content: package hip.ch3.avro;
  
  import hip.ch3.avro.gen.Stock;
  import hip.util.Cli;
  import hip.util.CliCommonOpts;
  import org.apache.avro.file.DataFileStream;
  import org.apache.avro.specific.SpecificDatumReader;
  import org.apache.commons.lang.builder.ToStringBuilder;
  import org.apache.commons.lang.builder.ToStringStyle;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.conf.Configured;
  import org.apache.hadoop.fs.FileSystem;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.io.IOUtils;
  import org.apache.hadoop.util.Tool;
  import org.apache.hadoop.util.ToolRunner;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  public class AvroStockFileRead extends Configured implements Tool {
    /**
     * Main entry point for the example.
     *
     * @param args arguments
     * @throws Exception when something goes wrong
     */
    public static void main(final String[] args) throws Exception {
      int res = ToolRunner.run(new Configuration(), new AvroStockFileRead(), args);
      System.exit(res);
    }
  
    /**
     * Read the sequence file.
     *
     * @param args the command-line arguments
     * @return the process exit code
     * @throws Exception if something goes wrong
     */
    public int run(final String[] args) throws Exception {
  
      Cli cli = Cli.builder().setArgs(args).addOptions(CliCommonOpts.MrIOpts.values()).build();
      int result = cli.runCmd();
  
      if (result != 0) {
        return result;
      }
  
      Path inputFile = new Path(cli.getArgValueAsString(CliCommonOpts.MrIOpts.INPUT));
  
      Configuration conf = super.getConf();
  
      FileSystem hdfs = FileSystem.get(conf);
  
      InputStream is = hdfs.open(inputFile);
      dumpStream(is);
  
      return 0;
    }
  
    public static void dumpStream(InputStream is) throws IOException {
      DataFileStream<Stock> reader =
          new DataFileStream<Stock>(
              is,
              new SpecificDatumReader<Stock>(Stock.class));
  
      for (Stock a : reader) {
        System.out.println(ToStringBuilder.reflectionToString(a,
            ToStringStyle.SIMPLE_STYLE
        ));
      }
  
      IOUtils.closeStream(is);
      IOUtils.closeStream(reader);
    }
  }
  