dstpierre/gosaas

package cache

import (
    "bytes"
    "encoding/gob"
    "strings"
    "time"

    "github.com/go-redis/redis"
)

// Auth is used to get/set authentication related keys
type Auth struct{}

// Exists returns the authentication from cache.
func (x *Auth) Exists(key string, v interface{}) error {
    s, err := rc.Get(key).Result()
    if err != nil {
        if err == redis.Nil {
            return nil
        }
        return err
    }

    dec := gob.NewDecoder(strings.NewReader(s))
    return dec.Decode(v)
}

// Set cache this key (authentication) for 30 minutes.
func (x *Auth) Set(key string, v interface{}, expiration time.Duration) error {
    buf := bytes.NewBuffer(nil)
    enc := gob.NewEncoder(buf)
    if err := enc.Encode(v); err != nil {
        return err
    }

    return rc.Set(key, buf.String(), expiration).Err()
}