feat(plugins): Load metadata from entry points / distribution

flaschengeist/app.py

@@ -1,10 +1,10 @@
 import enum
-import pkg_resources
 
 from flask import Flask, current_app
 from flask_cors import CORS
 from datetime import datetime, date
 from flask.json import JSONEncoder, jsonify
+from importlib_metadata import entry_points
 from sqlalchemy.exc import OperationalError
 from werkzeug.exceptions import HTTPException
 
@@ -41,18 +41,15 @@ def __load_plugins(app):
     logger.debug("Search for plugins")
 
     app.config["FG_PLUGINS"] = {}
-    for entry_point in pkg_resources.iter_entry_points("flaschengeist.plugins"):
+    for entry_point in entry_points(group="flaschengeist.plugins"):
-        logger.debug(f"Found plugin: >{entry_point.name}<")
+        logger.debug(f"Found plugin: {entry_point.name} ({entry_point.dist.version})")
 
         if entry_point.name == config["FLASCHENGEIST"]["auth"] or (
             entry_point.name in config and config[entry_point.name].get("enabled", False)
         ):
             logger.debug(f"Load plugin {entry_point.name}")
             try:
-                plugin = entry_point.load()
+                plugin = entry_point.load()(entry_point, config=config.get(entry_point.name, {}))
-                if not hasattr(plugin, "name"):
-                    setattr(plugin, "name", entry_point.name)
-                plugin = plugin(config.get(entry_point.name, {}))
                 if hasattr(plugin, "blueprint") and plugin.blueprint is not None:
                     app.register_blueprint(plugin.blueprint)
             except:

flaschengeist/plugins/__init__.py

@@ -1,6 +1,7 @@
-import pkg_resources
+from importlib_metadata import Distribution, EntryPoint
 from werkzeug.datastructures import FileStorage
 from werkzeug.exceptions import MethodNotAllowed, NotFound
+
 from flaschengeist.models.user import _Avatar, User
 from flaschengeist.utils.hook import HookBefore, HookAfter
 
@@ -45,31 +46,43 @@ Args:
 
 class Plugin:
     """Base class for all Plugins
-    If your class uses custom models add a static property called ``models``"""
     
-    blueprint = None  # You have to override
+    If your class uses custom models add a static property called ``models``.
-    """Override with a `flask.blueprint` if the plugin uses custom routes"""
+    """
-    permissions = []  # You have to override
+
-    """Override to add custom permissions used by the plugin
+    name: str
+    """Name of the plugin, loaded from EntryPoint"""
+    
+    version: str
+    """Version of the plugin, loaded from Distribution"""
+
+    dist: Distribution
+    """Distribution of this plugin"""
+
+    blueprint = None
+    """Optional `flask.blueprint` if the plugin uses custom routes"""
+    
+    permissions: list[str] = []
+    """Optional list of custom permissions used by the plugin
     
     A good style is to name the permissions with a prefix related to the plugin name,
     to prevent clashes with other plugins. E. g. instead of *delete* use *plugin_delete*.
     """
-    id = "dev.flaschengeist.plugin"  # You have to override
-    """Override with the unique ID of the plugin (Hint: FQN)"""
-    name = "plugin"  # You have to override
-    """Override with human readable name of the plugin"""
-    models = None  # You have to override
-    """Override with models module"""
-    migrations_path = None  # Override this with the location of your db migrations directory
-    """Override with path to migration files, if custome db tables are used"""
 
-    def __init__(self, config=None):
+    models = None
+    """Optional module containing the SQLAlchemy models used by the plugin"""
+
+    migrations_path = None
+    """Optional location of the path to migration files, required if custome db tables are used"""
+
+    def __init__(self, entry_point: EntryPoint, config=None):
         """Constructor called by create_app
         Args:
             config: Dict configuration containing the plugin section
         """
-        self.version = pkg_resources.get_distribution(self.__module__.split(".")[0]).version
+        self.version = entry_point.dist.version
+        self.name = entry_point.name
+        self.dist = entry_point.dist
 
     def install(self):
         """Installation routine
@@ -91,7 +104,7 @@ class Plugin:
         """
         from ..controller import pluginController
 
