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/**
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 *  '$RCSfile$'
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 *    Purpose: A class to asyncronously do delta-T replication checking
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 *  Copyright: 2000 Regents of the University of California and the
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 *             National Center for Ecological Analysis and Synthesis
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 *    Authors: Chad Berkley
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 *
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 *   '$Author: leinfelder $'
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 *     '$Date: 2011-11-07 10:55:28 -0800 (Mon, 07 Nov 2011) $'
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 * '$Revision: 6611 $'
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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package edu.ucsb.nceas.metacat.replication;
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import java.io.ByteArrayInputStream;
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import java.io.InputStream;
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import java.io.StringReader;
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import java.net.InetAddress;
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import java.net.URL;
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import java.net.UnknownHostException;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Timestamp;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Hashtable;
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import java.util.TimerTask;
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import java.util.Vector;
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import javax.xml.bind.DatatypeConverter;
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import org.apache.log4j.Logger;
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import org.dataone.service.types.v1.SystemMetadata;
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import org.dataone.service.util.TypeMarshaller;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.XMLReader;
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import org.xml.sax.helpers.DefaultHandler;
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import org.xml.sax.helpers.XMLReaderFactory;
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import edu.ucsb.nceas.metacat.CatalogMessageHandler;
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import edu.ucsb.nceas.metacat.DBUtil;
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import edu.ucsb.nceas.metacat.DocInfoHandler;
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import edu.ucsb.nceas.metacat.DocumentImpl;
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import edu.ucsb.nceas.metacat.DocumentImplWrapper;
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import edu.ucsb.nceas.metacat.EventLog;
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import edu.ucsb.nceas.metacat.IdentifierManager;
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import edu.ucsb.nceas.metacat.McdbDocNotFoundException;
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import edu.ucsb.nceas.metacat.accesscontrol.AccessControlForSingleFile;
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import edu.ucsb.nceas.metacat.accesscontrol.XMLAccessDAO;
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import edu.ucsb.nceas.metacat.client.InsufficientKarmaException;
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import edu.ucsb.nceas.metacat.database.DBConnection;
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import edu.ucsb.nceas.metacat.database.DBConnectionPool;
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import edu.ucsb.nceas.metacat.database.DatabaseService;
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import edu.ucsb.nceas.metacat.dataone.hazelcast.HazelcastService;
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import edu.ucsb.nceas.metacat.properties.PropertyService;
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import edu.ucsb.nceas.metacat.shared.HandlerException;
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import edu.ucsb.nceas.metacat.util.MetacatUtil;
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import edu.ucsb.nceas.metacat.util.ReplicationUtil;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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/**
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 * This class handles deltaT replication checking.  Whenever this TimerTask
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 * is fired it checks each server in xml_replication for updates and updates
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 * the local db as needed.
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 */
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public class ReplicationHandler extends TimerTask
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{
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  int serverCheckCode = 1;
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  ReplicationServerList serverList = null;
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  //PrintWriter out;
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//  private static final AbstractDatabase dbAdapter = MetacatUtil.dbAdapter;
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  private static Logger logReplication = Logger.getLogger("ReplicationLogging");
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  private static Logger logMetacat = Logger.getLogger(ReplicationHandler.class);
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  private static Logger logD1 = Logger.getLogger("DataOneLogger");
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  private static int DOCINSERTNUMBER = 1;
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  private static int DOCERRORNUMBER  = 1;
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  private static int REVINSERTNUMBER = 1;
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  private static int REVERRORNUMBER  = 1;
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  private static int _xmlDocQueryCount = 0;
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  private static int _xmlRevQueryCount = 0;
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  private static long _xmlDocQueryTime = 0;
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  private static long _xmlRevQueryTime = 0;
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  public ReplicationHandler()
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  {
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    //this.out = o;
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    serverList = new ReplicationServerList();
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  }
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  public ReplicationHandler(int serverCheckCode)
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  {
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    //this.out = o;
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    this.serverCheckCode = serverCheckCode;
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    serverList = new ReplicationServerList();
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  }
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  /**
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   * Method that implements TimerTask.run().  It runs whenever the timer is
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   * fired.
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   */
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  public void run()
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  {
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    //find out the last_checked time of each server in the server list and
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    //send a query to each server to see if there are any documents in
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    //xml_documents with an update_date > last_checked
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      //if serverList is null, metacat don't need to replication
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      if (serverList==null||serverList.isEmpty())
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      {
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        return;
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      }
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      updateCatalog();
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      update();
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      //conn.close();
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  }
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  /**
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   * Method that uses revision tagging for replication instead of update_date.
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   */
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  private void update()
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  {
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	  _xmlDocQueryCount = 0;
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	  _xmlRevQueryCount = 0;
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	  _xmlDocQueryTime = 0;
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	  _xmlRevQueryTime = 0;
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    /*
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     Pseudo-algorithm
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     - request a doc list from each server in xml_replication
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     - check the rev number of each of those documents agains the
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       documents in the local database
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     - pull any documents that have a lesser rev number on the local server
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       from the remote server
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     - delete any documents that still exist in the local xml_documents but
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       are in the deletedDocuments tag of the remote host response.
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     - update last_checked to keep track of the last time it was checked.
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       (this info is theoretically not needed using this system but probably
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       should be kept anyway)
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    */
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    ReplicationServer replServer = null; // Variable to store the
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                                        // ReplicationServer got from
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                                        // Server list
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    String server = null; // Variable to store server name
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//    String update;
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    Vector<String> responses = new Vector<String>();
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    URL u;
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    long replicationStartTime = System.currentTimeMillis();
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    long timeToGetServerList = 0;
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    //Check for every server in server list to get updated list and put
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    // them in to response
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    long startTimeToGetServers = System.currentTimeMillis();
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    for (int i=0; i<serverList.size(); i++)
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    {
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        // Get ReplicationServer object from server list
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        replServer = serverList.serverAt(i);
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        // Get server name from ReplicationServer object
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        server = replServer.getServerName().trim();
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        String result = null;
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        logReplication.info("ReplicationHandler.update - full update started to: " + server);
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        // Send command to that server to get updated docid information
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        try
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        {
190
          u = new URL("https://" + server + "?server="
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          +MetacatUtil.getLocalReplicationServerName()+"&action=update");
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          logReplication.info("ReplicationHandler.update - Sending infomation " +u.toString());
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          result = ReplicationService.getURLContent(u);
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        }
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        catch (Exception e)
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        {
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          logMetacat.error("ReplicationHandler.update - " + ReplicationService.METACAT_REPL_ERROR_MSG);
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          logReplication.error( "ReplicationHandler.update - Failed to get updated doc list "+
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                       "for server " + server + " because "+e.getMessage());
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          continue;
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        }
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        //logReplication.info("ReplicationHandler.update - docid: "+server+" "+result);
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        //check if result have error or not, if has skip it.
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        if (result.indexOf("<error>")!=-1 && result.indexOf("</error>")!=-1)
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        {
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          logMetacat.error("ReplicationHandler.update - " + ReplicationService.METACAT_REPL_ERROR_MSG);
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          logReplication.error( "ReplicationHandler.update - Failed to get updated doc list "+
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                       "for server " + server + " because "+result);
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          continue;
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        }
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        //Add result to vector
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        responses.add(result);
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    }
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    timeToGetServerList = System.currentTimeMillis() - startTimeToGetServers;
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    //make sure that there is updated file list
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    //If response is null, metacat don't need do anything
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    if (responses==null || responses.isEmpty())
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    {
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    	logMetacat.error("ReplicationHandler.update - " + ReplicationService.METACAT_REPL_ERROR_MSG);
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        logReplication.info( "ReplicationHandler.update - No updated doc list for "+
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                           "every server and failed to replicate");
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        return;
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    }
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    //logReplication.info("ReplicationHandler.update - Responses from remote metacat about updated "+
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    //               "document information: "+ responses.toString());
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    long totalServerListParseTime = 0;
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    // go through response vector(it contains updated vector and delete vector
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    for(int i=0; i<responses.size(); i++)
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    {
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    	long startServerListParseTime = System.currentTimeMillis();
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    	XMLReader parser;
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    	ReplMessageHandler message = new ReplMessageHandler();
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    	try
239
        {
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          parser = initParser(message);
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        }
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        catch (Exception e)
243
        {
244
          logMetacat.error("ReplicationHandler.update - " + ReplicationService.METACAT_REPL_ERROR_MSG);
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          logReplication.error("ReplicationHandler.update - Failed to replicate becaue couldn't " +
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                                " initParser for message and " +e.getMessage());
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           // stop replication
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           return;
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        }
250
    	
