mirror of
https://github.com/iLoveElysia/openbilibili.git
synced 2026-06-07 21:48:31 -05:00
325 lines
9.1 KiB
Go
325 lines
9.1 KiB
Go
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package service
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import (
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"context"
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"encoding/json"
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"fmt"
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"go-common/app/service/bbq/common"
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"time"
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v1 "go-common/app/interface/bbq/app-bbq/api/http/v1"
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"go-common/app/interface/bbq/app-bbq/model"
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video "go-common/app/service/bbq/video/api/grpc/v1"
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"go-common/library/ecode"
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"go-common/library/log"
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bm "go-common/library/net/http/blademaster"
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"go-common/library/net/trace"
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xtime "go-common/library/time"
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)
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// FeedUpdateNum 关注页红点
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func (s *Service) FeedUpdateNum(c context.Context, mid int64) (res v1.FeedUpdateNumResponse, err error) {
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// 0. 获取关注链
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followedMid, err := s.dao.FetchFollowList(c, mid)
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if err != nil {
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log.Errorv(c, log.KV("log", "fetch follow fail"), log.KV("mid", mid), log.KV("err", err))
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return
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}
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if len(followedMid) == 0 {
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res.Num = 0
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log.V(1).Infov(c, log.KV("log", "no_follow"), log.KV("mid", mid))
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return
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}
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// 1. 获取mid上次浏览点
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pubTime, _ := s.dao.GetMIDLastPubtime(c, mid)
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// 2. 获取新的视频
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newlySvID, err := s.dao.FetchAvailableOutboxList(c, common.FeedStates, followedMid, false, 0, xtime.Time(pubTime), 1)
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if err != nil {
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log.Errorv(c, log.KV("log", "fetch available outbox list fail"), log.KV("mid", mid), log.KV("pubTime", pubTime))
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return
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}
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// 3. form rsp
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if len(newlySvID) == 0 {
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res.Num = 0
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} else {
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res.Num = 1
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}
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return
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}
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// FeedList 关注页短视屏列表
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func (s *Service) FeedList(c context.Context, req *v1.FeedListRequest) (res *v1.FeedListResponse, err error) {
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var (
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mid = req.MID
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markStr = req.Mark
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)
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res = new(v1.FeedListResponse)
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res.List = make([]*v1.SvDetail, 0)
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res.RecList = make([]*v1.SvDetail, 0)
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// 0.前期校验
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// 解析mark，获取last_svid
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var mark model.FeedMark
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isFirstPage := false
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// 关注up的总视频列表是否空
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needRecList := false
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if len(markStr) != 0 {
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var markData = []byte(markStr)
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err = json.Unmarshal(markData, &mark)
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if err != nil {
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err = ecode.ReqParamErr
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log.Errorv(c, log.KV("log", "mark_unmarshal"), log.KV("mark", markStr))
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return
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}
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log.V(1).Infov(c, log.KV("mark", markData))
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}
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if mark.IsRec {
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needRecList = true
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} else if mark.LastSvID == 0 {
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isFirstPage = true
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mark.LastSvID = model.MaxInt64
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mark.LastPubtime = xtime.Time(time.Now().Unix())
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// 更新最新浏览svid
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s.dao.SetMIDLastPubtime(c, mid, int64(mark.LastPubtime))
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}
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// 1. 需要获取详情的svid列表
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var svids []int64
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if !needRecList {
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// 1.获取关注链
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var followedMid []int64
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followedMid, err = s.dao.FetchFollowList(c, mid)
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if err != nil {
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log.Errorv(c, log.KV("log", "fetch_follow"), log.KV("mid", mid))
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return
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}
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// 无关注人，直接返回
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if len(followedMid) == 0 {
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res.HasMore = false
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needRecList = true
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log.V(1).Infov(c, log.KV("log", "no_follow"), log.KV("mid", mid))
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} else {
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// 2.获取svid列表
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svids, err = s.dao.FetchAvailableOutboxList(c, common.FeedStates, followedMid, true, mark.LastSvID, mark.LastPubtime, model.FeedListLen)
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if err != nil {
