required casts for postgres support

Author: taddes

tools/tokenserver/database.py

@@ -192,7 +192,7 @@
     and downed = 0
     and backoff = 0
 order by
-    log(current_load) / log(capacity)
+    log(GREATEST(current_load, 1)) / log(capacity)
 limit 1
 """)
 

tools/tokenserver/update_node.py

@@ -83,9 +83,9 @@ def main(args=None):
     if opts.current_load is not None:
         kwds["current_load"] = opts.current_load
     if opts.backoff is not None:
-        kwds["backoff"] = opts.backoff
+        kwds["backoff"] = int(opts.backoff)
     if opts.downed is not None:
-        kwds["downed"] = opts.downed
+        kwds["downed"] = int(opts.downed)
 
     update_node(node_name, **kwds)
     return 0