE
 # Remove on pulpcore=3.85 or pulpcore=4.0
 

pyproject.toml

@@ -45,7 +45,7 @@ dependencies = [
   "drf-access-policy>=1.1.2,<1.5.1",
   "drf-nested-routers>=0.93.4,<=0.94.1",
   "drf-spectacular==0.27.2",  # We monkeypatch this so we need a very narrow requirement string
-  "dynaconf>=3.1.12,<3.3.0",
+  "dynaconf>=3.2.5,<3.3.0",
   "gunicorn>=20.1,<23.1.0",
   "importlib-metadata>=6.0.1,<=6.0.1",  # Pinned to fix opentelemetry dependency solving issues with pip
   "jinja2>=3.1,<=3.1.5",
@@ -264,4 +264,4 @@ replace = "version = \"{new_version}\""
 
 filename = "./pyproject.toml"
 search = "version = \"{current_version}\""
-replace = "version = \"{new_version}\""
+replace = "version = \"{new_version}\""