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log.Warnw(c, "log", "fetch available outbox list fail")
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return
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}
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// 为了保护列表，所以/2，后面切换获取逻辑就可以去掉了
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if len(svids) < model.FeedListLen/2 {
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res.HasMore = false
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// 关注人了，但是这些人没有发布过视频
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if len(svids) == 0 && isFirstPage {
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needRecList = true
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}
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} else {
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res.HasMore = true
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}
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}
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}
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// 如果第一页就是empty或者mark携带了is_rec，需要为用户推荐一些视频
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if needRecList {
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svids, err = s.dao.AttentionRecList(c, model.FeedListLen, mid, req.BUVID)
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if err != nil {
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log.Warnw(c, "log", "get attention feed rec fail")
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return
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}
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}
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// 2.获取sv信息列表
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var list []*v1.SvDetail
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// 2.0 获取sv详情
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detailMap, err := s.getVideoDetail(c, req.MID, req.Qn, req.Device, svids, true)
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if err != nil {
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log.Warnv(c, log.KV("log", "get video detail fail"))
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return
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} else if len(detailMap) == 0 {
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log.Warnv(c, log.KV("log", "feed list empty"), log.KV("svid_num", len(svids)))
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return
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}
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// 2.1 获取热评
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hots, hotErr := s.dao.ReplyHot(c, mid, svids)
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if hotErr != nil {
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log.Warnv(c, log.KV("log", "get hot reply fail"))
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}
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log.V(1).Infov(c, log.KV("log", "get_video_detail"), log.KV("req_size", len(svids)),
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log.KV("rsp_size", len(detailMap)))
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for _, svID := range svids {
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v, exists := detailMap[svID]
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if exists {
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if hots, ok := hots[svID]; ok {
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v.HotReply.Hots = hots
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}
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list = append(list, v)
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} else {
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log.Warnv(c, log.KV("log", "sv_not_found"), log.KV("mid", mid), log.KV("svid", svID))
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}
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}
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// 3. 组装回包，判断往哪个list塞数据
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var nextMark model.FeedMark
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if needRecList {
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res.RecList = list
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nextMark.IsRec = true
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} else {
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res.List = list
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if len(list) > 0 && res.HasMore {
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nextMark.LastSvID = list[len(list)-1].SVID
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nextMark.LastPubtime = list[len(list)-1].Pubtime
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}
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}
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jsonStr, _ := json.Marshal(nextMark) // marshal的时候相信库函数，不做err判断
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res.Mark = string(jsonStr)
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return
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}
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// SpaceSvList 个人空间视频列表
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func (s *Service) SpaceSvList(c context.Context, req *v1.SpaceSvListRequest) (res *v1.SpaceSvListResponse, err error) {
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// 0.前期校验
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// 这里就不校验up主是否存在
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res = new(v1.SpaceSvListResponse)
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res.List = make([]*v1.SvDetail, 0)
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upMid := req.UpMid
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if upMid == 0 {
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err = ecode.ReqParamErr
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log.Errorv(c, log.KV("log", "up mid is 0"), log.KV("up_mid", 0))
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return
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}
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// parseCursor
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cursor, cursorNext, err := parseCursor(req.CursorPrev, req.CursorNext)
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if err != nil {
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return
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}
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// 1. 如果是主人态，其第一页，则进行额外prepare_list
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if req.MID == req.UpMid && len(req.CursorNext) == 0 && len(req.CursorPrev) == 0 {
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prepareRes, tmpErr := s.videoClient.ListPrepareVideo(c, &video.PrepareVideoRequest{Mid: req.MID})
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if tmpErr != nil {
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log.Warnw(c, "log", "get prepare video fail", "mid", req.MID)
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} else {
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res.PrepareList = prepareRes.List
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}
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}
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// 2. 获取svid列表
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states := common.SpaceFanStates
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if req.MID == req.UpMid {
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states = common.SpaceOwnerStates
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}
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svids, err := s.dao.FetchAvailableOutboxList(c, states, []int64{upMid}, cursorNext, cursor.CursorID, cursor.CursorTime, req.Size)