251
        try
252
        {
253
          parser.parse(new InputSource(
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                     new StringReader(
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                     (String)(responses.elementAt(i)))));
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        }
257
        catch(Exception e)
258
        {
259
          logMetacat.error("ReplicationHandler.update - " + ReplicationService.METACAT_REPL_ERROR_MSG);
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          logReplication.error("ReplicationHandler.update - Couldn't parse one responses "+
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                                   "because "+ e.getMessage());
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          continue;
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        }
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        //v is the list of updated documents
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        Vector<Vector<String>> updateList = new Vector<Vector<String>>(message.getUpdatesVect());
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        logReplication.info("ReplicationHandler.update - The document list size is "+updateList.size()+ " from "+message.getServerName());
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        //d is the list of deleted documents
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        Vector<Vector<String>> deleteList = new Vector<Vector<String>>(message.getDeletesVect());
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        logReplication.info("ReplicationHandler.update - Update vector size: "+ updateList.size()+" from "+message.getServerName());
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        logReplication.info("ReplicationHandler.update - Delete vector size: "+ deleteList.size()+" from "+message.getServerName());
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        logReplication.info("ReplicationHandler.update - The delete document list size is "+deleteList.size()+" from "+message.getServerName());
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        // go though every element in updated document vector
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        handleDocList(updateList, DocumentImpl.DOCUMENTTABLE);
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        //handle deleted docs
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        for(int k=0; k<deleteList.size(); k++)
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        { //delete the deleted documents;
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          Vector<String> w = new Vector<String>(deleteList.elementAt(k));
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          String docId = (String)w.elementAt(0);
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          try
280
          {
281
            handleDeleteSingleDocument(docId, server);
282
          }
283
          catch (Exception ee)
284
          {
285
            continue;
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          }
287
        }//for delete docs
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        // handle replicate doc in xml_revision
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        Vector<Vector<String>> revisionList = new Vector<Vector<String>>(message.getRevisionsVect());
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        logReplication.info("ReplicationHandler.update - The revision document list size is "+revisionList.size()+ " from "+message.getServerName());
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        handleDocList(revisionList, DocumentImpl.REVISIONTABLE);
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        DOCINSERTNUMBER = 1;
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        DOCERRORNUMBER  = 1;
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        REVINSERTNUMBER = 1;
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        REVERRORNUMBER  = 1;
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298
        // handle system metadata
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        Vector<Vector<String>> systemMetadataList = message.getSystemMetadataVect();
300
        for(int k = 0; k < systemMetadataList.size(); k++) { 
301
        	Vector<String> w = systemMetadataList.elementAt(k);
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        	String guid = (String) w.elementAt(0);
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        	String remoteserver = (String) w.elementAt(1);
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        	try {
305
        		handleSystemMetadata(remoteserver, guid);
306
        	}
307
        	catch (Exception ee) {
308
        		logMetacat.error("Error replicating system metedata for guid: " + guid, ee);
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        		continue;
310
        	}
311
        }
312
        
313
        totalServerListParseTime += (System.currentTimeMillis() - startServerListParseTime);
314
    }//for response
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316
    //updated last_checked
317
    for (int i=0;i<serverList.size(); i++)
318
    {
319
       // Get ReplicationServer object from server list
320
       replServer = serverList.serverAt(i);
321
       try
322
       {
323
         updateLastCheckTimeForSingleServer(replServer);
324
       }
325
       catch(Exception e)
326
       {
327
         continue;
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       }
329
    }//for
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331
    long replicationEndTime = System.currentTimeMillis();
332
    logMetacat.debug("ReplicationHandler.update - Total replication time: " + 
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    		(replicationEndTime - replicationStartTime));
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    logMetacat.debug("ReplicationHandler.update - time to get server list: " + 
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    		timeToGetServerList);
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    logMetacat.debug("ReplicationHandler.update - server list parse time: " + 
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    		totalServerListParseTime);
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    logMetacat.debug("ReplicationHandler.update - 'in xml_documents' total query count: " + 
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    		_xmlDocQueryCount);
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    logMetacat.debug("ReplicationHandler.update - 'in xml_documents' total query time: " + 
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    		_xmlDocQueryTime + " ms");
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    logMetacat.debug("ReplicationHandler.update - 'in xml_revisions' total query count: " + 
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    		_xmlRevQueryCount);
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    logMetacat.debug("ReplicationHandler.update - 'in xml_revisions' total query time: " + 
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    		_xmlRevQueryTime + " ms");;
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  }//update
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  /* Handle replicate single xml document*/
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  private void handleSingleXMLDocument(String remoteserver, String actions,
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                                       String accNumber, String tableName)
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               throws HandlerException
353
  {
354
    DBConnection dbConn = null;
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    int serialNumber = -1;
356
    try
357
    {
358
      // Get DBConnection from pool
359
      dbConn=DBConnectionPool.
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                  getDBConnection("ReplicationHandler.handleSingleXMLDocument");
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      serialNumber=dbConn.getCheckOutSerialNumber();
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      //if the document needs to be updated or inserted, this is executed
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      String readDocURLString = "https://" + remoteserver + "?server="+
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              MetacatUtil.getLocalReplicationServerName()+"&action=read&docid="+accNumber;
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      readDocURLString = MetacatUtil.replaceWhiteSpaceForURL(readDocURLString);
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      URL u = new URL(readDocURLString);
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368
      // Get docid content
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      String newxmldoc = ReplicationService.getURLContent(u);
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      // If couldn't get skip it
371
      if ( newxmldoc.indexOf("<error>")!= -1 && newxmldoc.indexOf("</error>")!=-1)
372
      {
373
         throw new HandlerException("ReplicationHandler.handleSingleXMLDocument - " + newxmldoc);
374
      }
375
      //logReplication.info("xml documnet:");
376
      //logReplication.info(newxmldoc);
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378
      // Try get the docid info from remote server
379
      DocInfoHandler dih = new DocInfoHandler();
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      XMLReader docinfoParser = initParser(dih);
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      String docInfoURLStr = "https://" + remoteserver +
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                       "?server="+MetacatUtil.getLocalReplicationServerName()+
383
                       "&action=getdocumentinfo&docid="+accNumber;
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      docInfoURLStr = MetacatUtil.replaceWhiteSpaceForURL(docInfoURLStr);
385
      URL docinfoUrl = new URL(docInfoURLStr);
386
      logReplication.info("ReplicationHandler.handleSingleXMLDocument - Sending message: " + docinfoUrl.toString());
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      String docInfoStr = ReplicationService.getURLContent(docinfoUrl);
388
      
389
      // strip out the system metadata portion
390
      String systemMetadataXML = ReplicationUtil.getSystemMetadataContent(docInfoStr);
391
   	  docInfoStr = ReplicationUtil.getContentWithoutSystemMetadata(docInfoStr);
392
      
393
      docinfoParser.parse(new InputSource(new StringReader(docInfoStr)));
394
      Hashtable<String, String> docinfoHash = dih.getDocInfo();
395
      // Get home server of the docid
396
      String docHomeServer = docinfoHash.get("home_server");
397
      logReplication.info("ReplicationHandler.handleSingleXMLDocument - doc home server in repl: "+docHomeServer);
398
     
399
      // dates
400
      String createdDateString = docinfoHash.get("date_created");
401
      String updatedDateString = docinfoHash.get("date_updated");
402
      Date createdDate = DatatypeConverter.parseDateTime(createdDateString).getTime();
403
      Date updatedDate = DatatypeConverter.parseDateTime(updatedDateString).getTime();
404
      
405
      //docid should include rev number too
406
      /*String accnum=docId+util.getProperty("document.accNumSeparator")+
407
                                              (String)docinfoHash.get("rev");*/
408
      logReplication.info("ReplicationHandler.handleSingleXMLDocument - docid in repl: "+accNumber);
409
      String docType = docinfoHash.get("doctype");
410
      logReplication.info("ReplicationHandler.handleSingleXMLDocument - doctype in repl: "+docType);
411

