How to use

org.apache.storm.hdfs.spout.HdfsSpout

constructor

HdfsSpout spout = new HdfsSpout().withOutputFields(TextFileReader.defaultFields)
                 .setReaderType(fileFormat)
                 .setHdfsUri(hdfsUri)

private AutoCloseableHdfsSpout makeSpout(String readerType, String[] outputFields) {
  HdfsSpout spout = new HdfsSpout().withOutputFields(outputFields)
                   .setReaderType(readerType)
                   .setHdfsUri(DFS_CLUSTER_RULE.getDfscluster().getURI().toString())
                   .setSourceDir(source.toString())
                   .setArchiveDir(archive.toString())
                   .setBadFilesDir(badfiles.toString());
  return new AutoCloseableHdfsSpout(spout);
}

static StormTopology getTopology(Map<String, Object> config) {
  final int spoutNum = Helper.getInt(config, SPOUT_NUM, DEFAULT_SPOUT_NUM);
  final int boltNum = Helper.getInt(config, BOLT_NUM, DEFAULT_BOLT_NUM);
  final String fileFormat = Helper.getStr(config, "text");
  final String hdfsUri = Helper.getStr(config, HDFS_URI);
  final String sourceDir = Helper.getStr(config, SOURCE_DIR);
  final String archiveDir = Helper.getStr(config, ARCHIVE_DIR);
  final String badDir = Helper.getStr(config, BAD_DIR);
  // 1 -  Setup Hdfs Spout   --------
  HdfsSpout spout = new HdfsSpout()
    .setReaderType(fileFormat)
    .setHdfsUri(hdfsUri)
    .setSourceDir(sourceDir)
    .setArchiveDir(archiveDir)
    .setBadFilesDir(badDir)
    .withOutputFields(TextFileReader.defaultFields);
  // 2 -   DevNull Bolt   --------
  DevNullBolt bolt = new DevNullBolt();
  // 3 - Setup Topology  --------
  TopologyBuilder builder = new TopologyBuilder();
  builder.setSpout(SPOUT_ID, spout, spoutNum);
  builder.setBolt(BOLT_ID, bolt, boltNum)
      .localOrShuffleGrouping(SPOUT_ID);
  return builder.createTopology();
}