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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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* Release: @release@
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*
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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669
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jones
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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;
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import edu.ucsb.nceas.dbadapter.AbstractDatabase;
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import java.sql.*;
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import java.util.*;
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import java.lang.Thread;
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import java.io.*;
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import java.net.*;
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import java.text.*;
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import org.xml.sax.AttributeList;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.DTDHandler;
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import org.xml.sax.EntityResolver;
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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.XMLReader;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXParseException;
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import org.xml.sax.helpers.XMLReaderFactory;
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import org.xml.sax.helpers.DefaultHandler;
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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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MetaCatUtil util = new MetaCatUtil();
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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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public ReplicationHandler(PrintWriter o)
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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(PrintWriter o, 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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try
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{
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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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}//try
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catch (Exception e)
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{
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MetaCatUtil.debugMessage("Error in replicationHandler.run():"
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+e.getMessage(), 30);
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e.printStackTrace();
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}//catch
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}
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/**
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* Method that uses revision taging 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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/*
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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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ReplMessageHandler message = new ReplMessageHandler();
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Vector responses = new Vector();
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boolean flag=false; // If a document need to update
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boolean dataFile=false;
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String action = new String();
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XMLReader parser;
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URL u;
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try
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{
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parser = initParser(message);
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}
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catch (Exception e)
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{
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MetacatReplication.replErrorLog("Failed to replicate becaue couldn't "+
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" initParser for message and" +e.getMessage());
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MetaCatUtil.debugMessage("Failed to replicate becaue couldn't " +
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" initParser for message and " +e.getMessage(), 30);
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// stop replication
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return;
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}
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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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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();
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String result = null;
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MetacatReplication.replLog("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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{
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u = new URL("https://" + server + "?server="
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+util.getLocalReplicationServerName()+"&action=update");
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MetaCatUtil.debugMessage("Sending infomation " +u.toString(), 50);
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result = MetacatReplication.getURLContent(u);
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}
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catch (Exception e)
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{
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MetacatReplication.replErrorLog("Failed to get updated doc list "+
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"for server " + server + " because "+e.getMessage());
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MetaCatUtil.debugMessage( "Failed to get updated doc list "+
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"for server " + server + " because "+e.getMessage(), 30);
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continue;
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}
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MetaCatUtil.debugMessage("docid: "+server+" "+result, 50);
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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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MetacatReplication.replErrorLog("Failed to get updated doc list "+
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"for server " + server + " because "+result);
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MetaCatUtil.debugMessage( "Failed to get updated doc list "+
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"for server " + server + " because "+result, 30);
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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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//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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MetacatReplication.replErrorLog("No updated doc list for "+
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"every server and failed to replicate");
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MetaCatUtil.debugMessage( "No updated doc list for "+
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"every server and failed to replicate", 30);
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return;
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}
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MetaCatUtil.debugMessage("Responses from remote metacat about updated "+
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"document information: "+ responses.toString(), 35);
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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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try
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{
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| 211 |
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parser.parse(new InputSource(
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new StringReader(
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(String)(responses.elementAt(i)))));
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}
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catch(Exception e)
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{
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| 217 |
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MetacatReplication.replErrorLog("Couldn't parse one responses "+
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"because "+ e.getMessage());
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MetaCatUtil.debugMessage("Couldn't parse one responses "+
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"because "+ e.getMessage(), 30);
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continue;
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}
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| 223 |
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//v is the list of updated documents
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Vector updateList = new Vector(message.getUpdatesVect());
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//System.out.println("v: " + v.toString());
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| 226 |
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//d is the list of deleted documents
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Vector deleteList = new Vector(message.getDeletesVect());
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//System.out.println("d: " + d.toString());
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MetaCatUtil.debugMessage("Update vector size: "+ updateList.size(), 40);
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MetaCatUtil.debugMessage("Delete vector size: "+ deleteList.size(),40);
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// go though every element in updated document vector
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for(int j=0; j<updateList.size(); j++)
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{
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| 234 |
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//initial dataFile is false
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dataFile=false;
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//w is information for one document, information contain
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//docid, rev, server or datafile.
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Vector w = new Vector((Vector)(updateList.elementAt(j)));
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| 239 |
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//Check if the vector w contain "datafile"
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//If it has, this document is data file
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if (w.contains((String)util.getOption("datafileflag")))
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| 242 |
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{
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| 243 |
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dataFile=true;
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| 244 |
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}
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| 245 |
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//System.out.println("w: " + w.toString());
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| 246 |
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// Get docid
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String docid = (String)w.elementAt(0);
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| 248 |
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MetaCatUtil.debugMessage("docid: " + docid, 40);
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| 249 |
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// Get revision number
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int rev = Integer.parseInt((String)w.elementAt(1));
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| 251 |
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MetaCatUtil.debugMessage("rev: " + rev, 40);
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| 252 |
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// Get remote server name (it is may not be doc homeserver because
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// the new hub feature
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| 254 |
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String remoteServer = (String)w.elementAt(2);
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| 255 |
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| 257 |
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// compare the update rev and local rev to see what need happen
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| 258 |
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int localrev = -1;
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| 259 |
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try
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| 260 |
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{
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| 261 |
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localrev = DocumentImpl.getLatestRevisionNumber(docid);
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| 262 |
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}
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| 263 |
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catch (SQLException e)
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| 264 |
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{
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| 265 |
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MetaCatUtil.debugMessage("Local rev for docid "+ docid + " could not "+
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| 266 |
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" be found because " + e.getMessage(), 45);
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| 267 |
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MetacatReplication.replErrorLog("Docid "+ docid + " could not be "+
|
| 268 |
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"written because error happend to find it's local revision");
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| 269 |
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continue;
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| 270 |
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}
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| 271 |
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MetaCatUtil.debugMessage("Local rev for docid "+ docid + " is "+
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| 272 |
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localrev, 45);
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//check the revs for an update because this document is in the
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| 275 |
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//local DB, it might be out of date.
