Examples with MongoMapper org.apache.storm.mongodb.common.mapper.MongoMapper used on opensource projects

Example 1 with MongoMapper

use of org.apache.storm.mongodb.common.mapper.MongoMapper in project storm by apache.

the class InsertWordCount method main.

public static void main(String[] args) throws Exception {
    Config config = new Config();
    String url = TEST_MONGODB_URL;
    String collectionName = TEST_MONGODB_COLLECTION_NAME;
    if (args.length >= 2) {
        url = args[0];
        collectionName = args[1];
    }
    WordSpout spout = new WordSpout();
    WordCounter bolt = new WordCounter();
    MongoMapper mapper = new SimpleMongoMapper().withFields("word", "count");
    MongoInsertBolt insertBolt = new MongoInsertBolt(url, collectionName, mapper);
    // wordSpout ==> countBolt ==> MongoInsertBolt
    TopologyBuilder builder = new TopologyBuilder();
    builder.setSpout(WORD_SPOUT, spout, 1);
    builder.setBolt(COUNT_BOLT, bolt, 1).shuffleGrouping(WORD_SPOUT);
    builder.setBolt(INSERT_BOLT, insertBolt, 1).fieldsGrouping(COUNT_BOLT, new Fields("word"));
    if (args.length == 2) {
        try (LocalCluster cluster = new LocalCluster();
            LocalTopology topo = cluster.submitTopology("test", config, builder.createTopology())) {
            Thread.sleep(30000);
        }
        System.exit(0);
    } else if (args.length == 3) {
        StormSubmitter.submitTopology(args[2], config, builder.createTopology());
    } else {
        System.out.println("Usage: InsertWordCount <mongodb url> <mongodb collection> [topology name]");
    }
}

Example 2 with MongoMapper

use of org.apache.storm.mongodb.common.mapper.MongoMapper in project storm by apache.

the class WordCountTrident 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");
    MongoState.Options options = new MongoState.Options().withUrl(url).withCollectionName(collectionName).withMapper(mapper);
    StateFactory factory = new MongoStateFactory(options);
    TridentTopology topology = new TridentTopology();
    Stream stream = topology.newStream("spout1", spout);
    stream.partitionPersist(factory, fields, new MongoStateUpdater(), new Fields());
    TridentState state = topology.newStaticState(factory);
    stream = stream.stateQuery(state, new Fields("word"), new MongoStateQuery(), new Fields("columnName", "columnValue"));
    stream.each(new Fields("word", "columnValue"), new PrintFunction(), new Fields());
    return topology.build();
}

Example 3 with MongoMapper

use of org.apache.storm.mongodb.common.mapper.MongoMapper 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();
}