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if err != nil {
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log.Infov(c, log.KV("log", "fetch_outbox_list"), log.KV("error", err))
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return
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}
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if len(svids) < req.Size/2 {
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res.HasMore = false
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if len(svids) == 0 {
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return
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}
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} else {
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res.HasMore = true
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}
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// 3.获取sv详情
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detailMap, err := s.svInfos(c, svids, req.MID, true)
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if err != nil {
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log.Errorv(c, log.KV("log", "get video detail fail"))
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return
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} else if len(detailMap) == 0 {
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log.Warnv(c, log.KV("log", "feed list empty"), log.KV("svid_num", len(svids)))
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return
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}
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for _, svID := range svids {
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item, exists := detailMap[svID]
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if exists {
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sv := new(v1.SvDetail)
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sv.VideoResponse = *item
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res.List = append(res.List, sv)
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} else {
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log.Warnv(c, log.KV("log", "sv_not_found"), log.KV("svid", svID))
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}
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}
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// query id
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tracer, _ := trace.FromContext(c)
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queryID := fmt.Sprintf("%s", tracer)
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// 4. 后处理，为每个item添加cursor值
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var itemCursor model.CursorValue
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for _, item := range res.List {
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itemCursor.CursorID = item.SVID
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itemCursor.CursorTime = item.Pubtime
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jsonStr, _ := json.Marshal(itemCursor) // marshal的时候相信库函数，不做err判断
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item.CursorValue = string(jsonStr)
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item.QueryID = queryID
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}
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return
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}
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// getVideoDetail 返回SvDetail的列表，返回的list顺序和svids顺序一致，但不保证svid都能出现在list中
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func (s *Service) getVideoDetail(c context.Context, mid int64, qn int64, device *bm.Device, svids []int64, fullVersion bool) (res map[int64]*v1.SvDetail, err error) {
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res = make(map[int64]*v1.SvDetail)
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if len(svids) == 0 {
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return
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}
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// 拉取视频详情
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svRes, err := s.svInfos(c, svids, mid, true)
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if err != nil {
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log.Errorv(c, log.KV("log", "get video detail from dao fail"))
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return
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}
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log.V(1).Infov(c, log.KV("log", "get_video_detail"), log.KV("req_size", len(svids)), log.KV("rsp_size", len(svRes)))
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if len(svRes) == 0 {
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log.Warnv(c, log.KV("log", "get_video_detail_empty"), log.KV("req_size", len(svids)), log.KV("rsp_size", len(svRes)))
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return
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}
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// 开始组装回包
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currentTs := time.Now().Unix()
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for svid, svInfo := range svRes {
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sv := new(v1.SvDetail)
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// 组装video基础信息
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sv.VideoResponse = *svInfo
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if currentTs > int64(sv.Pubtime) {
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sv.ElapsedTime = currentTs - int64(sv.Pubtime)
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}
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res[svid] = sv
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}
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return
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}
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// parseCursor从cursor_prev和cursor_next，判断请求的方向，以及生成cursor
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func parseCursor(cursorPrev string, cursorNext string) (cursor model.CursorValue, directionNext bool, err error) {
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// 判断是向前还是向后查询
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directionNext = true
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cursorStr := cursorNext
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if len(cursorNext) == 0 && len(cursorPrev) > 0 {
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directionNext = false
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cursorStr = cursorPrev
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}
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// 解析cursor中的cursor_id
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if len(cursorStr) != 0 {
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var cursorData = []byte(cursorStr)
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err = json.Unmarshal(cursorData, &cursor)
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if err != nil {
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err = ecode.ReqParamErr
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return
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}
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}
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// 第一次请求的时候，携带的svid=0，需要转成max传给dao层
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if directionNext && cursor.CursorID == 0 {
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cursor.CursorID = model.MaxInt64
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cursor.CursorTime = xtime.Time(time.Now().Unix())
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}
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return
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}
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