Torque.java

/*
 * 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.Date;
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;

public class Torque extends AbstractProcessor {

  static Logger log = Logger.getLogger(Torque.class);
  private SimpleDateFormat sdf = null;

  public Torque() {
    // TODO move that to config
    sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS");
  }

  @Override
  protected void parse(String recordEntry,
      OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter)
      throws Throwable {
    try {
      String dStr = recordEntry.substring(0, 23);
      int start = 24;
      int idx = recordEntry.indexOf(' ', start);
      start = idx + 1;
      idx = recordEntry.indexOf(' ', start);
      String body = recordEntry.substring(idx + 1);
      body.replaceAll("\n", "");
      Date d = sdf.parse(dStr);
      String[] kvpairs = body.split(", ");

      ChukwaRecord record = new ChukwaRecord();
      String kvpair = null;
      String[] halves = null;
      boolean containRecord = false;
      for (int i = 0; i < kvpairs.length; ++i) {
        kvpair = kvpairs[i];
        if (kvpair.indexOf("=") >= 0) {
          halves = kvpair.split("=");
          record.add(halves[0], halves[1]);
          containRecord = true;
        }
      }
      if (record.containsField("Machine")) {
        buildGenericRecord(record, null, d.getTime(), "HodMachine");
      } else {
        buildGenericRecord(record, null, d.getTime(), "HodJob");
      }
      if (containRecord) {
        output.collect(key, record);
      }
    } catch (ParseException e) {
      e.printStackTrace();
      log.warn("Wrong format in Torque [" + recordEntry + "]", e);
      throw e;
    } catch (IOException e) {
      e.printStackTrace();
      log.warn("Unable to collect output in Torque [" + recordEntry + "]", e);
      throw e;
    }

  }

  public String getDataType() {
    return Torque.class.getName();
  }

}