Merge pull request #8742 from kpayson64/service_names_hint

Allow handlers to hint at the services they export

src/python/grpcio/grpc/__init__.py

@@ -849,6 +849,26 @@ class GenericRpcHandler(six.with_metaclass(abc.ABCMeta)):
     raise NotImplementedError()
 
 
+class ServiceRpcHandler(six.with_metaclass(abc.ABCMeta, GenericRpcHandler)):
+  """An implementation of RPC methods belonging to a service.
+
+  A service handles RPC methods with structured names of the form
+  '/Service.Name/Service.MethodX', where 'Service.Name' is the value
+  returned by service_name(), and 'Service.MethodX' is the service method
+  name.  A service can have multiple service methods names, but only a single
+  service name.
+  """
+
+  @abc.abstractmethod
+  def service_name(self):
+    """Returns this services name.
+
+    Returns:
+      The service name.
+    """
+    raise NotImplementedError()
+
+
 #############################  Server Interface  ###############################
 
 

src/python/grpcio/grpc/_utilities.py

@@ -53,13 +53,17 @@ class RpcMethodHandler(
   pass
 
 
-class DictionaryGenericHandler(grpc.GenericRpcHandler):
+class DictionaryGenericHandler(grpc.ServiceRpcHandler):
 
   def __init__(self, service, method_handlers):
+    self._name = service
     self._method_handlers = {
         _common.fully_qualified_method(service, method): method_handler
         for method, method_handler in six.iteritems(method_handlers)}
 
+  def service_name(self):
+    return self._name
+
   def service(self, handler_call_details):
     return self._method_handlers.get(handler_call_details.method)