"encoding/gob"
"strconv"
"strings"
- "sync"
"time"
)
return time.Now().Sub(e.Cached) > EpisodeCacheDuration
}
-var eidAidMap = map[EID]AID{}
-var eidAidLock = sync.RWMutex{}
-
// Unique Episode IDentifier.
type EID int
// Retrieves the Episode corresponding to this EID from the cache.
func (eid EID) Episode() *Episode {
- e, _ := caches.Get(episodeCache).Get(int(eid)).(*Episode)
- return e
+ var e Episode
+ if cache.Get(&e, "eid", eid) == nil {
+ return &e
+ }
+ return nil
}
func cacheEpisode(ep *Episode) {
- eidAidLock.Lock()
- defer eidAidLock.Unlock()
-
- eidAidMap[ep.EID] = ep.AID
- caches.Get(episodeCache).Set(int(ep.EID), ep)
+ cache.Set(ep.AID, "aid", "by-eid", ep.EID)
+ cache.Set(ep, "eid", ep.EID)
}
// Retrieves the Episode from the cache if possible.
//
// If the result is stale, then queries the UDP API to
-// know which AID owns this EID, then gets the episodes
+// know which AID owns this EID, then gets the episode
// from the Anime.
func (adb *AniDB) EpisodeByID(eid EID) <-chan *Episode {
+ keys := []cacheKey{"eid", eid}
ch := make(chan *Episode, 1)
- if e := eid.Episode(); e != nil && !e.IsStale() {
- ch <- e
- close(ch)
+ ic := make(chan Cacheable, 1)
+ go func() { ch <- (<-ic).(*Episode); close(ch) }()
+ if intentMap.Intent(ic, keys...) {
return ch
}
- ec := caches.Get(episodeCache)
- ic := make(chan Cacheable, 1)
- go func() { ch <- (<-ic).(*Episode); close(ch) }()
- if ec.Intent(int(eid), ic) {
+ if !cache.CheckValid(keys...) {
+ intentMap.Notify((*Episode)(nil), keys...)
+ return ch
+ }
+
+ if e := eid.Episode(); !e.IsStale() {
+ intentMap.Notify(e, keys...)
return ch
}
// The UDP API data is worse than the HTTP API anime data,
// try and get from the corresponding Anime
- eidAidLock.RLock()
- aid, ok := eidAidMap[eid]
- eidAidLock.RUnlock()
+ aid := AID(0)
+ ok := cache.Get(&aid, "aid", "by-eid", eid) == nil
udpDone := false
ok = true
aid = AID(id)
}
+ } else if reply.Code() == 340 {
+ cache.MarkInvalid(keys...)
} else {
break
}
break
} else {
// if this is somehow still a miss, then the EID<->AID map broke
- eidAidLock.Lock()
- delete(eidAidMap, eid)
- eidAidLock.Unlock()
-
+ cache.Delete("aid", "by-eid", eid)
ok = false
}
}
- // Caching (and channel broadcasting) done by AnimeByID
+ intentMap.Notify(e, keys...)
}()
return ch
}