authentication for redis added

cachemdl/cache_redis.go

@@ -40,16 +40,18 @@ type RedisCache struct {
 	addPrefix bool           //
 	connected bool           // will be enabled if redis client connects to server
 
-	Addr       string        // redis server address, default "127.0.0.1:6379"
-	DB         int           // redis DB on provided server, default 0
+	Addr       string // redis server address, default "127.0.0.1:6379"
+	DB         int    // redis DB on provided server, default 0
+	Username   string
 	Password   string        //
 	Expiration time.Duration // this duration will be used for Set() method
 	Prefix     string        // this will be used for storing keys for provided project
 }
 
 type configRedis struct {
-	addr       string        // redis server address, default "127.0.0.1:6379"
-	db         int           // redis DB on provided server, default 0
+	addr       string // redis server address, default "127.0.0.1:6379"
+	db         int    // redis DB on provided server, default 0
+	username   string
 	password   string        //
 	expiration time.Duration // this duration will be used for Set() method
 	prefix     string        // this will be used for storing keys for provided project
@@ -82,9 +84,14 @@ func RedisWithExpiration(exp time.Duration) redisOption {
 		cfg.expiration = exp
 	}
 }
+func RedisWithUsername(username string) redisOption {
+	return func(cfg *configRedis) {
+		cfg.username = username
+	}
+}
 
 // Setup initializes redis cache for application. Must be called only once.
-func (rc *RedisCache) Setup(addr, password, prefix string, db int, exp time.Duration) {
+func (rc *RedisCache) Setup(addr, username, password, prefix string, db int, exp time.Duration) {
 
 	if rc == nil {
 		rc = new(RedisCache)
@@ -92,6 +99,7 @@ func (rc *RedisCache) Setup(addr, password, prefix string, db int, exp time.Dura
 
 	rc.Addr = addr
 	rc.Password = password
+	rc.Username = username
 	rc.DB = db
 	rc.Expiration = exp
 	rc.Prefix = prefix
@@ -99,6 +107,7 @@ func (rc *RedisCache) Setup(addr, password, prefix string, db int, exp time.Dura
 		Addr:     addr,
 		Password: password,
 		DB:       db,
+		Username: username,
 	}
 
 	rc.opt = &opt
@@ -132,6 +141,7 @@ func SetupRedisCache(opts ...redisOption) (*RedisCache, error) {
 
 	rc.Addr = cfg.addr
 	rc.Password = cfg.password
+	rc.Username = cfg.username
 	rc.DB = cfg.db
 	rc.Expiration = cfg.expiration
 	rc.Prefix = cfg.prefix
@@ -140,6 +150,7 @@ func SetupRedisCache(opts ...redisOption) (*RedisCache, error) {
 		Addr:     cfg.addr,
 		Password: cfg.password,
 		DB:       cfg.db,
+		Username: cfg.username,
 	}
 
 	rc.cli = redis.NewClient(rc.opt)