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/**
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* '$RCSfile$'
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* Purpose: A Class that implements replication for metacat
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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.util.*;
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import java.io.*;
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import java.sql.*;
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import java.net.*;
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import java.lang.*;
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import java.text.*;
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import javax.servlet.*;
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import javax.servlet.http.*;
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import org.xml.sax.*;
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public class MetacatReplication extends HttpServlet implements Runnable
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{
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private String deltaT;
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Timer replicationDaemon;
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private static MetaCatUtil util = new MetaCatUtil();
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private Vector fileLocks = new Vector();
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private Thread lockThread = null;
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private static final AbstractDatabase dbAdapter = MetaCatUtil.dbAdapter;
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/**
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* Initialize the servlet by creating appropriate database connections
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*/
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public void init(ServletConfig config) throws ServletException
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{
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//initialize db connections to handle any update requests
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MetaCatUtil util = new MetaCatUtil();
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deltaT = util.getOption("deltaT");
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//the default deltaT can be set from metacat.properties
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//create a thread to do the delta-T check but don't execute it yet
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replicationDaemon = new Timer(true);
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/*java.net.URL.setURLStreamHandlerFactory(
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new java.net.URLStreamHandlerFactory()
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{
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public java.net.URLStreamHandler createURLStreamHandler(
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final String protocol)
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{
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if ("http".equals(protocol))
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{
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try
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{
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URLStreamHandler urlsh = new HTTPClient.http.Handler();
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MetaCatUtil.debugMessage("Using HttpClient Protocol Handler for http", 45);
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return urlsh;
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}
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catch (Exception e)
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{
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MetaCatUtil.debugMessage(
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"Error setting URL StreamHandler!", 30);
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return null;
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}
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}//if
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else if ("https".equals(protocol))
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{
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try
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{
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URLStreamHandler urlsh = new HTTPClient.https.Handler();
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MetaCatUtil.debugMessage("Using HttpClient Protocol Handler for https", 45);
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return urlsh;
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}
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catch (Exception e)
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{
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MetaCatUtil.debugMessage(
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"Error setting URL StreamHandler!", 30);
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return null;
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}
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}
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return null;
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}//createURLStreamHandler
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});*/
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}
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public void destroy()
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{
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replicationDaemon.cancel();
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// System.out.println("Replication daemon cancelled.");
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}
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public void doGet (HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException
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{
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// Process the data and send back the response
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handleGetOrPost(request, response);
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}
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public void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException
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{
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// Process the data and send back the response
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handleGetOrPost(request, response);
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}
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private void handleGetOrPost(HttpServletRequest request,
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HttpServletResponse response)
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throws ServletException, IOException
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{
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//PrintWriter out = response.getWriter();
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//ServletOutputStream outPut = response.getOutputStream();
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Hashtable params = new Hashtable();
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Enumeration paramlist = request.getParameterNames();
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// NOT NEEDED - doesn't provide enough security because of possible IP spoofing
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// REPLACED with running replication comminications over HTTPS
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// String requestingServerIP = request.getRemoteAddr();
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// InetAddress iaddr = InetAddress.getByName(requestingServerIP);
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// String requestingServer = iaddr.getHostName();
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while (paramlist.hasMoreElements()) {
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String name = (String)paramlist.nextElement();
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String[] value = request.getParameterValues(name);
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params.put(name, value);
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}
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String action = ((String[])params.get("action"))[0];
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String server = null;
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try {
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// check if the server is included in the list of replicated servers
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if ( !action.equals("servercontrol") &&
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!action.equals("stop") &&
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!action.equals("start") &&
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!action.equals("getall") ) {
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server = ((String[])params.get("server"))[0];
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if ( getServerCodeForServerName(server) == 0 ) {
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System.out.println("Action \"" + action +
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"\" rejected for server: " + server);
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return;
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} else {
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System.out.println("Action \"" + action +
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"\" accepted for server: " + server);
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}
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}
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} catch (Exception e) {
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System.out.println("Error in MetacatReplication.handleGetOrPost: " +
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e.getMessage() );
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return;
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}
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if ( action.equals("readdata") )
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{
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OutputStream out=response.getOutputStream();
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//to get the data file.
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handleGetDataFileRequest(out, params, response);
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out.close();
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}
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else if ( action.equals("forcereplicatedatafile") )
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{
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//read a specific docid from remote host, and store it into local host
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handleForceReplicateDataFileRequest(params);
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}
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else
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{
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PrintWriter out = response.getWriter();
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840
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if ( action.equals("stop") ) {
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//stop the replication server
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replicationDaemon.cancel();
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replicationDaemon = new Timer(true);
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out.println("Replication Handler Stopped");
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MetacatReplication.replLog("deltaT handler stopped");
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} else if ( action.equals("start") ) {
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//start the replication server
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int rate;
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if ( params.containsKey("rate") ) {
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rate = new Integer(
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new String(((String[])params.get("rate"))[0])).intValue();
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if(rate < 30) {
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549
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berkley
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out.println("Replication deltaT rate cannot be less than 30!");
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583
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//deltaT<30 is a timing mess!
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549
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rate = 1000;
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}
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} else {
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rate = 1000;
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}
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out.println("New rate is: " + rate + " seconds.");
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replicationDaemon.cancel();
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replicationDaemon = new Timer(true);
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replicationDaemon.scheduleAtFixedRate(new ReplicationHandler(out), 0,
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rate * 1000);
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out.println("Replication Handler Started");
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MetacatReplication.replLog("deltaT handler started with rate=" +
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rate + " seconds");
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840
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bojilova
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} else if ( action.equals("getall") ) {
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//updates this server exactly once
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replicationDaemon.schedule(new ReplicationHandler(out), 0);
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response.setContentType("text/html");
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out.println("<html><body>\"Get All\" Done</body></html>");
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840
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bojilova
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} else if ( action.equals("forcereplicate") ) {
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1020
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//read a specific docid from remote host, and store it into local host
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handleForceReplicateRequest(out, params, response);
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| 231 |
840
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} else if ( action.equals("update") ) {
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//request an update list from the server
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handleUpdateRequest(out, params, response);
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840
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bojilova
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} else if ( action.equals("read") ) {
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//request a specific document from the server
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//note that this could be replaced by a call to metacatServlet
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//handleGetDocumentAction().
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handleGetDocumentRequest(out, params, response);
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| 240 |
840
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bojilova
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} else if ( action.equals("getlock") ) {
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bojilova
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handleGetLockRequest(out, params, response);
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| 243 |
840
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bojilova
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} else if ( action.equals("getdocumentinfo") ) {
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| 244 |
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bojilova
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handleGetDocumentInfoRequest(out, params, response);
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| 245 |
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| 246 |
840
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bojilova
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} else if ( action.equals("gettime") ) {
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| 247 |
837
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bojilova
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handleGetTimeRequest(out, params, response);
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| 248 |
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| 249 |
840
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bojilova
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} else if ( action.equals("getcatalog") ) {
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| 250 |
837
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bojilova
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handleGetCatalogRequest(out, params, response, true);
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| 251 |
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| 252 |
840
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bojilova
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} else if ( action.equals("servercontrol") ) {
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| 253 |
837
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bojilova
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handleServerControlRequest(out, params, response);
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| 254 |
1097
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tao
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} else if ( action.equals("test") ) {
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| 255 |
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response.setContentType("text/html");
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| 256 |
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out.println("<html><body>Test successfully</body></html>");
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| 257 |
837
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bojilova
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}
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| 258 |
840
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bojilova
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| 259 |
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out.close();
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| 260 |
1020
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tao
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}//else
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| 261 |
522
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berkley
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}
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| 262 |
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| 263 |
595
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berkley
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/**
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| 264 |
|
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* This method can add, delete and list the servers currently included in
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| 265 |
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* xml_replication.
|
| 266 |
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* action subaction other needed params
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| 267 |
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* ---------------------------------------------------------
|
| 268 |
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* servercontrol add server
|
| 269 |
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* servercontrol delete server
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| 270 |
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* servercontrol list
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| 271 |
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*/
|
| 272 |
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private void handleServerControlRequest(PrintWriter out, Hashtable params,
|
| 273 |
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HttpServletResponse response)
|
| 274 |
|
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{
|
| 275 |
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String subaction = ((String[])params.get("subaction"))[0];
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| 276 |
1217
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tao
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DBConnection dbConn = null;
|
| 277 |
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int serialNumber = -1;
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| 278 |
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PreparedStatement pstmt = null;
|
| 279 |
1292
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tao
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String replicate =null;
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| 280 |
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String server = null;
|
| 281 |
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String dataReplicate = null;
|
| 282 |
|
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String hub = null;
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| 283 |
837
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bojilova
|
try {
|
| 284 |
1217
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tao
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//conn = util.openDBConnection();
|
| 285 |
|
|
dbConn=DBConnectionPool.
