[2676] Reuse constants for remote loadzone command

src/bin/ddns/ddns.py.in

@@ -32,6 +32,8 @@ import isc.util.cio.socketsession
 import isc.server_common.tsig_keyring
 from isc.server_common.dns_tcp import DNSTCPContext
 from isc.datasrc import DataSourceClient
+from isc.server_common.auth_command import AUTH_LOADZONE_COMMAND, \
+    auth_loadzone_params
 import select
 import time
 import errno
@@ -564,8 +566,8 @@ class DDNSServer:
 
     def __notify_auth(self, zname, zclass):
         '''Notify auth of the update, if necessary.'''
-        param = {'origin': zname.to_text(), 'class': zclass.to_text()}
-        self.__notify_update(AUTH_MODULE_NAME, 'loadzone', param, zname,
+        self.__notify_update(AUTH_MODULE_NAME, AUTH_LOADZONE_COMMAND,
+                             auth_loadzone_params(zname, zclass), zname,
                              zclass)
 
     def __notify_xfrout(self, zname, zclass):

src/lib/python/isc/server_common/auth_command.py

@@ -22,6 +22,13 @@ from isc.log_messages.server_common_messages import *
 from isc.server_common.logger import logger
 
 AUTH_MODULE_NAME = 'Auth'
+AUTH_LOADZONE_COMMAND = 'loadzone'
+
+def auth_loadzone_params(zone_name, zone_class):
+    return {
+        "origin": zone_name.to_text(),
+        "class": zone_class.to_text()
+    }
 
 def auth_loadzone_command(module_cc, zone_name, zone_class):
     '''Create a 'loadzone' command with a given zone for Auth server.
@@ -50,8 +57,5 @@ def auth_loadzone_command(module_cc, zone_name, zone_class):
     # to notification-driven approach, at which point the function would
     # be changed a lot.
 
-    param = {
-        "origin": zone_name.to_text(),
-        "class": zone_class.to_text()
-    }
-    return create_command("loadzone", param)
+    return create_command(AUTH_LOADZONE_COMMAND,
+                          auth_loadzone_params(zone_name, zone_class))