Pass in the datasource as a option, instead of the lower level instance id.

This allows for others to use datasource functions if they desire to instead of being restricted.

+1 for future use ;)

cloudinit/handlers/boot_hook.py

@@ -32,10 +32,12 @@ LOG = logging.getLogger(__name__)
 
 
 class BootHookPartHandler(handlers.Handler):
-    def __init__(self, paths, instance_id, **_kwargs):
+    def __init__(self, paths, datasource, **_kwargs):
         handlers.Handler.__init__(self, PER_ALWAYS)
         self.boothook_dir = paths.get_ipath("boothooks")
-        self.instance_id = instance_id
+        self.instance_id = None
+        if datasource:
+            self.instance_id = datasource.get_instance_id()
 
     def list_types(self):
         return [

cloudinit/stages.py

@@ -287,7 +287,7 @@ class Init(object):
     def _default_userdata_handlers(self):
         opts = {
             'paths': self.paths,
-            'instance_id': self.datasource.get_instance_id(),
+            'datasource': self.datasource,
         }
         # TODO Hmmm, should we dynamically import these??
         def_handlers = [