Merge pull request #11 from tangwz/master

try_hosts's connect_to_host(host) no need select(db).

Author: pintsized

lib/resty/redis/connector.lua

@@ -4,12 +4,9 @@ local sentinel = require "resty.redis.sentinel"
 
 
 local ipairs, setmetatable, pcall = ipairs, setmetatable, pcall
-local ngx_null = ngx.null
 local ngx_log = ngx.log
-local ngx_DEBUG = ngx.DEBUG
 local ngx_ERR = ngx.ERR
 local ngx_re_match = ngx.re.match
-local tbl_insert = table.insert
 local tbl_remove = table.remove
 local tbl_sort = table.sort
 
@@ -235,7 +232,9 @@ function _M.connect_to_host(self, host)
             end
         end
 
-        r:select(host.db)
+        if host.db ~= nil then
+            r:select(host.db)
+        end
         return r, nil
     end
 end