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| 276 |
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if (localrev == -1)
|
| 277 |
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{
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| 278 |
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//insert this document as new because it is not in the local DB
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| 279 |
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action = "INSERT";
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| 280 |
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flag = true;
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| 281 |
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}
|
| 282 |
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else
|
| 283 |
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{
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| 284 |
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if(localrev == rev)
|
| 285 |
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{
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| 286 |
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// Local meatacat has the same rev to remote host, don't need
|
| 287 |
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// update and flag set false
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| 288 |
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flag = false;
|
| 289 |
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}
|
| 290 |
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else if(localrev < rev)
|
| 291 |
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{
|
| 292 |
|
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//this document needs to be updated so send an read request
|
| 293 |
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action = "UPDATE";
|
| 294 |
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flag = true;
|
| 295 |
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}
|
| 296 |
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}
|
| 297 |
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| 298 |
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// this is non-data file
|
| 299 |
|
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if(flag && !dataFile)
|
| 300 |
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{
|
| 301 |
625
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try
|
| 302 |
|
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{
|
| 303 |
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handleSingleXMLDocument(remoteServer, action, docid);
|
| 304 |
625
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}
|
| 305 |
|
|
catch(Exception e)
|
| 306 |
|
|
{
|
| 307 |
1585
|
tao
|
// skip this document
|
| 308 |
|
|
continue;
|
| 309 |
625
|
berkley
|
}
|
| 310 |
1037
|
tao
|
}//if for non-data file
|
| 311 |
2286
|
tao
|
|
| 312 |
1292
|
tao
|
// this is for data file
|
| 313 |
|
|
if(flag && dataFile)
|
| 314 |
2286
|
tao
|
{
|
| 315 |
1037
|
tao
|
try
|
| 316 |
|
|
{
|
| 317 |
1585
|
tao
|
handleSingleDataFile(remoteServer, action, docid);
|
| 318 |
|
|
}
|
| 319 |
1037
|
tao
|
catch(Exception e)
|
| 320 |
|
|
{
|
| 321 |
1585
|
tao
|
// skip this datafile
|
| 322 |
|
|
continue;
|
| 323 |
|
|
}
|
| 324 |
2286
|
tao
|
|
| 325 |
1037
|
tao
|
}//for datafile
|
| 326 |
|
|
}//for update docs
|
| 327 |
2286
|
tao
|
|
| 328 |
1037
|
tao
|
//handle deleted docs
|
| 329 |
1585
|
tao
|
for(int k=0; k<deleteList.size(); k++)
|
| 330 |
577
|
berkley
|
{ //delete the deleted documents;
|
| 331 |
1585
|
tao
|
Vector w = new Vector((Vector)deleteList.elementAt(k));
|
| 332 |
|
|
String docId = (String)w.elementAt(0);
|
| 333 |
|
|
try
|
| 334 |
579
|
berkley
|
{
|
| 335 |
2298
|
tao
|
handleDeleteSingleDocument(docId, server);
|
| 336 |
579
|
berkley
|
}
|
| 337 |
1585
|
tao
|
catch (Exception ee)
|
| 338 |
|
|
{
|
| 339 |
|
|
continue;
|
| 340 |
|
|
}
|
| 341 |
1037
|
tao
|
}//for delete docs
|
| 342 |
1585
|
tao
|
}//for response
|
| 343 |
2286
|
tao
|
|
| 344 |
1585
|
tao
|
//updated last_checked
|
| 345 |
|
|
for (int i=0;i<serverList.size(); i++)
|
| 346 |
|
|
{
|
| 347 |
|
|
// Get ReplicationServer object from server list
|
| 348 |
|
|
replServer = serverList.serverAt(i);
|
| 349 |
|
|
try
|
| 350 |
|
|
{
|
| 351 |
|
|
updateLastCheckTimeForSingleServer(replServer);
|
| 352 |
|
|
}
|
| 353 |
|
|
catch(Exception e)
|
| 354 |
|
|
{
|
| 355 |
|
|
continue;
|
| 356 |
|
|
}
|
| 357 |
|
|
}//for
|
| 358 |
2286
|
tao
|
|
| 359 |
1585
|
tao
|
}//update
|
| 360 |
2286
|
tao
|
|
| 361 |
1585
|
tao
|
/* Handle replicate single xml document*/
|
| 362 |
2286
|
tao
|
private void handleSingleXMLDocument(String remoteserver, String actions,
|
| 363 |
|
|
String docId)
|
| 364 |
1585
|
tao
|
throws Exception
|
| 365 |
|
|
{
|
| 366 |
|
|
DBConnection dbConn = null;
|
| 367 |
|
|
int serialNumber = -1;
|
| 368 |
|
|
try
|
| 369 |
|
|
{
|
| 370 |
|
|
// Get DBConnection from pool
|
| 371 |
|
|
dbConn=DBConnectionPool.
