Examples with KinesisStringInputOperator org.apache.apex.malhar.contrib.kinesis.KinesisStringInputOperator used on opensource projects

Example 1 with KinesisStringInputOperator

use of org.apache.apex.malhar.contrib.kinesis.KinesisStringInputOperator in project apex-malhar by apache.

the class KinesisHashtagsApplication method populateDAG.

@Override
public void populateDAG(DAG dag, Configuration conf) {
    // Setup the operator to get the data from twitter sample stream injected into the system.
    TwitterSampleInput twitterFeed = new TwitterSampleInput();
    twitterFeed = dag.addOperator("TweetSampler", twitterFeed);
    // Setup the operator to get the Hashtags extracted from the twitter statuses
    TwitterStatusHashtagExtractor HashtagExtractor = dag.addOperator("HashtagExtractor", TwitterStatusHashtagExtractor.class);
    // Setup the operator send the twitter statuses to kinesis
    KinesisStringOutputOperator outputOp = dag.addOperator("ToKinesis", new KinesisStringOutputOperator());
    outputOp.setBatchSize(500);
    // Feed the statuses from feed into the input of the Hashtag extractor.
    dag.addStream("TweetStream", twitterFeed.status, HashtagExtractor.input).setLocality(Locality.CONTAINER_LOCAL);
    // Start counting the Hashtags coming out of Hashtag extractor
    dag.addStream("SendToKinesis", HashtagExtractor.hashtags, outputOp.inputPort).setLocality(locality);
    // ------------------------------------------------------------------------------------------
    KinesisStringInputOperator inputOp = dag.addOperator("FromKinesis", new KinesisStringInputOperator());
    ShardManager shardStats = new ShardManager();
    inputOp.setShardManager(shardStats);
    inputOp.getConsumer().setRecordsLimit(600);
    inputOp.setStrategy(AbstractKinesisInputOperator.PartitionStrategy.MANY_TO_ONE.toString());
    // Setup a node to count the unique Hashtags within a window.
    UniqueCounter<String> uniqueCounter = dag.addOperator("UniqueHashtagCounter", new UniqueCounter<String>());
    // Get the aggregated Hashtag counts and count them over last 5 mins.
    WindowedTopCounter<String> topCounts = dag.addOperator("TopCounter", new WindowedTopCounter<String>());
    topCounts.setTopCount(10);
    topCounts.setSlidingWindowWidth(600);
    topCounts.setDagWindowWidth(1);
    dag.addStream("TwittedHashtags", inputOp.outputPort, uniqueCounter.data).setLocality(locality);
    // Count unique Hashtags
    dag.addStream("UniqueHashtagCounts", uniqueCounter.count, topCounts.input).setLocality(locality);
    // Count top 10
    dag.addStream("TopHashtags", topCounts.output, consoleOutput(dag, "topHashtags")).setLocality(locality);
}