-        return pluginController.get_setting(self.id)
+        return pluginController.get_setting(self.id, name, **kwargs)
 
     def set_setting(self, name: str, value):
         """Save setting in database

flaschengeist/plugins/auth_ldap/__init__.py

@@ -17,8 +17,8 @@ from flaschengeist.plugins import AuthPlugin, before_role_updated
 
 
 class AuthLDAP(AuthPlugin):
-    def __init__(self, config):
+    def __init__(self, entry_point, config):
-        super().__init__()
+        super().__init__(entry_point)
         app.config.update(
             LDAP_SERVER=config.get("host", "localhost"),
             LDAP_PORT=config.get("port", 389),

flaschengeist/plugins/balance/__init__.py

@@ -56,16 +56,14 @@ def service_debit():
 
 
 class BalancePlugin(Plugin):
-    name = "balance"
-    id = "dev.flaschengeist.balance"
-    blueprint = Blueprint(name, __name__)
     permissions = permissions.permissions
     plugin: "BalancePlugin" = LocalProxy(lambda: current_app.config["FG_PLUGINS"][BalancePlugin.name])
     models = models
 
-    def __init__(self, config):
+    def __init__(self, entry_point, config):
-        super(BalancePlugin, self).__init__(config)
+        super(BalancePlugin, self).__init__(entry_point, config)
-        from . import routes
+        from . routes import blueprint
+        self.blueprint = blueprint
 
         @plugins_loaded
         def post_loaded(*args, **kwargs):

flaschengeist/plugins/balance/routes.py

@@ -1,6 +1,6 @@
 from datetime import datetime, timezone
 from werkzeug.exceptions import Forbidden, BadRequest
-from flask import request, jsonify
+from flask import Blueprint, request, jsonify
 
 from flaschengeist.utils import HTTP
 from flaschengeist.models.session import Session
@@ -17,8 +17,9 @@ def str2bool(string: str):
         return False
     raise ValueError
 
+blueprint = Blueprint("balance", __package__)
 
-@BalancePlugin.blueprint.route("/users/<userid>/balance/shortcuts", methods=["GET", "PUT"])
+blueprint.route("/users/<userid>/balance/shortcuts", methods=["GET", "PUT"])
 @login_required()
 def get_shortcuts(userid, current_session: Session):
     """Get balance shortcuts of an user
@@ -50,7 +51,7 @@ def get_shortcuts(userid, current_session: Session):
         return HTTP.no_content()
 
 
-@BalancePlugin.blueprint.route("/users/<userid>/balance/limit", methods=["GET"])
+blueprint.route("/users/<userid>/balance/limit", methods=["GET"])
 @login_required()
 def get_limit(userid, current_session: Session):
     """Get limit of an user
@@ -73,7 +74,7 @@ def get_limit(userid, current_session: Session):
     return {"limit": balance_controller.get_limit(user)}
 
 
-@BalancePlugin.blueprint.route("/users/<userid>/balance/limit", methods=["PUT"])
+blueprint.route("/users/<userid>/balance/limit", methods=["PUT"])
 @login_required(permissions.SET_LIMIT)
 def set_limit(userid, current_session: Session):
     """Set the limit of an user
@@ -99,7 +100,7 @@ def set_limit(userid, current_session: Session):
     return HTTP.no_content()
 
 
-@BalancePlugin.blueprint.route("/users/balance/limit", methods=["GET", "PUT"])
+blueprint.route("/users/balance/limit", methods=["GET", "PUT"])
 @login_required(permission=permissions.SET_LIMIT)
 def limits(current_session: Session):
     """Get, Modify limit of all users
@@ -124,7 +125,7 @@ def limits(current_session: Session):
     return HTTP.no_content()
 
