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feat: optimize the FindUnreferencedPackages package query

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Replace a double select with a simple select.

The complication originates from the initial implementation which
deleted packages instead of selecting them. It was justified to
workaround a problem in MySQL. But it is just a waste of resources
when collecting a list of IDs.
This commit is contained in:
Earl Warren 2024-07-27 15:29:53 +02:00
parent dac78913aa
commit ff6aceaeac
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GPG key ID: 0579CB2928A78A00
3 changed files with 18 additions and 16 deletions
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22
models/packages/package.go
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@ -280,19 +280,17 @@ func GetPackagesByType(ctx context.Context, ownerID int64, packageType Type) ([]
}
// FindUnreferencedPackages gets all packages without associated versions
func FindUnreferencedPackages(ctx context.Context) ([]*Package, error) {
in := builder.
func FindUnreferencedPackages(ctx context.Context) ([]int64, error) {
var pIDs []int64
if err := db.GetEngine(ctx).
Select("package.id").
From("package").
LeftJoin("package_version", "package_version.package_id = package.id").
Where(builder.Expr("package_version.id IS NULL"))
ps := make([]*Package, 0, 10)
return ps, db.GetEngine(ctx).
// double select workaround for MySQL
// https://stackoverflow.com/questions/4471277/mysql-delete-from-with-subquery-as-condition
Where(builder.In("package.id", builder.Select("id").From(in, "temp"))).
Find(&ps)
Table("package").
Join("LEFT", "package_version", "package_version.package_id = package.id").
Where("package_version.id IS NULL").
Find(&pIDs); err != nil {
return nil, err
}
return pIDs, nil
}
// HasOwnerPackages tests if a user/org has accessible packages