|
| 286 |
|
|
getDBConnection("MetacatReplication.handleServerControlRequest");
|
| 287 |
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serialNumber=dbConn.getCheckOutSerialNumber();
|
| 288 |
|
|
|
| 289 |
837
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bojilova
|
// add server to server list
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| 290 |
|
|
if ( subaction.equals("add") ) {
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| 291 |
1292
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tao
|
replicate = ((String[])params.get("replicate"))[0];
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| 292 |
|
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server = ((String[])params.get("server"))[0];
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| 293 |
1756
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tao
|
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| 294 |
1292
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tao
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//Get data replication value
|
| 295 |
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|
dataReplicate = ((String[])params.get("datareplicate"))[0];
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| 296 |
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//Get hub value
|
| 297 |
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hub = ((String[])params.get("hub"))[0];
|
| 298 |
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|
|
| 299 |
1751
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tao
|
/*pstmt = dbConn.prepareStatement("INSERT INTO xml_replication " +
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| 300 |
1292
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tao
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"(server, last_checked, replicate, datareplicate, hub) " +
|
| 301 |
837
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bojilova
|
"VALUES ('" + server + "', to_date(" +
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| 302 |
|
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"'01/01/00', 'MM/DD/YY'), '" +
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| 303 |
1292
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tao
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replicate +"', '" +dataReplicate+"', '"
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| 304 |
1751
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tao
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+ hub +"')");*/
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| 305 |
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|
pstmt = dbConn.prepareStatement("INSERT INTO xml_replication " +
|
| 306 |
|
|
"(server, last_checked, replicate, datareplicate, hub) " +
|
| 307 |
|
|
"VALUES ('" + server + "', "+
|
| 308 |
1756
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tao
|
dbAdapter.toDate("01/01/80", "MM/DD/YY")
|
| 309 |
1751
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tao
|
+ ", '" +
|
| 310 |
|
|
replicate +"', '" +dataReplicate+"', '"
|
| 311 |
1292
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tao
|
+ hub +"')");
|
| 312 |
1756
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tao
|
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| 313 |
595
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pstmt.execute();
|
| 314 |
837
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bojilova
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pstmt.close();
|
| 315 |
1217
|
tao
|
dbConn.commit();
|
| 316 |
837
|
bojilova
|
out.println("Server " + server + " added");
|
| 317 |
631
|
berkley
|
response.setContentType("text/html");
|
| 318 |
|
|
out.println("<html><body><table border=\"1\">");
|
| 319 |
|
|
out.println("<tr><td><b>server</b></td><td><b>last_checked</b></td><td>");
|
| 320 |
1292
|
tao
|
out.println("<b>replicate</b></td>");
|
| 321 |
|
|
out.println("<td><b>datareplicate</b></td>");
|
| 322 |
|
|
out.println("<td><b>hub</b></td></tr>");
|
| 323 |
1217
|
tao
|
pstmt = dbConn.prepareStatement("SELECT * FROM xml_replication");
|
| 324 |
|
|
//increase dbconnection usage
|
| 325 |
|
|
dbConn.increaseUsageCount(1);
|
| 326 |
|
|
|
| 327 |
631
|
berkley
|
pstmt.execute();
|
| 328 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 329 |
|
|
boolean tablehasrows = rs.next();
|
| 330 |
837
|
bojilova
|
while(tablehasrows) {
|
| 331 |
631
|
berkley
|
out.println("<tr><td>" + rs.getString(2) + "</td><td>");
|
| 332 |
|
|
out.println(rs.getString(3) + "</td><td>");
|
| 333 |
1292
|
tao
|
out.println(rs.getString(4) + "</td><td>");
|
| 334 |
|
|
out.println(rs.getString(5) + "</td><td>");
|
| 335 |
|
|
out.println(rs.getString(6) + "</td></tr>");
|
| 336 |
|
|
|
| 337 |
631
|
berkley
|
tablehasrows = rs.next();
|
| 338 |
|
|
}
|
| 339 |
|
|
out.println("</table></body></html>");
|
| 340 |
840
|
bojilova
|
|
| 341 |
|
|
// download certificate with the public key on this server
|
| 342 |
|
|
// and import it as a trusted certificate
|
| 343 |
|
|
String certURL = ((String[])params.get("certificate"))[0];
|
| 344 |
|
|
downloadCertificate(certURL);
|
| 345 |
|
|
|
| 346 |
837
|
bojilova
|
// delete server from server list
|
| 347 |
|
|
} else if ( subaction.equals("delete") ) {
|
| 348 |
1292
|
tao
|
server = ((String[])params.get("server"))[0];
|
| 349 |
1217
|
tao
|
pstmt = dbConn.prepareStatement("DELETE FROM xml_replication " +
|
| 350 |
837
|
bojilova
|
"WHERE server LIKE '" + server + "'");
|
| 351 |
595
|
berkley
|
pstmt.execute();
|
| 352 |
837
|
bojilova
|
pstmt.close();
|
| 353 |
1217
|
tao
|
dbConn.commit();
|
| 354 |
837
|
bojilova
|
out.println("Server " + server + " deleted");
|
| 355 |
631
|
berkley
|
response.setContentType("text/html");
|
| 356 |
|
|
out.println("<html><body><table border=\"1\">");
|
| 357 |
|
|
out.println("<tr><td><b>server</b></td><td><b>last_checked</b></td><td>");
|
| 358 |
1292
|
tao
|
out.println("<b>replicate</b></td>");
|
| 359 |
|
|
out.println("<td><b>datareplicate</b></td>");
|
| 360 |
|
|
out.println("<td><b>hub</b></td></tr>");
|
| 361 |
|
|
|
| 362 |
1217
|
tao
|
pstmt = dbConn.prepareStatement("SELECT * FROM xml_replication");
|
| 363 |
|
|
//increase dbconnection usage
|
| 364 |
|
|
dbConn.increaseUsageCount(1);
|
| 365 |
631
|
berkley
|
pstmt.execute();
|
| 366 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 367 |
|
|
boolean tablehasrows = rs.next();
|
| 368 |
|
|
while(tablehasrows)
|
| 369 |
|
|
{
|
| 370 |
|
|
out.println("<tr><td>" + rs.getString(2) + "</td><td>");
|
| 371 |
|
|
out.println(rs.getString(3) + "</td><td>");
|
| 372 |
1292
|
tao
|
out.println(rs.getString(4) + "</td><td>");
|
| 373 |
|
|
out.println(rs.getString(5) + "</td><td>");
|
| 374 |
|
|
out.println(rs.getString(6) + "</td></tr>");
|
| 375 |
631
|
berkley
|
tablehasrows = rs.next();
|
| 376 |
|
|
}
|
| 377 |
|
|
out.println("</table></body></html>");
|
| 378 |
837
|
bojilova
|
|
| 379 |
|
|
// list servers in server list
|
| 380 |
|
|
} else if ( subaction.equals("list") ) {
|
| 381 |
595
|
berkley
|
response.setContentType("text/html");
|
| 382 |
|
|
out.println("<html><body><table border=\"1\">");
|
| 383 |
629
|
berkley
|
out.println("<tr><td><b>server</b></td><td><b>last_checked</b></td><td>");
|
| 384 |
1292
|
tao
|
out.println("<b>replicate</b></td>");
|
| 385 |
|
|
out.println("<td><b>datareplicate</b></td>");
|
| 386 |
|
|
out.println("<td><b>hub</b></td></tr>");
|
| 387 |
1217
|
tao
|
pstmt = dbConn.prepareStatement("SELECT * FROM xml_replication");
|
| 388 |
595
|
berkley
|
pstmt.execute();
|
| 389 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 390 |
|
|
boolean tablehasrows = rs.next();
|
| 391 |
837
|
bojilova
|
while(tablehasrows) {
|
| 392 |
595
|
berkley
|
out.println("<tr><td>" + rs.getString(2) + "</td><td>");
|
| 393 |
629
|
berkley
|
out.println(rs.getString(3) + "</td><td>");
