plugin XEP-0045: log "failure" on configure error

sat/core/sat_main.py

@@ -596,12 +596,13 @@ class SAT(service.Service):
         """
         return unicode(self.memory.getConfig(section, name, ""))
 
-    def logErrback(self, failure_):
-        """generic errback logging
+    def logErrback(self, failure_, msg=_(u"Unexpected error: {failure_}")):
+        """Generic errback logging
 
+        @param msg(unicode): error message ("failure_" key will be use for format)
         can be used as last errback to show unexpected error
         """
-        log.error(_(u"Unexpected error: {}".format(failure_)))
+        log.error(msg.format(failure_=failure_))
         return failure_
 
     #  namespaces

sat/plugins/plugin_xep_0045.py

@@ -237,7 +237,8 @@ class XEP_0045(object):
             # a proper configuration management should be done
             log.debug(_(u"room locked !"))
             d = client._muc_client.configure(room.roomJID, {})
-            d.addErrback(lambda __: log.error(_(u'Error while configuring the room')))
+            d.addErrback(self.host.logErrback,
+                         msg=_(u'Error while configuring the room: {failure_}'))
         return room.fully_joined
 
     def _joinEb(self, failure, client, room_jid, nick, password):