Struct attachStepExecer

server/attach_timeout.go:70–75

attachStepExecer runs catalog-attachment statements against db with a hard per-statement deadline. Each statement runs under a context deadline (the duckdb-go driver propagates cancellation by repeatedly calling duckdb_interrupt, which stops a query that reaches an execution checkpoint) plus a watch

// acquiring the semaphore and `defer ae.releaseSem(sem)` in place of the bare
// `defer func() { <-sem }()`.
type attachStepExecer struct {
	db *sql.DB

	mu        sync.Mutex
	abandoned []abandonedAttachStmt
}

type abandonedAttachStmt struct {
	query string