Function: getSubjectFromBusMessage()

Makaio Framework

---

Makaio Framework / bus-core / getSubjectFromBusMessage

Function: getSubjectFromBusMessage()

getSubjectFromBusMessage(message): string | null

Defined in: ../../../packages/bus-core/src/utils/transport.ts:54

Extracts the full subject key from a bus message.

Combines the namespace and subject into the full subject key format (namespace.subject) used for handler lookups and subscription matching. Returns null if the message doesn’t contain the required fields.

Parameters

message

BusMessage

Bus message (event or request)

Returns

string | null

Full subject key in format “namespace.subject”, or null if fields are missing

Example

const message: BusMessage = {
  type: 'event',
  subject: 'log',
  namespace: 'adapter',
  payload: { message: 'Hello' },
  messageId: 'msg-123',
};

const fullSubject = getSubjectFromBusMessage(message);
// Returns: "adapter.log"