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subscribeData

subscribeData​

Starts a real-time data subscription for a Provider Instance.

Parameters

  • provInstName (String): The name of the Provider Instance to subscribe to
  • callback (JSFunction): The callback invoked when data arrives

Returns: None (void)

Description

The callback runs every time the server pushes data over a real-time channel such as WebSocket or SSE. Subscriptions must be released with unsubscribeData or cancelSubscribeData.

Example

// 실시간 주가 구독
$vm.subscribeData("stockProvider", function(data) {
  $log.i("실시간 데이터:", JSON.stringify(data));
});

Related

  • $vm.unsubscribeData(provInstName) — release the subscription (sends a cancel request to the server)
  • $vm.cancelSubscribeData(provInstName) — release immediately (no lifecycle events)
  • $vm.cancelAllSubscribeData() — release every subscription immediately