|
| 372 |
|
|
getDBConnection("ReplicationHandler.handleSingleXMLDocument");
|
| 373 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 374 |
|
|
//if the document needs to be updated or inserted, this is executed
|
| 375 |
1600
|
tao
|
String readDocURLString = "https://" + remoteserver + "?server="+
|
| 376 |
|
|
util.getLocalReplicationServerName()+"&action=read&docid="+docId;
|
| 377 |
|
|
readDocURLString = MetaCatUtil.replaceWhiteSpaceForURL(readDocURLString);
|
| 378 |
|
|
URL u = new URL(readDocURLString);
|
| 379 |
2286
|
tao
|
|
| 380 |
1585
|
tao
|
// Get docid content
|
| 381 |
|
|
String newxmldoc = MetacatReplication.getURLContent(u);
|
| 382 |
|
|
// If couldn't get skip it
|
| 383 |
1609
|
tao
|
if ( newxmldoc.indexOf("<error>")!= -1 && newxmldoc.indexOf("</error>")!=-1)
|
| 384 |
1292
|
tao
|
{
|
| 385 |
1585
|
tao
|
throw new Exception(newxmldoc);
|
| 386 |
|
|
}
|
| 387 |
|
|
MetaCatUtil.debugMessage("xml documnet:", 45);
|
| 388 |
|
|
MetaCatUtil.debugMessage(newxmldoc, 45);
|
| 389 |
2286
|
tao
|
|
| 390 |
1585
|
tao
|
// Try get the docid info from remote server
|
| 391 |
|
|
DocInfoHandler dih = new DocInfoHandler();
|
| 392 |
|
|
XMLReader docinfoParser = initParser(dih);
|
| 393 |
2286
|
tao
|
String docInfoURLStr = "https://" + remoteserver +
|
| 394 |
1585
|
tao
|
"?server="+util.getLocalReplicationServerName()+
|
| 395 |
1600
|
tao
|
"&action=getdocumentinfo&docid="+docId;
|
| 396 |
|
|
docInfoURLStr = MetaCatUtil.replaceWhiteSpaceForURL(docInfoURLStr);
|
| 397 |
|
|
URL docinfoUrl = new URL(docInfoURLStr);
|
| 398 |
2286
|
tao
|
MetaCatUtil.debugMessage("Sending message: " +
|
| 399 |
1585
|
tao
|
docinfoUrl.toString(), 45);
|
| 400 |
|
|
String docInfoStr = MetacatReplication.getURLContent(docinfoUrl);
|
| 401 |
|
|
docinfoParser.parse(new InputSource(new StringReader(docInfoStr)));
|
| 402 |
|
|
Hashtable docinfoHash = dih.getDocInfo();
|
| 403 |
|
|
// Get home server of the docid
|
| 404 |
|
|
String docHomeServer = (String)docinfoHash.get("home_server");
|
| 405 |
|
|
MetaCatUtil.debugMessage("doc home server in repl: "+docHomeServer, 45);
|
| 406 |
2286
|
tao
|
|
| 407 |
1585
|
tao
|
//docid should include rev number too
|
| 408 |
|
|
String accnum=docId+util.getOption("accNumSeparator")+
|
| 409 |
|
|
(String)docinfoHash.get("rev");
|
| 410 |
|
|
MetaCatUtil.debugMessage("docid in repl: "+accnum, 45);
|
| 411 |
|
|
String docType = (String)docinfoHash.get("doctype");
|
| 412 |
|
|
MetaCatUtil.debugMessage("doctype in repl: "+docType, 45);
|
| 413 |
2286
|
tao
|
|
| 414 |
1585
|
tao
|
String parserBase = null;
|
| 415 |
|
|
// this for eml2 and we need user eml2 parser
|
| 416 |
2169
|
sgarg
|
if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_0_0NAMESPACE))
|
| 417 |
1585
|
tao
|
{
|
| 418 |
2163
|
tao
|
parserBase = DocumentImpl.EML200;
|
| 419 |
1585
|
tao
|
}
|
| 420 |
2286
|
tao
|
else if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_0_1NAMESPACE))
|
| 421 |
|
|
{
|
| 422 |
|
|
parserBase = DocumentImpl.EML200;
|
| 423 |
|
|
}
|
| 424 |
|
|
else if (docType != null && (docType.trim()).equals(DocumentImpl.EML2_1_0NAMESPACE))
|
| 425 |
|
|
{
|
| 426 |
|
|
parserBase = DocumentImpl.EML210;
|
| 427 |
|
|
}
|
| 428 |
1585
|
tao
|
// Write the document into local host
|
| 429 |
|
|
DocumentImplWrapper wrapper = new DocumentImplWrapper(parserBase, false);
|
| 430 |
2286
|
tao
|
String newDocid = wrapper.writeReplication(dbConn,
|
| 431 |
1585
|
tao
|
new StringReader(newxmldoc),
|
| 432 |
|
|
(String)docinfoHash.get("public_access"),
|
| 433 |
|
|
null, /* the dtd text */
|
| 434 |
2286
|
tao
|
actions,
|
| 435 |
|
|
accnum,
|
| 436 |
1585
|
tao
|
(String)docinfoHash.get("user_owner"),
|
| 437 |
|
|
null, /* null for groups[] */
|
| 438 |
2286
|
tao
|
docHomeServer,
|
| 439 |
1585
|
tao
|
remoteserver);
|
| 440 |
|
|
MetaCatUtil.debugMessage("Successfully replicated doc " + accnum, 35);
|
| 441 |
2286
|
tao
|
MetacatReplication.replLog("wrote doc " + accnum + " from " +
|
| 442 |
1585
|
tao
|
remoteserver);
|
| 443 |
2286
|
tao
|
|
| 444 |
|
|
}//try
|
| 445 |
577
|
berkley
|
catch(Exception e)
|
| 446 |
|
|
{
|
| 447 |
1585
|
tao
|
MetacatReplication.replErrorLog("Failed to write doc " + docId +
|
| 448 |
|
|
" into db because " +e.getMessage());
|
| 449 |
|
|
MetaCatUtil.debugMessage("Failed to write doc " + docId +
|
| 450 |
|
|
" into db because " +e.getMessage(), 30);
|
| 451 |
|
|
throw e;
|
| 452 |
577
|
berkley
|
}
|
| 453 |
667
|
berkley
|
finally
|
| 454 |
|
|
{
|
| 455 |
1585
|
tao
|
//return DBConnection
|
| 456 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 457 |
|
|
}//finally
|
| 458 |
|
|
}
|
| 459 |
2286
|
tao
|
|
| 460 |
|
|
|
| 461 |
|
|
|
| 462 |
1585
|
tao
|
/* Handle replicate single xml document*/
|
| 463 |
2286
|
tao
|
private void handleSingleDataFile(String remoteserver, String actions,
|
| 464 |
|
|
String docId)
|
| 465 |
1585
|
tao
|
throws Exception
|
| 466 |
|
|
{
|
| 467 |
|
|
MetaCatUtil.debugMessage("Try to replicate data file: "+docId, 40);
|
| 468 |
|
|
DBConnection dbConn = null;
|
| 469 |
|
|
int serialNumber = -1;
|
| 470 |
|
|
try
|
| 471 |
|
|
{
|
| 472 |
|
|
// Get DBConnection from pool
|
| 473 |
|
|
dbConn=DBConnectionPool.