|
| 394 |
1292
|
tao
|
out.println(rs.getString(4) + "</td><td>");
|
| 395 |
|
|
out.println(rs.getString(5) + "</td><td>");
|
| 396 |
|
|
out.println(rs.getString(6) + "</td></tr>");
|
| 397 |
595
|
berkley
|
tablehasrows = rs.next();
|
| 398 |
|
|
}
|
| 399 |
|
|
out.println("</table></body></html>");
|
| 400 |
1292
|
tao
|
}
|
| 401 |
|
|
else
|
| 402 |
|
|
{
|
| 403 |
|
|
|
| 404 |
|
|
out.println("<error>Unkonwn subaction</error>");
|
| 405 |
|
|
|
| 406 |
595
|
berkley
|
}
|
| 407 |
667
|
berkley
|
pstmt.close();
|
| 408 |
1217
|
tao
|
//conn.close();
|
| 409 |
837
|
bojilova
|
|
| 410 |
|
|
} catch(Exception e) {
|
| 411 |
|
|
System.out.println("Error in " +
|
| 412 |
675
|
berkley
|
"MetacatReplication.handleServerControlRequest " +
|
| 413 |
595
|
berkley
|
e.getMessage());
|
| 414 |
|
|
e.printStackTrace(System.out);
|
| 415 |
|
|
}
|
| 416 |
1217
|
tao
|
finally
|
| 417 |
|
|
{
|
| 418 |
|
|
try
|
| 419 |
|
|
{
|
| 420 |
|
|
pstmt.close();
|
| 421 |
|
|
}//try
|
| 422 |
|
|
catch (SQLException ee)
|
| 423 |
|
|
{
|
| 424 |
|
|
MetaCatUtil.debugMessage("Error in " +
|
| 425 |
|
|
"MetacatReplication.handleServerControlRequest to close pstmt "
|
| 426 |
1498
|
tao
|
+ ee.getMessage(), 30);
|
| 427 |
1217
|
tao
|
}//catch
|
| 428 |
|
|
finally
|
| 429 |
|
|
{
|
| 430 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 431 |
|
|
}//finally
|
| 432 |
|
|
}//finally
|
| 433 |
|
|
|
| 434 |
595
|
berkley
|
}
|
| 435 |
|
|
|
| 436 |
840
|
bojilova
|
// download certificate with the public key from certURL and
|
| 437 |
|
|
// upload it onto this server; it then must be imported as a
|
| 438 |
|
|
// trusted certificate
|
| 439 |
|
|
private void downloadCertificate (String certURL)
|
| 440 |
|
|
throws FileNotFoundException, IOException, MalformedURLException
|
| 441 |
|
|
{
|
| 442 |
|
|
MetaCatUtil util = new MetaCatUtil();
|
| 443 |
|
|
String certPath = util.getOption("certPath"); //the path to be uploaded to
|
| 444 |
|
|
|
| 445 |
|
|
// get filename from the URL of the certificate
|
| 446 |
|
|
String filename = certURL;
|
| 447 |
|
|
int slash = Math.max(filename.lastIndexOf('/'), filename.lastIndexOf('\\'));
|
| 448 |
|
|
if ( slash > -1 ) {
|
| 449 |
|
|
filename = filename.substring(slash + 1);
|
| 450 |
|
|
}
|
| 451 |
|
|
|
| 452 |
|
|
// open file output strem to write the input into it
|
| 453 |
|
|
File f = new File(certPath, filename);
|
| 454 |
|
|
synchronized (f) {
|
| 455 |
|
|
try {
|
| 456 |
|
|
if ( f.exists() ) {
|
| 457 |
|
|
throw new IOException("File already exist: " + f.getCanonicalFile());
|
| 458 |
|
|
//if ( f.exists() && !f.canWrite() ) {
|
| 459 |
|
|
// throw new IOException("Not writable: " + f.getCanonicalFile());
|
| 460 |
|
|
}
|
| 461 |
|
|
} catch (SecurityException se) {
|
| 462 |
|
|
// if a security manager exists,
|
| 463 |
|
|
// its checkRead method is called for f.exist()
|
| 464 |
|
|
// or checkWrite method is called for f.canWrite()
|
| 465 |
|
|
throw se;
|
| 466 |
|
|
}
|
| 467 |
|
|
|
| 468 |
|
|
// create a buffered byte output stream
|
| 469 |
|
|
// that uses a default-sized output buffer
|
| 470 |
|
|
FileOutputStream fos = new FileOutputStream(f);
|
| 471 |
|
|
BufferedOutputStream out = new BufferedOutputStream(fos);
|
| 472 |
|
|
|
| 473 |
|
|
// this should be http url
|
| 474 |
|
|
URL url = new URL(certURL);
|
| 475 |
|
|
BufferedInputStream bis = null;
|
| 476 |
|
|
try {
|
| 477 |
|
|
bis = new BufferedInputStream(url.openStream());
|
| 478 |
|
|
byte[] buf = new byte[4 * 1024]; // 4K buffer
|
| 479 |
|
|
int b = bis.read(buf);
|
| 480 |
|
|
while (b != -1) {
|
| 481 |
|
|
out.write(buf, 0, b);
|
| 482 |
|
|
b = bis.read(buf);
|
| 483 |
|
|
}
|
| 484 |
|
|
} finally {
|
| 485 |
|
|
if (bis != null) bis.close();
|
| 486 |
|
|
}
|
| 487 |
|
|
// the input and the output streams must be closed
|
| 488 |
|
|
bis.close();
|
| 489 |
|
|
out.flush();
|
| 490 |
|
|
out.close();
|
| 491 |
|
|
fos.close();
|
| 492 |
|
|
} // end of synchronized(f)
|
| 493 |
|
|
}
|
| 494 |
|
|
|
| 495 |
583
|
berkley
|
/**
|
| 496 |
1020
|
tao
|
* when a forcereplication request comes in, local host sends a read request
|
| 497 |
|
|
* to the requesting server (remote server) for the specified docid.
|
| 498 |
|
|
* Then store it in local database.
|
| 499 |
583
|
berkley
|
*/
|
| 500 |
574
|
berkley
|
private void handleForceReplicateRequest(PrintWriter out, Hashtable params,
|
| 501 |
|
|
HttpServletResponse response)
|
| 502 |
|
|
{
|
| 503 |
837
|
bojilova
|
String server = ((String[])params.get("server"))[0]; // the server that
|
| 504 |
|
|
String docid = ((String[])params.get("docid"))[0]; // sent the document
|
| 505 |
|
|
String dbaction = "UPDATE"; // the default action is UPDATE
|
| 506 |
577
|
berkley
|
boolean override = false;
|
| 507 |
|
|
int serverCode = 1;
|
| 508 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 509 |
|
|
int serialNumber = -1;
|
| 510 |
1061
|
tao
|
|
| 511 |
837
|
bojilova
|
try {
|
| 512 |
|
|
//if the url contains a dbaction then the default action is overridden
|
| 513 |
|
|
if(params.containsKey("dbaction")) {
|
| 514 |
577
|
berkley
|
dbaction = ((String[])params.get("dbaction"))[0];
|
| 515 |
1057
|
tao
|
//serverCode = MetacatReplication.getServerCode(server);
|
| 516 |
|
|
//override = true; //we are now overriding the default action
|
| 517 |
577
|
berkley
|
}
|
| 518 |
1292
|
tao
|
MetacatReplication.replLog("force replication request from " + server);
|
| 519 |
|
|
MetaCatUtil.debugMessage("Force replication request from: "+ server, 34);
|
| 520 |
|
|
MetaCatUtil.debugMessage("Force replication docid: "+docid, 34);
|
| 521 |
|
|
MetaCatUtil.debugMessage("Force replication action: "+dbaction, 34);
|
| 522 |
|
|
// sending back read request to remote server
|
| 523 |
1014
|
tao
|
URL u = new URL("https://" + server + "?server="
|
| 524 |
|
|
+util.getLocalReplicationServerName()
|
| 525 |
|
|
+"&action=read&docid=" + docid);
|
| 526 |
574
|
berkley
|
String xmldoc = MetacatReplication.getURLContent(u);
|
| 527 |
1057
|
tao
|
|
| 528 |
837
|
bojilova
|
// get the document info from server
|
| 529 |
|
|
URL docinfourl = new URL("https://" + server +
|
| 530 |
1014
|
tao
|
"?server="+util.getLocalReplicationServerName()
|
| 531 |
|
|
+"&action=getdocumentinfo&docid=" + docid);
|
| 532 |
1057
|
tao
|
|
| 533 |
574
|
berkley
|
String docInfoStr = MetacatReplication.getURLContent(docinfourl);
|
| 534 |
1057
|
tao
|
|
| 535 |
837
|
bojilova
|
//dih is the parser for the docinfo xml format
|
| 536 |
574
|
berkley
|
DocInfoHandler dih = new DocInfoHandler();
|
| 537 |
|
|
XMLReader docinfoParser = ReplicationHandler.initParser(dih);
|
| 538 |
|
|
docinfoParser.parse(new InputSource(new StringReader(docInfoStr)));
|
| 539 |
|
|
Hashtable docinfoHash = dih.getDocInfo();
|
| 540 |
1292
|
tao
|
|
| 541 |
|
|
// Get user owner of this docid
|
| 542 |
574
|
berkley
|
String user = (String)docinfoHash.get("user_owner");
|
| 543 |
1292
|
tao
|
// Get home server of this docid
|
| 544 |
1057
|
tao
|
String homeServer=(String)docinfoHash.get("home_server");
|
| 545 |
1292
|
tao
|
MetaCatUtil.debugMessage("homeServer: "+homeServer, 34);
|
| 546 |
1561
|
tao
|
// Get Document type
|
| 547 |
|
|
String docType = (String)docinfoHash.get("doctype");
|
| 548 |
|
|
MetaCatUtil.debugMessage("docType: "+docType, 34);
|
| 549 |
|
|
String parserBase = null;
|
| 550 |
|
|
// this for eml2 and we need user eml2 parser
|
| 551 |
|
|
if (docType != null &&
|
| 552 |
|
|
(docType.trim()).equals(DocumentImpl.EMLNAMESPACE))
|
| 553 |
|
|
{
|
| 554 |
|
|
MetaCatUtil.debugMessage("This is an eml2 document!", 30);
|
| 555 |
|
|
parserBase = DocumentImpl.EML2;
|
| 556 |
|
|
}
|
| 557 |
|
|
MetaCatUtil.debugMessage("The parserBase is: "+parserBase, 30);
|
| 558 |
|
|
|
| 559 |
1292
|
tao
|
// Get DBConnection from pool
|
| 560 |
1217
|
tao
|
dbConn=DBConnectionPool.