    
412
      String parserBase = null;
413
      // this for eml2 and we need user eml2 parser
414
      if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_0_0NAMESPACE))
415
      {
416
         parserBase = DocumentImpl.EML200;
417
      }
418
      else if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_0_1NAMESPACE))
419
      {
420
        parserBase = DocumentImpl.EML200;
421
      }
422
      else if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_1_0NAMESPACE))
423
      {
424
        parserBase = DocumentImpl.EML210;
425
      }
426
      else if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_1_1NAMESPACE))
427
      {
428
        parserBase = DocumentImpl.EML210;
429
      }
430
      // Write the document into local host
431
      DocumentImplWrapper wrapper = new DocumentImplWrapper(parserBase, false);
432
      String newDocid = wrapper.writeReplication(dbConn,
433
                              newxmldoc,
434
                              docinfoHash.get("public_access"),
435
                              null,  /* the dtd text */
436
                              actions,
437
                              accNumber,
438
                              null, //docinfoHash.get("user_owner"),                              
439
                              null, /* null for groups[] */
440
                              docHomeServer,
441
                              remoteserver, tableName, true,// true is for time replication 
442
                              createdDate,
443
                              updatedDate);
444
      
445
      //set the user information
446
      String user = (String) docinfoHash.get("user_owner");
447
      String updated = (String) docinfoHash.get("user_updated");
448
      ReplicationService.updateUserOwner(dbConn, accNumber, user, updated);
449
      
450
      //process extra access rules 
451
      Vector<XMLAccessDAO> xmlAccessDAOList = dih.getAccessControlList();
452
      if (xmlAccessDAOList != null) {
453
      	AccessControlForSingleFile acfsf = new AccessControlForSingleFile(accNumber);
454
      	for (XMLAccessDAO xmlAccessDAO : xmlAccessDAOList) {
455
      		if (!acfsf.accessControlExists(xmlAccessDAO)) {
456
      			acfsf.insertPermissions(xmlAccessDAO);
457
      		}
458
          }
459
      }
460
      
461
      // process system metadata
462
      if (systemMetadataXML != null) {
463
    	  SystemMetadata sysMeta = 
464
    		  TypeMarshaller.unmarshalTypeFromStream(
465
    				  SystemMetadata.class, 
466
    				  new ByteArrayInputStream(systemMetadataXML.getBytes("UTF-8")));
467
    	  // need the guid-to-docid mapping
468
      	  IdentifierManager.getInstance().createMapping(sysMeta.getIdentifier().getValue(), accNumber);
469
      }
470
      
471
      logReplication.info("ReplicationHandler.handleSingleXMLDocument - Successfully replicated doc " + accNumber);
472
      if (tableName.equals(DocumentImpl.DOCUMENTTABLE))
473
      {
474
        logReplication.info("ReplicationHandler.handleSingleXMLDocument - " + DOCINSERTNUMBER + " Wrote xml doc " + accNumber +
475
                                     " into "+tableName + " from " +
476
                                         remoteserver);
477
        DOCINSERTNUMBER++;
478
      }
479
      else
480
      {
481
          logReplication.info("ReplicationHandler.handleSingleXMLDocument - " +REVINSERTNUMBER + " Wrote xml doc " + accNumber +
482
                  " into "+tableName + " from " +
483
                      remoteserver);
484
          REVINSERTNUMBER++;
485
      }
486
      String ip = getIpFromURL(u);
487
      EventLog.getInstance().log(ip, null, ReplicationService.REPLICATIONUSER, accNumber, actions);
488
      
489

    
490
    }//try
491
    catch(Exception e)
492
    {
493
        
494
        if (tableName.equals(DocumentImpl.DOCUMENTTABLE))
495
        {
496
        	logMetacat.error("ReplicationHandler.handleSingleXMLDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
497
        	logReplication.error("ReplicationHandler.handleSingleXMLDocument - " +DOCERRORNUMBER + " Failed to write xml doc " + accNumber +
498
                                       " into "+tableName + " from " +
499
                                           remoteserver + " because "+e.getMessage());
500
          DOCERRORNUMBER++;
501
        }
502
        else
503
        {
504
        	logMetacat.error("ReplicationHandler.handleSingleXMLDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
505
        	logReplication.error("ReplicationHandler.handleSingleXMLDocument - " +REVERRORNUMBER + " Failed to write xml doc " + accNumber +
506
                    " into "+tableName + " from " +
507
                        remoteserver +" because "+e.getMessage());
508
            REVERRORNUMBER++;
509
        }
510
        logMetacat.error("ReplicationHandler.handleSingleXMLDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
511
        logReplication.error("ReplicationHandler.handleSingleXMLDocument - Failed to write doc " + accNumber +
512
                                      " into db because " +e.getMessage());
513
      throw new HandlerException("ReplicationHandler.handleSingleXMLDocument - generic exception " 
514
    		  + "writing Replication: " +e.getMessage());
515
    }
516
    finally
517
    {
518
       //return DBConnection
519
       DBConnectionPool.returnDBConnection(dbConn, serialNumber);
520
    }//finally
521
    logD1.info("replication.create localId:" + accNumber);
522
  }
523

    
524

    
525

    
526
  /* Handle replicate single xml document*/
527
  private void handleSingleDataFile(String remoteserver, String actions,
528
                                    String accNumber, String tableName)
529
               throws HandlerException
530
  {
531
    logReplication.info("ReplicationHandler.handleSingleDataFile - Try to replicate data file: " + accNumber);
532
    DBConnection dbConn = null;
533
    int serialNumber = -1;
534
    try
535
    {
536
      // Get DBConnection from pool
537
      dbConn=DBConnectionPool.
538
                  getDBConnection("ReplicationHandler.handleSinlgeDataFile");
539
      serialNumber=dbConn.getCheckOutSerialNumber();
540
      // Try get docid info from remote server
541
      DocInfoHandler dih = new DocInfoHandler();
542
      XMLReader docinfoParser = initParser(dih);
543
      String docInfoURLString = "https://" + remoteserver +
544
                  "?server="+MetacatUtil.getLocalReplicationServerName()+
545
                  "&action=getdocumentinfo&docid="+accNumber;
546
      docInfoURLString = MetacatUtil.replaceWhiteSpaceForURL(docInfoURLString);
547
      URL docinfoUrl = new URL(docInfoURLString);
548

    
549
      String docInfoStr = ReplicationService.getURLContent(docinfoUrl);
550
      
551
      // strip out the system metadata portion
552
      String systemMetadataXML = ReplicationUtil.getSystemMetadataContent(docInfoStr);
553
   	  docInfoStr = ReplicationUtil.getContentWithoutSystemMetadata(docInfoStr);  
554
   	  
555
      docinfoParser.parse(new InputSource(new StringReader(docInfoStr)));
556
      Hashtable<String, String> docinfoHash = dih.getDocInfo();
557
      
558
      // Get docid name (such as acl or dataset)
559
      String docName = docinfoHash.get("docname");
560
      // Get doc type (eml public id)
561
      String docType = docinfoHash.get("doctype");
562
      // Get docid home sever. it might be different to remoteserver
563
      // because of hub feature
564
      String docHomeServer = docinfoHash.get("home_server");
565
      String createdDateString = docinfoHash.get("date_created");
566
      String updatedDateString = docinfoHash.get("date_updated");
567
      Date createdDate = DatatypeConverter.parseDateTime(createdDateString).getTime();
568
      Date updatedDate = DatatypeConverter.parseDateTime(updatedDateString).getTime();
569
      //docid should include rev number too
570
      /*String accnum=docId+util.getProperty("document.accNumSeparator")+
571
                                              (String)docinfoHash.get("rev");*/
572

