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|
package redis
import (
"crypto/sha1"
"encoding/hex"
"io"
"strings"
)
type scripter interface {
Eval(script string, keys []string, args []string) *Cmd
EvalSha(sha1 string, keys []string, args []string) *Cmd
ScriptExists(scripts ...string) *BoolSliceCmd
ScriptLoad(script string) *StringCmd
}
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) Load(c scripter) *StringCmd {
return c.ScriptLoad(s.src)
}
func (s *Script) Exists(c scripter) *BoolSliceCmd {
return c.ScriptExists(s.src)
}
func (s *Script) Eval(c scripter, keys []string, args []string) *Cmd {
return c.Eval(s.src, keys, args)
}
func (s *Script) EvalSha(c scripter, keys []string, args []string) *Cmd {
return c.EvalSha(s.hash, keys, args)
}
func (s *Script) Run(c *Client, keys []string, args []string) *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
}
|