|
| 474 |
|
|
getDBConnection("ReplicationHandler.handleSinlgeDataFile");
|
| 475 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 476 |
|
|
// Try get docid info from remote server
|
| 477 |
|
|
DocInfoHandler dih = new DocInfoHandler();
|
| 478 |
|
|
XMLReader docinfoParser = initParser(dih);
|
| 479 |
2286
|
tao
|
String docInfoURLString = "https://" + remoteserver +
|
| 480 |
1585
|
tao
|
"?server="+util.getLocalReplicationServerName()+
|
| 481 |
1600
|
tao
|
"&action=getdocumentinfo&docid="+docId;
|
| 482 |
|
|
docInfoURLString = MetaCatUtil.replaceWhiteSpaceForURL(docInfoURLString);
|
| 483 |
|
|
URL docinfoUrl = new URL(docInfoURLString);
|
| 484 |
2286
|
tao
|
|
| 485 |
1585
|
tao
|
String docInfoStr = MetacatReplication.getURLContent(docinfoUrl);
|
| 486 |
|
|
docinfoParser.parse(new InputSource(new StringReader(docInfoStr)));
|
| 487 |
|
|
Hashtable docinfoHash = dih.getDocInfo();
|
| 488 |
|
|
// Get doicd owner
|
| 489 |
|
|
String user = (String)docinfoHash.get("user_owner");
|
| 490 |
|
|
// Get docid name (such as acl or dataset)
|
| 491 |
|
|
String docName = (String)docinfoHash.get("docname");
|
| 492 |
2286
|
tao
|
// Get doc type (eml public id)
|
| 493 |
1585
|
tao
|
String docType = (String)docinfoHash.get("doctype");
|
| 494 |
|
|
// Get docid home sever. it might be different to remoteserver
|
| 495 |
|
|
// becuause of hub feature
|
| 496 |
|
|
String docHomeServer = (String)docinfoHash.get("home_server");
|
| 497 |
2286
|
tao
|
|
| 498 |
1585
|
tao
|
//docid should include rev number too
|
| 499 |
|
|
String accnum=docId+util.getOption("accNumSeparator")+
|
| 500 |
|
|
(String)docinfoHash.get("rev");
|
| 501 |
2286
|
tao
|
|
| 502 |
|
|
|
| 503 |
1585
|
tao
|
String datafilePath = util.getOption("datafilepath");
|
| 504 |
|
|
// Get data file content
|
| 505 |
1600
|
tao
|
String readDataURLString = "https://" + remoteserver + "?server="+
|
| 506 |
1585
|
tao
|
util.getLocalReplicationServerName()+
|
| 507 |
1600
|
tao
|
"&action=readdata&docid="+accnum;
|
| 508 |
|
|
readDataURLString = MetaCatUtil.replaceWhiteSpaceForURL(readDataURLString);
|
| 509 |
|
|
URL u = new URL(readDataURLString);
|
| 510 |
2286
|
tao
|
InputStream input = u.openStream();
|
| 511 |
1585
|
tao
|
//register data file into xml_documents table and wite data file
|
| 512 |
|
|
//into file system
|
| 513 |
1600
|
tao
|
if ( input != null)
|
| 514 |
667
|
berkley
|
{
|
| 515 |
2286
|
tao
|
DocumentImpl.writeDataFileInReplication(input,
|
| 516 |
|
|
datafilePath,
|
| 517 |
|
|
docName,docType,
|
| 518 |
1585
|
tao
|
accnum, user,
|
| 519 |
|
|
docHomeServer,
|
| 520 |
|
|
remoteserver);
|
| 521 |
2286
|
tao
|
MetaCatUtil.debugMessage("Successfully to write datafile " + docId, 30);
|
| 522 |
|
|
MetacatReplication.replLog("wrote datafile " + accnum + " from " +
|
| 523 |
1585
|
tao
|
remoteserver);
|
| 524 |
|
|
}//if
|
| 525 |
|
|
else
|
| 526 |
1217
|
tao
|
{
|
| 527 |
1600
|
tao
|
MetaCatUtil.debugMessage("Couldn't open the data file: " + accnum, 30);
|
| 528 |
1585
|
tao
|
throw new Exception("Couldn't open the data file: " + accnum);
|
| 529 |
|
|
}//else
|
| 530 |
2286
|
tao
|
|
| 531 |
|
|
}//try
|
| 532 |
1585
|
tao
|
catch(Exception e)
|
| 533 |
|
|
{
|
| 534 |
|
|
MetacatReplication.replErrorLog("Failed to try wrote datafile " + docId +
|
| 535 |
|
|
" because " +e.getMessage());
|
| 536 |
|
|
MetaCatUtil.debugMessage("Failed to try wrote datafile " + docId +
|
| 537 |
|
|
" because " +e.getMessage(), 30);
|
| 538 |
|
|
throw e;
|
| 539 |
|
|
}
|
| 540 |
|
|
finally
|
| 541 |
|
|
{
|
| 542 |
|
|
//return DBConnection
|
| 543 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 544 |
|
|
}//finally
|
| 545 |
|
|
}
|
| 546 |
2286
|
tao
|
|
| 547 |
|
|
|
| 548 |
|
|
|
| 549 |
1585
|
tao
|
/* Handle delete single document*/
|
| 550 |
2298
|
tao
|
private void handleDeleteSingleDocument(String docId, String notifyServer)
|
| 551 |
1585
|
tao
|
throws Exception
|
| 552 |
|
|
{
|
| 553 |
|
|
MetaCatUtil.debugMessage("Try delete doc: "+docId, 40);
|
| 554 |
|
|
DBConnection dbConn = null;
|
| 555 |
|
|
int serialNumber = -1;
|
| 556 |
|
|
try
|
| 557 |
|
|
{
|
| 558 |
|
|
// Get DBConnection from pool
|
| 559 |
|
|
dbConn=DBConnectionPool.