|
| 561 |
|
|
getDBConnection("MetacatReplication.handleForceReplicateRequest");
|
| 562 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 563 |
1292
|
tao
|
// write the document to local database
|
| 564 |
1561
|
tao
|
DocumentImplWrapper wrapper = new DocumentImplWrapper(parserBase, false);
|
| 565 |
|
|
wrapper.writeReplication(dbConn, new StringReader(xmldoc), null, null,
|
| 566 |
|
|
dbaction, docid, user, null, homeServer, server);
|
| 567 |
1057
|
tao
|
|
| 568 |
584
|
berkley
|
MetacatReplication.replLog("document " + docid + " added to DB with " +
|
| 569 |
|
|
"action " + dbaction);
|
| 570 |
1292
|
tao
|
}//try
|
| 571 |
|
|
catch(Exception e)
|
| 572 |
|
|
{
|
| 573 |
1583
|
tao
|
MetacatReplication.replErrorLog("document " + docid +
|
| 574 |
|
|
" failed to added to DB with " +
|
| 575 |
|
|
"action " + dbaction + " because "+
|
| 576 |
|
|
e.getMessage());
|
| 577 |
|
|
MetaCatUtil.debugMessage("ERROR in MetacatReplication.handleForceReplicate" +
|
| 578 |
|
|
"Request(): " + e.getMessage(), 30);
|
| 579 |
1061
|
tao
|
|
| 580 |
1292
|
tao
|
}//catch
|
| 581 |
1217
|
tao
|
finally
|
| 582 |
|
|
{
|
| 583 |
1292
|
tao
|
// Return the checked out DBConnection
|
| 584 |
1217
|
tao
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 585 |
|
|
}//finally
|
| 586 |
574
|
berkley
|
}
|
| 587 |
|
|
|
| 588 |
561
|
berkley
|
/**
|
| 589 |
1023
|
tao
|
* when a forcereplication data file request comes in, local host sends a
|
| 590 |
|
|
* readdata request to the requesting server (remote server) for the specified
|
| 591 |
|
|
* docid. Then store it in local database and file system
|
| 592 |
|
|
*/
|
| 593 |
|
|
private void handleForceReplicateDataFileRequest(Hashtable params)
|
| 594 |
|
|
{
|
| 595 |
1292
|
tao
|
|
| 596 |
1023
|
tao
|
//make sure there is some parameters
|
| 597 |
|
|
if(params.isEmpty())
|
| 598 |
|
|
{
|
| 599 |
|
|
return;
|
| 600 |
|
|
}
|
| 601 |
1292
|
tao
|
// Get remote server
|
| 602 |
|
|
String server = ((String[])params.get("server"))[0];
|
| 603 |
|
|
// the docid should include rev number
|
| 604 |
|
|
String docid = ((String[])params.get("docid"))[0];
|
| 605 |
|
|
// Make sure there is a docid and server
|
| 606 |
|
|
if (docid==null || server==null || server.equals(""))
|
| 607 |
1023
|
tao
|
{
|
| 608 |
1292
|
tao
|
MetaCatUtil.debugMessage("Didn't specify docid or server for replication"
|
| 609 |
|
|
, 20);
|
| 610 |
1023
|
tao
|
return;
|
| 611 |
|
|
}
|
| 612 |
1292
|
tao
|
|
| 613 |
|
|
// Overide or not
|
| 614 |
1023
|
tao
|
boolean override = false;
|
| 615 |
1292
|
tao
|
// dbaction - update or insert
|
| 616 |
1023
|
tao
|
String dbaction=null;
|
| 617 |
1292
|
tao
|
|
| 618 |
1023
|
tao
|
try
|
| 619 |
|
|
{
|
| 620 |
1292
|
tao
|
//docid was switch to two parts uinque code and rev
|
| 621 |
1023
|
tao
|
String uniqueCode=MetaCatUtil.getDocIdFromString(docid);
|
| 622 |
|
|
int rev=MetaCatUtil.getVersionFromString(docid);
|
| 623 |
|
|
if(params.containsKey("dbaction"))
|
| 624 |
|
|
{
|
| 625 |
|
|
dbaction = ((String[])params.get("dbaction"))[0];
|
| 626 |
|
|
}
|
| 627 |
|
|
else//default value is update
|
| 628 |
|
|
{
|
| 629 |
|
|
dbaction = "update";
|
| 630 |
|
|
}
|
| 631 |
1292
|
tao
|
|
| 632 |
1023
|
tao
|
MetacatReplication.replLog("force replication request from " + server);
|
| 633 |
1292
|
tao
|
MetaCatUtil.debugMessage("Force replication request from: "+ server, 34);
|
| 634 |
|
|
MetaCatUtil.debugMessage("Force replication docid: "+docid, 34);
|
| 635 |
|
|
MetaCatUtil.debugMessage("Force replication action: "+dbaction, 34);
|
| 636 |
1023
|
tao
|
// get the document info from server
|
| 637 |
|
|
URL docinfourl = new URL("https://" + server +
|
| 638 |
|
|
"?server="+util.getLocalReplicationServerName()
|
| 639 |
|
|
+"&action=getdocumentinfo&docid=" + uniqueCode);
|
| 640 |
|
|
|
| 641 |
|
|
String docInfoStr = MetacatReplication.getURLContent(docinfourl);
|
| 642 |
|
|
|
| 643 |
|
|
//dih is the parser for the docinfo xml format
|
| 644 |
|
|
DocInfoHandler dih = new DocInfoHandler();
|
| 645 |
|
|
XMLReader docinfoParser = ReplicationHandler.initParser(dih);
|
| 646 |
|
|
docinfoParser.parse(new InputSource(new StringReader(docInfoStr)));
|
| 647 |
|
|
Hashtable docinfoHash = dih.getDocInfo();
|
| 648 |
|
|
String user = (String)docinfoHash.get("user_owner");
|
| 649 |
|
|
|
| 650 |
|
|
String docName = (String)docinfoHash.get("docname");
|
| 651 |
|
|
|
| 652 |
|
|
String docType = (String)docinfoHash.get("doctype");
|
| 653 |
|
|
|
| 654 |
1065
|
tao
|
String docHomeServer= (String)docinfoHash.get("home_server");
|
| 655 |
1292
|
tao
|
MetaCatUtil.debugMessage("docHomeServer of datafile: "+docHomeServer, 34);
|
| 656 |
1023
|
tao
|
|
| 657 |
1065
|
tao
|
|
| 658 |
|
|
|
| 659 |
1023
|
tao
|
//if action is delete, we don't delete the data file. Just archieve
|
| 660 |
|
|
//the xml_documents
|
| 661 |
|
|
if (dbaction.equals("delete"))
|
| 662 |
|
|
{
|
| 663 |
1217
|
tao
|
//conn = util.getConnection();
|
| 664 |
|
|
DocumentImpl.delete(docid,user,null);
|
| 665 |
|
|
//util.returnConnection(conn);
|
| 666 |
1023
|
tao
|
}
|
| 667 |
1031
|
tao
|
//To data file insert or update is same
|
| 668 |
|
|
else if (dbaction.equals("insert")||dbaction.equals("update"))
|
| 669 |
1023
|
tao
|
{
|
| 670 |
|
|
//Get data file and store it into local file system.
