performance_schema/file_summary_by_instance/cache.go

   1 package file_summary_by_instance
   2
   3 import (
   4         "errors"
   5
   6         //      "github.com/sjmudd/pstop/lib"
   7 )
   8
   9 // provide a mapping from filename to table.schema etc
  10
  11 var (
  12         mapped_name    map[string]string
  13         total, matched int
  14 )
  15
  16 func init() {
  17         // setup on startup
  18         mapped_name = make(map[string]string)
  19 }
  20
  21 func get_from_cache(key string) (result string, err error) {
  22         total++
  23         if result, ok := mapped_name[key]; ok {
  24                 matched++
  25                 //              lib.Logger.Println("matched/total:", matched, total)
  26                 return result, nil
  27         } else {
  28                 //              lib.Logger.Println("matched/total:", matched, total)
  29                 return "", errors.New("Not found")
  30         }
  31 }
  32
  33 func save_to_cache(key, value string) string {
  34         mapped_name[key] = value
  35         return value
  36 }