    
573
      String datafilePath = PropertyService.getProperty("application.datafilepath");
574
      // Get data file content
575
      String readDataURLString = "https://" + remoteserver + "?server="+
576
                                        MetacatUtil.getLocalReplicationServerName()+
577
                                            "&action=readdata&docid="+accNumber;
578
      readDataURLString = MetacatUtil.replaceWhiteSpaceForURL(readDataURLString);
579
      URL u = new URL(readDataURLString);
580
      InputStream input = ReplicationService.getURLStream(u);
581
      //register data file into xml_documents table and wite data file
582
      //into file system
583
      if ( input != null)
584
      {
585
        DocumentImpl.writeDataFileInReplication(input,
586
                                                datafilePath,
587
                                                docName,docType,
588
                                                accNumber,
589
                                                null,
590
                                                docHomeServer,
591
                                                remoteserver,
592
                                                tableName,
593
                                                true, //true means timed replication
594
                                                createdDate,
595
                                                updatedDate);
596
                                         
597
        //set the user information
598
        String user = (String) docinfoHash.get("user_owner");
599
		String updated = (String) docinfoHash.get("user_updated");
600
        ReplicationService.updateUserOwner(dbConn, accNumber, user, updated);
601
        
602
        //process extra access rules
603
        Vector<XMLAccessDAO> xmlAccessDAOList = dih.getAccessControlList();
604
        if (xmlAccessDAOList != null) {
605
        	AccessControlForSingleFile acfsf = new AccessControlForSingleFile(accNumber);
606
        	for (XMLAccessDAO xmlAccessDAO : xmlAccessDAOList) {
607
        		if (!acfsf.accessControlExists(xmlAccessDAO)) {
608
        			acfsf.insertPermissions(xmlAccessDAO);
609
        		}
610
            }
611
        }
612
        
613
        // process system metadata
614
        if (systemMetadataXML != null) {
615
      	  SystemMetadata sysMeta = 
616
      		TypeMarshaller.unmarshalTypeFromStream(
617
      				  SystemMetadata.class, 
618
      				  new ByteArrayInputStream(systemMetadataXML.getBytes("UTF-8")));
619
      	  // need the guid-to-docid mapping
620
      	  IdentifierManager.getInstance().createMapping(sysMeta.getIdentifier().getValue(), accNumber);
621
        }
622
        
623
        logReplication.info("ReplicationHandler.handleSingleDataFile - Successfully to write datafile " + accNumber);
624
        /*MetacatReplication.replLog("wrote datafile " + accNumber + " from " +
625
                                    remote server);*/
626
        if (tableName.equals(DocumentImpl.DOCUMENTTABLE))
627
        {
628
          logReplication.info("ReplicationHandler.handleSingleDataFile - " + DOCINSERTNUMBER + " Wrote data file" + accNumber +
629
                                       " into "+tableName + " from " +
630
                                           remoteserver);
631
          DOCINSERTNUMBER++;
632
        }
633
        else
634
        {
635
            logReplication.info("ReplicationHandler.handleSingleDataFile - " + REVINSERTNUMBER + " Wrote data file" + accNumber +
636
                    " into "+tableName + " from " +
637
                        remoteserver);
638
            REVINSERTNUMBER++;
639
        }
640
        String ip = getIpFromURL(u);
641
        EventLog.getInstance().log(ip, null, ReplicationService.REPLICATIONUSER, accNumber, actions);
642
        
643
      }//if
644
      else
645
      {
646
         logReplication.info("ReplicationHandler.handleSingleDataFile - Couldn't open the data file: " + accNumber);
647
         throw new HandlerException("ReplicationHandler.handleSingleDataFile - Couldn't open the data file: " + accNumber);
648
      }//else
649

    
650
    }//try
651
    catch(Exception e)
652
    {
653
      /*MetacatReplication.replErrorLog("Failed to try wrote data file " + accNumber +
654
                                      " because " +e.getMessage());*/
655
      if (tableName.equals(DocumentImpl.DOCUMENTTABLE))
656
      {
657
    	logMetacat.error("ReplicationHandler.handleSingleDataFile - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
658
    	logReplication.error("ReplicationHandler.handleSingleDataFile - " + DOCERRORNUMBER + " Failed to write data file " + accNumber +
659
                                     " into " + tableName + " from " +
660
                                         remoteserver + " because " + e.getMessage());
661
        DOCERRORNUMBER++;
662
      }
663
      else
664
      {
665
    	  logMetacat.error("ReplicationHandler.handleSingleDataFile - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
666
    	  logReplication.error("ReplicationHandler.handleSingleDataFile - " + REVERRORNUMBER + " Failed to write data file" + accNumber +
667
                  " into " + tableName + " from " +
668
                      remoteserver +" because "+ e.getMessage());
669
          REVERRORNUMBER++;
670
      }
671
      logMetacat.error("ReplicationHandler.handleSingleDataFile - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
672
      logReplication.error("ReplicationHandler.handleSingleDataFile - Failed to try wrote datafile " + accNumber +
673
                                      " because " + e.getMessage());
674
      throw new HandlerException("ReplicationHandler.handleSingleDataFile - generic exception " 
675
    		  + "writing Replication: " + e.getMessage());
676
    }
677
    finally
678
    {
679
       //return DBConnection
680
       DBConnectionPool.returnDBConnection(dbConn, serialNumber);
681
    }//finally
682
    logD1.info("replication.create localId:" + accNumber);
683
  }
684

    
685

    
686

    
687
  /* Handle delete single document*/
688
  private void handleDeleteSingleDocument(String docId, String notifyServer)
689
               throws HandlerException
690
  {
691
    logReplication.info("ReplicationHandler.handleDeleteSingleDocument - Try delete doc: "+docId);
692
    DBConnection dbConn = null;
693
    int serialNumber = -1;
694
    try
695
    {
696
      // Get DBConnection from pool
697
      dbConn=DBConnectionPool.
698
                  getDBConnection("ReplicationHandler.handleDeleteSingleDoc");
699
      serialNumber=dbConn.getCheckOutSerialNumber();
700
      if(!alreadyDeleted(docId))
701
      {
702

    
703
         //because delete method docid should have rev number
704
         //so we just add one for it. This rev number is no sence.
705
         String accnum=docId+PropertyService.getProperty("document.accNumSeparator")+"1";
706
         DocumentImpl.delete(accnum, null, null, notifyServer);
707
         logReplication.info("ReplicationHandler.handleDeleteSingleDocument - Successfully deleted doc " + docId);
708
         logReplication.info("ReplicationHandler.handleDeleteSingleDocument - Doc " + docId + " deleted");
709
         URL u = new URL("https://"+notifyServer);
710
         String ip = getIpFromURL(u);
711
         EventLog.getInstance().log(ip, null, ReplicationService.REPLICATIONUSER, docId, "delete");
712
      }
713

    
714
    }//try
715
    catch(McdbDocNotFoundException e)
716
    {
717
      logMetacat.error("ReplicationHandler.handleDeleteSingleDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
718
      logReplication.error("ReplicationHandler.handleDeleteSingleDocument - Failed to delete doc " + docId +
719
                                 " in db because because " + e.getMessage());
720
      throw new HandlerException("ReplicationHandler.handleDeleteSingleDocument - generic exception " 
721
    		  + "when handling document: " + e.getMessage());
722
    }
723
    catch(InsufficientKarmaException e)
724
    {
725
      logMetacat.error("ReplicationHandler.handleDeleteSingleDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
726
      logReplication.error("ReplicationHandler.handleDeleteSingleDocument - Failed to delete doc " + docId +
727
                                 " in db because because " + e.getMessage());
728
      throw new HandlerException("ReplicationHandler.handleDeleteSingleDocument - generic exception " 
729
    		  + "when handling document: " + e.getMessage());
730
    }
731
    catch(SQLException e)
732
    {
733
      logMetacat.error("ReplicationHandler.handleDeleteSingleDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
734
      logReplication.error("ReplicationHandler.handleDeleteSingleDocument - Failed to delete doc " + docId +
735
                                 " in db because because " + e.getMessage());
736
      throw new HandlerException("ReplicationHandler.handleDeleteSingleDocument - generic exception " 
737
    		  + "when handling document: " + e.getMessage());
738
    }
739
    catch(Exception e)
740
    {
741
      logMetacat.error("ReplicationHandler.handleDeleteSingleDocument - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
742
      logReplication.error("ReplicationHandler.handleDeleteSingleDocument - Failed to delete doc " + docId +
743
                                 " in db because because " + e.getMessage());
744
      throw new HandlerException("ReplicationHandler.handleDeleteSingleDocument - generic exception " 
745
    		  + "when handling document: " + e.getMessage());
746
    }
747
    finally
748
    {
749
       //return DBConnection
750
       DBConnectionPool.returnDBConnection(dbConn, serialNumber);
751
    }//finally
752
    logD1.info("replication.handleDeleteSingleDocument localId:" + docId);
753
  }
754

