Interface: module:caplin/services/messaging/SubscriptionListener

Methods

onDataUpdate(subject, data, metadata)

Called when an update is received for the subscribed record.

Parameters:

Name	Type	Description
subject	String	The subject of the record that the update is for.
data	Map	The updated data.
metadata	Map	Meta data for the update. Properties Name Type Description isImage Boolean Whether the update is an image or not. latency Number The latency of the record in milliseconds. timeReceived Number The time that the update was received in milliseconds since 1 January 1970 00:00:00 UTC.

Implementations:

• module:caplin/trading/trademodel/StreamingInstrumentDataSubscriber#onDataUpdate

onError(subject, errorType)

Called when there is an error with the subscription.

Parameters:

Name	Type	Description
subject	String	The subject of the record that had an error.
errorType	module:caplin/services/messaging/SubscriptionError	The type of error.

Implementations:

• module:caplin/trading/trademodel/StreamingInstrumentDataSubscriber#onError

onStatusUpdate(subject, status)

Called when the status of the subscription changes.

Parameters:

Name	Type	Description
subject	String	The subject of the record that changed status.
status	module:caplin/services/messaging/SubscriptionStatus	The new status of the subscription.

Implementations:

• module:caplin/trading/trademodel/StreamingInstrumentDataSubscriber#onStatusUpdate