func newSentinelDB() (DBer, error) {
clients := make([]*sentinel.Client, len(config.RedisSentinels))
for i, server := range config.RedisSentinels {
log.L.Printf("connecting to redis sentinel at %s", server)
c, err := sentinel.NewClient("tcp", server, config.RedisPoolSize, config.RedisSentinelGroup)
if err != nil {
log.L.Fatal(err)
}
clients[i] = c
}
return &sentinelDB{clients}, nil
}
func (t *Transport) Connect() error {
// TODO add retries in case of failures
if t.isSentinel() {
client, err := sentinel.NewClient("tcp", t.Address, t.MaxConnections, t.SentinelMaster)
if err != nil {
msg := fmt.Sprintf("Cannot connect to Redis host '%s': %s", t.Address, err)
log.Errorln(msg)
return err
}
t.sentinelClient = client
} else { // Redis standalone
// create redis pool
pool, err := pool.New("tcp", t.Address, t.MaxConnections)
if err != nil {
msg := fmt.Sprintf("Cannot connect to Redis host '%s': %s", t.Address, err)
log.Errorln(msg)
return err
}
t.pool = pool
}
// ping to ensure we are really connected
conn, err := t.getConnection()
defer conn.Close()
if err != nil {
log.Fatalf("Cannot ping to Redis host: %s", err.Error())
return err
}
t.pingRedis(conn)
return nil
}