|
| 560 |
|
|
getDBConnection("ReplicationHandler.handleDeleteSingleDoc");
|
| 561 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 562 |
|
|
if(!alreadyDeleted(docId))
|
| 563 |
1217
|
tao
|
{
|
| 564 |
2286
|
tao
|
|
| 565 |
1585
|
tao
|
//because delete method docid should have rev number
|
| 566 |
|
|
//so we just add one for it. This rev number is no sence.
|
| 567 |
|
|
String accnum=docId+util.getOption("accNumSeparator")+"1";
|
| 568 |
|
|
//System.out.println("accnum: "+accnum);
|
| 569 |
2298
|
tao
|
DocumentImpl.delete(accnum, null, null, notifyServer);
|
| 570 |
2286
|
tao
|
MetaCatUtil.debugMessage("Successfully deleted doc " + docId, 30);
|
| 571 |
1585
|
tao
|
MetacatReplication.replLog("Doc " + docId + " deleted");
|
| 572 |
|
|
}
|
| 573 |
2286
|
tao
|
|
| 574 |
|
|
}//try
|
| 575 |
1585
|
tao
|
catch(Exception e)
|
| 576 |
|
|
{
|
| 577 |
|
|
MetacatReplication.replErrorLog("Failed to delete doc " + docId +
|
| 578 |
|
|
" in db because " +e.getMessage());
|
| 579 |
|
|
MetaCatUtil.debugMessage("Failed to delete doc " + docId +
|
| 580 |
|
|
" in db because because " +e.getMessage(), 30);
|
| 581 |
|
|
throw e;
|
| 582 |
|
|
}
|
| 583 |
|
|
finally
|
| 584 |
|
|
{
|
| 585 |
|
|
//return DBConnection
|
| 586 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 587 |
1037
|
tao
|
}//finally
|
| 588 |
1585
|
tao
|
}
|
| 589 |
2286
|
tao
|
|
| 590 |
1585
|
tao
|
/* Handle updateLastCheckTimForSingleServer*/
|
| 591 |
2286
|
tao
|
private void updateLastCheckTimeForSingleServer(ReplicationServer repServer)
|
| 592 |
1585
|
tao
|
throws Exception
|
| 593 |
590
|
berkley
|
{
|
| 594 |
1585
|
tao
|
String server = repServer.getServerName();
|
| 595 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 596 |
|
|
int serialNumber = -1;
|
| 597 |
|
|
PreparedStatement pstmt = null;
|
| 598 |
590
|
berkley
|
try
|
| 599 |
|
|
{
|
| 600 |
1585
|
tao
|
// Get DBConnection from pool
|
| 601 |
1217
|
tao
|
dbConn=DBConnectionPool.
|
| 602 |
1585
|
tao
|
getDBConnection("ReplicationHandler.updateLastCheckTimeForServer");
|
| 603 |
1217
|
tao
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 604 |
2286
|
tao
|
|
| 605 |
1585
|
tao
|
MetaCatUtil.debugMessage("Try to update last_check for server: "+server, 40);
|
| 606 |
|
|
// Get time from remote server
|
| 607 |
|
|
URL dateurl = new URL("https://" + server + "?server="+
|
| 608 |
|
|
util.getLocalReplicationServerName()+"&action=gettime");
|
| 609 |
|
|
String datexml = MetacatReplication.getURLContent(dateurl);
|
| 610 |
|
|
MetaCatUtil.debugMessage("datexml: "+datexml, 45);
|
| 611 |
|
|
if (datexml!=null && !datexml.equals(""))
|
| 612 |
|
|
{
|
| 613 |
|
|
String datestr = datexml.substring(11, datexml.indexOf('<', 11));
|
| 614 |
|
|
StringBuffer sql = new StringBuffer();
|
| 615 |
1751
|
tao
|
/*sql.append("update xml_replication set last_checked = to_date('");
|
| 616 |
1585
|
tao
|
sql.append(datestr).append("', 'YY-MM-DD HH24:MI:SS') where ");
|
| 617 |
1751
|
tao
|
sql.append("server like '").append(server).append("'");*/
|
| 618 |
|
|
sql.append("update xml_replication set last_checked = ");
|
| 619 |
1753
|
tao
|
sql.append(dbAdapter.toDate(datestr, "MM/DD/YY HH24:MI:SS"));
|
| 620 |
1751
|
tao
|
sql.append(" where server like '").append(server).append("'");
|
| 621 |
1585
|
tao
|
pstmt = dbConn.prepareStatement(sql.toString());
|
| 622 |
2286
|
tao
|
|
| 623 |
1585
|
tao
|
pstmt.executeUpdate();
|
| 624 |
|
|
dbConn.commit();
|
| 625 |
|
|
pstmt.close();
|
| 626 |
2286
|
tao
|
MetaCatUtil.debugMessage("last_checked updated to "+datestr+" on "
|
| 627 |
1585
|
tao
|
+ server, 45);
|
| 628 |
|
|
}//if
|
| 629 |
|
|
else
|
| 630 |
|
|
{
|
| 631 |
2286
|
tao
|
|
| 632 |
|
|
MetaCatUtil.debugMessage("Failed to update last_checked for server " +
|
| 633 |
|
|
server + " in db because couldn't get time "
|
| 634 |
1585
|
tao
|
, 30);
|
| 635 |
|
|
throw new Exception("Couldn't get time for server "+ server);
|
| 636 |
|
|
}
|
| 637 |
2286
|
tao
|
|
| 638 |
|
|
}//try
|
| 639 |
1585
|
tao
|
catch(Exception e)
|
| 640 |
|
|
{
|
| 641 |
2286
|
tao
|
|
| 642 |
|
|
MetaCatUtil.debugMessage("Failed to update last_checked for server " +
|
| 643 |
1585
|
tao
|
server + " in db because because " +
|
| 644 |
|
|
e.getMessage(), 30);
|
| 645 |
|
|
throw e;
|
| 646 |
|
|
}
|
| 647 |
|
|
finally
|
| 648 |
|
|
{
|
| 649 |
|
|
//return DBConnection
|
| 650 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 651 |
|
|
}//finally
|
| 652 |
|
|
}
|
| 653 |
2286
|
tao
|
|
| 654 |
|
|
|
| 655 |
|
|
|
| 656 |
1585
|
tao
|
/**
|
| 657 |
|
|
* updates xml_catalog with entries from other servers.
