package utils import ( "context" "encoding/json" "fmt" "time" "github.com/go-redis/redis/v8" "github.com/sirupsen/logrus" ) //Redis context var ctx = context.Background() //Redis client as global var var redisDb *redis.Client //Initialize the Redis Database //Requires a conf struct //Return a *redis.Client func RedisDatabase(conf *Conf) *redis.Client { logrus.WithFields(logrus.Fields{"ip": conf.Redis.Ip, "port": conf.Redis.Port}).Infof("REDIS : Connection to DB") rdb := redis.NewClient(&redis.Options{ Addr: fmt.Sprintf("%s:%v", conf.Redis.Ip, conf.Redis.Port), Password: conf.Redis.Password, DB: conf.Redis.Db, }) //Connect to the DB //Test Redis connection err := rdb.Set(ctx, "alive", 1, 0).Err() CheckErr(err) alive, err := rdb.Get(ctx, "alive").Result() CheckErr(err) if alive != "1" { logrus.WithFields(logrus.Fields{"alive": alive}).Panic("REDIS : Test not passed. alive != 1") } CheckErr(err) logrus.WithFields(logrus.Fields{"db": conf.Redis.Db}).Info("REDIS : Successfull connection") redisDb = rdb return rdb } //Check for a record in the Redis database //Requires the redis key (as string) and the record to check (struct) //Return a Record (struct) and error (if any) func redisCheckForRecord(redisKey string, entry Record) (Record, error) { val, err := redisDb.Get(ctx, redisKey).Result() //If Record in Redis cache if err == nil { err := json.Unmarshal([]byte(val), &entry) logrus.Debugf("REDIS : %s => %s", redisKey, entry.Content) return entry, err } else { //Else return nil return entry, redis.Nil } } //Add a record in the Redis database //Return an error (if any) func redisSet(c *redis.Client, key string, ttl time.Duration, value interface{}) error { p, err := json.Marshal(value) if err != nil { return err } return c.Set(ctx, key, p, ttl).Err() }