/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.hadoop.chukwa.util;
  
  
  import java.io.IOException;
  import java.net.URI;
  import java.net.URISyntaxException;
  import org.apache.hadoop.chukwa.conf.ChukwaConfiguration;
  import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord;
  import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecordKey;
  import org.apache.hadoop.fs.FileSystem;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.io.SequenceFile;
  
  public class DumpRecord {
  
    /**
     * @param args
     * @throws URISyntaxException
     * @throws IOException
     */
    public static void main(String[] args) throws IOException, URISyntaxException {
      System.out.println("Input file:" + args[0]);
  
      ChukwaConfiguration conf = new ChukwaConfiguration();
      String fsName = conf.get("writer.hdfs.filesystem");
      FileSystem fs = FileSystem.get(new URI(fsName), conf);
  
      SequenceFile.Reader r = new SequenceFile.Reader(fs, new Path(args[0]), conf);
  
      ChukwaRecordKey key = new ChukwaRecordKey();
      ChukwaRecord record = new ChukwaRecord();
      try {
        while (r.next(key, record)) {
          System.out.println("\t ===== KEY   ===== ");
  
          System.out.println("DataType: " + key.getReduceType());
          System.out.println("\nKey: " + key.getKey());
          System.out.println("\t ===== Value =====");
  
          String[] fields = record.getFields();
          System.out.println("Timestamp : " + record.getTime());
          for (String field : fields) {
            System.out.println("[" + field + "] :" + record.getValue(field));
          }
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
  
    }
  
  }