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Move issue pin to an standalone table for querying performance (#33452)

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Noticed a SQL in gitea.com has a bigger load. It seems both `is_pull`
and `pin_order` are not indexed columns in the database.

```SQL
SELECT `id`, `repo_id`, `index`, `poster_id`, `original_author`, `original_author_id`, `name`, `content`, `content_version`, `milestone_id`, `priority`, `is_closed`, `is_pull`, `num_comments`, `ref`, `pin_order`, `deadline_unix`, `created_unix`, `updated_unix`, `closed_unix`, `is_locked`, `time_estimate` FROM `issue` WHERE (repo_id =?) AND (is_pull = 0) AND (pin_order > 0) ORDER BY pin_order
```

I came across a comment
https://github.com/go-gitea/gitea/pull/24406#issuecomment-1527747296
from @delvh , which presents a more reasonable approach. Based on this,
this PR will migrate all issue and pull request pin data from the
`issue` table to the `issue_pin` table. This change benefits larger
Gitea instances by improving scalability and performance.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
Lunny Xiao
2025-02-17 11:28:37 -08:00
committed by GitHub
parent f5a81f9636
commit 7df09e31fa
13 changed files with 396 additions and 218 deletions
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7
services/convert/issue.go
View File

@@ -41,6 +41,9 @@ func toIssue(ctx context.Context, doer *user_model.User, issue *issues_model.Iss
if err := issue.LoadAttachments(ctx); err != nil {
return &api.Issue{}
}
if err := issue.LoadPinOrder(ctx); err != nil {
return &api.Issue{}
}
apiIssue := &api.Issue{
ID: issue.ID,
@@ -55,7 +58,7 @@ func toIssue(ctx context.Context, doer *user_model.User, issue *issues_model.Iss
Comments: issue.NumComments,
Created: issue.CreatedUnix.AsTime(),
Updated: issue.UpdatedUnix.AsTime(),
PinOrder: issue.PinOrder,
PinOrder: util.Iif(issue.PinOrder == -1, 0, issue.PinOrder), // -1 means loaded with no pin order
}
if issue.Repo != nil {
@@ -122,6 +125,7 @@ func toIssue(ctx context.Context, doer *user_model.User, issue *issues_model.Iss
// ToIssueList converts an IssueList to API format
func ToIssueList(ctx context.Context, doer *user_model.User, il issues_model.IssueList) []*api.Issue {
result := make([]*api.Issue, len(il))
_ = il.LoadPinOrder(ctx)
for i := range il {
result[i] = ToIssue(ctx, doer, il[i])
}
@@ -131,6 +135,7 @@ func ToIssueList(ctx context.Context, doer *user_model.User, il issues_model.Iss
// ToAPIIssueList converts an IssueList to API format
func ToAPIIssueList(ctx context.Context, doer *user_model.User, il issues_model.IssueList) []*api.Issue {
result := make([]*api.Issue, len(il))
_ = il.LoadPinOrder(ctx)
for i := range il {
result[i] = ToAPIIssue(ctx, doer, il[i])
}