Examples with Values org.apache.storm.tuple.Values used on opensource projects

Example 36 with Values

use of org.apache.storm.tuple.Values in project storm by apache.

the class WordCountTridentMap method buildTopology.

public static StormTopology buildTopology(String url, String collectionName) {
    Fields fields = new Fields("word", "count");
    FixedBatchSpout spout = new FixedBatchSpout(fields, 4, new Values("storm", 1), new Values("trident", 1), new Values("needs", 1), new Values("javadoc", 1));
    spout.setCycle(true);
    MongoMapper mapper = new SimpleMongoMapper().withFields("word", "count");
    QueryFilterCreator filterCreator = new SimpleQueryFilterCreator().withField("word");
    MongoMapState.Options options = new MongoMapState.Options();
    options.url = url;
    options.collectionName = collectionName;
    options.mapper = mapper;
    options.queryCreator = filterCreator;
    StateFactory factory = MongoMapState.transactional(options);
    TridentTopology topology = new TridentTopology();
    Stream stream = topology.newStream("spout1", spout);
    TridentState state = stream.groupBy(new Fields("word")).persistentAggregate(factory, new Fields("count"), new Sum(), new Fields("sum"));
    stream.stateQuery(state, new Fields("word"), new MapGet(), new Fields("sum")).each(new Fields("word", "sum"), new PrintFunction(), new Fields());
    return topology.build();
}

Example 37 with Values

use of org.apache.storm.tuple.Values in project storm by apache.

the class WordCounter method execute.

public void execute(Tuple input, BasicOutputCollector collector) {
    String word = input.getStringByField("word");
    int count;
    if (wordCounter.containsKey(word)) {
        count = wordCounter.get(word) + 1;
        wordCounter.put(word, wordCounter.get(word) + 1);
    } else {
        count = 1;
    }
    wordCounter.put(word, count);
    collector.emit(new Values(word, String.valueOf(count)));
}

Example 38 with Values

use of org.apache.storm.tuple.Values in project storm by apache.

the class WordCountValueMapper method toValues.

@Override
public List<Values> toValues(ITuple tuple, Result result) throws Exception {
    List<Values> values = new ArrayList<Values>();
    Cell[] cells = result.rawCells();
    for (Cell cell : cells) {
        Values value = new Values(Bytes.toString(CellUtil.cloneQualifier(cell)), Bytes.toLong(CellUtil.cloneValue(cell)));
        values.add(value);
    }
    return values;
}

Example 39 with Values

use of org.apache.storm.tuple.Values in project storm by apache.

the class TridentFileTopology method buildTopology.

public static StormTopology buildTopology(String hdfsUrl) {
    FixedBatchSpout spout = new FixedBatchSpout(new Fields("sentence", "key"), 1000, new Values("the cow jumped over the moon", 1l), new Values("the man went to the store and bought some candy", 2l), new Values("four score and seven years ago", 3l), new Values("how many apples can you eat", 4l), new Values("to be or not to be the person", 5l));
    spout.setCycle(true);
    TridentTopology topology = new TridentTopology();
    Stream stream = topology.newStream("spout1", spout);
    Fields hdfsFields = new Fields("sentence", "key");
    FileNameFormat fileNameFormat = new DefaultFileNameFormat().withPath("/tmp/trident").withPrefix("trident").withExtension(".txt");
    RecordFormat recordFormat = new DelimitedRecordFormat().withFields(hdfsFields);
    FileRotationPolicy rotationPolicy = new FileSizeRotationPolicy(5.0f, FileSizeRotationPolicy.Units.MB);
    HdfsState.Options options = new HdfsState.HdfsFileOptions().withFileNameFormat(fileNameFormat).withRecordFormat(recordFormat).withRotationPolicy(rotationPolicy).withFsUrl(hdfsUrl).withConfigKey("hdfs.config");
    StateFactory factory = new HdfsStateFactory().withOptions(options);
    TridentState state = stream.partitionPersist(factory, hdfsFields, new HdfsUpdater(), new Fields());
    return topology.build();
}

Example 40 with Values

use of org.apache.storm.tuple.Values in project storm by apache.

the class AbstractRankerBolt method emitRankings.

private void emitRankings(BasicOutputCollector collector) {
    collector.emit(new Values(rankings.copy()));
    getLogger().debug("Rankings: " + rankings);
}