 
-@BalancePlugin.blueprint.route("/users/<userid>/balance", methods=["GET"])
+blueprint.route("/users/<userid>/balance", methods=["GET"])
 @login_required(permission=permissions.SHOW)
 def get_balance(userid, current_session: Session):
     """Get balance of user, optionally filtered
@@ -162,7 +163,7 @@ def get_balance(userid, current_session: Session):
     return {"credit": balance[0], "debit": balance[1], "balance": balance[2]}
 
 
-@BalancePlugin.blueprint.route("/users/<userid>/balance/transactions", methods=["GET"])
+blueprint.route("/users/<userid>/balance/transactions", methods=["GET"])
 @login_required(permission=permissions.SHOW)
 def get_transactions(userid, current_session: Session):
     """Get transactions of user, optionally filtered
@@ -223,7 +224,7 @@ def get_transactions(userid, current_session: Session):
     return {"transactions": transactions, "count": count}
 
 
-@BalancePlugin.blueprint.route("/users/<userid>/balance", methods=["PUT"])
+blueprint.route("/users/<userid>/balance", methods=["PUT"])
 @login_required()
 def change_balance(userid, current_session: Session):
     """Change balance of an user
@@ -272,7 +273,7 @@ def change_balance(userid, current_session: Session):
     raise Forbidden
 
 
-@BalancePlugin.blueprint.route("/balance/<int:transaction_id>", methods=["DELETE"])
+blueprint.route("/balance/<int:transaction_id>", methods=["DELETE"])
 @login_required()
 def reverse_transaction(transaction_id, current_session: Session):
     """Reverse a transaction
@@ -297,7 +298,7 @@ def reverse_transaction(transaction_id, current_session: Session):
     raise Forbidden
 
 
-@BalancePlugin.blueprint.route("/balance", methods=["GET"])
+blueprint.route("/balance", methods=["GET"])
 @login_required(permission=permissions.SHOW_OTHER)
 def get_balances(current_session: Session):
     """Get all balances

flaschengeist/plugins/message_mail.py

@@ -12,8 +12,8 @@ from . import Plugin
 
 
 class MailMessagePlugin(Plugin):
-    def __init__(self, config):
+    def __init__(self, entry_point, config):
-        super().__init__()
+        super().__init__(entry_point)
         self.server = config["SERVER"]
         self.port = config["PORT"]
         self.user = config["USER"]

flaschengeist/plugins/pricelist/__init__.py

@@ -15,21 +15,22 @@ from . import models
 from . import pricelist_controller, permissions
 
 
+blueprint = Blueprint("pricelist", __name__, url_prefix="/pricelist")
+
 class PriceListPlugin(Plugin):
-    name = "pricelist"
     permissions = permissions.permissions
-    blueprint = Blueprint(name, __name__, url_prefix="/pricelist")
     plugin = LocalProxy(lambda: current_app.config["FG_PLUGINS"][PriceListPlugin.name])
     models = models
 
-    def __init__(self, cfg):
+    def __init__(self, entry_point, config=None):
-        super().__init__(cfg)
+        super().__init__(entry_point, config)
+        self.blueprint = blueprint
         config = {"discount": 0}
-        config.update(cfg)
+        config.update(config)
 
 
-@PriceListPlugin.blueprint.route("/drink-types", methods=["GET"])
+blueprint.route("/drink-types", methods=["GET"])
-@PriceListPlugin.blueprint.route("/drink-types/<int:identifier>", methods=["GET"])
+blueprint.route("/drink-types/<int:identifier>", methods=["GET"])
 def get_drink_types(identifier=None):
     """Get DrinkType(s)
 
@@ -49,7 +50,7 @@ def get_drink_types(identifier=None):
     return jsonify(result)
 