|
| 658 |
|
|
*/
|
| 659 |
|
|
private void updateCatalog()
|
| 660 |
|
|
{
|
| 661 |
|
|
MetaCatUtil.debugMessage("Start of updateCatalog", 35 );
|
| 662 |
|
|
// ReplicationServer object in server list
|
| 663 |
|
|
ReplicationServer replServer = null;
|
| 664 |
|
|
PreparedStatement pstmt = null;
|
| 665 |
|
|
String server = null;
|
| 666 |
2286
|
tao
|
|
| 667 |
|
|
|
| 668 |
1585
|
tao
|
// Go through each ReplicationServer object in sererlist
|
| 669 |
|
|
for (int j=0; j<serverList.size(); j++)
|
| 670 |
2286
|
tao
|
{
|
| 671 |
1585
|
tao
|
Vector remoteCatalog = new Vector();
|
| 672 |
|
|
Vector publicId = new Vector();
|
| 673 |
|
|
try
|
| 674 |
|
|
{
|
| 675 |
1292
|
tao
|
// Get ReplicationServer object from server list
|
| 676 |
|
|
replServer = serverList.serverAt(j);
|
| 677 |
|
|
// Get server name from the ReplicationServer object
|
| 678 |
|
|
server = replServer.getServerName();
|
| 679 |
|
|
// Try to get catalog
|
| 680 |
1011
|
tao
|
URL u = new URL("https://" + server + "?server="+
|
| 681 |
1015
|
tao
|
util.getLocalReplicationServerName()+"&action=getcatalog");
|
| 682 |
1292
|
tao
|
MetaCatUtil.debugMessage("sending message " + u.toString(), 50);
|
| 683 |
590
|
berkley
|
String catxml = MetacatReplication.getURLContent(u);
|
| 684 |
2286
|
tao
|
|
| 685 |
1292
|
tao
|
// Make sure there are not error, no empty string
|
| 686 |
|
|
if (catxml.indexOf("error")!=-1 || catxml==null||catxml.equals(""))
|
| 687 |
|
|
{
|
| 688 |
1585
|
tao
|
throw new Exception("Couldn't get catalog list form server " +server);
|
| 689 |
1292
|
tao
|
}
|
| 690 |
1585
|
tao
|
MetaCatUtil.debugMessage("catxml: " + catxml, 40);
|
| 691 |
590
|
berkley
|
CatalogMessageHandler cmh = new CatalogMessageHandler();
|
| 692 |
|
|
XMLReader catparser = initParser(cmh);
|
| 693 |
|
|
catparser.parse(new InputSource(new StringReader(catxml)));
|
| 694 |
|
|
//parse the returned catalog xml and put it into a vector
|
| 695 |
1585
|
tao
|
remoteCatalog = cmh.getCatalogVect();
|
| 696 |
2286
|
tao
|
|
| 697 |
1292
|
tao
|
// Makse sure remoteCatalog is not empty
|
| 698 |
|
|
if (remoteCatalog.isEmpty())
|
| 699 |
|
|
{
|
| 700 |
1585
|
tao
|
throw new Exception("Couldn't get catalog list form server " +server);
|
| 701 |
1292
|
tao
|
}
|
| 702 |
2286
|
tao
|
|
| 703 |
590
|
berkley
|
String localcatxml = MetacatReplication.getCatalogXML();
|
| 704 |
2286
|
tao
|
|
| 705 |
1292
|
tao
|
// Make sure local catalog is no empty
|
| 706 |
|
|
if (localcatxml==null||localcatxml.equals(""))
|
| 707 |
|
|
{
|
| 708 |
1585
|
tao
|
throw new Exception("Couldn't get catalog list form server " +server);
|
| 709 |
1292
|
tao
|
}
|
| 710 |
2286
|
tao
|
|
| 711 |
590
|
berkley
|
cmh = new CatalogMessageHandler();
|
| 712 |
|
|
catparser = initParser(cmh);
|
| 713 |
|
|
catparser.parse(new InputSource(new StringReader(localcatxml)));
|
| 714 |
|
|
Vector localCatalog = cmh.getCatalogVect();
|
| 715 |
2286
|
tao
|
|
| 716 |
590
|
berkley
|
//now we have the catalog from the remote server and this local server
|
| 717 |
|
|
//we now need to compare the two and merge the differences.
|
| 718 |
|
|
//the comparison is base on the public_id fields which is the 4th
|
| 719 |
|
|
//entry in each row vector.
