gotosocial/internal/db/error.go

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/*
GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package db
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import "fmt"
// Error denotes a database error.
type Error error
var (
// ErrNoEntries is returned when a caller expected an entry for a query, but none was found.
ErrNoEntries Error = fmt.Errorf("no entries")
// ErrMultipleEntries is returned when a caller expected ONE entry for a query, but multiples were found.
ErrMultipleEntries Error = fmt.Errorf("multiple entries")
// ErrUnknown denotes an unknown database error.
ErrUnknown Error = fmt.Errorf("unknown error")
)
// ErrAlreadyExists is returned when a caller tries to insert a database entry that already exists in the db.
type ErrAlreadyExists struct {
message string
}
func (e *ErrAlreadyExists) Error() string {
return e.message
}
func NewErrAlreadyExists(msg string) error {
return &ErrAlreadyExists{message: msg}
}