    
755
  /* Handle updateLastCheckTimForSingleServer*/
756
  private void updateLastCheckTimeForSingleServer(ReplicationServer repServer)
757
                                                  throws HandlerException
758
  {
759
    String server = repServer.getServerName();
760
    DBConnection dbConn = null;
761
    int serialNumber = -1;
762
    PreparedStatement pstmt = null;
763
    try
764
    {
765
      // Get DBConnection from pool
766
      dbConn=DBConnectionPool.
767
             getDBConnection("ReplicationHandler.updateLastCheckTimeForServer");
768
      serialNumber=dbConn.getCheckOutSerialNumber();
769

    
770
      logReplication.info("ReplicationHandler.updateLastCheckTimeForSingleServer - Try to update last_check for server: "+server);
771
      // Get time from remote server
772
      URL dateurl = new URL("https://" + server + "?server="+
773
      MetacatUtil.getLocalReplicationServerName()+"&action=gettime");
774
      String datexml = ReplicationService.getURLContent(dateurl);
775
      logReplication.info("ReplicationHandler.updateLastCheckTimeForSingleServer - datexml: "+datexml);
776
      if (datexml != null && !datexml.equals("")) {
777
    	  
778
    	  // parse the ISO datetime
779
         String datestr = datexml.substring(11, datexml.indexOf('<', 11));
780
         Calendar updated = DatatypeConverter.parseDateTime(datestr);
781
         
782
         StringBuffer sql = new StringBuffer();
783
         sql.append("update xml_replication set last_checked = ? ");
784
         sql.append(" where server like ? ");
785
         pstmt = dbConn.prepareStatement(sql.toString());
786
         pstmt.setTimestamp(1, new Timestamp(updated.getTimeInMillis()));
787
         pstmt.setString(2, server);
788
         
789
         pstmt.executeUpdate();
790
         dbConn.commit();
791
         pstmt.close();
792
         logReplication.info("ReplicationHandler.updateLastCheckTimeForSingleServer - last_checked updated to "+datestr+" on "
793
                                      + server);
794
      }//if
795
      else
796
      {
797

    
798
         logReplication.info("ReplicationHandler.updateLastCheckTimeForSingleServer - Failed to update last_checked for server "  +
799
                                  server + " in db because couldn't get time "
800
                                  );
801
         throw new Exception("Couldn't get time for server "+ server);
802
      }
803

    
804
    }//try
805
    catch(Exception e)
806
    {
807
      logMetacat.error("ReplicationHandler.updateLastCheckTimeForSingleServer - " + ReplicationService.METACAT_REPL_ERROR_MSG); 
808
      logReplication.error("ReplicationHandler.updateLastCheckTimeForSingleServer - Failed to update last_checked for server " +
809
                                server + " in db because because " + e.getMessage());
810
      throw new HandlerException("ReplicationHandler.updateLastCheckTimeForSingleServer - " 
811
    		  + "Error updating last checked time: " + e.getMessage());
812
    }
813
    finally
814
    {
815
       //return DBConnection
816
       DBConnectionPool.returnDBConnection(dbConn, serialNumber);
817
    }//finally
818
  }
819
  
820
  	/**
821
	 * Handle replicate system metadata
822
	 * 
823
	 * @param remoteserver
824
	 * @param guid
825
	 * @throws HandlerException
826
	 */
827
	private void handleSystemMetadata(String remoteserver, String guid) 
828
		throws HandlerException {
829
		try {
830

    
831
			// Try get the system metadata from remote server
832
			String sysMetaURLStr = "https://" + remoteserver + "?server="
833
					+ MetacatUtil.getLocalReplicationServerName()
834
					+ "&action=getsystemmetadata&guid=" + guid;
835
			sysMetaURLStr = MetacatUtil.replaceWhiteSpaceForURL(sysMetaURLStr);
836
			URL sysMetaUrl = new URL(sysMetaURLStr);
837
			logReplication.info("ReplicationHandler.handleSystemMetadata - Sending message: "
838
							+ sysMetaUrl.toString());
839
			String systemMetadataXML = ReplicationService.getURLContent(sysMetaUrl);
840

    
841
			logReplication.info("ReplicationHandler.handleSystemMetadata - guid in repl: " + guid);
842

    
843
			// process system metadata
844
			if (systemMetadataXML != null) {
845
				SystemMetadata sysMeta = TypeMarshaller.unmarshalTypeFromStream(SystemMetadata.class,
846
								new ByteArrayInputStream(systemMetadataXML
847
										.getBytes("UTF-8")));
848
				HazelcastService.getInstance().getSystemMetadataMap().put(sysMeta.getIdentifier(), sysMeta);
849
			}
850

    
851
			logReplication.info("ReplicationHandler.handleSystemMetadata - Successfully replicated system metadata for guid: "
852
							+ guid);
853

    
854
			String ip = getIpFromURL(sysMetaUrl);
855
			EventLog.getInstance().log(ip, null, ReplicationService.REPLICATIONUSER, guid, "systemMetadata");
856

    
857
		} catch (Exception e) {
858
			logMetacat.error("ReplicationHandler.handleSystemMetadata - "
859
					+ ReplicationService.METACAT_REPL_ERROR_MSG);
860
			logReplication
861
					.error("ReplicationHandler.handleSystemMetadata - Failed to write system metadata "
862
							+ guid + " into db because " + e.getMessage());
863
			throw new HandlerException(
864
					"ReplicationHandler.handleSystemMetadata - generic exception "
865
							+ "writing Replication: " + e.getMessage());
866
		}
867

    
868
	}
869

    
870
  /**
871
   * updates xml_catalog with entries from other servers.
872
   */
873
  private void updateCatalog()
874
  {
875
    logReplication.info("ReplicationHandler.updateCatalog - Start of updateCatalog");
876
    // ReplicationServer object in server list
877
    ReplicationServer replServer = null;
878
    PreparedStatement pstmt = null;
879
    String server = null;
880

    
881

    
882
    // Go through each ReplicationServer object in sererlist
883
    for (int j=0; j<serverList.size(); j++)
884
    {
885
      Vector<Vector<String>> remoteCatalog = new Vector<Vector<String>>();
886
      Vector<String> publicId = new Vector<String>();
887
      try
888
      {
889
        // Get ReplicationServer object from server list
890
        replServer = serverList.serverAt(j);
891
        // Get server name from the ReplicationServer object
892
        server = replServer.getServerName();
893
        // Try to get catalog
894
        URL u = new URL("https://" + server + "?server="+
895
        MetacatUtil.getLocalReplicationServerName()+"&action=getcatalog");
896
        logReplication.info("ReplicationHandler.updateCatalog - sending message " + u.toString());
897
        String catxml = ReplicationService.getURLContent(u);
898

    
899
        // Make sure there are not error, no empty string
900
        if (catxml.indexOf("error")!=-1 || catxml==null||catxml.equals(""))
901
        {
902
          throw new Exception("Couldn't get catalog list form server " +server);
903
        }
904
        logReplication.debug("ReplicationHandler.updateCatalog - catxml: " + catxml);
905
        CatalogMessageHandler cmh = new CatalogMessageHandler();
906
        XMLReader catparser = initParser(cmh);
907
        catparser.parse(new InputSource(new StringReader(catxml)));
908
        //parse the returned catalog xml and put it into a vector
909
        remoteCatalog = cmh.getCatalogVect();
910

    
911
        // Make sure remoteCatalog is not empty
912
        if (remoteCatalog.isEmpty())
913
        {
914
          throw new Exception("Couldn't get catalog list form server " +server);
915
        }
916

    
917
        String localcatxml = ReplicationService.getCatalogXML();
918

    
919
        // Make sure local catalog is no empty
920
        if (localcatxml==null||localcatxml.equals(""))
921
        {
922
          throw new Exception("Couldn't get catalog list form server " +server);
923
        }
924

