[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/pool/pool_single.go b/vendor/github.com/go-redis/redis/v8/internal/pool/pool_single.go
new file mode 100644
index 0000000..5a3fde1
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v8/internal/pool/pool_single.go
@@ -0,0 +1,58 @@
+package pool
+
+import "context"
+
+type SingleConnPool struct {
+ pool Pooler
+ cn *Conn
+ stickyErr error
+}
+
+var _ Pooler = (*SingleConnPool)(nil)
+
+func NewSingleConnPool(pool Pooler, cn *Conn) *SingleConnPool {
+ return &SingleConnPool{
+ pool: pool,
+ cn: cn,
+ }
+}
+
+func (p *SingleConnPool) NewConn(ctx context.Context) (*Conn, error) {
+ return p.pool.NewConn(ctx)
+}
+
+func (p *SingleConnPool) CloseConn(cn *Conn) error {
+ return p.pool.CloseConn(cn)
+}
+
+func (p *SingleConnPool) Get(ctx context.Context) (*Conn, error) {
+ if p.stickyErr != nil {
+ return nil, p.stickyErr
+ }
+ return p.cn, nil
+}
+
+func (p *SingleConnPool) Put(ctx context.Context, cn *Conn) {}
+
+func (p *SingleConnPool) Remove(ctx context.Context, cn *Conn, reason error) {
+ p.cn = nil
+ p.stickyErr = reason
+}
+
+func (p *SingleConnPool) Close() error {
+ p.cn = nil
+ p.stickyErr = ErrClosed
+ return nil
+}
+
+func (p *SingleConnPool) Len() int {
+ return 0
+}
+
+func (p *SingleConnPool) IdleLen() int {
+ return 0
+}
+
+func (p *SingleConnPool) Stats() *Stats {
+ return &Stats{}
+}