62 lines
1.1 KiB
Go
62 lines
1.1 KiB
Go
package db
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import (
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"context"
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"database/sql"
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"fmt"
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"github.com/lib/pq"
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)
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type Store interface {
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Querier
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ExecTx(ctx context.Context, fn func(*Queries) error) error
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IsUniqueViolation(err error) bool
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IsForeignKeyViolation(err error) bool
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IsNoRows(err error) bool
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}
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type SQLStore struct {
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db *sql.DB
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*Queries
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}
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func NewStore(db *sql.DB) Store {
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return &SQLStore{
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db: db,
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Queries: New(db),
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}
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}
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func (store *SQLStore) ExecTx(ctx context.Context, fn func(*Queries) error) error {
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tx, err := store.db.BeginTx(ctx, nil)
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if err != nil {
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return err
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}
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q := New(tx)
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err = fn(q)
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if err != nil {
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if rbErr := tx.Rollback(); rbErr != nil {
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return fmt.Errorf("tx err: %v, rb err: %v", err, rbErr)
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}
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return err
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}
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return tx.Commit()
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}
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func (store *SQLStore) IsUniqueViolation(err error) bool {
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pqErr, ok := err.(*pq.Error)
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return ok && pqErr.Code == "23505"
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}
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func (store *SQLStore) IsForeignKeyViolation(err error) bool {
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pqErr, ok := err.(*pq.Error)
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return ok && pqErr.Code == "23503"
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}
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func (store *SQLStore) IsNoRows(err error) bool {
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return err == sql.ErrNoRows
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}
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