    
925
        cmh = new CatalogMessageHandler();
926
        catparser = initParser(cmh);
927
        catparser.parse(new InputSource(new StringReader(localcatxml)));
928
        Vector<Vector<String>> localCatalog = cmh.getCatalogVect();
929

    
930
        //now we have the catalog from the remote server and this local server
931
        //we now need to compare the two and merge the differences.
932
        //the comparison is base on the public_id fields which is the 4th
933
        //entry in each row vector.
934
        publicId = new Vector<String>();
935
        for(int i=0; i<localCatalog.size(); i++)
936
        {
937
          Vector<String> v = new Vector<String>(localCatalog.elementAt(i));
938
          logReplication.info("ReplicationHandler.updateCatalog - v1: " + v.toString());
939
          publicId.add(new String((String)v.elementAt(3)));
940
        }
941
      }//try
942
      catch (Exception e)
943
      {
944
        logMetacat.error("ReplicationHandler.updateCatalog - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
945
        logReplication.error("ReplicationHandler.updateCatalog - Failed to update catalog for server "+
946
                                    server + " because " +e.getMessage());
947
      }//catch
948

    
949
      for(int i=0; i<remoteCatalog.size(); i++)
950
      {
951
         // DConnection
952
        DBConnection dbConn = null;
953
        // DBConnection checkout serial number
954
        int serialNumber = -1;
955
        try
956
        {
957
            dbConn=DBConnectionPool.
958
                  getDBConnection("ReplicationHandler.updateCatalog");
959
            serialNumber=dbConn.getCheckOutSerialNumber();
960
            Vector<String> v = remoteCatalog.elementAt(i);
961
            //logMetacat.debug("v2: " + v.toString());
962
            //logMetacat.debug("i: " + i);
963
            //logMetacat.debug("remoteCatalog.size(): " + remoteCatalog.size());
964
            //logMetacat.debug("publicID: " + publicId.toString());
965
            logReplication.info
966
                              ("ReplicationHandler.updateCatalog - v.elementAt(3): " + (String)v.elementAt(3));
967
           if(!publicId.contains(v.elementAt(3)))
968
           { //so we don't have this public id in our local table so we need to
969
             //add it.
970
             //logMetacat.debug("in if");
971
             StringBuffer sql = new StringBuffer();
972
             sql.append("insert into xml_catalog (entry_type, source_doctype, ");
973
             sql.append("target_doctype, public_id, system_id) values (?,?,?,");
974
             sql.append("?,?)");
975
             //logMetacat.debug("sql: " + sql.toString());
976
             pstmt = dbConn.prepareStatement(sql.toString());
977
             pstmt.setString(1, (String)v.elementAt(0));
978
             pstmt.setString(2, (String)v.elementAt(1));
979
             pstmt.setString(3, (String)v.elementAt(2));
980
             pstmt.setString(4, (String)v.elementAt(3));
981
             pstmt.setString(5, (String)v.elementAt(4));
982
             pstmt.execute();
983
             pstmt.close();
984
             logReplication.info("ReplicationHandler.updateCatalog - Success fully to insert new publicid "+
985
                               (String)v.elementAt(3) + " from server"+server);
986
           }
987
        }
988
        catch(Exception e)
989
        {
990
           logMetacat.error("ReplicationHandler.updateCatalog - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
991
           logReplication.error("ReplicationHandler.updateCatalog - Failed to update catalog for server "+
992
                                    server + " because " +e.getMessage());
993
        }//catch
994
        finally
995
        {
996
           DBConnectionPool.returnDBConnection(dbConn, serialNumber);
997
        }//finally
998
      }//for remote catalog
999
    }//for server list
1000
    logReplication.info("End of updateCatalog");
1001
  }
1002

    
1003
  /**
1004
   * Method that returns true if docid has already been "deleted" from metacat.
1005
   * This method really implements a truth table for deleted documents
1006
   * The table is (a docid in one of the tables is represented by the X):
1007
   * xml_docs      xml_revs      deleted?
1008
   * ------------------------------------
1009
   *   X             X             FALSE
1010
   *   X             _             FALSE
1011
   *   _             X             TRUE
1012
   *   _             _             TRUE
1013
   */
1014
  private static boolean alreadyDeleted(String docid) throws HandlerException
1015
  {
1016
    DBConnection dbConn = null;
1017
    int serialNumber = -1;
1018
    PreparedStatement pstmt = null;
1019
    try
1020
    {
1021
      dbConn=DBConnectionPool.
1022
                  getDBConnection("ReplicationHandler.alreadyDeleted");
1023
      serialNumber=dbConn.getCheckOutSerialNumber();
1024
      boolean xml_docs = false;
1025
      boolean xml_revs = false;
1026

    
1027
      StringBuffer sb = new StringBuffer();
1028
      sb.append("select docid from xml_revisions where docid like ? ");
1029
      pstmt = dbConn.prepareStatement(sb.toString());
1030
      pstmt.setString(1, docid);
1031
      pstmt.execute();
1032
      ResultSet rs = pstmt.getResultSet();
1033
      boolean tablehasrows = rs.next();
1034
      if(tablehasrows)
1035
      {
1036
        xml_revs = true;
1037
      }
1038

    
1039
      sb = new StringBuffer();
1040
      sb.append("select docid from xml_documents where docid like '");
1041
      sb.append(docid).append("'");
1042
      pstmt.close();
1043
      pstmt = dbConn.prepareStatement(sb.toString());
1044
      //increase usage count
1045
      dbConn.increaseUsageCount(1);
1046
      pstmt.execute();
1047
      rs = pstmt.getResultSet();
1048
      tablehasrows = rs.next();
1049
      pstmt.close();
1050
      if(tablehasrows)
1051
      {
1052
        xml_docs = true;
1053
      }
1054

    
1055
      if(xml_docs && xml_revs)
1056
      {
1057
        return false;
1058
      }
1059
      else if(xml_docs && !xml_revs)
1060
      {
1061
        return false;
1062
      }
1063
      else if(!xml_docs && xml_revs)
1064
      {
1065
        return true;
1066
      }
1067
      else if(!xml_docs && !xml_revs)
1068
      {
1069
        return true;
1070
      }
1071
    }
1072
    catch(Exception e)
1073
    {
1074
      logMetacat.error("ReplicationHandler.alreadyDeleted - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1075
      logReplication.error("ReplicationHandler.alreadyDeleted - general error in alreadyDeleted: " +
1076
                          e.getMessage());
1077
      throw new HandlerException("ReplicationHandler.alreadyDeleted - general error: " 
1078
    		  + e.getMessage());
1079
    }
1080
    finally
1081
    {
1082
      try
1083
      {
1084
        pstmt.close();
1085
      }//try
1086
      catch (SQLException ee)
1087
      {
1088
    	logMetacat.error("ReplicationHandler.alreadyDeleted - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1089
        logReplication.error("ReplicationHandler.alreadyDeleted - Error in replicationHandler.alreadyDeleted "+
1090
                          "to close pstmt: "+ee.getMessage());
1091
        throw new HandlerException("ReplicationHandler.alreadyDeleted - SQL error when closing prepared statement: " 
1092
      		  + ee.getMessage());
1093
      }//catch
1094
      finally
1095
      {
1096
        DBConnectionPool.returnDBConnection(dbConn, serialNumber);
1097
      }//finally
1098
    }//finally
1099
    return false;
1100
  }
1101

    
1102

    
1103
  /**
1104
   * Method to initialize the message parser
1105
   */
1106
  public static XMLReader initParser(DefaultHandler dh)
1107
          throws HandlerException
1108
  {
1109
    XMLReader parser = null;
1110

    
1111
    try {
1112
      ContentHandler chandler = dh;
1113

    
1114
      // Get an instance of the parser
1115
      String parserName = PropertyService.getProperty("xml.saxparser");
1116
      parser = XMLReaderFactory.createXMLReader(parserName);
1117

    
1118
      // Turn off validation
1119
      parser.setFeature("http://xml.org/sax/features/validation", false);
1120

    
1121
      parser.setContentHandler((ContentHandler)chandler);
1122
      parser.setErrorHandler((ErrorHandler)chandler);
1123