 
-@PriceListPlugin.blueprint.route("/drink-types", methods=["POST"])
+blueprint.route("/drink-types", methods=["POST"])
 @login_required(permission=permissions.CREATE_TYPE)
 def new_drink_type(current_session):
     """Create new DrinkType
@@ -71,7 +72,7 @@ def new_drink_type(current_session):
     return jsonify(drink_type)
 
 
-@PriceListPlugin.blueprint.route("/drink-types/<int:identifier>", methods=["PUT"])
+blueprint.route("/drink-types/<int:identifier>", methods=["PUT"])
 @login_required(permission=permissions.EDIT_TYPE)
 def update_drink_type(identifier, current_session):
     """Modify DrinkType
@@ -94,7 +95,7 @@ def update_drink_type(identifier, current_session):
     return jsonify(drink_type)
 
 
-@PriceListPlugin.blueprint.route("/drink-types/<int:identifier>", methods=["DELETE"])
+blueprint.route("/drink-types/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE_TYPE)
 def delete_drink_type(identifier, current_session):
     """Delete DrinkType
@@ -112,8 +113,8 @@ def delete_drink_type(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/tags", methods=["GET"])
+blueprint.route("/tags", methods=["GET"])
-@PriceListPlugin.blueprint.route("/tags/<int:identifier>", methods=["GET"])
+blueprint.route("/tags/<int:identifier>", methods=["GET"])
 def get_tags(identifier=None):
     """Get Tag(s)
 
@@ -133,7 +134,7 @@ def get_tags(identifier=None):
     return jsonify(result)
 
 
-@PriceListPlugin.blueprint.route("/tags", methods=["POST"])
+blueprint.route("/tags", methods=["POST"])
 @login_required(permission=permissions.CREATE_TAG)
 def new_tag(current_session):
     """Create Tag
@@ -153,7 +154,7 @@ def new_tag(current_session):
     return jsonify(drink_type)
 
 
-@PriceListPlugin.blueprint.route("/tags/<int:identifier>", methods=["PUT"])
+blueprint.route("/tags/<int:identifier>", methods=["PUT"])
 @login_required(permission=permissions.EDIT_TAG)
 def update_tag(identifier, current_session):
     """Modify Tag
@@ -174,7 +175,7 @@ def update_tag(identifier, current_session):
     return jsonify(tag)
 
 
-@PriceListPlugin.blueprint.route("/tags/<int:identifier>", methods=["DELETE"])
+blueprint.route("/tags/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE_TAG)
 def delete_tag(identifier, current_session):
     """Delete Tag
@@ -192,8 +193,8 @@ def delete_tag(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/drinks", methods=["GET"])
+blueprint.route("/drinks", methods=["GET"])
-@PriceListPlugin.blueprint.route("/drinks/<int:identifier>", methods=["GET"])
+blueprint.route("/drinks/<int:identifier>", methods=["GET"])
 def get_drinks(identifier=None):
     """Get Drink(s)
 
@@ -249,7 +250,7 @@ def get_drinks(identifier=None):
     return jsonify({"drinks": drinks, "count": count})
 
 
-@PriceListPlugin.blueprint.route("/list", methods=["GET"])
+blueprint.route("/list", methods=["GET"])
 def get_pricelist():
     """Get Priclist
     Route: ``/pricelist/list`` | Method: ``GET``
@@ -298,7 +299,7 @@ def get_pricelist():
     return jsonify({"pricelist": pricelist, "count": count})
 
 
-@PriceListPlugin.blueprint.route("/drinks/search/<string:name>", methods=["GET"])
+blueprint.route("/drinks/search/<string:name>", methods=["GET"])
 def search_drinks(name):
     """Search Drink
 
@@ -319,7 +320,7 @@ def search_drinks(name):
     return jsonify(pricelist_controller.get_drinks(name, public=public))
 
 
-@PriceListPlugin.blueprint.route("/drinks", methods=["POST"])
+blueprint.route("/drinks", methods=["POST"])
 @login_required(permission=permissions.CREATE)
 def create_drink(current_session):
     """Create Drink
@@ -371,7 +372,7 @@ def create_drink(current_session):
     return jsonify(pricelist_controller.set_drink(data))
 
