Package sos.scheduler.file

Source Code of sos.scheduler.file.JobSchedulerCanWrite

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package sos.scheduler.file;


import java.util.regex.Pattern;

import sos.spooler.Job_impl;
import sos.spooler.Variable_set;
import sos.util.SOSLogger;
import sos.util.SOSSchedulerLogger;
import sos.util.SOSFileOperations;

/**
* This job checks for file existence of one file or several files of a directory.
* It can be used standalone or as an order driven job.
*
* @author Uwe Risse <uwe.risse@sos-berlin.com>
* @since  2006-12-08
*/
public class JobSchedulerCanWrite extends Job_impl {
 
  private SOSLogger logger = null;
 
 
  /**
   * Implementierung f�r Spooler API.
   * Initialisierungmethode f�r den Scheduler.
   * @return boolean
   */
  public boolean spooler_init() {
   
    try {
     
      try {
        this.logger = new SOSSchedulerLogger(this.spooler_log);
      } catch (Exception e) {
        throw new Exception("error occurred instantiating logger: " + e.getMessage());
      }
     
      return true;
    } catch (Exception e) {
      try {
        if ( logger!=null ) logger.error("error occurred in spooler_init(): " + e.getMessage());
      } catch (Exception x) {}
     
      return false;
    }
  }
 
  /**
   * Implementierung f�r Spooler API. L�uft bis return = false
   * @return boolean
   */
  public boolean spooler_process() {
   
    boolean rc = false;
   
    String name = null;
   
    String file = null;
    String fileSpec = null;
   
   
    try {
     
      // Job oder Order
      Variable_set params = spooler.create_variable_set();
      if (spooler_task.params() != null) params.merge(spooler_task.params());
      if (spooler_job.order_queue() != null && spooler_task.order().params() != null)
        params.merge(spooler_task.order().params());
     
      // mandatory parameters
      name = "file";
      if ( params.var(name)!=null && params.var(name).length()>0 )       
        file = params.var(name);
      else
        throw new Exception("job parameter is missing: ["+name+"]");
     
      //To make orderparams available for substitution in orderparam value
      while (file.matches("^.*%[^%]+%.*$")) {
         String p = file.replaceFirst("^.*%([^%]+)%.*$", "$1");
         String s = params.var(p);
         s = s.replace('\\','/');
         file = file.replaceAll("%"+p+"%", s);
         logger.debug("processing job parameter ["+name+"]: substitute %"+p+"% with "+s);
        }
       
      logger.info(".. job parameter ["+name+"]: " + file);

     
      // optional parameters
      name = "file_spec";
      if ( params.var(name)!=null && params.var(name).length()>0 ) {
        fileSpec = params.var(name);
        logger.info(".. job parameter ["+name+"]: " + fileSpec);
      }
     
     
      rc = SOSFileOperations.canWrite(file, fileSpec, Pattern.CASE_INSENSITIVE, logger);
     
      if (!rc && params.value("gracious") != null && params.value("gracious").equalsIgnoreCase("all")) {
        return (spooler_job.order_queue() != null);
      }
      else
      if (!rc && params.value("gracious") != null &&
      (params.value("gracious").equalsIgnoreCase("yes") || params.value("gracious").equalsIgnoreCase("true") || params.value("gracious").equals("1") ) ) {
        return false;
      }
      else
      if ( !rc ) {
        throw new Exception("check failed for file: " + file);
      }
      else {
        return (spooler_job.order_queue() != null) ? rc : false;
      }
     
    } catch (Exception e) {
      try {
        logger.error("error occurred in JobSchedulerCanWrite: " + e.getMessage());
      } catch(Exception x) {}
     
      return false;
    }
  }
 
 
  /**
   * Implementierung f�r Spooler API. Wird beim Entladen aufgerufen und
   * schlie�t die Datenbankverbindung.
   */
  public void spooler_exit() {
   
    try {
     
    } catch (Exception e) {
      // no error processing at job level
    } finally {
    }
  }
}
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