38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
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package mysql
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import (
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"database/sql"
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"errors"
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mysqldrv "github.com/go-sql-driver/mysql"
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"code.nochebuena.dev/einherjar/core/xerrors"
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)
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// HandleError maps MySQL driver and database/sql errors to typed [xerrors] values.
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// Returns nil when err is nil. Also available as [Provider.HandleError].
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//
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// Mapped codes:
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// - 1062 (ER_DUP_ENTRY) → ErrAlreadyExists
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// - 1216, 1217, 1451, 1452 (FK errors) → ErrInvalidInput
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// - sql.ErrNoRows → ErrNotFound
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// - all others → ErrInternal
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func HandleError(err error) error {
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if err == nil {
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return nil
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}
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var mysqlErr *mysqldrv.MySQLError
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if errors.As(err, &mysqlErr) {
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switch mysqlErr.Number {
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case 1062:
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return xerrors.New(xerrors.ErrAlreadyExists, "record already exists").WithError(err)
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case 1216, 1217, 1451, 1452:
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return xerrors.New(xerrors.ErrInvalidInput, "data integrity violation").WithError(err)
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}
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}
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if errors.Is(err, sql.ErrNoRows) {
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return xerrors.New(xerrors.ErrNotFound, "record not found").WithError(err)
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}
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return xerrors.New(xerrors.ErrInternal, "unexpected database error").WithError(err)
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}
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