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sqlite: LookupVolume: fix partial name match

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A partial name match is tricky as we want it to be fast but also make
sure there's only one partial match iff there's no full one.

[NO NEW TESTS NEEDED] as it fixes a system test.

Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
This commit is contained in:
Valentin Rothberg
2023-02-28 10:43:37 +01:00
parent 01359457c4
commit df88f546b6
1 changed files with 8 additions and 7 deletions
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15
libpod/sqlite_state.go
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@ -2046,24 +2046,25 @@ func (s *SQLiteState) LookupVolume(name string) (*Volume, error) {
return nil, define.ErrDBClosed
}
rows, err := s.conn.Query("SELECT JSON FROM VolumeConfig WHERE Name LIKE ?;", name+"%")
rows, err := s.conn.Query("SELECT Name, JSON FROM VolumeConfig WHERE Name LIKE ? ORDER BY LENGTH(Name) ASC;", name+"%")
if err != nil {
return nil, fmt.Errorf("querying database for volume %s: %w", name, err)
}
defer rows.Close()
var configJSON string
foundResult := false
var foundName, configJSON string
for rows.Next() {
if foundResult {
if foundName != "" {
return nil, fmt.Errorf("more than one result for volume name %s: %w", name, define.ErrVolumeExists)
}
if err := rows.Scan(&configJSON); err != nil {
if err := rows.Scan(&foundName, &configJSON); err != nil {
return nil, fmt.Errorf("retrieving volume %s config from database: %w", name, err)
}
foundResult = true
if foundName == name {
break
}
}
if !foundResult {
if foundName == "" {
return nil, fmt.Errorf("no volume with name %q found: %w", name, define.ErrNoSuchVolume)
}