/
groupcache.go
227 lines (187 loc) · 4.25 KB
/
groupcache.go
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package anidb
import (
"github.com/Kovensky/go-anidb/http"
"github.com/Kovensky/go-anidb/udp"
"github.com/Kovensky/go-fscache"
"strconv"
"strings"
"time"
)
var _ cacheable = &Group{}
func (g *Group) setCachedTS(ts time.Time) {
g.Cached = ts
}
func (g *Group) IsStale() bool {
if g == nil {
return true
}
return time.Now().Sub(g.Cached) > GroupCacheDuration
}
// Unique Group IDentifier
type GID int
func cacheGroup(g *Group) {
CacheSet(g.GID, "gid", "by-name", g.Name)
CacheSet(g.GID, "gid", "by-shortname", g.ShortName)
CacheSet(g, "gid", g.GID)
}
// Retrieves the Group from the cache.
func (gid GID) Group() *Group {
var g Group
if CacheGet(&g, "gid", gid) == nil {
return &g
}
return nil
}
// Retrieves a Group by its GID. Uses the UDP API.
func (adb *AniDB) GroupByID(gid GID) <-chan *Group {
key := []fscache.CacheKey{"gid", gid}
ch := make(chan *Group, 1)
if gid < 1 {
ch <- nil
close(ch)
return ch
}
ic := make(chan notification, 1)
go func() { ch <- (<-ic).(*Group); close(ch) }()
if intentMap.Intent(ic, key...) {
return ch
}
if !Cache.IsValid(InvalidKeyCacheDuration, key...) {
intentMap.NotifyClose((*Group)(nil), key...)
return ch
}
g := gid.Group()
if !g.IsStale() {
intentMap.NotifyClose(g, key...)
return ch
}
go func() {
reply := <-adb.udp.SendRecv("GROUP",
paramMap{"gid": gid})
if reply.Error() == nil {
g = parseGroupReply(reply)
cacheGroup(g)
} else if reply.Code() == 350 {
Cache.SetInvalid(key...)
}
intentMap.NotifyClose(g, key...)
}()
return ch
}
// Retrieves a Group by its name. Either full or short names are matched.
// Uses the UDP API.
func (adb *AniDB) GroupByName(gname string) <-chan *Group {
key := []fscache.CacheKey{"gid", "by-name", gname}
altKey := []fscache.CacheKey{"gid", "by-shortname", gname}
ch := make(chan *Group, 1)
if gname == "" {
ch <- nil
close(ch)
return ch
}
ic := make(chan notification, 1)
go func() {
gid := (<-ic).(GID)
if gid > 0 {
ch <- <-adb.GroupByID(gid)
}
close(ch)
}()
if intentMap.Intent(ic, key...) {
return ch
}
if !Cache.IsValid(InvalidKeyCacheDuration, key...) {
intentMap.NotifyClose(GID(0), key...)
return ch
}
gid := GID(0)
switch ts, err := Cache.Get(&gid, key...); {
case err == nil && time.Now().Sub(ts) < GroupCacheDuration:
intentMap.NotifyClose(gid, key...)
return ch
default:
switch ts, err = Cache.Get(&gid, altKey...); {
case err == nil && time.Now().Sub(ts) < GroupCacheDuration:
intentMap.NotifyClose(gid, key...)
return ch
}
}
go func() {
reply := <-adb.udp.SendRecv("GROUP",
paramMap{"gname": gname})
var g *Group
if reply.Error() == nil {
g = parseGroupReply(reply)
gid = g.GID
cacheGroup(g)
} else if reply.Code() == 350 {
Cache.SetInvalid(key...)
Cache.SetInvalid(altKey...)
}
intentMap.NotifyClose(gid, key...)
}()
return ch
}
func parseGroupReply(reply udpapi.APIReply) *Group {
parts := strings.Split(reply.Lines()[1], "|")
ints := make([]int64, len(parts))
for i := range parts {
ints[i], _ = strconv.ParseInt(parts[i], 10, 32)
}
irc := ""
if parts[7] != "" {
irc = "irc://" + parts[8] + "/" + parts[7][1:]
}
pic := ""
if parts[10] != "" {
pic = httpapi.AniDBImageBaseURL + parts[10]
}
rellist := strings.Split(parts[16], "'")
relations := make(map[GID]GroupRelationType, len(rellist))
for _, rel := range rellist {
r := strings.Split(rel, ",")
if len(r) < 2 {
continue
}
gid, _ := strconv.ParseInt(r[0], 10, 32)
typ, _ := strconv.ParseInt(r[1], 10, 32)
relations[GID(gid)] = GroupRelationType(typ)
}
ft := time.Unix(ints[11], 0)
if ints[11] == 0 {
ft = time.Time{}
}
dt := time.Unix(ints[12], 0)
if ints[12] == 0 {
dt = time.Time{}
}
lr := time.Unix(ints[14], 0)
if ints[14] == 0 {
lr = time.Time{}
}
la := time.Unix(ints[15], 0)
if ints[15] == 0 {
la = time.Time{}
}
return &Group{
GID: GID(ints[0]),
Name: parts[5],
ShortName: parts[6],
IRC: irc,
URL: parts[9],
Picture: pic,
Founded: ft,
Disbanded: dt,
// ignore ints[13]
LastRelease: lr,
LastActivity: la,
Rating: Rating{
Rating: float32(ints[1]) / 100,
VoteCount: int(ints[2]),
},
AnimeCount: int(ints[3]),
FileCount: int(ints[4]),
RelatedGroups: relations,
Cached: time.Now(),
}
}