honor the hrn argument

diff --git a/sfa/methods/get_registries.py b/sfa/methods/get_registries.py
index 0d382d6..358874c 100644 (file)
--- a/sfa/methods/get_registries.py
+++ b/sfa/methods/get_registries.py
@@ -30,5 +30,7 @@ class get_registries(Method):
     def call(self, cred, xrn = None):
         hrn, type = urn_to_hrn(xrn)
         self.api.auth.check(cred, 'list')
-        registries = Registries(self.api)
-        return registries.interfaces.values()
+        registries = Registries(self.api).interfaces.values()
+        if hrn:
+            registries = [reg for reg in registries if reg['hrn'] == hrn] 
+        return registries