harbor/make/photon/chartserver/redis.patch

diff --git a/cmd/chartmuseum/main.go b/cmd/chartmuseum/main.go
index 8fd7349..eb67ddf 100644
--- a/cmd/chartmuseum/main.go
+++ b/cmd/chartmuseum/main.go
@@ -282,12 +282,23 @@ func storeFromConfig(conf *config.Config) cache.Store {
 	switch cacheFlag {
 	case "redis":
 		store = redisCacheFromConfig(conf)
+	case "redis_sentinel":
+		store = redisSentinelCacheFromConfig(conf)
 	default:
 		crash("Unsupported cache store: ", cacheFlag)
 	}
 
 	return store
 }
+func redisSentinelCacheFromConfig(conf *config.Config) cache.Store {
+	crashIfConfigMissingVars(conf, []string{"cache.redis.addr", "cache.redis.mastername"})
+	return cache.Store(cache.NewRedisSentinelStore(
+		conf.GetString("cache.redis.mastername"),
+		strings.Split(conf.GetString("cache.redis.addr"), ","),
+		conf.GetString("cache.redis.password"),
+		conf.GetInt("cache.redis.db"),
+	))
+}
 
 func redisCacheFromConfig(conf *config.Config) cache.Store {
 	crashIfConfigMissingVars(conf, []string{"cache.redis.addr"})
diff --git a/pkg/cache/redis_sentinel.go b/pkg/cache/redis_sentinel.go
new file mode 100644
index 0000000..0c73427
--- /dev/null
+++ b/pkg/cache/redis_sentinel.go
@@ -0,0 +1,18 @@
+package cache
+
+import (
+	"github.com/go-redis/redis"
+)
+
+// NewRedisStore creates a new RedisStore
+func NewRedisSentinelStore(masterName string, sentinelAddrs []string, password string, db int) *RedisStore {
+	store := &RedisStore{}
+	redisClientOptions := &redis.FailoverOptions{
+		MasterName:    masterName,
+		SentinelAddrs: sentinelAddrs,
+		Password:      password,
+		DB:            db,
+	}
+	store.Client = redis.NewFailoverClient(redisClientOptions)
+	return store
+}
diff --git a/pkg/config/vars.go b/pkg/config/vars.go
index 638eb49..4f036c9 100644
--- a/pkg/config/vars.go
+++ b/pkg/config/vars.go
@@ -246,10 +246,19 @@ var configVars = map[string]configVar{
 		Default: "",
 		CLIFlag: cli.StringFlag{
 			Name:   "cache-redis-addr",
-			Usage:  "address of Redis service (host:port)",
+			Usage:  "address of Redis service (host:port), addresses of Redis+Sentinel service (host1:port1,host2:port2)",
 			EnvVar: "CACHE_REDIS_ADDR",
 		},
 	},
+	"cache.redis.mastername": {
+		Type:    stringType,
+		Default: "",
+		CLIFlag: cli.StringFlag{
+			Name:   "cache-redis-mastername",
+			Usage:  "address of Redis+Sentinel mastername",
+			EnvVar: "CACHE_REDIS_MASTERNAME",
+		},
+	},
 	"cache.redis.password": {
 		Type:    stringType,
 		Default: "",