[VOL-3860] redis client support in voltha-lib-go
redis client support has been added in this patch. There are two
types client `redis` and `redis-sentinel` to connect a redis instance.
redis-sentinel is required to be able to find the master redis
instance from a redis-sentinel process. See redis-sentinel usage
https://redis.io/topics/sentinel and
https://pkg.go.dev/github.com/go-redis/redis/v8#NewFailoverClient
for more information. If there is no need to have any failover
mechanism then the redis client type is the option to choose.
Change-Id: I997ed92115a9d565df632c6dd8184b9bab77b991
diff --git a/vendor/github.com/go-redis/redis/v8/internal/internal.go b/vendor/github.com/go-redis/redis/v8/internal/internal.go
new file mode 100644
index 0000000..4a59c59
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v8/internal/internal.go
@@ -0,0 +1,29 @@
+package internal
+
+import (
+ "time"
+
+ "github.com/go-redis/redis/v8/internal/rand"
+)
+
+func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration {
+ if retry < 0 {
+ panic("not reached")
+ }
+ if minBackoff == 0 {
+ return 0
+ }
+
+ d := minBackoff << uint(retry)
+ if d < minBackoff {
+ return maxBackoff
+ }
+
+ d = minBackoff + time.Duration(rand.Int63n(int64(d)))
+
+ if d > maxBackoff || d < minBackoff {
+ d = maxBackoff
+ }
+
+ return d
+}