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authorToshiaki Takahashi <takahashi.tsc@ncos.nec.co.jp>2018-09-06 09:04:29 +0000
committerToshiaki Takahashi <takahashi.tsc@ncos.nec.co.jp>2018-09-07 06:03:01 +0000
commitd61931341176dad9ccff7c967a10d88fe54218fa (patch)
tree526457882d4abe0c38d2242d6daa311bf8ef51cf /src/dma/vendor/github.com/go-redis/redis/script.go
parent73abc060f31a6bf866fa1dad0a1a6efdfd94d775 (diff)
src: Add DMA localagent
Change-Id: Ibcee814fbc9a904448eeb368a1a26bbb69cf54aa Signed-off-by: Toshiaki Takahashi <takahashi.tsc@ncos.nec.co.jp>
Diffstat (limited to 'src/dma/vendor/github.com/go-redis/redis/script.go')
-rw-r--r--src/dma/vendor/github.com/go-redis/redis/script.go62
1 files changed, 62 insertions, 0 deletions
diff --git a/src/dma/vendor/github.com/go-redis/redis/script.go b/src/dma/vendor/github.com/go-redis/redis/script.go
new file mode 100644
index 00000000..09f36d93
--- /dev/null
+++ b/src/dma/vendor/github.com/go-redis/redis/script.go
@@ -0,0 +1,62 @@
+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
+}