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Improve get feed with pagination (#31821) 

Fix #31752

@somera

---------

Co-authored-by: delvh <dev.lh@web.de>
This commit is contained in:
Lunny Xiao 2024-09-03 03:05:09 +08:00 committed by GitHub
parent 83f37f6302
commit 85b1f3080c
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GPG Key ID: B5690EEEBB952194
1 changed files with 39 additions and 10 deletions
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33
models/activities/action.go
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@ -450,6 +450,10 @@ func GetFeeds(ctx context.Context, opts GetFeedsOptions) (ActionList, int64, err
return nil, 0, err
}
actions := make([]*Action, 0, opts.PageSize)
var count int64
if opts.Page < 10 { // TODO: why it's 10 but other values? It's an experience value.
sess := db.GetEngine(ctx).Where(cond).
Select("`action`.*"). // this line will avoid select other joined table's columns
Join("INNER", "repository", "`repository`.id = `action`.repo_id")
@ -457,11 +461,36 @@ func GetFeeds(ctx context.Context, opts GetFeedsOptions) (ActionList, int64, err
opts.SetDefaultValues()
sess = db.SetSessionPagination(sess, &opts)
actions := make([]*Action, 0, opts.PageSize)
count, err := sess.Desc("`action`.created_unix").FindAndCount(&actions)
count, err = sess.Desc("`action`.created_unix").FindAndCount(&actions)
if err != nil {
return nil, 0, fmt.Errorf("FindAndCount: %w", err)
}
} else {
// First, only query which IDs are necessary, and only then query all actions to speed up the overall query
sess := db.GetEngine(ctx).Where(cond).
Select("`action`.id").
Join("INNER", "repository", "`repository`.id = `action`.repo_id")
opts.SetDefaultValues()
sess = db.SetSessionPagination(sess, &opts)
actionIDs := make([]int64, 0, opts.PageSize)
if err := sess.Table("action").Desc("`action`.created_unix").Find(&actionIDs); err != nil {
return nil, 0, fmt.Errorf("Find(actionsIDs): %w", err)
}
count, err = db.GetEngine(ctx).Where(cond).
Table("action").
Cols("`action`.id").
Join("INNER", "repository", "`repository`.id = `action`.repo_id").Count()
if err != nil {
return nil, 0, fmt.Errorf("Count: %w", err)
}
if err := db.GetEngine(ctx).In("`action`.id", actionIDs).Desc("`action`.created_unix").Find(&actions); err != nil {
return nil, 0, fmt.Errorf("Find: %w", err)
}
}
if err := ActionList(actions).LoadAttributes(ctx); err != nil {
return nil, 0, fmt.Errorf("LoadAttributes: %w", err)