Convert to using ABCMeta to get abstract class failures immediately rather than on method use.

volatility/framework/interfaces/plugins.py

@@ -3,6 +3,7 @@ Created on 6 May 2013
 
 @author: mike
 """
+from abc import abstractmethod, ABCMeta
 
 from volatility.framework import validity
 from volatility.framework.interfaces import context as context_module
@@ -10,6 +11,7 @@ from volatility.framework.interfaces import context as context_module
 
 class PluginInterface(validity.ValidityRoutines):
     """Class that defines the interface all Plugins must maintain"""
+    __metaclass__ = ABCMeta
 
     def __init__(self, context):
         self.type_check(context, context_module.ContextInterface)
@@ -19,17 +21,18 @@ class PluginInterface(validity.ValidityRoutines):
     def context(self):
         return self._context
 
+    @abstractmethod
     def establish_context(self):
         """Alters the context to ensure the plugin can run.
 
         This function constructs the necessary address spaces and symbol spaces that the plugin will need.
         """
-        raise NotImplementedError("Abstract method establish_context must be overridden by plugins.")
 
+    @abstractmethod
     def plugin_options(self, config_group = None):
         """Modifies the passed in ConfigGroup object to contain the required options"""
-        raise NotImplementedError("Abstract method plugin_options must be overridden by plugins")
 
+    @abstractmethod
     def __call__(self, context):
         """Executes the functionality of the code