/
redis_seg.go
209 lines (195 loc) · 5.56 KB
/
redis_seg.go
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package dao
import (
"context"
"encoding/xml"
"fmt"
"go-common/app/interface/main/dm2/model"
"go-common/library/cache/redis"
"go-common/library/log"
)
const (
_keyIdx = "i_%d_%d_%d_%d" // normal dm segment sortedset(s_type_oid_cnt_n, ctime, dmid)
_keyIdxSub = "s_%d_%d" // subtitle dm sortedset(s_type_oid, progress, dmid)
_keyIdxSpe = "spe_%d_%d" // special dm sortedset(spe_type_oid, progress,dmid)
_keyIdxContent = "c_%d_%d" // dm content hash(d_type_oid, dmid, xml)
)
func keyIdx(tp int32, oid, cnt, n int64) string {
return fmt.Sprintf(_keyIdx, tp, oid, cnt, n)
}
// keyIdxSub return dm idx key.
func keyIdxSub(tp int32, oid int64) string {
return fmt.Sprintf(_keyIdxSub, tp, oid)
}
// keyIdxContent return key of different dm.
func keyIdxContent(tp int32, oid int64) string {
return fmt.Sprintf(_keyIdxContent, tp, oid)
}
func keyIdxSpecial(tp int32, oid int64) string {
return fmt.Sprintf(_keyIdxSpe, tp, oid)
}
// DMIDSubtitlesCache return subtitle dm ids.
func (d *Dao) DMIDSubtitlesCache(c context.Context, tp int32, oid int64, ps, pe, limit int64) (dmids []int64, err error) {
var (
conn = d.dmSegRds.Get(c)
keySub = keyIdxSub(tp, oid)
)
defer conn.Close()
if dmids, err = redis.Int64s(conn.Do("ZRANGEBYSCORE", keySub, ps, pe, "LIMIT", 0, limit)); err != nil {
log.Error("conn.DO(ZRANGEBYSCORE %s) error(%v)", keySub, err)
}
if len(dmids) > 0 {
PromCacheHit("dm_seg_dmid", 1)
} else {
PromCacheMiss("dm_seg_dmid", 1)
}
return
}
// DMIDCache return dm index id.
func (d *Dao) DMIDCache(c context.Context, tp int32, oid int64, cnt, n, limit int64) (dmids []int64, err error) {
var (
conn = d.dmSegRds.Get(c)
keyIdx = keyIdx(tp, oid, cnt, n)
)
defer conn.Close()
if dmids, err = redis.Int64s(conn.Do("ZRANGE", keyIdx, 0, -1)); err != nil {
log.Error("DMIDSPCache.conn.DO(ZRANGEBYSCORE %s) error(%v)", keyIdx, err)
}
if len(dmids) > 0 {
PromCacheHit("dm_seg_dmid", 1)
} else {
PromCacheMiss("dm_seg_dmid", 1)
}
return
}
// IdxContentCache get xml info by dmid.
func (d *Dao) IdxContentCache(c context.Context, tp int32, oid int64, dmids []int64) (res []byte, missed []int64, err error) {
var (
k int
dmid int64
values [][]byte
key = keyIdxContent(tp, oid)
args = []interface{}{key}
)
for _, dmid = range dmids {
args = append(args, dmid)
}
conn := d.dmSegRds.Get(c)
defer conn.Close()
if values, err = redis.ByteSlices(conn.Do("HMGET", args...)); err != nil {
log.Error("conn.Do(HMGET %v) error(%v)", args, err)
if err == redis.ErrNil {
return nil, nil, nil
}
return
}
for k, dmid = range dmids {
if len(values[k]) == 0 {
missed = append(missed, dmid)
continue
}
res = append(res, values[k]...)
}
PromCacheMiss("dmid_content", int64(len(missed)))
PromCacheHit("dmid_content", int64(len(dmids)-len(missed)))
return
}
// IdxContentCacheV2 get elems info by dmid.
func (d *Dao) IdxContentCacheV2(c context.Context, tp int32, oid int64, dmids []int64) (elems []*model.Elem, missed []int64, err error) {
var (
k int
dmid int64
values [][]byte
key = keyIdxContent(tp, oid)
args = []interface{}{key}
)
for _, dmid = range dmids {
args = append(args, dmid)
}
conn := d.dmSegRds.Get(c)
defer conn.Close()
if values, err = redis.ByteSlices(conn.Do("HMGET", args...)); err != nil {
if err == redis.ErrNil {
err = nil
missed = dmids
} else {
log.Error("conn.Do(HMGET %v) error(%v)", args, err)
}
return
}
for k, dmid = range dmids {
if len(values[k]) == 0 {
missed = append(missed, dmid)
continue
}
elem, err := d.xmlToElem(values[k])
if err != nil {
missed = append(missed, dmid)
continue
}
elems = append(elems, elem)
}
PromCacheMiss("dmid_elem", int64(len(missed)))
PromCacheHit("dmid_elem", int64(len(dmids)-len(missed)))
return
}
// 在缓存过渡期将<d p="弹幕ID,弹幕属性,播放时间,弹幕模式,字体大小,颜色,发送时间,弹幕池,用户hash id">弹幕内容</d>
// 装换为 model.Elem结构
func (d *Dao) xmlToElem(data []byte) (e *model.Elem, err error) {
var v struct {
XMLName xml.Name `xml:"d"`
Attribute string `xml:"p,attr"`
Content string `xml:",chardata"`
}
if err = xml.Unmarshal(data, &v); err != nil {
return
}
e = &model.Elem{Content: v.Content, Attribute: v.Attribute}
return
}
// AddIdxContentCache add index content cache to redis.
func (d *Dao) AddIdxContentCache(c context.Context, tp int32, oid int64, dms []*model.DM, realname bool) (err error) {
var (
key string
conn = d.dmSegRds.Get(c)
)
defer conn.Close()
for _, dm := range dms {
key = keyIdxContent(tp, oid)
if err = conn.Send("HSET", key, dm.ID, dm.ToXMLSeg(realname)); err != nil {
log.Error("conn.Send(HSET %s,%v) error(%v)", key, dm, err)
return
}
}
if err = conn.Send("EXPIRE", key, d.dmSegExpire); err != nil {
log.Error("conn.Send(EXPIRE %s) error(%v)", key, err)
return
}
if err = conn.Flush(); err != nil {
log.Error("conn.Flush() error(%v)", err)
return
}
for i := 0; i <= len(dms); i++ {
if _, err = conn.Receive(); err != nil {
log.Error("conn.Receive() error(%v)", err)
return
}
}
return
}
// DMIDSpecialsCache return special dmids
func (d *Dao) DMIDSpecialsCache(c context.Context, tp int32, oid int64) (dmids []int64, err error) {
var (
conn = d.dmSegRds.Get(c)
keySpe = keyIdxSpecial(tp, oid)
)
defer conn.Close()
if dmids, err = redis.Int64s(conn.Do("ZRANGE", keySpe, 0, -1)); err != nil {
log.Error("conn.DO(ZRANGE %s) error(%v)", keySpe, err)
}
if len(dmids) > 0 {
PromCacheHit("dm_spe_dmid", 1)
} else {
PromCacheMiss("dm_spe_dmid", 1)
}
return
}