mirror of
https://github.com/truewhile/MeBox.git
synced 2026-09-28 11:16:37 +08:00
truewhile
99 lines
3.5 KiB
Go
99 lines
3.5 KiB
Go
package service
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"encoding/hex"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
type embyItemsCacheValue struct {
|
|
Items []map[string]any `json:"items"`
|
|
TotalRecordCount int64 `json:"total_record_count"`
|
|
StartIndex int `json:"start_index"`
|
|
Artwork map[string]embyArtworkRef `json:"artwork,omitempty"`
|
|
}
|
|
|
|
type embyLatestCacheValue struct {
|
|
Items []map[string]any `json:"items"`
|
|
Artwork map[string]embyArtworkRef `json:"artwork,omitempty"`
|
|
}
|
|
|
|
type embyCountsCacheValue struct {
|
|
MovieCount int64 `json:"movie_count"`
|
|
SeriesCount int64 `json:"series_count"`
|
|
EpisodeCount int64 `json:"episode_count"`
|
|
ItemCount int64 `json:"item_count"`
|
|
}
|
|
|
|
func (e *EmbyService) embyItemsCacheKey(kind string, p ItemsParams) string {
|
|
includeTypes := append([]string(nil), p.IncludeItemTypes...)
|
|
filters := append([]string(nil), p.Filters...)
|
|
ids := append([]string(nil), p.IDs...)
|
|
sort.Strings(includeTypes)
|
|
sort.Strings(filters)
|
|
sort.Strings(ids)
|
|
sum := sha256.Sum256([]byte(strings.Join([]string{
|
|
kind,
|
|
p.UserID,
|
|
p.ParentID,
|
|
strings.Join(ids, ","),
|
|
p.SearchTerm,
|
|
strings.Join(includeTypes, ","),
|
|
strings.Join(filters, ","),
|
|
strconv.FormatBool(p.Recursive),
|
|
p.SortBy,
|
|
p.SortOrder,
|
|
strconv.Itoa(p.StartIndex),
|
|
strconv.Itoa(p.Limit),
|
|
formatSeasonIndexCacheKeyPart(p.SeasonIndex),
|
|
}, "|")))
|
|
return "media:emby:" + hex.EncodeToString(sum[:])
|
|
}
|
|
|
|
// formatSeasonIndexCacheKeyPart keeps "no season filter" distinct from "season 0"
|
|
// so a client's Season=0 (specials) request never reuses an unfiltered response.
|
|
func formatSeasonIndexCacheKeyPart(seasonIndex *int) string {
|
|
if seasonIndex == nil {
|
|
return "season:*"
|
|
}
|
|
return "season:" + strconv.Itoa(*seasonIndex)
|
|
}
|
|
|
|
func (e *EmbyService) embyLatestCacheKey(userID, parentID string, limit int) string {
|
|
// v2: payload tags for virtual artwork changed so clients drop cached placeholders.
|
|
sum := sha256.Sum256([]byte(strings.Join([]string{"latest-v2", userID, parentID, strconv.Itoa(limit)}, "|")))
|
|
return "media:emby:" + hex.EncodeToString(sum[:])
|
|
}
|
|
|
|
// embySimilarCacheKey 是「相似推荐」结果的缓存键。
|
|
//
|
|
// userID 必须参与键名：候选集的可见性（AllowedLibraryIDs、NSFW）由用户决定，
|
|
// 混用会把别的用户可见的条目推荐给当前用户。limit 同理影响结果条数与排序。
|
|
func (e *EmbyService) embySimilarCacheKey(mediaID, userID string, limit int) string {
|
|
sum := sha256.Sum256([]byte(strings.Join([]string{"similar-v1", mediaID, userID, strconv.Itoa(limit)}, "|")))
|
|
return "media:emby:" + hex.EncodeToString(sum[:])
|
|
}
|
|
|
|
// defaultEmbyLatestCacheTTLSeconds 是 Emby「最新添加」缓存的兜底时长。
|
|
const defaultEmbyLatestCacheTTLSeconds = 300
|
|
|
|
// embyLatestCacheTTLSeconds 返回「最新添加」列表的缓存时长。它刻意比通用
|
|
// 媒体缓存更长：客户端刷新首页时会同时请求全部媒体库的 Latest（生产环境
|
|
// 观察到 73 个并发），缓存一旦集中过期，这批请求会同时穿透并各自重建
|
|
// payload。延长后稳态下几乎全部命中缓存，冷启动频率也随之下降。
|
|
func (e *EmbyService) embyLatestCacheTTLSeconds() int {
|
|
if e == nil || e.cfg == nil || e.cfg.Cache.EmbyLatestTTLSeconds < 1 {
|
|
return defaultEmbyLatestCacheTTLSeconds
|
|
}
|
|
return e.cfg.Cache.EmbyLatestTTLSeconds
|
|
}
|
|
|
|
func (e *EmbyService) mediaCacheTTLSeconds() int {
|
|
if e == nil || e.cfg == nil || e.cfg.Cache.MediaTTLSeconds < 1 {
|
|
return 90
|
|
}
|
|
return e.cfg.Cache.MediaTTLSeconds
|
|
}
|