SendTweetsToEventHub

import scala.collection.JavaConverters._
import com.microsoft.azure.eventhubs._
import java.util.concurrent._

val namespaceName = "<EVENT HUBS NAMESPACE>"
val eventHubName = "<EVENT HUB NAME>"
val sasKeyName = "<POLICY NAME>"
val sasKey = "<POLICY KEY>"
val connStr = new ConnectionStringBuilder()
            .setNamespaceName(namespaceName)
            .setEventHubName(eventHubName)
            .setSasKeyName(sasKeyName)
            .setSasKey(sasKey)

val pool = Executors.newFixedThreadPool(1)
val eventHubClient = EventHubClient.create(connStr.toString(), pool)

def sendEvent(message: String) = {
  val messageData = EventData.create(message.getBytes("UTF-8"))
  eventHubClient.get().send(messageData)
  System.out.println("Sent event: " + message + "\n")
}

import twitter4j._
import twitter4j.TwitterFactory
import twitter4j.Twitter
import twitter4j.conf.ConfigurationBuilder

// Twitter configuration!
// Replace values below with yours

val twitterConsumerKey = "<CONSUMER KEY>"
val twitterConsumerSecret = "<CONSUMER SECRET>"
val twitterOauthAccessToken = "<ACCESS TOKEN>"
val twitterOauthTokenSecret = "<TOKEN SECRET>"

val cb = new ConfigurationBuilder()
  cb.setDebugEnabled(true)
  .setOAuthConsumerKey(twitterConsumerKey)
  .setOAuthConsumerSecret(twitterConsumerSecret)
  .setOAuthAccessToken(twitterOauthAccessToken)
  .setOAuthAccessTokenSecret(twitterOauthTokenSecret)

val twitterFactory = new TwitterFactory(cb.build())
val twitter = twitterFactory.getInstance()

// Getting tweets with keyword "Azure" and sending them to the Event Hub in realtime!

val query = new Query(" #Azure ")
query.setCount(100)
query.lang("en")
var finished = false
while (!finished) {
  val result = twitter.search(query)
  val statuses = result.getTweets()
  var lowestStatusId = Long.MaxValue
  for (status <- statuses.asScala) {
    if(!status.isRetweet()){
      sendEvent(status.getText())
    }
    lowestStatusId = Math.min(status.getId(), lowestStatusId)
    Thread.sleep(2000)
  }
  query.setMaxId(lowestStatusId - 1)
}

// Closing connection to the Event Hub
 eventHubClient.get().close()