content: /*
   * 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 java.util.Iterator;
  import java.util.Map;
  
  import org.apache.hadoop.chukwa.datacollection.writer.hbase.Annotation.Tables;
  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.chukwa.extraction.engine.Record;
  import org.apache.hadoop.mapred.OutputCollector;
  import org.apache.hadoop.mapred.Reporter;
  import org.apache.log4j.Logger;
  import org.json.simple.JSONObject;
  import org.json.simple.JSONValue;
  
  @Tables(annotations={
  @Table(name="Hadoop",columnFamily="jvm_metrics"),
  @Table(name="Hadoop",columnFamily="mapred_metrics"),
  @Table(name="Hadoop",columnFamily="dfs_metrics"),
  @Table(name="Hadoop",columnFamily="dfs_namenode"),
  @Table(name="Hadoop",columnFamily="dfs_FSNamesystem"),
  @Table(name="Hadoop",columnFamily="dfs_datanode"),
  @Table(name="Hadoop",columnFamily="mapred_jobtracker"),
  @Table(name="Hadoop",columnFamily="mapred_shuffleInput"),
  @Table(name="Hadoop",columnFamily="mapred_shuffleOutput"),
  @Table(name="Hadoop",columnFamily="mapred_tasktracker"),
  @Table(name="Hadoop",columnFamily="rpc_metrics")
  })
  public class HadoopMetricsProcessor extends AbstractProcessor {  
    static Logger log = Logger.getLogger(HadoopMetricsProcessor.class);
    static final String chukwaTimestampField = "timestamp";
    static final String contextNameField = "contextName";
    static final String recordNameField = "recordName";
  
    private SimpleDateFormat sdf = null;
  
    public HadoopMetricsProcessor() {
      // TODO move that to config
      sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
    }
  
    @SuppressWarnings("unchecked")
    @Override
    protected void parse(String recordEntry,
        OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter)
        throws Throwable {
      try {
        // Look for syslog PRI, if PRI is not found, start from offset of 0.
        int idx = recordEntry.indexOf('>', 0);  
        String dStr = recordEntry.substring(idx+1, idx+23);
        int start = idx + 25;
        idx = recordEntry.indexOf(' ', start);
        // String level = recordEntry.substring(start, idx);
        start = idx + 1;
        idx = recordEntry.indexOf(' ', start);
        // String className = recordEntry.substring(start, idx-1);
        String body = recordEntry.substring(idx + 1);
        body = body.replaceAll("\n", "");
        // log.info("record [" + recordEntry + "] body [" + body +"]");
        Date d = sdf.parse(dStr);
  
        start = body.indexOf('{');
        JSONObject json = (JSONObject) JSONValue.parse(body.substring(start));
  
        ChukwaRecord record = new ChukwaRecord();
        StringBuilder datasource = new StringBuilder();
        String contextName = null;
        String recordName = null;
  
        Iterator<Map.Entry<String, ?>> ki = json.entrySet().iterator();
        while (ki.hasNext()) {
          Map.Entry<String, ?> entry = ki.next();
          String keyName = entry.getKey();
          Object value = entry.getValue();
          if (chukwaTimestampField.intern() == keyName.intern()) {
            d = new Date((Long) value);
            Calendar cal = Calendar.getInstance();
            cal.setTimeInMillis(d.getTime());
            cal.set(Calendar.SECOND, 0);
            cal.set(Calendar.MILLISECOND, 0);
            d.setTime(cal.getTimeInMillis());
          } else if (contextNameField.intern() == keyName.intern()) {
            contextName = (String) value;
          } else if (recordNameField.intern() == keyName.intern()) {
            recordName = (String) value;
            record.add(keyName, value.toString());
          } else {
            if(json.get(keyName)!=null) {
              record.add(keyName, value.toString());
            }
          }
        }
        if(contextName!=null) {
          datasource.append(contextName);
          datasource.append("_");
        }
        datasource.append(recordName);
        record.add("cluster", chunk.getTag("cluster"));
        if(contextName!=null && contextName.equals("jvm")) {
          buildJVMRecord(record, d.getTime(), datasource.toString());        
        } else {
          buildGenericRecord(record, null, d.getTime(), datasource.toString());
        }
        output.collect(key, record);
      } catch (ParseException e) {
        log.warn("Wrong format in HadoopMetricsProcessor [" + recordEntry + "]",
            e);
        throw e;
      } catch (IOException e) {
        log.warn("Unable to collect output in HadoopMetricsProcessor ["
            + recordEntry + "]", e);
        throw e;
      } catch (Exception e) {
        log.warn("Wrong format in HadoopMetricsProcessor [" + recordEntry + "]",
            e);
        throw e;
      }
  
    }
  
    protected void buildJVMRecord(ChukwaRecord record, long timestamp, String dataSource) {
      calendar.setTimeInMillis(timestamp);
      calendar.set(Calendar.MINUTE, 0);
      calendar.set(Calendar.SECOND, 0);
      calendar.set(Calendar.MILLISECOND, 0);
  
      key.setKey("" + calendar.getTimeInMillis() + "/" + chunk.getSource() + ":" + 
          record.getValue("processName")+ "/" + timestamp);
      key.setReduceType(dataSource);
      record.setTime(timestamp);
  
      record.add(Record.tagsField, chunk.getTags());
      record.add(Record.sourceField, chunk.getSource());
      record.add(Record.applicationField, chunk.getStreamName());
    }
    
    public String getDataType() {
      return HadoopMetricsProcessor.class.getName();
    }
  
  }
  