forked from gwuhaolin/livego
/
channel.go
executable file
·134 lines (112 loc) · 2.65 KB
/
channel.go
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package configure
import (
"fmt"
"github.com/joke15/livego/utils/uid"
"github.com/go-redis/redis/v7"
"github.com/patrickmn/go-cache"
log "github.com/sirupsen/logrus"
)
type RoomKeysType struct {
redisCli *redis.Client
localCache *cache.Cache
}
var RoomKeys = &RoomKeysType{
localCache: cache.New(cache.NoExpiration, 0),
}
var saveInLocal = true
func Init() {
saveInLocal = len(Config.GetString("redis_addr")) == 0
if saveInLocal {
return
}
RoomKeys.redisCli = redis.NewClient(&redis.Options{
Addr: Config.GetString("redis_addr"),
Password: Config.GetString("redis_pwd"),
DB: 0,
})
_, err := RoomKeys.redisCli.Ping().Result()
if err != nil {
log.Panic("Redis: ", err)
}
log.Info("Redis connected")
}
// set/reset a random key for channel
func (r *RoomKeysType) SetKey(channel string) (key string, err error) {
if !saveInLocal {
for {
key = uid.RandStringRunes(48)
if _, err = r.redisCli.Get(key).Result(); err == redis.Nil {
err = r.redisCli.Set(channel, key, 0).Err()
if err != nil {
return
}
err = r.redisCli.Set(key, channel, 0).Err()
return
} else if err != nil {
return
}
}
}
for {
key = uid.RandStringRunes(48)
if _, found := r.localCache.Get(key); !found {
r.localCache.SetDefault(channel, key)
r.localCache.SetDefault(key, channel)
break
}
}
return
}
func (r *RoomKeysType) GetKey(channel string) (newKey string, err error) {
if !saveInLocal {
if newKey, err = r.redisCli.Get(channel).Result(); err == redis.Nil {
newKey, err = r.SetKey(channel)
log.Debugf("[KEY] new channel [%s]: %s", channel, newKey)
return
}
return
}
var key interface{}
var found bool
if key, found = r.localCache.Get(channel); found {
return key.(string), nil
}
newKey, err = r.SetKey(channel)
log.Debugf("[KEY] new channel [%s]: %s", channel, newKey)
return
}
func (r *RoomKeysType) GetChannel(key string) (channel string, err error) {
if !saveInLocal {
return r.redisCli.Get(key).Result()
}
chann, found := r.localCache.Get(key)
if found {
return chann.(string), nil
} else {
return "", fmt.Errorf("%s does not exists", key)
}
}
func (r *RoomKeysType) DeleteChannel(channel string) bool {
if !saveInLocal {
return r.redisCli.Del(channel).Err() != nil
}
key, ok := r.localCache.Get(channel)
if ok {
r.localCache.Delete(channel)
r.localCache.Delete(key.(string))
return true
}
return false
}
func (r *RoomKeysType) DeleteKey(key string) bool {
if !saveInLocal {
return r.redisCli.Del(key).Err() != nil
}
channel, ok := r.localCache.Get(key)
if ok {
r.localCache.Delete(channel.(string))
r.localCache.Delete(key)
return true
}
return false
}