Flink first project

Posted by Georg Heiler on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Flink-first-project-tp12754.html

New to flink I would like to do a small project to get a better feeling for flink. I am thinking of getting some stats from several REST api (i.e. Bitcoin course values from different exchanges) and comparing prices over different exchanges in real time.

Are there already some REST api sources for flink as a sample to get started implementing a custom REST source?

I was thinking about using https://github.com/timmolter/XChange to connect to several exchanges. E.g. to make a single api call by hand would look similar to

val currencyPair = new CurrencyPair(Currency.XMR, Currency.BTC)

  CertHelper.trustAllCerts()

  val poloniex = ExchangeFactory.INSTANCE.createExchange(classOf[PoloniexExchange].getName)

  val dataService = poloniex.getMarketDataService

  generic(dataService)

  raw(dataService.asInstanceOf[PoloniexMarketDataServiceRaw])

System.out.println(dataService.getTicker(currencyPair))

How would be a proper way to make this available as a flink source? I have seen https://github.com/apache/flink/blob/master/flink-contrib/flink-connector-wikiedits/src/main/java/org/apache/flink/streaming/connectors/wikiedits/WikipediaEditsSource.java but new to flink am a bit unsure how to proceed.

Regards,

Georg