mirror of https://github.com/rocboss/paopao-ce
alimy
3 years ago
parent
b4d56f37cb
commit
abfee0621f
@ -0,0 +1,28 @@
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package dao
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const (
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idxActNop indexActionT = iota + 1
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idxActCreatePost
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idxActUpdatePost
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idxActDeletePost
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idxActStickPost
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)
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type indexActionT uint8
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func (a indexActionT) String() string {
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switch a {
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case idxActNop:
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return "no operator"
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case idxActCreatePost:
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return "create post"
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case idxActUpdatePost:
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return "update post"
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case idxActDeletePost:
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return "delete post"
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case idxActStickPost:
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return "stick post"
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default:
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return "unknow action"
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}
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}
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@ -0,0 +1,112 @@
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package dao
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import (
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"github.com/rocboss/paopao-ce/internal/model"
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"github.com/sirupsen/logrus"
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)
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func (d *dataServant) IndexPosts(offset int, limit int) ([]*model.PostFormated, error) {
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if d.useCacheIndex {
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posts := d.atomicIndex.Load().([]*model.PostFormated)
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start := offset * limit
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end := start + limit
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if len(posts) >= end {
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logrus.Debugln("get index posts from cached")
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return posts[start:end], nil
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}
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}
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logrus.Debugf("get index posts from database but useCacheIndex: %t", d.useCacheIndex)
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return d.getIndexPosts(offset, limit)
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}
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func (d *dataServant) MergePosts(posts []*model.Post) ([]*model.PostFormated, error) {
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postIds := make([]int64, 0, len(posts))
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userIds := make([]int64, 0, len(posts))
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for _, post := range posts {
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postIds = append(postIds, post.ID)
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userIds = append(userIds, post.UserID)
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}
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postContents, err := d.GetPostContentsByIDs(postIds)
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if err != nil {
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return nil, err
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}
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users, err := d.GetUsersByIDs(userIds)
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if err != nil {
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return nil, err
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}
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userMap := make(map[int64]*model.UserFormated, len(users))
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for _, user := range users {
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userMap[user.ID] = user.Format()
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}
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contentMap := make(map[int64][]*model.PostContentFormated, len(postContents))
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for _, content := range postContents {
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contentMap[content.PostID] = append(contentMap[content.PostID], content.Format())
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}
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// 数据整合
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postsFormated := make([]*model.PostFormated, 0, len(posts))
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for _, post := range posts {
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postFormated := post.Format()
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postFormated.User = userMap[post.UserID]
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postFormated.Contents = contentMap[post.ID]
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postsFormated = append(postsFormated, postFormated)
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}
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return postsFormated, nil
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}
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func (d *dataServant) getIndexPosts(offset int, limit int) ([]*model.PostFormated, error) {
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posts, err := (&model.Post{}).List(d.engine, &model.ConditionsT{
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"ORDER": "is_top DESC, latest_replied_on DESC",
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}, offset, limit)
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if err != nil {
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logrus.Debugf("getIndexPosts err: %v", err)
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return nil, err
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}
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return d.MergePosts(posts)
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}
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func (d *dataServant) indexActive(act indexActionT) {
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select {
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case d.indexActionCh <- act:
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logrus.Debugf("send indexAction by chan: %s", act)
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default:
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go func(ch chan<- indexActionT, act indexActionT) {
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logrus.Debugf("send indexAction by goroutine: %s", act)
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ch <- act
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}(d.indexActionCh, act)
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}
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}
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func (d *dataServant) startIndexPosts() {
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var err error
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for {
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select {
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case <-d.checkTick.C:
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if len(d.indexPosts) == 0 {
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logrus.Debugf("index posts by checkTick")
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if d.indexPosts, err = d.getIndexPosts(0, d.maxIndexSize); err == nil {
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d.atomicIndex.Store(d.indexPosts)
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} else {
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logrus.Errorf("get index posts err: %v", err)
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}
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}
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case <-d.expireIndexTick.C:
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logrus.Debugf("expire index posts by expireIndexTick")
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d.indexPosts = nil
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d.atomicIndex.Store(d.indexPosts)
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case action := <-d.indexActionCh:
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switch action {
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case idxActCreatePost, idxActUpdatePost, idxActDeletePost, idxActStickPost:
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logrus.Debugf("remove index posts by action %s", action)
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d.indexPosts = nil
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d.atomicIndex.Store(d.indexPosts)
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default:
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// nop
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}
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}
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}
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}
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