dendrite/internal/sqlutil/writer_dummy.go

29 lines
685 B
Go

package sqlutil
import (
"database/sql"
)
// DummyWriter implements sqlutil.Writer.
// The DummyWriter is designed to allow reuse of the sqlutil.Writer
// interface but, unlike ExclusiveWriter, it will not guarantee
// writer exclusivity. This is fine in PostgreSQL where overlapping
// transactions and writes are acceptable.
type DummyWriter struct {
}
// NewDummyWriter returns a new dummy writer.
func NewDummyWriter() Writer {
return &DummyWriter{}
}
func (w *DummyWriter) Do(db *sql.DB, txn *sql.Tx, f func(txn *sql.Tx) error) error {
if db != nil && txn == nil {
return WithTransaction(db, func(txn *sql.Tx) error {
return f(txn)
})
} else {
return f(txn)
}
}