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refactor: make db iterate context aware (#27710)

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the iteration will run until finished atm.

this changes it by checking if if the context got canceled before each
run of a loop sequence is executed

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6543 2023-10-21 04:05:29 +02:00 committed by GitHub
parent 510d07506e
commit b2f828db5e
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2 changed files with 40 additions and 30 deletions
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33
models/db/iterate.go
View File

@ -17,22 +17,27 @@ func Iterate[Bean any](ctx context.Context, cond builder.Cond, f func(ctx contex
batchSize := setting.Database.IterateBufferSize
sess := GetEngine(ctx)
for {
beans := make([]*Bean, 0, batchSize)
if cond != nil {
sess = sess.Where(cond)
}
if err := sess.Limit(batchSize, start).Find(&beans); err != nil {
return err
}
if len(beans) == 0 {
return nil
}
start += len(beans)
for _, bean := range beans {
if err := f(ctx, bean); err != nil {
select {
case <-ctx.Done():
return ctx.Err()
default:
beans := make([]*Bean, 0, batchSize)
if cond != nil {
sess = sess.Where(cond)
}
if err := sess.Limit(batchSize, start).Find(&beans); err != nil {
return err
}
if len(beans) == 0 {
return nil
}
start += len(beans)
for _, bean := range beans {
if err := f(ctx, bean); err != nil {
return err
}
}
}
}
}

37
modules/doctor/repository.go
View File

@ -37,24 +37,29 @@ func deleteOrphanedRepos(ctx context.Context) (int64, error) {
adminUser := &user_model.User{IsAdmin: true}
for {
var ids []int64
if err := e.Table("`repository`").
Join("LEFT", "`user`", "repository.owner_id=user.id").
Where(builder.IsNull{"`user`.id"}).
Select("`repository`.id").Limit(batchSize).Find(&ids); err != nil {
return deleted, err
}
// if we don't get ids we have deleted them all
if len(ids) == 0 {
return deleted, nil
}
for _, id := range ids {
if err := repo_service.DeleteRepositoryDirectly(ctx, adminUser, id, true); err != nil {
select {
case <-ctx.Done():
return deleted, ctx.Err()
default:
var ids []int64
if err := e.Table("`repository`").
Join("LEFT", "`user`", "repository.owner_id=user.id").
Where(builder.IsNull{"`user`.id"}).
Select("`repository`.id").Limit(batchSize).Find(&ids); err != nil {
return deleted, err
}
deleted++
// if we don't get ids we have deleted them all
if len(ids) == 0 {
return deleted, nil
}
for _, id := range ids {
if err := repo_service.DeleteRepositoryDirectly(ctx, adminUser, id, true); err != nil {
return deleted, err
}
deleted++
}
}
}
}