|
| 671 |
|
|
// sending back readdata request to server
|
| 672 |
|
|
URL url = new URL("https://" + server + "?server="
|
| 673 |
|
|
+util.getLocalReplicationServerName()
|
| 674 |
|
|
+"&action=readdata&docid=" + docid);
|
| 675 |
1031
|
tao
|
String datafilePath = util.getOption("datafilepath");
|
| 676 |
|
|
//register data file into xml_documents table and wite data file
|
| 677 |
|
|
//into file system
|
| 678 |
1292
|
tao
|
DocumentImpl.writeDataFileInReplication(url.openStream(), datafilePath,
|
| 679 |
|
|
docName, docType, docid, user,docHomeServer,server);
|
| 680 |
1023
|
tao
|
}
|
| 681 |
|
|
|
| 682 |
1065
|
tao
|
|
| 683 |
1031
|
tao
|
|
| 684 |
1583
|
tao
|
MetacatReplication.replLog("datafile " + docid + " added to DB with " +
|
| 685 |
1023
|
tao
|
"action " + dbaction);
|
| 686 |
1583
|
tao
|
}
|
| 687 |
|
|
catch(Exception e)
|
| 688 |
1023
|
tao
|
{
|
| 689 |
1065
|
tao
|
|
| 690 |
1583
|
tao
|
MetacatReplication.replErrorLog("Datafile " + docid +
|
| 691 |
|
|
" failed to added to DB with " +
|
| 692 |
|
|
"action " + dbaction + " because "+
|
| 693 |
|
|
e.getMessage());
|
| 694 |
|
|
MetaCatUtil.debugMessage
|
| 695 |
1292
|
tao
|
("ERROR in MetacatReplication.handleForceDataFileReplicate" +
|
| 696 |
1065
|
tao
|
"Request(): " + e.getMessage(), 30);
|
| 697 |
1023
|
tao
|
}
|
| 698 |
|
|
}
|
| 699 |
|
|
/**
|
| 700 |
561
|
berkley
|
* Grants or denies a lock to a requesting host.
|
| 701 |
|
|
* The servlet parameters of interrest are:
|
| 702 |
|
|
* docid: the docid of the file the lock is being requested for
|
| 703 |
|
|
* currentdate: the timestamp of the document on the remote server
|
| 704 |
|
|
*
|
| 705 |
|
|
*/
|
| 706 |
|
|
private void handleGetLockRequest(PrintWriter out, Hashtable params,
|
| 707 |
|
|
HttpServletResponse response)
|
| 708 |
|
|
{
|
| 709 |
1292
|
tao
|
|
| 710 |
561
|
berkley
|
try
|
| 711 |
|
|
{
|
| 712 |
1292
|
tao
|
|
| 713 |
561
|
berkley
|
String docid = ((String[])params.get("docid"))[0];
|
| 714 |
580
|
berkley
|
String remoteRev = ((String[])params.get("updaterev"))[0];
|
| 715 |
1217
|
tao
|
DocumentImpl requestDoc = new DocumentImpl(docid);
|
| 716 |
584
|
berkley
|
MetacatReplication.replLog("lock request for " + docid);
|
| 717 |
580
|
berkley
|
int localRevInt = requestDoc.getRev();
|
| 718 |
|
|
int remoteRevInt = Integer.parseInt(remoteRev);
|
| 719 |
|
|
|
| 720 |
|
|
if(remoteRevInt >= localRevInt)
|
| 721 |
561
|
berkley
|
{
|
| 722 |
|
|
if(!fileLocks.contains(docid))
|
| 723 |
580
|
berkley
|
{ //grant the lock if it is not already locked
|
| 724 |
561
|
berkley
|
fileLocks.add(0, docid); //insert at the beginning of the queue Vector
|
| 725 |
|
|
//send a message back to the the remote host authorizing the insert
|
| 726 |
|
|
out.println("<lockgranted><docid>" +docid+ "</docid></lockgranted>");
|
| 727 |
|
|
lockThread = new Thread(this);
|
| 728 |
|
|
lockThread.setPriority(Thread.MIN_PRIORITY);
|
| 729 |
|
|
lockThread.start();
|
| 730 |
584
|
berkley
|
MetacatReplication.replLog("lock granted for " + docid);
|
| 731 |
561
|
berkley
|
}
|
| 732 |
|
|
else
|
| 733 |
|
|
{ //deny the lock
|
| 734 |
|
|
out.println("<filelocked><docid>" + docid + "</docid></filelocked>");
|
| 735 |
584
|
berkley
|
MetacatReplication.replLog("lock denied for " + docid +
|
| 736 |
|
|
"reason: file already locked");
|
| 737 |
561
|
berkley
|
}
|
| 738 |
|
|
}
|
| 739 |
|
|
else
|
| 740 |
|
|
{//deny the lock.
|
| 741 |
|
|
out.println("<outdatedfile><docid>" + docid + "</docid></filelocked>");
|
| 742 |
584
|
berkley
|
MetacatReplication.replLog("lock denied for " + docid +
|
| 743 |
|
|
"reason: client has outdated file");
|
| 744 |
561
|
berkley
|
}
|
| 745 |
1217
|
tao
|
//conn.close();
|
| 746 |
561
|
berkley
|
}
|
| 747 |
|
|
catch(Exception e)
|
| 748 |
|
|
{
|
| 749 |
675
|
berkley
|
System.out.println("error requesting file lock from MetacatReplication." +
|
| 750 |
|
|
"handleGetLockRequest: " + e.getMessage());
|
| 751 |
568
|
berkley
|
e.printStackTrace(System.out);
|
| 752 |
561
|
berkley
|
}
|
| 753 |
|
|
}
|
| 754 |
|
|
|
| 755 |
|
|
/**
|
| 756 |
|
|
* Sends all of the xml_documents information encoded in xml to a requestor
|
| 757 |
583
|
berkley
|
* the format is:
|
| 758 |
|
|
* <!ELEMENT documentinfo (docid, docname, doctype, doctitle, user_owner,
|
| 759 |
1057
|
tao
|
* user_updated, home_server, public_access, rev)/>
|
| 760 |
583
|
berkley
|
* all of the subelements of document info are #PCDATA
|
| 761 |
561
|
berkley
|
*/
|
| 762 |
|
|
private void handleGetDocumentInfoRequest(PrintWriter out, Hashtable params,
|
| 763 |
|
|
HttpServletResponse response)
|
| 764 |
|
|
{
|
| 765 |
|
|
String docid = ((String[])(params.get("docid")))[0];
|
| 766 |
|
|
StringBuffer sb = new StringBuffer();
|
| 767 |
1292
|
tao
|
|
| 768 |
561
|
berkley
|
try
|
| 769 |
|
|
{
|
| 770 |
1292
|
tao
|
|
| 771 |
1217
|
tao
|
DocumentImpl doc = new DocumentImpl(docid);
|
| 772 |
561
|
berkley
|
sb.append("<documentinfo><docid>").append(docid);
|
| 773 |
|
|
sb.append("</docid><docname>").append(doc.getDocname());
|
| 774 |
|
|
sb.append("</docname><doctype>").append(doc.getDoctype());
|
| 775 |
692
|
bojilova
|
sb.append("</doctype>");
|
| 776 |
|
|
sb.append("<user_owner>").append(doc.getUserowner());
|
| 777 |
561
|
berkley
|
sb.append("</user_owner><user_updated>").append(doc.getUserupdated());
|
| 778 |
1057
|
tao
|
sb.append("</user_updated>");
|
| 779 |
|
|
sb.append("<home_server>");
|
| 780 |
1061
|
tao
|
sb.append(doc.getDocHomeServer());
|
| 781 |
1057
|
tao
|
sb.append("</home_server>");
|
| 782 |
|
|
sb.append("<public_access>").append(doc.getPublicaccess());
|
| 783 |
583
|
berkley
|
sb.append("</public_access><rev>").append(doc.getRev());
|
| 784 |
|
|
sb.append("</rev></documentinfo>");
|
| 785 |
561
|
berkley
|
response.setContentType("text/xml");
|
| 786 |
|
|
out.println(sb.toString());
|
| 787 |
1292
|
tao
|
|
| 788 |
561
|
berkley
|
}
|
| 789 |
|
|
catch (Exception e)
|
| 790 |
|
|
{
|
| 791 |
675
|
berkley
|
System.out.println("error in " +
|
| 792 |
|
|