    
1124
    } catch (SAXException se) {
1125
      throw new HandlerException("ReplicationHandler.initParser - Sax error when " 
1126
    		  + " initializing parser: " + se.getMessage());
1127
    } catch (PropertyNotFoundException pnfe) {
1128
        throw new HandlerException("ReplicationHandler.initParser - Property error when " 
1129
      		  + " getting parser name: " + pnfe.getMessage());
1130
    } 
1131

    
1132
    return parser;
1133
  }
1134

    
1135
  /**
1136
	 * This method will combine given time string(in short format) to current
1137
	 * date. If the given time (e.g 10:00 AM) passed the current time (e.g 2:00
1138
	 * PM Aug 21, 2005), then the time will set to second day, 10:00 AM Aug 22,
1139
	 * 2005. If the given time (e.g 10:00 AM) haven't passed the current time
1140
	 * (e.g 8:00 AM Aug 21, 2005) The time will set to be 10:00 AM Aug 21, 2005.
1141
	 * 
1142
	 * @param givenTime
1143
	 *            the format should be "10:00 AM " or "2:00 PM"
1144
	 * @return
1145
	 * @throws Exception
1146
	 */
1147
	public static Date combinateCurrentDateAndGivenTime(String givenTime) throws HandlerException
1148
  {
1149
	  try {
1150
     Date givenDate = parseTime(givenTime);
1151
     Date newDate = null;
1152
     Date now = new Date();
1153
     String currentTimeString = getTimeString(now);
1154
     Date currentTime = parseTime(currentTimeString); 
1155
     if ( currentTime.getTime() >= givenDate.getTime())
1156
     {
1157
        logReplication.info("ReplicationHandler.combinateCurrentDateAndGivenTime - Today already pass the given time, we should set it as tomorrow");
1158
        String dateAndTime = getDateString(now) + " " + givenTime;
1159
        Date combinationDate = parseDateTime(dateAndTime);
1160
        // new date should plus 24 hours to make is the second day
1161
        newDate = new Date(combinationDate.getTime()+24*3600*1000);
1162
     }
1163
     else
1164
     {
1165
         logReplication.info("ReplicationHandler.combinateCurrentDateAndGivenTime - Today haven't pass the given time, we should it as today");
1166
         String dateAndTime = getDateString(now) + " " + givenTime;
1167
         newDate = parseDateTime(dateAndTime);
1168
     }
1169
     logReplication.warn("ReplicationHandler.combinateCurrentDateAndGivenTime - final setting time is "+ newDate.toString());
1170
     return newDate;
1171
	  } catch (ParseException pe) {
1172
		  throw new HandlerException("ReplicationHandler.combinateCurrentDateAndGivenTime - "
1173
				  + "parsing error: "  + pe.getMessage());
1174
	  }
1175
  }
1176

    
1177
  /*
1178
	 * parse a given string to Time in short format. For example, given time is
1179
	 * 10:00 AM, the date will be return as Jan 1 1970, 10:00 AM
1180
	 */
1181
  private static Date parseTime(String timeString) throws ParseException
1182
  {
1183
    DateFormat format = DateFormat.getTimeInstance(DateFormat.SHORT);
1184
    Date time = format.parse(timeString); 
1185
    logReplication.info("ReplicationHandler.parseTime - Date string is after parse a time string "
1186
                              +time.toString());
1187
    return time;
1188

    
1189
  }
1190
  
1191
  /*
1192
   * Parse a given string to date and time. Date format is long and time
1193
   * format is short.
1194
   */
1195
  private static Date parseDateTime(String timeString) throws ParseException
1196
  {
1197
    DateFormat format = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.SHORT);
1198
    Date time = format.parse(timeString);
1199
    logReplication.info("ReplicationHandler.parseDateTime - Date string is after parse a time string "+
1200
                             time.toString());
1201
    return time;
1202
  }
1203
  
1204
  /*
1205
   * Get a date string from a Date object. The date format will be long
1206
   */
1207
  private static String getDateString(Date now)
1208
  {
1209
     DateFormat df = DateFormat.getDateInstance(DateFormat.LONG);
1210
     String s = df.format(now);
1211
     logReplication.info("ReplicationHandler.getDateString - Today is " + s);
1212
     return s;
1213
  }
1214
  
1215
  /*
1216
   * Get a time string from a Date object, the time format will be short
1217
   */
1218
  private static String getTimeString(Date now)
1219
  {
1220
     DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT);
1221
     String s = df.format(now);
1222
     logReplication.info("ReplicationHandler.getTimeString - Time is " + s);
1223
     return s;
1224
  }
1225
  
1226
  
1227
  /*
1228
	 * This method will go through the docid list both in xml_Documents table
1229
	 * and in xml_revisions table @author tao
1230
	 */
1231
	private void handleDocList(Vector<Vector<String>> docList, String tableName) {
1232
		boolean dataFile = false;
1233
		for (int j = 0; j < docList.size(); j++) {
1234
			// initial dataFile is false
1235
			dataFile = false;
1236
			// w is information for one document, information contain
1237
			// docid, rev, server or datafile.
1238
			Vector<String> w = new Vector<String>(docList.elementAt(j));
1239
			// Check if the vector w contain "datafile"
1240
			// If it has, this document is data file
1241
			try {
1242
				if (w.contains((String) PropertyService.getProperty("replication.datafileflag"))) {
1243
					dataFile = true;
1244
				}
1245
			} catch (PropertyNotFoundException pnfe) {
1246
				logMetacat.error("ReplicationHandler.handleDocList - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1247
				logReplication.error("ReplicationHandler.handleDocList - Could not retrieve data file flag property.  "
1248
						+ "Leaving as false: " + pnfe.getMessage());
1249
			}
1250
			// logMetacat.debug("w: " + w.toString());
1251
			// Get docid
1252
			String docid = (String) w.elementAt(0);
1253
			logReplication.info("docid: " + docid);
1254
			// Get revision number
1255
			int rev = Integer.parseInt((String) w.elementAt(1));
1256
			logReplication.info("rev: " + rev);
1257
			// Get remote server name (it is may not be doc home server because
1258
			// the new hub feature
1259
			String remoteServer = (String) w.elementAt(2);
1260
			remoteServer = remoteServer.trim();
1261

    
1262
			try {
1263
				if (tableName.equals(DocumentImpl.DOCUMENTTABLE)) {
1264
					handleDocInXMLDocuments(docid, rev, remoteServer, dataFile);
1265
				} else if (tableName.equals(DocumentImpl.REVISIONTABLE)) {
1266
					handleDocInXMLRevisions(docid, rev, remoteServer, dataFile);
1267
				} else {
1268
					continue;
1269
				}
1270

    
1271
			} catch (Exception e) {
1272
				logMetacat.error("ReplicationHandler.handleDocList - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1273
				logReplication.error("ReplicationHandler.handleDocList - error to handle update doc in " + tableName
1274
						+ " in time replication" + e.getMessage());
1275
				continue;
1276
			}
1277
			
1278
	        if (_xmlDocQueryCount > 0 && (_xmlDocQueryCount % 100) == 0) {
1279
	        	logMetacat.debug("ReplicationHandler.update - xml_doc query count: " + _xmlDocQueryCount + 
1280
	        			", xml_doc avg query time: " + (_xmlDocQueryTime / _xmlDocQueryCount));
1281
	        }
1282
	        
1283
	        if (_xmlRevQueryCount > 0 && (_xmlRevQueryCount % 100) == 0) {
1284
	        	logMetacat.debug("ReplicationHandler.update - xml_rev query count: " + _xmlRevQueryCount + 
1285
	        			", xml_rev avg query time: " + (_xmlRevQueryTime / _xmlRevQueryCount));
1286
	        }
1287

