package main

import (
	"encoding/json"
	"github.com/garyburd/redigo/redis"
	"log"
)

const (
	cache_prefix = "status_"
)

func CacheHosts(prefix string, h []Host) error {
	c := pool.Get()
	js, err := json.Marshal(h)
	if err != nil {
		log.Println("Serizaling to JSON failed.")
		return err
	}
	c.Do("SET", prefix, js)
	return nil
}

func GetCache(key string) (string, error) {
	c := pool.Get()
	return redis.String(c.Do("GET", key))
}

func DelCache(key string) error {
	c := pool.Get()
	_, err := c.Do("DEL", key)
	return err
}

func FillCache() error {
	h := []Host{}
	Db.Find(&h)
	return CacheHosts(cache_prefix+"database", h)
}