Structural Design Pattern: Bridge Pattern

Author: DukeM23

app/data/__init__.py

@@ -1,12 +1,14 @@
 """app.data"""
-from ..services.location.csbs import CSBSLocationService
-from ..services.location.jhu import JhuLocationService
-from ..services.location.nyt import NYTLocationService
+from ..services.location.csbs import CSBSLocationServicee
+from ..services.location.jhu import JhuLocationServicee
+from ..services.location.nyt import NYTLocationServicee
+from app.services.location.__init__ import LocationServicer
 
 class DataSourceSingletonMeta(type):
     """
-    access point to the DataSourceSingleton
+    access point to the DataSource 
     """
+
     _instances = {}
 
     def __call__(cls, *args, **kwargs):
@@ -22,9 +24,9 @@ def __call__(cls, *args, **kwargs):
 
 class DataSourceSingleton(metaclass=DataSourceSingletonMeta):
         DATA_SOURCES = {
-            "jhu": JhuLocationService(),
-            "csbs": CSBSLocationService(),
-            "nyt": NYTLocationService(),
+            "jhu": LocationServicer(JhuLocationServicee()),
+            "csbs": LocationServicer(CSBSLocationServicee()),
+            "nyt": LocationServicer(NYTLocationServicee()),
         }
         def get_data_source(self, dataSource):
             return self.DATA_SOURCES.get(dataSource.lower())

app/services/location/__init__.py

@@ -2,27 +2,34 @@
 from abc import ABC, abstractmethod
 
 
-class LocationService(ABC):
+class LocationServicer: # The 'Remote' of the Pattern
     """
-    Service for retrieving locations.
+    Abstraction class handling the 'Front End' portion of the project
     """
-
     @abstractmethod
-    async def get_all(self):
-        """
-        Gets and returns all of the locations.
+    def __init__(self, implementation):
+        self.implementation = implementation
+    
+    @abstractmethod
+    def all_locations(self):
+        return self.implementation.get_all()
+    
+    @abstractmethod
+    def locations(self):
+        return self.implementation.get()
+
+class LocationServicee: # The 'Device' with the implmentation
+    """
+    Implementation Interface
+    """
+
+    def get_all(self):
+        # No implementation - interface method
+        pass
+
+    def get(self):
+        # No implementation - interface method
+        pass
+
 
-        :returns: The locations.
-        :rtype: List[Location]
-        """
-        raise NotImplementedError
 
-    @abstractmethod
-    async def get(self, id):  # pylint: disable=redefined-builtin,invalid-name
-        """
-        Gets and returns location with the provided id.
-
-        :returns: The location.
-        :rtype: Location
-        """
-        raise NotImplementedError

app/services/location/csbs.py

@@ -10,12 +10,12 @@
 from ...coordinates import Coordinates
 from ...location.csbs import CSBSLocation
 from ...utils import httputils
-from . import LocationService
+from . import LocationServicee
 
 LOGGER = logging.getLogger("services.location.csbs")
 
 
-class CSBSLocationService(LocationService):
+class CSBSLocationServicee(LocationServicee):
     """
     Service for retrieving locations from csbs
     """
@@ -30,7 +30,6 @@ async def get(self, loc_id):  # pylint: disable=arguments-differ
         locations = await self.get_all()
         return locations[loc_id]
 
-
 # Base URL for fetching data
 BASE_URL = "https://facts.csbs.org/covid-19/covid19_county.csv"
 

app/services/location/jhu.py

@@ -15,13 +15,13 @@
 from ...utils import countries
 from ...utils import date as date_util
 from ...utils import httputils
-from . import LocationService
+from . import LocationServicee
 
 LOGGER = logging.getLogger("services.location.jhu")
 PID = os.getpid()
 
 
-class JhuLocationService(LocationService):
+class JhuLocationServicee(LocationServicee):
     """
     Service for retrieving locations from Johns Hopkins CSSE (https://github.com/CSSEGISandData/COVID-19).
     """

app/services/location/nyt.py

@@ -11,12 +11,12 @@
 from ...location.nyt import NYTLocation
 from ...models import Timeline
 from ...utils import httputils
-from . import LocationService
+from . import LocationServicee
 
 LOGGER = logging.getLogger("services.location.nyt")
 
 
-class NYTLocationService(LocationService):
+class NYTLocationServicee(LocationServicee):
     """
     Service for retrieving locations from New York Times (https://github.com/nytimes/covid-19-data).
     """