    
1288
		}// for update docs
1289

    
1290
	}
1291
   
1292
   /*
1293
	 * This method will handle doc in xml_documents table.
1294
	 */
1295
   private void handleDocInXMLDocuments(String docid, int rev, String remoteServer, boolean dataFile) 
1296
                                        throws HandlerException
1297
   {
1298
       // compare the update rev and local rev to see what need happen
1299
       int localrev = -1;
1300
       String action = null;
1301
       boolean flag = false;
1302
       try
1303
       {
1304
    	 long docQueryStartTime = System.currentTimeMillis();
1305
         localrev = DBUtil.getLatestRevisionInDocumentTable(docid);
1306
         long docQueryEndTime = System.currentTimeMillis();
1307
         _xmlDocQueryTime += (docQueryEndTime - docQueryStartTime);
1308
         _xmlDocQueryCount++;
1309
       }
1310
       catch (SQLException e)
1311
       {
1312
    	 logMetacat.error("ReplicationHandler.handleDocInXMLDocuments - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1313
         logReplication.error("ReplicationHandler.handleDocInXMLDocuments - Local rev for docid "+ docid + " could not "+
1314
                                " be found because " + e.getMessage());
1315
         logReplication.error("ReplicationHandler.handleDocInXMLDocuments - " + DOCERRORNUMBER+"Docid "+ docid + " could not be "+
1316
                 "written because error happend to find it's local revision");
1317
         DOCERRORNUMBER++;
1318
         throw new HandlerException ("ReplicationHandler.handleDocInXMLDocuments - Local rev for docid "+ docid + " could not "+
1319
                 " be found: " + e.getMessage());
1320
       }
1321
       logReplication.info("ReplicationHandler.handleDocInXMLDocuments - Local rev for docid "+ docid + " is "+
1322
                               localrev);
1323

    
1324
       //check the revs for an update because this document is in the
1325
       //local DB, it might be out of date.
1326
       if (localrev == -1)
1327
       {
1328
          // check if the revision is in the revision table
1329
    	   Vector<Integer> localRevVector = null;
1330
    	 try {
1331
        	 long revQueryStartTime = System.currentTimeMillis();
1332
    		 localRevVector = DBUtil.getRevListFromRevisionTable(docid);
1333
             long revQueryEndTime = System.currentTimeMillis();
1334
             _xmlRevQueryTime += (revQueryEndTime - revQueryStartTime);
1335
             _xmlRevQueryCount++;
1336
    	 } catch (SQLException sqle) {
1337
    		 throw new HandlerException("ReplicationHandler.handleDocInXMLDocuments - SQL error " 
1338
    				 + " when getting rev list for docid: " + docid + " : " + sqle.getMessage());
1339
    	 }
1340
         if (localRevVector != null && localRevVector.contains(new Integer(rev)))
1341
         {
1342
             // this version was deleted, so don't need replicate
1343
             flag = false;
1344
         }
1345
         else
1346
         {
1347
           //insert this document as new because it is not in the local DB
1348
           action = "INSERT";
1349
           flag = true;
1350
         }
1351
       }
1352
       else
1353
       {
1354
         if(localrev == rev)
1355
         {
1356
           // Local meatacat has the same rev to remote host, don't need
1357
           // update and flag set false
1358
           flag = false;
1359
         }
1360
         else if(localrev < rev)
1361
         {
1362
           //this document needs to be updated so send an read request
1363
           action = "UPDATE";
1364
           flag = true;
1365
         }
1366
       }
1367
       
1368
       String accNumber = null;
1369
       try {
1370
    	   accNumber = docid + PropertyService.getProperty("document.accNumSeparator") + rev;
1371
       } catch (PropertyNotFoundException pnfe) {
1372
    	   throw new HandlerException("ReplicationHandler.handleDocInXMLDocuments - error getting " 
1373
    			   + "account number separator : " + pnfe.getMessage());
1374
       }
1375
       // this is non-data file
1376
       if(flag && !dataFile)
1377
       {
1378
         try
1379
         {
1380
           handleSingleXMLDocument(remoteServer, action, accNumber, DocumentImpl.DOCUMENTTABLE);
1381
         }
1382
         catch(HandlerException he)
1383
         {
1384
           // skip this document
1385
           throw he;
1386
         }
1387
       }//if for non-data file
1388

    
1389
        // this is for data file
1390
       if(flag && dataFile)
1391
       {
1392
         try
1393
         {
1394
           handleSingleDataFile(remoteServer, action, accNumber, DocumentImpl.DOCUMENTTABLE);
1395
         }
1396
         catch(HandlerException he)
1397
         {
1398
           // skip this data file
1399
           throw he;
1400
         }
1401

    
1402
       }//for data file
1403
   }
1404
   
1405
   /*
1406
    * This method will handle doc in xml_documents table.
1407
    */
1408
   private void handleDocInXMLRevisions(String docid, int rev, String remoteServer, boolean dataFile) 
1409
                                        throws HandlerException
1410
   {
1411
       // compare the update rev and local rev to see what need happen
1412
       logReplication.info("ReplicationHandler.handleDocInXMLRevisions - In handle repliation revsion table");
1413
       logReplication.info("ReplicationHandler.handleDocInXMLRevisions - the docid is "+ docid);
1414
       logReplication.info("ReplicationHandler.handleDocInXMLRevisions - The rev is "+rev);
1415
       Vector<Integer> localrev = null;
1416
       String action = "INSERT";
1417
       boolean flag = false;
1418
       try
1419
       {
1420
      	 long revQueryStartTime = System.currentTimeMillis();
1421
         localrev = DBUtil.getRevListFromRevisionTable(docid);
1422
         long revQueryEndTime = System.currentTimeMillis();
1423
         _xmlRevQueryTime += (revQueryEndTime - revQueryStartTime);
1424
         _xmlRevQueryCount++;
1425
       }
1426
       catch (SQLException sqle)
1427
       {
1428
    	 logMetacat.error("ReplicationHandler.handleDocInXMLDocuments - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1429
         logReplication.error("ReplicationHandler.handleDocInXMLRevisions - Local rev for docid "+ docid + " could not "+
1430
                                " be found because " + sqle.getMessage());
1431
         REVERRORNUMBER++;
1432
         throw new HandlerException ("ReplicationHandler.handleDocInXMLRevisions - SQL exception getting rev list: " 
1433
        		 + sqle.getMessage());
1434
       }
1435
       logReplication.info("ReplicationHandler.handleDocInXMLRevisions - rev list in xml_revision table for docid "+ docid + " is "+
1436
                               localrev.toString());
1437
       
1438
       // if the rev is not in the xml_revision, we need insert it
1439
       if (!localrev.contains(new Integer(rev)))
1440
       {
1441
           flag = true;    
1442
       }
1443
     
1444
       String accNumber = null;
1445
       try {
1446
    	   accNumber = docid + PropertyService.getProperty("document.accNumSeparator") + rev;
1447
       } catch (PropertyNotFoundException pnfe) {
1448
    	   throw new HandlerException("ReplicationHandler.handleDocInXMLRevisions - error getting " 
1449
    			   + "account number separator : " + pnfe.getMessage());
1450
       }
1451
       // this is non-data file
1452
       if(flag && !dataFile)
1453
       {
1454
         try
1455
         {
1456
           
1457
           handleSingleXMLDocument(remoteServer, action, accNumber, DocumentImpl.REVISIONTABLE);
1458
         }
1459
         catch(HandlerException he)
1460
         {
1461
           // skip this document
1462
           throw he;
1463
         }
1464
       }//if for non-data file
1465

    
1466
        // this is for data file
1467
       if(flag && dataFile)
1468
       {
1469
         try
1470
         {
1471
           handleSingleDataFile(remoteServer, action, accNumber, DocumentImpl.REVISIONTABLE);
1472
         }
1473
         catch(HandlerException he)
1474
         {
1475
           // skip this data file
1476
           throw he;
1477
         }
1478

    
1479
       }//for data file
1480
   }
1481
   
1482
   /*
1483
    * Return a ip address for given url
1484
    */
1485
   private String getIpFromURL(URL url)
1486
   {
1487
	   String ip = null;
1488
	   try
1489
	   {
1490
	      InetAddress address = InetAddress.getByName(url.getHost());
1491
	      ip = address.getHostAddress();
1492
	   }
1493
	   catch(UnknownHostException e)
1494
	   {
1495
		   logMetacat.error("ReplicationHandler.getIpFromURL - " + ReplicationService.METACAT_REPL_ERROR_MSG);                         
1496
		   logReplication.error("ReplicationHandler.getIpFromURL - Error in get ip address for host: "
1497
                   +e.getMessage());
1498
	   }
1499

    
1500
	   return ip;
1501
   }
1502
  
1503
}
1504

    
(4-4/8)