add get buckets contrl

sunty

2020-08-20 9303b69ea569bcb5e581147543a3fd58e90d0d25

 extend/code/code.go

@@ -70,4 +70,5 @@

   UpgradeSuccess = &Code{http.StatusOK, true, "升级成功"}
   UpgradeFail    = &Code{http.StatusInternalServerError, false, "升级失败"}
   FailedQuery    = &Code{http.StatusInternalServerError, false, "查询失败"}
)