Created
September 12, 2016 15:13
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| /** | |
| * Created by Xisco Sastre & Alberto Pou | |
| */ | |
| import com.spark.streaming.StreamingLogger | |
| import org.apache.spark._ | |
| import org.apache.spark.streaming._ | |
| import org.apache.spark.streaming.twitter._ | |
| import com.datastax.spark.connector.cql.CassandraConnector | |
| import com.datastax.spark.connector._ | |
| object TwitterScala { | |
| def main(args: Array[String]) { | |
| // Set initial properties | |
| StreamingLogger.setStreamingLogLevels() | |
| Utils.setTwitterProperties() | |
| // Streaming definition (In local: .setMaster("local[n]")) | |
| val conf = new SparkConf().setAppName("CloudProject") | |
| .set("spark.cassandra.connection.host", "cassandra-01.xstrcbt.com") | |
| val ssc = new StreamingContext(conf, Seconds(1)) | |
| val filter = Array(args(0)) | |
| val stream = TwitterUtils.createStream(ssc, None, filter) | |
| // Cassandra connector configuration | |
| CassandraConnector(conf).withSessionDo { session => | |
| session.execute("CREATE KEYSPACE IF NOT EXISTS tensorsparkkandra WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 2 }") | |
| session.execute("USE tensorsparkkandra") | |
| session.execute("CREATE TABLE IF NOT EXISTS tensorsparkkandra.images (imgid bigint, url text, category text, confidence double, Primary KEY (imgid, category, confidence))") | |
| } | |
| // Get tweet's media | |
| val media_computed = stream.filter(tweet => tweet.getMediaEntities.nonEmpty) | |
| .map(tweet => Utils.computeMediaObject(tweet.getMediaEntities()(0).getId, tweet.getMediaEntities()(0).getMediaURL)) | |
| // Save images in Cassandra DB | |
| media_computed.foreachRDD(rdd => { | |
| rdd.saveToCassandra("tensorsparkkandra", "images", SomeColumns("imgid", "category", "confidence", "url")) | |
| }) | |
| // Start streaming | |
| ssc.start | |
| // Wait for the computation to terminate | |
| ssc.awaitTermination | |
| } | |
| } |
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