trm

type CtxGetter func(ctx context.Context) Transaction

type CtxKey interface{}

type Manager interface {
	// Do processes a transaction inside a closure.
	Do(context.Context, func(ctx context.Context) error) error
	// DoWithSettings processes a transaction inside a closure with custom trm.Settings.
	DoWithSettings(context.Context, Settings, func(ctx context.Context) error) error
}

type NestedTrFactory interface {
	Begin(ctx context.Context, s Settings) (context.Context, Transaction, error)
}

type Propagation int8

type Settings interface {
	// EnrichBy fills nil properties from external Settings.
	EnrichBy(external Settings) Settings

	// CtxKey returns trm.CtxKey for the trm.Transaction.
	CtxKey() CtxKey
	CtxKeyOrNil() *CtxKey
	SetCtxKey(*CtxKey) Settings

	// Propagation returns trm.Propagation.
	Propagation() Propagation
	PropagationOrNil() *Propagation
	SetPropagation(*Propagation) Settings

	// Cancelable defines that parent trm.Transaction can cancel child trm.Transaction or goroutines.
	Cancelable() bool
	CancelableOrNil() *bool
	SetCancelable(*bool) Settings

	// TimeoutOrNil returns time.Duration of the trm.Transaction.
	TimeoutOrNil() *time.Duration
	SetTimeout(*time.Duration) Settings
}

type TrFactory func(ctx context.Context, s Settings) (context.Context, Transaction, error)

type Transaction interface {
	// Transaction returns the real transaction sql.Tx, sqlx.Tx or another.
	Transaction() interface{}
	// Commit the trm.Transaction.
	// Commit should be used only inside of Manager.
	Commit(context.Context) error
	// Rollback the trm.Transaction.
	// Rollback should be used only inside of Manager.
	Rollback(context.Context) error
	// IsActive returns true if the transaction started but not committed or rolled back.
	IsActive() bool
	// Closed returns a channel that's closed when transaction committed or rolled back.
	Closed() <-chan struct{}
}

type СtxManager interface {
	// Default gets Transaction from context.Context by default CtxKey.
	Default(ctx context.Context) Transaction
	// SetDefault sets.Transaction in context.Context by default CtxKey.
	SetDefault(ctx context.Context, t Transaction) context.Context

	// ByKey gets Transaction from context.Context by CtxKey.
	ByKey(ctx context.Context, key CtxKey) Transaction
	// SetByKey sets Transaction in context.Context by.CtxKey.
	SetByKey(ctx context.Context, key CtxKey, t Transaction) context.Context
}