63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
|
package redis
|
||
|
|
|
||
|
|
import (
|
||
|
|
"crypto/sha1"
|
||
|
|
"encoding/hex"
|
||
|
|
"io"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
type scripter interface {
|
||
|
|
Eval(script string, keys []string, args ...interface{}) *Cmd
|
||
|
|
EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd
|
||
|
|
ScriptExists(hashes ...string) *BoolSliceCmd
|
||
|
|
ScriptLoad(script string) *StringCmd
|
||
|
|
}
|
||
|
|
|
||
|
|
var _ scripter = (*Client)(nil)
|
||
|
|
var _ scripter = (*Ring)(nil)
|
||
|
|
var _ scripter = (*ClusterClient)(nil)
|
||
|
|
|
||
|
|
type Script struct {
|
||
|
|
src, hash string
|
||
|
|
}
|
||
|
|
|
||
|
|
func NewScript(src string) *Script {
|
||
|
|
h := sha1.New()
|
||
|
|
io.WriteString(h, src)
|
||
|
|
return &Script{
|
||
|
|
src: src,
|
||
|
|
hash: hex.EncodeToString(h.Sum(nil)),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s *Script) Hash() string {
|
||
|
|
return s.hash
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s *Script) Load(c scripter) *StringCmd {
|
||
|
|
return c.ScriptLoad(s.src)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s *Script) Exists(c scripter) *BoolSliceCmd {
|
||
|
|
return c.ScriptExists(s.hash)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s *Script) Eval(c scripter, keys []string, args ...interface{}) *Cmd {
|
||
|
|
return c.Eval(s.src, keys, args...)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s *Script) EvalSha(c scripter, keys []string, args ...interface{}) *Cmd {
|
||
|
|
return c.EvalSha(s.hash, keys, args...)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Run optimistically uses EVALSHA to run the script. If script does not exist
|
||
|
|
// it is retried using EVAL.
|
||
|
|
func (s *Script) Run(c scripter, keys []string, args ...interface{}) *Cmd {
|
||
|
|
r := s.EvalSha(c, keys, args...)
|
||
|
|
if err := r.Err(); err != nil && strings.HasPrefix(err.Error(), "NOSCRIPT ") {
|
||
|
|
return s.Eval(c, keys, args...)
|
||
|
|
}
|
||
|
|
return r
|
||
|
|
}
|