 
-@PriceListPlugin.blueprint.route("/drinks/<int:identifier>", methods=["PUT"])
+blueprint.route("/drinks/<int:identifier>", methods=["PUT"])
 @login_required(permission=permissions.EDIT)
 def update_drink(identifier, current_session):
     """Modify Drink
@@ -425,7 +426,7 @@ def update_drink(identifier, current_session):
     return jsonify(pricelist_controller.update_drink(identifier, data))
 
 
-@PriceListPlugin.blueprint.route("/drinks/<int:identifier>", methods=["DELETE"])
+blueprint.route("/drinks/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE)
 def delete_drink(identifier, current_session):
     """Delete Drink
@@ -443,7 +444,7 @@ def delete_drink(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/prices/<int:identifier>", methods=["DELETE"])
+blueprint.route("/prices/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE_PRICE)
 def delete_price(identifier, current_session):
     """Delete Price
@@ -461,7 +462,7 @@ def delete_price(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/volumes/<int:identifier>", methods=["DELETE"])
+blueprint.route("/volumes/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE_VOLUME)
 def delete_volume(identifier, current_session):
     """Delete DrinkPriceVolume
@@ -479,7 +480,7 @@ def delete_volume(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/ingredients/extraIngredients", methods=["GET"])
+blueprint.route("/ingredients/extraIngredients", methods=["GET"])
 @login_required()
 def get_extra_ingredients(current_session):
     """Get ExtraIngredients
@@ -495,7 +496,7 @@ def get_extra_ingredients(current_session):
     return jsonify(pricelist_controller.get_extra_ingredients())
 
 
-@PriceListPlugin.blueprint.route("/ingredients/<int:identifier>", methods=["DELETE"])
+blueprint.route("/ingredients/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE_INGREDIENTS_DRINK)
 def delete_ingredient(identifier, current_session):
     """Delete Ingredient
@@ -513,7 +514,7 @@ def delete_ingredient(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/ingredients/extraIngredients", methods=["POST"])
+blueprint.route("/ingredients/extraIngredients", methods=["POST"])
 @login_required(permission=permissions.EDIT_INGREDIENTS)
 def set_extra_ingredient(current_session):
     """Create ExtraIngredient
@@ -532,7 +533,7 @@ def set_extra_ingredient(current_session):
     return jsonify(pricelist_controller.set_extra_ingredient(data))
 
 
-@PriceListPlugin.blueprint.route("/ingredients/extraIngredients/<int:identifier>", methods=["PUT"])
+blueprint.route("/ingredients/extraIngredients/<int:identifier>", methods=["PUT"])
 @login_required(permission=permissions.EDIT_INGREDIENTS)
 def update_extra_ingredient(identifier, current_session):
     """Modify ExtraIngredient
@@ -552,7 +553,7 @@ def update_extra_ingredient(identifier, current_session):
     return jsonify(pricelist_controller.update_extra_ingredient(identifier, data))
 
 
-@PriceListPlugin.blueprint.route("/ingredients/extraIngredients/<int:identifier>", methods=["DELETE"])
+blueprint.route("/ingredients/extraIngredients/<int:identifier>", methods=["DELETE"])
 @login_required(permission=permissions.DELETE_INGREDIENTS)
 def delete_extra_ingredient(identifier, current_session):
     """Delete ExtraIngredient
@@ -570,7 +571,7 @@ def delete_extra_ingredient(identifier, current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/settings/min_prices", methods=["GET"])
+blueprint.route("/settings/min_prices", methods=["GET"])
 @login_required()
 def get_pricelist_settings_min_prices(current_session):
     """Get MinPrices
@@ -591,7 +592,7 @@ def get_pricelist_settings_min_prices(current_session):
     return jsonify(min_prices)
 
