velox.api.layer1

Interface Layer1ApiInstrumentAdapter

All Superinterfaces:

Layer1ApiInstrumentListener

All Known Subinterfaces:

Layer1ApiAdapter, StrategyUpdateGenerator

public interface Layer1ApiInstrumentAdapter
extends Layer1ApiInstrumentListener

Provides default empty implementations.

Method Summary

Modifier and Type	Method and Description
default void	onInstrumentAdded(java.lang.String alias, InstrumentInfo instrumentInfo) Indicates successful subscription to the instrument
default void	onInstrumentAlreadySubscribed(java.lang.String symbol, java.lang.String exchange, java.lang.String type) Indicates that attempt to subscribe failed because subscription is already active
default void	onInstrumentNotFound(java.lang.String symbol, java.lang.String exchange, java.lang.String type) Indicates that attempt to subscribe failed because instrument does not exist
default void	onInstrumentRemoved(java.lang.String alias) Unsubscribed from instrument (user-initiated or provider initiated). Please note that if you use this in strategy that implements OnlineCalculatable, you should not delete any data about instrument that is expected in OnlineCalculatable.calculateValuesInRange(String, String, long, long, int, velox.api.layer1.layers.strategies.interfaces.CalculatedResultListener) or OnlineCalculatable.createOnlineValueCalculator(String, String, long, java.util.function.Consumer, velox.api.layer1.layers.strategies.interfaces.InvalidateInterface), or should handle absence of that data (in case you delete it) gracefully.

Method Detail

onInstrumentAdded

default void onInstrumentAdded(java.lang.String alias,
                               InstrumentInfo instrumentInfo)

Description copied from interface: Layer1ApiInstrumentListener

Indicates successful subscription to the instrument

Specified by:

onInstrumentAdded in interface Layer1ApiInstrumentListener

Parameters:

alias - instrument alias

instrumentInfo - instrument specifications

onInstrumentRemoved

default void onInstrumentRemoved(java.lang.String alias)

Description copied from interface: Layer1ApiInstrumentListener

Unsubscribed from instrument (user-initiated or provider initiated).
Please note that if you use this in strategy that implements OnlineCalculatable, you should not delete any data about instrument that is expected in OnlineCalculatable.calculateValuesInRange(String, String, long, long, int, velox.api.layer1.layers.strategies.interfaces.CalculatedResultListener) or OnlineCalculatable.createOnlineValueCalculator(String, String, long, java.util.function.Consumer, velox.api.layer1.layers.strategies.interfaces.InvalidateInterface), or should handle absence of that data (in case you delete it) gracefully. The reason is that you can get Layer1ApiInstrumentListener.onInstrumentRemoved(String) in the middle of OnlineCalculatable request

Specified by:

onInstrumentRemoved in interface Layer1ApiInstrumentListener

onInstrumentNotFound

default void onInstrumentNotFound(java.lang.String symbol,
                                  java.lang.String exchange,
                                  java.lang.String type)

Description copied from interface: Layer1ApiInstrumentListener

Indicates that attempt to subscribe failed because instrument does not exist

Specified by:

onInstrumentNotFound in interface Layer1ApiInstrumentListener

type - see InstrumentCoreInfo.type

onInstrumentAlreadySubscribed

default void onInstrumentAlreadySubscribed(java.lang.String symbol,
                                           java.lang.String exchange,
                                           java.lang.String type)

Description copied from interface: Layer1ApiInstrumentListener

Indicates that attempt to subscribe failed because subscription is already active

Specified by:

onInstrumentAlreadySubscribed in interface Layer1ApiInstrumentListener

type - see InstrumentCoreInfo.type