/*
    * 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.datacollection.writer.hbase;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord;
  import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecordKey;
  import org.apache.hadoop.hbase.client.Put;
  
  public class OutputCollector implements
      org.apache.hadoop.mapred.OutputCollector<ChukwaRecordKey, ChukwaRecord> {
    
    private List<Put> buffers;
    private StringBuffer s = new StringBuffer();
    private byte[] rowKey = null;
    private byte[] cf = null;
    private long now = 0L;
  
    public OutputCollector() {
      buffers = new ArrayList<Put>();
    }
    
    @Override
    public void collect(ChukwaRecordKey key, ChukwaRecord value) throws IOException {
      String[] keyParts = key.getKey().split("/");
      s.setLength(0);
      s.append(keyParts[2]);
      s.append("-");
      s.append(keyParts[1]);
      
      rowKey = s.toString().getBytes();
  
      cf = key.getReduceType().getBytes();
      now = value.getTime();
  
      Put kv = new Put(rowKey);
      for(String field : value.getFields()) {
          kv.add(cf, field.getBytes(), now , value.getValue(field).getBytes());
      }  
      buffers.add(kv);  
    }
  
    public List<Put> getKeyValues() {
      return buffers;
    }
  
    public void clear() {
      s.setLength(0);
      rowKey = null;
      cf = null;
      buffers.clear();
    }
    
  }