 
-@PriceListPlugin.blueprint.route("/settings/min_prices", methods=["POST"])
+blueprint.route("/settings/min_prices", methods=["POST"])
 @login_required(permission=permissions.EDIT_MIN_PRICES)
 def post_pricelist_settings_min_prices(current_session):
     """Create MinPrices
@@ -614,7 +615,7 @@ def post_pricelist_settings_min_prices(current_session):
     return no_content()
 
 
-@PriceListPlugin.blueprint.route("/users/<userid>/pricecalc_columns", methods=["GET", "PUT"])
+blueprint.route("/users/<userid>/pricecalc_columns", methods=["GET", "PUT"])
 @login_required()
 def get_columns(userid, current_session):
     """Get pricecalc_columns of an user
@@ -646,7 +647,7 @@ def get_columns(userid, current_session):
         return no_content()
 
 
-@PriceListPlugin.blueprint.route("/users/<userid>/pricecalc_columns_order", methods=["GET", "PUT"])
+blueprint.route("/users/<userid>/pricecalc_columns_order", methods=["GET", "PUT"])
 @login_required()
 def get_columns_order(userid, current_session):
     """Get pricecalc_columns_order of an user
@@ -677,7 +678,7 @@ def get_columns_order(userid, current_session):
         return no_content()
 
 
-@PriceListPlugin.blueprint.route("/users/<userid>/pricelist", methods=["GET", "PUT"])
+blueprint.route("/users/<userid>/pricelist", methods=["GET", "PUT"])
 @login_required()
 def get_priclist_setting(userid, current_session):
     """Get pricelistsetting of an user
@@ -710,7 +711,7 @@ def get_priclist_setting(userid, current_session):
         return no_content()
 
 
-@PriceListPlugin.blueprint.route("/drinks/<int:identifier>/picture", methods=["POST", "DELETE"])
+blueprint.route("/drinks/<int:identifier>/picture", methods=["POST", "DELETE"])
 @login_required(permission=permissions.EDIT)
 def set_picture(identifier, current_session):
     """Get, Create, Delete Drink Picture
@@ -737,7 +738,7 @@ def set_picture(identifier, current_session):
         raise BadRequest
 
 
-@PriceListPlugin.blueprint.route("/drinks/<int:identifier>/picture", methods=["GET"])
+blueprint.route("/drinks/<int:identifier>/picture", methods=["GET"])
 # @headers({"Cache-Control": "private, must-revalidate"})
 def _get_picture(identifier):
     """Get Picture

flaschengeist/plugins/roles/__init__.py

@@ -16,8 +16,7 @@ from . import permissions
 
 
 class RolesPlugin(Plugin):
-    name = "roles"
+    blueprint = Blueprint("roles", __name__)
-    blueprint = Blueprint(name, __name__)
     permissions = permissions.permissions
 
 

flaschengeist/plugins/scheduler.py

@@ -44,11 +44,12 @@ class SchedulerPlugin(Plugin):
     name = "scheduler"
     blueprint = Blueprint(name, __name__)
 
-    def __init__(self, config=None):
+    def __init__(self, entry_point, config=None):
         """Constructor called by create_app
         Args:
             config: Dict configuration containing the plugin section
         """
+        super().__init__(entry_point)
 
         def __view_func():
             self.run_tasks()

flaschengeist/plugins/users/__init__.py

@@ -18,8 +18,7 @@ from flaschengeist.utils.datetime import from_iso_format
 
 
 class UsersPlugin(Plugin):
-    name = "users"
+    blueprint = Blueprint("users", __name__)
-    blueprint = Blueprint(name, __name__)
     permissions = permissions.permissions
 
 

setup.cfg

@@ -26,6 +26,8 @@ install_requires =
     Pillow>=8.4.0
     flask_cors
     flask_sqlalchemy>=2.5
+    # Importlib requirement can be dropped when python requirement is >= 3.10
+    importlib_metadata>=4.3
     sqlalchemy>=1.4.26
     toml
     werkzeug