|
| 720 |
1585
|
tao
|
publicId = new Vector();
|
| 721 |
590
|
berkley
|
for(int i=0; i<localCatalog.size(); i++)
|
| 722 |
|
|
{
|
| 723 |
|
|
Vector v = new Vector((Vector)localCatalog.elementAt(i));
|
| 724 |
1292
|
tao
|
MetaCatUtil.debugMessage("v1: " + v.toString(), 50);
|
| 725 |
590
|
berkley
|
publicId.add(new String((String)v.elementAt(3)));
|
| 726 |
595
|
berkley
|
//System.out.println("adding " + (String)v.elementAt(3));
|
| 727 |
590
|
berkley
|
}
|
| 728 |
1585
|
tao
|
}//try
|
| 729 |
|
|
catch (Exception e)
|
| 730 |
|
|
{
|
| 731 |
|
|
MetacatReplication.replErrorLog("Failed to update catalog for server "+
|
| 732 |
|
|
server + " because " +e.getMessage());
|
| 733 |
|
|
MetaCatUtil.debugMessage("Failed to update catalog for server "+
|
| 734 |
|
|
server + " because " +e.getMessage(), 30);
|
| 735 |
|
|
}//catch
|
| 736 |
2286
|
tao
|
|
| 737 |
1585
|
tao
|
for(int i=0; i<remoteCatalog.size(); i++)
|
| 738 |
|
|
{
|
| 739 |
|
|
// DConnection
|
| 740 |
|
|
DBConnection dbConn = null;
|
| 741 |
|
|
// DBConnection checkout serial number
|
| 742 |
|
|
int serialNumber = -1;
|
| 743 |
|
|
try
|
| 744 |
590
|
berkley
|
{
|
| 745 |
1585
|
tao
|
dbConn=DBConnectionPool.
|
| 746 |
|
|
getDBConnection("ReplicationHandler.updateCatalog");
|
| 747 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 748 |
|
|
Vector v = (Vector)remoteCatalog.elementAt(i);
|
| 749 |
|
|
//System.out.println("v2: " + v.toString());
|
| 750 |
|
|
//System.out.println("i: " + i);
|
| 751 |
|
|
//System.out.println("remoteCatalog.size(): " + remoteCatalog.size());
|
| 752 |
|
|
//System.out.println("publicID: " + publicId.toString());
|
| 753 |
|
|
MetaCatUtil.debugMessage
|
| 754 |
1292
|
tao
|
("v.elementAt(3): " + (String)v.elementAt(3), 50);
|
| 755 |
1585
|
tao
|
if(!publicId.contains(v.elementAt(3)))
|
| 756 |
|
|
{ //so we don't have this public id in our local table so we need to
|
| 757 |
|
|
//add it.
|
| 758 |
|
|
//System.out.println("in if");
|
| 759 |
|
|
StringBuffer sql = new StringBuffer();
|
| 760 |
|
|
sql.append("insert into xml_catalog (entry_type, source_doctype, ");
|
| 761 |
|
|
sql.append("target_doctype, public_id, system_id) values (?,?,?,");
|
| 762 |
|
|
sql.append("?,?)");
|
| 763 |
|
|
//System.out.println("sql: " + sql.toString());
|
| 764 |
|
|
pstmt = dbConn.prepareStatement(sql.toString());
|
| 765 |
|
|
pstmt.setString(1, (String)v.elementAt(0));
|
| 766 |
|
|
pstmt.setString(2, (String)v.elementAt(1));
|
| 767 |
|
|
pstmt.setString(3, (String)v.elementAt(2));
|
| 768 |
|
|
pstmt.setString(4, (String)v.elementAt(3));
|
| 769 |
|
|
pstmt.setString(5, (String)v.elementAt(4));
|
| 770 |
|
|
pstmt.execute();
|
| 771 |
|
|
pstmt.close();
|
| 772 |
|
|
MetacatReplication.replLog("Success fully to insert new publicid "+
|
| 773 |
|
|
(String)v.elementAt(3) + " from server"+server);
|
| 774 |
|
|
MetaCatUtil.debugMessage("Success fully to insert new publicid "+
|
| 775 |
|
|
(String)v.elementAt(3) + " from server" +server, 30);
|
| 776 |
|
|
}
|
| 777 |
590
|
berkley
|
}
|
| 778 |
1585
|
tao
|
catch(Exception e)
|
| 779 |
|
|
{
|
| 780 |
|
|
MetacatReplication.replErrorLog("Failed to update catalog for server "+
|
| 781 |
|
|
server + " because " +e.getMessage());
|
| 782 |
|
|
MetaCatUtil.debugMessage("Failed to update catalog for server "+
|
| 783 |
|
|
server + " because " +e.getMessage(), 30);
|
| 784 |
|
|
}//catch
|
| 785 |
|
|
finally
|
| 786 |
|
|
{
|
| 787 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 788 |
|
|
}//finall
|
| 789 |
|
|
}//for remote catalog
|
| 790 |
|
|
}//for server list
|
| 791 |
|
|
MetaCatUtil.debugMessage("End of updateCatalog", 35);
|
| 792 |
590
|
berkley
|
}
|
| 793 |
2286
|
tao
|
|
| 794 |
590
|
berkley
|
/**
|
| 795 |
579
|
berkley
|
* Method that returns true if docid has already been "deleted" from metacat.
|
| 796 |
582
|
berkley
|
* This method really implements a truth table for deleted documents
|
| 797 |
590
|
berkley
|
* The table is (a docid in one of the tables is represented by the X):
|
| 798 |
582
|
berkley
|
* xml_docs xml_revs deleted?
|
| 799 |
|
|
* ------------------------------------
|
| 800 |
|
|
* X X FALSE
|
| 801 |
|
|
* X _ FALSE
|
| 802 |
|
|
* _ X TRUE
|
| 803 |
|
|
* _ _ TRUE
|
| 804 |
579
|
berkley
|
*/
|
| 805 |
1585
|
tao
|
private static boolean alreadyDeleted(String docid) throws Exception
|
| 806 |
579
|
berkley
|
{
|
| 807 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 808 |
|
|
int serialNumber = -1;
|
| 809 |
|
|
PreparedStatement pstmt = null;
|
| 810 |
579
|
berkley
|
try
|
| 811 |
|
|
{
|
| 812 |
1217
|
tao
|
dbConn=DBConnectionPool.
