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btc's Introduction

Bitso cryptocurrency exchange client

This project has as objective shows how to connect to the websocket and web service of Bitso cryptocurrency exchange using rxjava as a implementation of observer pattern and manipulates the data in real time.

The first window that you can see it's of the loading, works as a splash screen, while the app start.

1

After load, the app shows the next window

1

The UI is composed for 5 important parts.

  1. Header, where we can to stop all the connections and close the application

1

  1. Ticks, allows to see the actual upticks and downticks

1

  1. The best orders values (Bids and Asks)

1

  1. The buy and sell of BTC into the application (simulation)

4

  1. Recent trades

5

Configurations

The X best bids, best asks and recent trades

1

Consecutive M upticks and N downticks

1

build it! the project with maven 👍

git clone https://github.com/haroldjcastillo/btc.git
cd btc
mvn clean install && java -jar btc-ui/target/btc-ui-0.0.1.jar

HTTP Configuration

It's posible to configure the HTTP connection, request and socket timeout in the file /btc/config/pooling.json

{
	"connectTimeout": 15000,
	"connectionRequestTimeout": 30000,
	"defaultMaxPerRoute": 20,
	"httpHost": [
		{
			"hostName": "api.bitso.com",
			"port": 808
		}
	],
	"maxTotal": 100,
	"socketTimeout": 15000
}

Additional notes:

  • The http request for query the trades it's called each 1 second.
  • In each Sell or Buy the ticks counter it's restarted.
  • By default the X value it's 10 and M and N it's 2

Checklist

Feature File name Method name
Schedule the polling of trades over REST. ScheduleHttp start()
Request a book snapshot over REST. OrderController loadCurrentOrders()
Listen for diff-orders over websocket. OrderObserver onNext(java.lang.String)
Replay diff-orders. OrderManager diffOrder(java.lang.String)
Use config option X to request recent trades. TradeManager addRecentTrade(com.github.haroldjcastillo.btc.dao.TradePayloadResponse)
Use config option X to limit number of ASKs displayed in UI. OrderManager toSortBook(javafx.collections.ObservableList, List)
The loop that causes the trading algorithm to reevaluate. OrderManager diffOrder(java.lang.String)

btc's People

Contributors

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Watchers

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btc's Issues

FXML LoadException on startup

@haroldjcastillo do you know what is causing this?

16:21:55.221 [JavaFX Application Thread] ERROR com.github.haroldjcastillo.btc.ui.SplashController -
file:/home/marvin/code/lib/programming-challenges/HaroldCastillo/btc/btc-ui/target/btc-ui-0.0.1.jar!/fxml/orders.fxml
file:/home/marvin/code/lib/programming-challenges/HaroldCastillo/btc/btc-ui/target/btc-ui-0.0.1.jar!/fxml/main.fxml:21

javafx.fxml.LoadException:
file:/home/marvin/code/lib/programming-challenges/HaroldCastillo/btc/btc-ui/target/btc-ui-0.0.1.jar!/fxml/orders.fxml
file:/home/marvin/code/lib/programming-challenges/HaroldCastillo/btc/btc-ui/target/btc-ui-0.0.1.jar!/fxml/main.fxml:21

at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2571) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.access$2700(FXMLLoader.java:103) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader$IncludeElement.constructValue(FXMLLoader.java:1143) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:746) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104) ~[jfxrt.jar:?]
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097) ~[jfxrt.jar:?]
at com.github.haroldjcastillo.btc.ui.SplashController$SplashScreen$1.run(SplashController.java:39) ~[btc-ui-0.0.1.jar:?]
at com.sun.javafx.application.PlatformImpl.lambda$null$117(PlatformImpl.java:295) ~[jfxrt.jar:?]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_151]
at com.sun.javafx.application.PlatformImpl.lambda$runLater$118(PlatformImpl.java:294) ~[jfxrt.jar:?]
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) ~[jfxrt.jar:?]
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method) ~[jfxrt.jar:?]
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$450(GtkApplication.java:139) ~[jfxrt.jar:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]

Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_151]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_151]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) ~[?:1.8.0_151]
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_151]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) ~[?:1.8.0_151]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2566) ~[jfxrt.jar:?]
... 21 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.github.haroldjcastillo.business.http.ExecutorService
at com.github.haroldjcastillo.btc.ui.OrderController.loadCurrentOrders(OrderController.java:90) ~[btc-ui-0.0.1.jar:?]
at com.github.haroldjcastillo.btc.ui.OrderController.access$100(OrderController.java:19) ~[btc-ui-0.0.1.jar:?]
at com.github.haroldjcastillo.btc.ui.OrderController$1.run(OrderController.java:69) ~[btc-ui-0.0.1.jar:?]
at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_151]
at com.github.haroldjcastillo.btc.ui.OrderController.initialize(OrderController.java:61) ~[btc-ui-0.0.1.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_151]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_151]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71) ~[?:1.8.0_151]
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_151]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275) ~[?:1.8.0_151]
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2566) ~[jfxrt.jar:?]
... 21 more

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