"metacatReplication.handlegetdocumentinforequest: " +
|
| 793 |
|
|
e.getMessage());
|
| 794 |
561
|
berkley
|
}
|
| 795 |
|
|
|
| 796 |
|
|
}
|
| 797 |
1020
|
tao
|
|
| 798 |
|
|
/**
|
| 799 |
|
|
* Sends a datafile to a remote host
|
| 800 |
|
|
*/
|
| 801 |
1023
|
tao
|
private void handleGetDataFileRequest(OutputStream outPut,
|
| 802 |
1020
|
tao
|
Hashtable params, HttpServletResponse response)
|
| 803 |
|
|
|
| 804 |
|
|
{
|
| 805 |
1292
|
tao
|
// File path for data file
|
| 806 |
1020
|
tao
|
String filepath = util.getOption("datafilepath");
|
| 807 |
1292
|
tao
|
// Request docid
|
| 808 |
1020
|
tao
|
String docId = ((String[])(params.get("docid")))[0];
|
| 809 |
1023
|
tao
|
//check if the doicd is null
|
| 810 |
|
|
if (docId==null)
|
| 811 |
|
|
{
|
| 812 |
1097
|
tao
|
util.debugMessage("Didn't specify docid for replication", 20);
|
| 813 |
1023
|
tao
|
return;
|
| 814 |
|
|
}
|
| 815 |
1097
|
tao
|
|
| 816 |
|
|
//try to open a https stream to test if the request server's public key
|
| 817 |
|
|
//in the key store, this is security issue
|
| 818 |
|
|
try
|
| 819 |
|
|
{
|
| 820 |
|
|
String server = ((String[])params.get("server"))[0];
|
| 821 |
|
|
URL u = new URL("https://" + server + "?server="
|
| 822 |
|
|
+util.getLocalReplicationServerName()
|
| 823 |
|
|
+"&action=test");
|
| 824 |
|
|
String test = MetacatReplication.getURLContent(u);
|
| 825 |
|
|
//couldn't pass the test
|
| 826 |
|
|
if (test.indexOf("successfully")==-1)
|
| 827 |
|
|
{
|
| 828 |
|
|
//response.setContentType("text/xml");
|
| 829 |
|
|
//outPut.println("<error>Couldn't pass the trust test</error>");
|
| 830 |
1101
|
tao
|
MetaCatUtil.debugMessage("Couldn't pass the trust test", 20);
|
| 831 |
1097
|
tao
|
return;
|
| 832 |
|
|
}
|
| 833 |
|
|
}//try
|
| 834 |
|
|
catch (Exception ee)
|
| 835 |
|
|
{
|
| 836 |
|
|
return;
|
| 837 |
|
|
}//catch
|
| 838 |
561
|
berkley
|
|
| 839 |
1020
|
tao
|
if(!filepath.endsWith("/"))
|
| 840 |
|
|
{
|
| 841 |
|
|
filepath += "/";
|
| 842 |
|
|
}
|
| 843 |
1292
|
tao
|
// Get file aboslute file name
|
| 844 |
|
|
String filename = filepath + docId;
|
| 845 |
1023
|
tao
|
|
| 846 |
1292
|
tao
|
//MIME type
|
| 847 |
|
|
String contentType = null;
|
| 848 |
|
|
if (filename.endsWith(".xml"))
|
| 849 |
|
|
{
|
| 850 |
|
|
contentType="text/xml";
|
| 851 |
|
|
}
|
| 852 |
|
|
else if (filename.endsWith(".css"))
|
| 853 |
|
|
{
|
| 854 |
|
|
contentType="text/css";
|
| 855 |
|
|
}
|
| 856 |
|
|
else if (filename.endsWith(".dtd"))
|
| 857 |
|
|
{
|
| 858 |
|
|
contentType="text/plain";
|
| 859 |
|
|
}
|
| 860 |
|
|
else if (filename.endsWith(".xsd"))
|
| 861 |
|
|
{
|
| 862 |
|
|
contentType="text/xml";
|
| 863 |
|
|
}
|
| 864 |
|
|
else if (filename.endsWith("/"))
|
| 865 |
|
|
{
|
| 866 |
|
|
contentType="text/html";
|
| 867 |
|
|
}
|
| 868 |
|
|
else
|
| 869 |
|
|
{
|
| 870 |
|
|
File f = new File(filename);
|
| 871 |
|
|
if ( f.isDirectory() )
|
| 872 |
|
|
{
|
| 873 |
|
|
contentType="text/html";
|
| 874 |
|
|
}
|
| 875 |
|
|
else
|
| 876 |
|
|
{
|
| 877 |
|
|
contentType="application/octet-stream";
|
| 878 |
|
|
}
|
| 879 |
|
|
}
|
| 880 |
1023
|
tao
|
|
| 881 |
1292
|
tao
|
// Set the mime type
|
| 882 |
1020
|
tao
|
response.setContentType(contentType);
|
| 883 |
1292
|
tao
|
|
| 884 |
|
|
// Get the content of the file
|
| 885 |
1020
|
tao
|
FileInputStream fin = null;
|
| 886 |
|
|
try
|
| 887 |
|
|
{
|
| 888 |
1292
|
tao
|
// FileInputStream to metacat
|
| 889 |
1020
|
tao
|
fin = new FileInputStream(filename);
|
| 890 |
1292
|
tao
|
// 4K buffer
|
| 891 |
|
|
byte[] buf = new byte[4 * 1024];
|
| 892 |
|
|
// Read data from file input stream to byte array
|
| 893 |
1020
|
tao
|
int b = fin.read(buf);
|
| 894 |
1292
|
tao
|
// Write to outStream from byte array
|
| 895 |
1020
|
tao
|
while (b != -1)
|
| 896 |
|
|
{
|
| 897 |
|
|
outPut.write(buf, 0, b);
|
| 898 |
|
|
b = fin.read(buf);
|
| 899 |
|
|
}
|
| 900 |
1292
|
tao
|
// close file input stream
|
| 901 |
1020
|
tao
|
fin.close();
|
| 902 |
1023
|
tao
|
|
| 903 |
1292
|
tao
|
}//try
|
| 904 |
1020
|
tao
|
catch(Exception e)
|
| 905 |
|
|
{
|
| 906 |
|
|
System.out.println("error getting data file from MetacatReplication." +
|
| 907 |
|
|
"handlGetDataFileRequest " + e.getMessage());
|
| 908 |
|
|
e.printStackTrace(System.out);
|
| 909 |
1292
|
tao
|
}//catch
|
| 910 |
1020
|
tao
|
|
| 911 |
|
|
}
|
| 912 |
|
|
|
| 913 |
|
|
|
| 914 |
561
|
berkley
|
/**
|
| 915 |
|
|
* Sends a document to a remote host
|
| 916 |
|
|
*/
|
| 917 |
534
|
berkley
|
private void handleGetDocumentRequest(PrintWriter out, Hashtable params,
|
| 918 |
561
|
berkley
|
HttpServletResponse response)
|
| 919 |
534
|
berkley
|
{
|
| 920 |
1292
|
tao
|
|
| 921 |
534
|
berkley
|
try
|
| 922 |
|
|
{
|
| 923 |
1097
|
tao
|
//try to open a https stream to test if the request server's public key
|
| 924 |
|
|
//in the key store, this is security issue
|
| 925 |
|
|
String server = ((String[])params.get("server"))[0];
|
| 926 |
|
|
URL u = new URL("https://" + server + "?server="
|
| 927 |
|
|
+util.getLocalReplicationServerName()
|
| 928 |
|
|
+"&action=test");
|
| 929 |
|
|
String test = MetacatReplication.getURLContent(u);
|
| 930 |
|
|
//couldn't pass the test
|
| 931 |
|
|
if (test.indexOf("successfully")==-1)
|
| 932 |
|
|
{
|
| 933 |
|
|
response.setContentType("text/xml");
|
| 934 |
|
|
out.println("<error>Couldn't pass the trust test</error>");
|
| 935 |
1292
|
tao
|
out.close();
|
| 936 |
1097
|
tao
|
return;
|
| 937 |
|
|
}
|
| 938 |
|
|
|
| 939 |
536
|
berkley
|
String docid = ((String[])(params.get("docid")))[0];
|
| 940 |
1292
|
tao
|
|
| 941 |
1217
|
tao
|
DocumentImpl di = new DocumentImpl(docid);
|
| 942 |
534
|
berkley
|
response.setContentType("text/xml");
|
| 943 |
537
|
berkley
|
out.print(di.toString());
|
| 944 |
1292
|
tao
|
|
| 945 |
584
|
berkley
|
MetacatReplication.replLog("document " + docid + " sent");
|
| 946 |
1014
|
tao
|
|
| 947 |
534
|
berkley
|
}
|
| 948 |
|
|
catch(Exception e)
|
| 949 |
|
|
{
|
| 950 |
1099
|
tao
|
MetaCatUtil.debugMessage("error getting document from MetacatReplication."