|
| 813 |
|
|
getDBConnection("ReplicationHandler.alreadyDeleted");
|
| 814 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 815 |
582
|
berkley
|
boolean xml_docs = false;
|
| 816 |
|
|
boolean xml_revs = false;
|
| 817 |
2286
|
tao
|
|
| 818 |
579
|
berkley
|
StringBuffer sb = new StringBuffer();
|
| 819 |
582
|
berkley
|
sb.append("select docid from xml_revisions where docid like '");
|
| 820 |
579
|
berkley
|
sb.append(docid).append("'");
|
| 821 |
1217
|
tao
|
pstmt = dbConn.prepareStatement(sb.toString());
|
| 822 |
579
|
berkley
|
pstmt.execute();
|
| 823 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 824 |
|
|
boolean tablehasrows = rs.next();
|
| 825 |
|
|
if(tablehasrows)
|
| 826 |
|
|
{
|
| 827 |
582
|
berkley
|
xml_revs = true;
|
| 828 |
|
|
}
|
| 829 |
2286
|
tao
|
|
| 830 |
582
|
berkley
|
sb = new StringBuffer();
|
| 831 |
|
|
sb.append("select docid from xml_documents where docid like '");
|
| 832 |
|
|
sb.append(docid).append("'");
|
| 833 |
667
|
berkley
|
pstmt.close();
|
| 834 |
1217
|
tao
|
pstmt = dbConn.prepareStatement(sb.toString());
|
| 835 |
|
|
//increase usage count
|
| 836 |
|
|
dbConn.increaseUsageCount(1);
|
| 837 |
582
|
berkley
|
pstmt.execute();
|
| 838 |
|
|
rs = pstmt.getResultSet();
|
| 839 |
|
|
tablehasrows = rs.next();
|
| 840 |
667
|
berkley
|
pstmt.close();
|
| 841 |
582
|
berkley
|
if(tablehasrows)
|
| 842 |
|
|
{
|
| 843 |
|
|
xml_docs = true;
|
| 844 |
|
|
}
|
| 845 |
2286
|
tao
|
|
| 846 |
582
|
berkley
|
if(xml_docs && xml_revs)
|
| 847 |
|
|
{
|
| 848 |
|
|
return false;
|
| 849 |
|
|
}
|
| 850 |
|
|
else if(xml_docs && !xml_revs)
|
| 851 |
|
|
{
|
| 852 |
|
|
return false;
|
| 853 |
|
|
}
|
| 854 |
|
|
else if(!xml_docs && xml_revs)
|
| 855 |
|
|
{
|
| 856 |
579
|
berkley
|
return true;
|
| 857 |
|
|
}
|
| 858 |
582
|
berkley
|
else if(!xml_docs && !xml_revs)
|
| 859 |
|
|
{
|
| 860 |
|
|
return true;
|
| 861 |
|
|
}
|
| 862 |
579
|
berkley
|
}
|
| 863 |
|
|
catch(Exception e)
|
| 864 |
|
|
{
|
| 865 |
2286
|
tao
|
MetaCatUtil.debugMessage("error in ReplicationHandler.alreadyDeleted: " +
|
| 866 |
1585
|
tao
|
e.getMessage(), 30);
|
| 867 |
|
|
throw e;
|
| 868 |
579
|
berkley
|
}
|
| 869 |
667
|
berkley
|
finally
|
| 870 |
|
|
{
|
| 871 |
1217
|
tao
|
try
|
| 872 |
|
|
{
|
| 873 |
|
|
pstmt.close();
|
| 874 |
|
|
}//try
|
| 875 |
|
|
catch (SQLException ee)
|
| 876 |
|
|
{
|
| 877 |
|
|
MetaCatUtil.debugMessage("Error in replicationHandler.alreadyDeleted "+
|
| 878 |
|
|
"to close pstmt: "+ee.getMessage(), 30);
|
| 879 |
1585
|
tao
|
throw ee;
|
| 880 |
1217
|
tao
|
}//catch
|
| 881 |
|
|
finally
|
| 882 |
|
|
{
|
| 883 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 884 |
|
|
}//finally
|
| 885 |
|
|
}//finally
|
| 886 |
579
|
berkley
|
return false;
|
| 887 |
|
|
}
|
| 888 |
533
|
berkley
|
|
| 889 |
2286
|
tao
|
|
| 890 |
533
|
berkley
|
/**
|
| 891 |
574
|
berkley
|
* Method to initialize the message parser
|
| 892 |
|
|
*/
|
| 893 |
|
|
public static XMLReader initParser(DefaultHandler dh)
|
| 894 |
|
|
throws Exception
|
| 895 |
|
|
{
|
| 896 |
|
|
XMLReader parser = null;
|
| 897 |
|
|
|
| 898 |
|
|
try {
|
| 899 |
|
|
ContentHandler chandler = dh;
|
| 900 |
|
|
|
| 901 |
|
|
// Get an instance of the parser
|
| 902 |
|
|
MetaCatUtil util = new MetaCatUtil();
|
| 903 |
|
|
String parserName = util.getOption("saxparser");
|
| 904 |
|
|
parser = XMLReaderFactory.createXMLReader(parserName);
|
| 905 |
|
|
|
| 906 |
|
|
// Turn off validation
|
| 907 |
|
|
parser.setFeature("http://xml.org/sax/features/validation", false);
|
| 908 |
2286
|
tao
|
|
| 909 |
574
|
berkley
|
parser.setContentHandler((ContentHandler)chandler);
|
| 910 |
|
|
parser.setErrorHandler((ErrorHandler)chandler);
|
| 911 |
|
|
|
| 912 |
|
|
} catch (Exception e) {
|
| 913 |
|
|
throw e;
|
| 914 |
|
|
}
|
| 915 |
|
|
|
| 916 |
|
|
return parser;
|
| 917 |
|
|
}
|
| 918 |
2286
|
tao
|
|
| 919 |
|
|
|
| 920 |
522
|
berkley
|
}
|