TorqueDataLoader.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.inputtools.mdl;


import java.lang.Thread;
import java.lang.management.ManagementFactory;
import java.io.FileOutputStream;
import java.sql.SQLException;
import java.io.IOException;
import java.io.File;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.chukwa.inputtools.mdl.TorqueInfoProcessor;
import org.apache.hadoop.chukwa.inputtools.mdl.DataConfig;
import org.apache.hadoop.chukwa.util.PidFile;

public class TorqueDataLoader {
  private static Log log = LogFactory.getLog("TorqueDataLoader");

  private TorqueInfoProcessor tp = null;
  private PidFile loader = null;

  public TorqueDataLoader(DataConfig mdlConfig, int interval) {
    log.info("in torqueDataLoader");
    tp = new TorqueInfoProcessor(mdlConfig, interval);
    loader = new PidFile("TorqueDataLoader");
  }

  public void run() {
    boolean first = true;
    while (true) {
      try {
        tp.setup(first);
        first = false;
      } catch (Exception ex) {
        tp.shutdown();

        if (first) {
          log.error("setup error");
          ex.printStackTrace();
          loader.clean(); // only call before system.exit()
          System.exit(1);
        }
        log.error("setup fail, retry after 10 minutes");
        try {
          Thread.sleep(600 * 1000);
        } catch (InterruptedException e) {
          // TODO Auto-generated catch block
          log.error(e.getMessage());
          // e.printStackTrace();
        }
        continue;

      }

      try {
        tp.run_forever();
      } catch (SQLException ex) {
        tp.shutdown();
        log.error("processor died, reconnect again after 10 minutes");
        ex.printStackTrace();
        try {
          Thread.sleep(600 * 1000);
        } catch (InterruptedException e) {
          // TODO Auto-generated catch block
          log.error(e.getMessage());
          // e.printStackTrace();
        }
      } catch (Exception ex) {
        try {
          Thread.sleep(16 * 1000);
        } catch (InterruptedException e) {
          ;
        }
        tp.shutdown();
        log.error("process died...." + ex.getMessage());
        loader.clean();
        System.exit(1);
      }

    }// while

  }

  public static void main(String[] args) {
    /*
     * if (args.length < 2 || args[0].startsWith("-h") ||
     * args[0].startsWith("--h")) {
     * System.out.println("Usage: UtilDataLoader interval(sec)");
     * System.exit(1);puvw-./chij } String interval = args[0]; int
     * intervalValue=Integer.parseInt(interval);
     */
    int intervalValue = 60;

    DataConfig mdlConfig = new DataConfig();

    TorqueDataLoader tdl = new TorqueDataLoader(mdlConfig, intervalValue);
    tdl.run();

  }

}