content: package hip.ch3.avro;
  
  import hip.ch3.avro.gen.Stock;
  import hip.util.Cli;
  import hip.util.CliCommonOpts;
  import org.apache.avro.Schema;
  import org.apache.avro.file.CodecFactory;
  import org.apache.avro.file.DataFileWriter;
  import org.apache.avro.generic.GenericData;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.apache.avro.generic.GenericRecord;
  import org.apache.avro.hadoop.io.AvroKeyValue;
  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.File;
  import java.io.IOException;
  import java.io.OutputStream;
  
  public class AvroKeyValueFileWrite 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 AvroKeyValueFileWrite(), args);
      System.exit(res);
    }
  
    /**
     * Write 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.IOFileOpts.values()).build();
      int result = cli.runCmd();
  
      if (result != 0) {
        return result;
      }
  
      File inputFile = new File(cli.getArgValueAsString(CliCommonOpts.IOFileOpts.INPUT));
      Path outputPath = new Path(cli.getArgValueAsString(CliCommonOpts.IOFileOpts.OUTPUT));
  
      Configuration conf = super.getConf();
  
      FileSystem hdfs = FileSystem.get(conf);
  
      OutputStream os = hdfs.create(outputPath);
      writeToAvro(inputFile, os);
  
      return 0;
    }
  
    public static Schema SCHEMA = AvroKeyValue.getSchema(
        Schema.create(Schema.Type.STRING), Stock.SCHEMA$);
  
    public static void writeToAvro(File inputFile, OutputStream outputStream)
        throws IOException {
  
      DataFileWriter<GenericRecord> writer =
          new DataFileWriter<GenericRecord>(
              new GenericDatumWriter<GenericRecord>());
  
      writer.setCodec(CodecFactory.snappyCodec());
      writer.create(SCHEMA, outputStream);
  
      for (Stock stock : AvroStockUtils.fromCsvFile(inputFile)) {
  
        AvroKeyValue<CharSequence, Stock> record
            = new AvroKeyValue<CharSequence, Stock>(new GenericData.Record(SCHEMA));
        record.setKey(stock.getSymbol());
        record.setValue(stock);
  
        writer.append(record.get());
      }
  
      IOUtils.closeStream(writer);
      IOUtils.closeStream(outputStream);
    }
  
  }
  