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53 lines
1.1 KiB
53 lines
1.1 KiB
8 years ago
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package redis
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import (
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"crypto/sha1"
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"encoding/hex"
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"io"
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"strings"
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)
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type scripter interface {
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Eval(script string, keys []string, args []string) *Cmd
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EvalSha(sha1 string, keys []string, args []string) *Cmd
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ScriptExists(scripts ...string) *BoolSliceCmd
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ScriptLoad(script string) *StringCmd
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}
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type Script struct {
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src, hash string
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}
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func NewScript(src string) *Script {
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h := sha1.New()
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io.WriteString(h, src)
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return &Script{
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src: src,
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hash: hex.EncodeToString(h.Sum(nil)),
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}
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}
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func (s *Script) Load(c scripter) *StringCmd {
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return c.ScriptLoad(s.src)
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}
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func (s *Script) Exists(c scripter) *BoolSliceCmd {
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return c.ScriptExists(s.src)
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}
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func (s *Script) Eval(c scripter, keys []string, args []string) *Cmd {
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return c.Eval(s.src, keys, args)
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}
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func (s *Script) EvalSha(c scripter, keys []string, args []string) *Cmd {
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return c.EvalSha(s.hash, keys, args)
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}
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func (s *Script) Run(c *Client, keys []string, args []string) *Cmd {
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r := s.EvalSha(c, keys, args)
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if err := r.Err(); err != nil && strings.HasPrefix(err.Error(), "NOSCRIPT ") {
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return s.Eval(c, keys, args)
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}
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return r
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}
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