|
| 951 |
|
|
+"handlGetDocumentRequest " + e.getMessage(), 30);
|
| 952 |
|
|
//e.printStackTrace(System.out);
|
| 953 |
|
|
response.setContentType("text/xml");
|
| 954 |
1292
|
tao
|
out.println("<error>"+e.getMessage()+"</error>");
|
| 955 |
534
|
berkley
|
}
|
| 956 |
|
|
|
| 957 |
|
|
}
|
| 958 |
573
|
berkley
|
|
| 959 |
|
|
/**
|
| 960 |
583
|
berkley
|
* Sends a list of all of the documents on this sever along with their
|
| 961 |
|
|
* revision numbers.
|
| 962 |
|
|
* The format is:
|
| 963 |
|
|
* <!ELEMENT replication (server, updates)>
|
| 964 |
|
|
* <!ELEMENT server (#PCDATA)>
|
| 965 |
|
|
* <!ELEMENT updates ((updatedDocument | deleteDocument)*)>
|
| 966 |
1020
|
tao
|
* <!ELEMENT updatedDocument (docid, rev, datafile*)>
|
| 967 |
1035
|
tao
|
* <!ELEMENT deletedDocument (docid, rev)>
|
| 968 |
583
|
berkley
|
* <!ELEMENT docid (#PCDATA)>
|
| 969 |
|
|
* <!ELEMENT rev (#PCDATA)>
|
| 970 |
1020
|
tao
|
* <!ELEMENT datafile (#PCDATA)>
|
| 971 |
583
|
berkley
|
* note that the rev in deletedDocument is always empty. I just left
|
| 972 |
|
|
* it in there to make the parser implementation easier.
|
| 973 |
573
|
berkley
|
*/
|
| 974 |
|
|
private void handleUpdateRequest(PrintWriter out, Hashtable params,
|
| 975 |
577
|
berkley
|
HttpServletResponse response)
|
| 976 |
|
|
{
|
| 977 |
1292
|
tao
|
// Checked out DBConnection
|
| 978 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 979 |
1292
|
tao
|
// DBConenction serial number when checked it out
|
| 980 |
1217
|
tao
|
int serialNumber = -1;
|
| 981 |
|
|
PreparedStatement pstmt = null;
|
| 982 |
1292
|
tao
|
// Server list to store server info of xml_replication table
|
| 983 |
|
|
ReplicationServerList serverList = null;
|
| 984 |
|
|
|
| 985 |
577
|
berkley
|
try
|
| 986 |
|
|
{
|
| 987 |
1292
|
tao
|
// Check out a DBConnection from pool
|
| 988 |
|
|
dbConn=DBConnectionPool.
|
| 989 |
|
|
getDBConnection("MetacatReplication.handleUpdateRequest");
|
| 990 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 991 |
|
|
// Create a server list from xml_replication table
|
| 992 |
|
|
serverList = new ReplicationServerList();
|
| 993 |
|
|
|
| 994 |
|
|
// Get remote server name from param
|
| 995 |
|
|
String server = ((String[])params.get("server"))[0];
|
| 996 |
|
|
// If no servr name in param, return a error
|
| 997 |
|
|
if ( server == null || server.equals(""))
|
| 998 |
|
|
{
|
| 999 |
|
|
response.setContentType("text/xml");
|
| 1000 |
|
|
out.println("<error>Request didn't specify server name</error>");
|
| 1001 |
|
|
out.close();
|
| 1002 |
|
|
return;
|
| 1003 |
|
|
}//if
|
| 1004 |
|
|
|
| 1005 |
1101
|
tao
|
//try to open a https stream to test if the request server's public key
|
| 1006 |
|
|
//in the key store, this is security issue
|
| 1007 |
|
|
URL u = new URL("https://" + server + "?server="
|
| 1008 |
|
|
+util.getLocalReplicationServerName()
|
| 1009 |
|
|
+"&action=test");
|
| 1010 |
|
|
String test = MetacatReplication.getURLContent(u);
|
| 1011 |
|
|
//couldn't pass the test
|
| 1012 |
|
|
if (test.indexOf("successfully")==-1)
|
| 1013 |
|
|
{
|
| 1014 |
|
|
response.setContentType("text/xml");
|
| 1015 |
|
|
out.println("<error>Couldn't pass the trust test</error>");
|
| 1016 |
1292
|
tao
|
out.close();
|
| 1017 |
1101
|
tao
|
return;
|
| 1018 |
|
|
}
|
| 1019 |
1014
|
tao
|
|
| 1020 |
1292
|
tao
|
|
| 1021 |
|
|
// Check if local host configure to replicate xml documents to remote
|
| 1022 |
|
|
// server. If not send back a error message
|
| 1023 |
|
|
if (!serverList.getReplicationValue(server))
|
| 1024 |
|
|
{
|
| 1025 |
|
|
response.setContentType("text/xml");
|
| 1026 |
|
|
out.println
|
| 1027 |
|
|
("<error>Configuration not allow to replicate document to you</error>");
|
| 1028 |
|
|
out.close();
|
| 1029 |
|
|
return;
|
| 1030 |
|
|
}//if
|
| 1031 |
|
|
|
| 1032 |
|
|
// Store the sql command
|
| 1033 |
577
|
berkley
|
StringBuffer docsql = new StringBuffer();
|
| 1034 |
1292
|
tao
|
// Stroe the docid list
|
| 1035 |
577
|
berkley
|
StringBuffer doclist = new StringBuffer();
|
| 1036 |
1292
|
tao
|
// Store the deleted docid list
|
| 1037 |
|
|
StringBuffer delsql = new StringBuffer();
|
| 1038 |
|
|
// Store the data set file
|
| 1039 |
625
|
berkley
|
Vector packageFiles = new Vector();
|
| 1040 |
577
|
berkley
|
|
| 1041 |
1292
|
tao
|
// Append local server's name and replication servlet to doclist
|
| 1042 |
577
|
berkley
|
doclist.append("<?xml version=\"1.0\"?><replication>");
|
| 1043 |
|
|
doclist.append("<server>").append(util.getOption("server"));
|
| 1044 |
|
|
doclist.append(util.getOption("replicationpath"));
|
| 1045 |
|
|
doclist.append("</server><updates>");
|
| 1046 |
|
|
|
| 1047 |
1292
|
tao
|
// Get correct docid that reside on this server according the requesting
|
| 1048 |
|
|
// server's replicate and data replicate value in xml_replication table
|
| 1049 |
1042
|
tao
|
docsql.append("select docid, rev, doctype from xml_documents ");
|
| 1050 |
1292
|
tao
|
// If the localhost is not a hub to the remote server, only replicate
|
| 1051 |
|
|
// the docid' which home server is local host (server_location =1)
|
| 1052 |
|
|
if (!serverList.getHubValue(server))
|
| 1053 |
1042
|
tao
|
{
|
| 1054 |
|
|
docsql.append("where server_location = 1");
|
| 1055 |
|
|
}
|
| 1056 |
1292
|
tao
|
MetaCatUtil.debugMessage("Doc sql: "+docsql.toString(), 30);
|
| 1057 |
577
|
berkley
|
|
| 1058 |
1292
|
tao
|
// Get any deleted documents
|
| 1059 |
577
|
berkley
|
delsql.append("select distinct docid from ");
|
| 1060 |
|
|
delsql.append("xml_revisions where docid not in (select docid from ");
|
| 1061 |
1042
|
tao
|
delsql.append("xml_documents) ");
|
| 1062 |
1292
|
tao
|
// If the localhost is not a hub to the remote server, only replicate
|
| 1063 |
|
|
// the docid' which home server is local host (server_location =1)
|
| 1064 |
|
|
if (!serverList.getHubValue(server))
|
| 1065 |
1042
|
tao
|
{
|
| 1066 |
|
|
delsql.append("and server_location = 1");
|
| 1067 |
|
|
}
|
| 1068 |
1292
|
tao
|
MetaCatUtil.debugMessage("Deleted sql: "+delsql.toString(), 30);
|
| 1069 |
|
|
|
| 1070 |
|
|
|
| 1071 |
|
|
|
| 1072 |
|
|
// Get docid list of local host
