// getQueryKey returns the etcd key for the query.
func GetQueryKey(q *protocol.KontrolQuery) (string, error) {
fields := q.Fields()
if q.Username == "" {
return "", errors.New("Empty username field")
}
// Validate query and build key.
path := "/"
empty := false // encountered with empty field?
empytField := "" // for error log
// http://golang.org/doc/go1.3#map, order is important and we can't rely on
// maps because the keys are not ordered :)
for _, key := range keyOrder {
v := fields[key]
if v == "" {
empty = true
empytField = key
continue
}
if empty && v != "" {
return "", fmt.Errorf("Invalid query. Query option is not set: %s", empytField)
}
path = path + v + "/"
}
path = strings.TrimSuffix(path, "/")
return path, nil
}
// selectQuery returns a SQL query for the given query
func selectQuery(query *protocol.KontrolQuery) (string, []interface{}, error) {
psql := sq.StatementBuilder.PlaceholderFormat(sq.Dollar)
kites := psql.Select("*").From("kite.kite")
fields := query.Fields()
andQuery := sq.And{}
// we stop for the first empty value
for _, key := range keyOrder {
v := fields[key]
if v == "" {
continue
}
// we are using "kitename" as the columname
if key == "name" {
key = "kitename"
}
andQuery = append(andQuery, sq.Eq{key: v})
}
if len(andQuery) == 0 {
return "", nil, ErrQueryFieldsEmpty
}
return kites.Where(andQuery).ToSql()
}
// onlyIDQuery returns true if the query contains only a non-empty ID and all
// others keys are empty
func onlyIDQuery(q *protocol.KontrolQuery) bool {
fields := q.Fields()
// check if any other key exist, if yes return a false
for _, k := range keyOrder {
v := fields[k]
if k != "id" && v != "" {
return false
}
}
// now all other keys are empty, check finally for our ID
if fields["id"] != "" {
return true
}
// ID is empty too!
return false
}
