Top

/*
 * 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.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.hadoop.chukwa.datacollection.writer.hbase.Annotation.Table;
import org.apache.hadoop.chukwa.datacollection.writer.hbase.Annotation.Tables;
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;

@Tables(annotations={
@Table(name="SystemMetrics",columnFamily="SystemMetrics"),
@Table(name="SystemMetrics",columnFamily="Top")
})
public class Top extends AbstractProcessor {
  static Logger log = Logger.getLogger(Top.class);
  public final String reduceType = "SystemMetrics";
  public final String recordType = this.getClass().getName();

  private static String regex = "([0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}) (.*?) (.*?): ";
  private static Pattern p = null;

  private Matcher matcher = null;
  private SimpleDateFormat sdf = null;

  public Top() {
    // TODO move that to config
    sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
    p = Pattern.compile(regex);
  }

  @Override
  protected void parse(String recordEntry,
      OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter)
      throws Throwable {

    log.debug("Top record: [" + recordEntry + "] type[" + chunk.getDataType()
        + "]");

    matcher = p.matcher(recordEntry);
    while (matcher.find()) {
      log.debug("Top Processor Matches");

      try {
        Date d = sdf.parse(matcher.group(1).trim());

        ChukwaRecord record = new ChukwaRecord();
        String[] lines = recordEntry.split("\n");
        int i = 0;
        if (lines.length < 2) {
          return;
        }
        String summaryString = "";
        while (!lines[i].equals("")) {
          summaryString = summaryString + lines[i] + "\n";
          i++;
        }
        i++;
        record = new ChukwaRecord();
        key = new ChukwaRecordKey();
        parseSummary(record, summaryString);
        this.buildGenericRecord(record, null, d.getTime(), reduceType);
        output.collect(key, record);

        StringBuffer buffer = new StringBuffer();
        // FIXME please validate this
        while (i < lines.length) {
          record = null;
          buffer.append(lines[i] + "\n");
          i++;

        }
        record = new ChukwaRecord();
        key = new ChukwaRecordKey();
        this.buildGenericRecord(record, buffer.toString(), d.getTime(), recordType);
        // Output Top info to database
        output.collect(key, record);

        // End of parsing
      } catch (Exception e) {
        e.printStackTrace();
        throw e;
      }
    }
  }

  public void parseSummary(ChukwaRecord record, String header) {
    HashMap<String, Object> keyValues = new HashMap<String, Object>();
    String[] headers = header.split("\n");
    Pattern p = Pattern.compile("top - (.*?) up (.*?),\\s+(\\d+) users");
    Matcher matcher = p.matcher(headers[0]);
    if (matcher.find()) {
      record.add("uptime", matcher.group(2));
      record.add("users", matcher.group(3));
    }
    p = Pattern
        .compile("Tasks:\\s+(\\d+) total,\\s+(\\d+) running,\\s+(\\d+) sleeping,\\s+(\\d+) stopped,\\s+(\\d+) zombie");
    matcher = p.matcher(headers[1]);
    if (matcher.find()) {
      record.add("tasks_total", matcher.group(1));
      record.add("tasks_running", matcher.group(2));
      record.add("tasks_sleeping", matcher.group(3));
      record.add("tasks_stopped", matcher.group(4));
      record.add("tasks_zombie", matcher.group(5));
    }
    p = Pattern
        .compile("Cpu\\(s\\):\\s*(.*?)%\\s*us,\\s*(.*?)%\\s*sy,\\s*(.*?)%\\s*ni,\\s*(.*?)%\\s*id,\\s*(.*?)%\\s*wa,\\s*(.*?)%\\s*hi,\\s*(.*?)%\\s*si");
    matcher = p.matcher(headers[2]);
    if (matcher.find()) {
      record.add("cpu_user%", matcher.group(1));
      record.add("cpu_sys%", matcher.group(2));
      record.add("cpu_nice%", matcher.group(3));
      record.add("cpu_wait%", matcher.group(4));
      record.add("cpu_hi%", matcher.group(5));
      record.add("cpu_si%", matcher.group(6));
    }
    p = Pattern
        .compile("Mem:\\s+(.*?)k total,\\s+(.*?)k used,\\s+(.*?)k free,\\s+(.*?)k buffers");
    matcher = p.matcher(headers[3]);
    if (matcher.find()) {
      record.add("mem_total", matcher.group(1));
      record.add("mem_used", matcher.group(2));
      record.add("mem_free", matcher.group(3));
      record.add("mem_buffers", matcher.group(4));
    }
    p = Pattern
        .compile("Swap:\\s+(.*?)k total,\\s+(.*?)k used,\\s+(.*?)k free,\\s+(.*?)k cached");
    matcher = p.matcher(headers[4]);
    if (matcher.find()) {
      record.add("swap_total", matcher.group(1));
      record.add("swap_used", matcher.group(2));
      record.add("swap_free", matcher.group(3));
      record.add("swap_cached", matcher.group(4));
    }
    Iterator<String> ki = keyValues.keySet().iterator();
    while (ki.hasNext()) {
      String key = ki.next();
      log.debug(key + ":" + keyValues.get(key));
    }
  }

  public String getDataType() {
    return recordType;
  }
}