/*
    * 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.extraction.demux.processor.mapper;
  
  
  import java.io.IOException;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Calendar;
  import java.util.Date;
  
  import org.apache.hadoop.chukwa.datacollection.writer.hbase.Annotation.Table;
  import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord;
  import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecordKey;
  import org.apache.hadoop.mapred.OutputCollector;
  import org.apache.hadoop.mapred.Reporter;
  import org.apache.log4j.Logger;
  
  @Table(name="SystemMetrics",columnFamily="SysLog")
  public class SysLog extends AbstractProcessor {
  
    static Logger log = Logger.getLogger(SysLog.class);
    private static final String reduceType = "SysLog";  
    private SimpleDateFormat sdf = null;
  
    public SysLog() {
      sdf = new SimpleDateFormat("MMM d HH:mm:ss");
    }
  
    @Override
    protected void parse(String recordEntry,
        OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter)
        throws Throwable {
      try {
        String dStr = recordEntry.substring(0, 15);
        int start = 15;
        int idx = recordEntry.indexOf(' ', start);
        start = idx + 1;
        idx = recordEntry.indexOf(' ', start);
        String body = recordEntry.substring(idx + 1);
        body = body.replaceAll("\n", "");
  
        Calendar convertDate = Calendar.getInstance();
        Date d = sdf.parse(dStr);
        int year = convertDate.get(Calendar.YEAR);
        convertDate.setTime(d);
        convertDate.set(Calendar.YEAR, year);
        if(convertDate.getTimeInMillis() > Calendar.getInstance().getTimeInMillis()) {
          convertDate.set(Calendar.YEAR, year - 1);
        }
  
        ChukwaRecord record = new ChukwaRecord();
        buildGenericRecord(record, recordEntry, convertDate.getTime().getTime(),
            reduceType);
        output.collect(key, record);
      } catch (ParseException e) {
        e.printStackTrace();
        log.warn("Wrong format in SysLog [" + recordEntry + "]", e);
        throw e;
      } catch (IOException e) {
        e.printStackTrace();
        log.warn("Unable to collect output in SysLog [" + recordEntry + "]", e);
        throw e;
      }
  
    }
  
    public String getDataType() {
      return SysLog.class.getName();
    }
  
  }