|
| 1073 |
1217
|
tao
|
pstmt = dbConn.prepareStatement(docsql.toString());
|
| 1074 |
577
|
berkley
|
pstmt.execute();
|
| 1075 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1076 |
|
|
boolean tablehasrows = rs.next();
|
| 1077 |
1035
|
tao
|
//If metacat configed to replicate data file
|
| 1078 |
1292
|
tao
|
//if ((util.getOption("replicationsenddata")).equals("on"))
|
| 1079 |
|
|
if (serverList.getDataReplicationValue(server))
|
| 1080 |
577
|
berkley
|
{
|
| 1081 |
1020
|
tao
|
while(tablehasrows)
|
| 1082 |
|
|
{
|
| 1083 |
|
|
String recordDoctype = rs.getString(3);
|
| 1084 |
1035
|
tao
|
Vector packagedoctypes = MetaCatUtil.getOptionList(
|
| 1085 |
|
|
MetaCatUtil.getOption("packagedoctype"));
|
| 1086 |
1292
|
tao
|
//if this is a package file, put it at the end
|
| 1087 |
|
|
//because if a package file is read before all of the files it
|
| 1088 |
|
|
//refers to are loaded then there is an error
|
| 1089 |
1035
|
tao
|
if(!packagedoctypes.contains(recordDoctype))
|
| 1090 |
1292
|
tao
|
{
|
| 1091 |
|
|
//If this is not data file
|
| 1092 |
1035
|
tao
|
if (!recordDoctype.equals("BIN"))
|
| 1093 |
|
|
{
|
| 1094 |
|
|
//for non-data file document
|
| 1095 |
|
|
doclist.append("<updatedDocument>");
|
| 1096 |
|
|
doclist.append("<docid>").append(rs.getString(1));
|
| 1097 |
|
|
doclist.append("</docid><rev>").append(rs.getInt(2));
|
| 1098 |
|
|
doclist.append("</rev>");
|
| 1099 |
|
|
doclist.append("</updatedDocument>");
|
| 1100 |
1292
|
tao
|
}//if
|
| 1101 |
1035
|
tao
|
else
|
| 1102 |
|
|
{
|
| 1103 |
|
|
//for data file document, in datafile attributes
|
| 1104 |
|
|
//we put "datafile" value there
|
| 1105 |
|
|
doclist.append("<updatedDocument>");
|
| 1106 |
|
|
doclist.append("<docid>").append(rs.getString(1));
|
| 1107 |
|
|
doclist.append("</docid><rev>").append(rs.getInt(2));
|
| 1108 |
|
|
doclist.append("</rev>");
|
| 1109 |
|
|
doclist.append("<datafile>");
|
| 1110 |
|
|
doclist.append(MetaCatUtil.getOption("datafileflag"));
|
| 1111 |
|
|
doclist.append("</datafile>");
|
| 1112 |
|
|
doclist.append("</updatedDocument>");
|
| 1113 |
1292
|
tao
|
}//else
|
| 1114 |
|
|
}//if packagedoctpes
|
| 1115 |
1035
|
tao
|
else
|
| 1116 |
|
|
{ //the package files are saved to be put into the xml later.
|
| 1117 |
|
|
Vector v = new Vector();
|
| 1118 |
|
|
v.add(new String(rs.getString(1)));
|
| 1119 |
|
|
v.add(new Integer(rs.getInt(2)));
|
| 1120 |
|
|
packageFiles.add(new Vector(v));
|
| 1121 |
1292
|
tao
|
}//esle
|
| 1122 |
1035
|
tao
|
tablehasrows = rs.next();
|
| 1123 |
|
|
}//while
|
| 1124 |
|
|
}//if
|
| 1125 |
|
|
else //metacat was configured not to send data file
|
| 1126 |
|
|
{
|
| 1127 |
|
|
while(tablehasrows)
|
| 1128 |
|
|
{
|
| 1129 |
|
|
String recordDoctype = rs.getString(3);
|
| 1130 |
1020
|
tao
|
if(!recordDoctype.equals("BIN"))
|
| 1131 |
|
|
{ //don't replicate data files
|
| 1132 |
|
|
Vector packagedoctypes = MetaCatUtil.getOptionList(
|
| 1133 |
887
|
berkley
|
MetaCatUtil.getOption("packagedoctype"));
|
| 1134 |
1020
|
tao
|
if(!packagedoctypes.contains(recordDoctype))
|
| 1135 |
|
|
{ //if this is a package file, put it at the end
|
| 1136 |
|
|
//because if a package file is read before all of the files it
|
| 1137 |
|
|
//refers to are loaded then there is an error
|
| 1138 |
|
|
doclist.append("<updatedDocument>");
|
| 1139 |
|
|
doclist.append("<docid>").append(rs.getString(1));
|
| 1140 |
|
|
doclist.append("</docid><rev>").append(rs.getInt(2));
|
| 1141 |
|
|
doclist.append("</rev>");
|
| 1142 |
|
|
doclist.append("</updatedDocument>");
|
| 1143 |
|
|
}
|
| 1144 |
|
|
else
|
| 1145 |
|
|
{ //the package files are saved to be put into the xml later.
|
| 1146 |
|
|
Vector v = new Vector();
|
| 1147 |
|
|
v.add(new String(rs.getString(1)));
|
| 1148 |
|
|
v.add(new Integer(rs.getInt(2)));
|
| 1149 |
|
|
packageFiles.add(new Vector(v));
|
| 1150 |
|
|
}
|
| 1151 |
|
|
}//if
|
| 1152 |
|
|
tablehasrows = rs.next();
|
| 1153 |
|
|
}//while
|
| 1154 |
1035
|
tao
|
}//else
|
| 1155 |
577
|
berkley
|
|
| 1156 |
1217
|
tao
|
pstmt = dbConn.prepareStatement(delsql.toString());
|
| 1157 |
|
|
//usage count should increas 1
|
| 1158 |
|
|
dbConn.increaseUsageCount(1);
|
| 1159 |
|
|
|
| 1160 |
577
|
berkley
|
pstmt.execute();
|
| 1161 |
|
|
rs = pstmt.getResultSet();
|
| 1162 |
|
|
tablehasrows = rs.next();
|
| 1163 |
|
|
while(tablehasrows)
|
| 1164 |
|
|
{ //handle the deleted documents
|
| 1165 |
|
|
doclist.append("<deletedDocument><docid>").append(rs.getString(1));
|
| 1166 |
|
|
doclist.append("</docid><rev></rev></deletedDocument>");
|
| 1167 |
583
|
berkley
|
//note that rev is always empty for deleted docs
|
| 1168 |
577
|
berkley
|
tablehasrows = rs.next();
|
| 1169 |
|
|
}
|
| 1170 |
|
|
|
| 1171 |
625
|
berkley
|
//now we can put the package files into the xml results
|
| 1172 |
|
|
for(int i=0; i<packageFiles.size(); i++)
|
| 1173 |
|
|
{
|
| 1174 |
|
|
Vector v = (Vector)packageFiles.elementAt(i);
|
| 1175 |
|
|
doclist.append("<updatedDocument>");
|
| 1176 |
|
|
doclist.append("<docid>").append((String)v.elementAt(0));
|
| 1177 |
|
|
doclist.append("</docid><rev>");
|
| 1178 |
|
|
doclist.append(((Integer)v.elementAt(1)).intValue());
|
| 1179 |
|
|
doclist.append("</rev>");
|
| 1180 |
|
|
doclist.append("</updatedDocument>");
|
| 1181 |
|
|
}
|
| 1182 |
|
|
|
| 1183 |
577
|
berkley
|
doclist.append("</updates></replication>");
|
| 1184 |
1498
|
tao
|
MetaCatUtil.debugMessage("doclist: " + doclist.toString(), 40);
|
| 1185 |
667
|
berkley
|
pstmt.close();
|
| 1186 |
1217
|
tao
|
//conn.close();
|
| 1187 |
577
|
berkley
|
response.setContentType("text/xml");
|
| 1188 |
|
|
out.println(doclist.toString());
|
| 1189 |
1014
|
tao
|
|
| 1190 |
577
|
berkley
|
}
|
| 1191 |
|
|
catch(Exception e)
|
| 1192 |
|
|
{
|
| 1193 |
1101
|
tao
|
MetaCatUtil.debugMessage("error in MetacatReplication." +
|
| 1194 |
|
|
"handleupdaterequest: " + e.getMessage(), 30);
|
| 1195 |
|
|
//e.printStackTrace(System.out);
|
| 1196 |
|
|
response.setContentType("text/xml");
|
| 1197 |
1292
|
tao
|
out.println("<error>"+e.getMessage()+"</error>");
|
| 1198 |
577
|
berkley
|
}
|
| 1199 |
1217
|
tao
|
finally
|
| 1200 |
|
|
{
|
| 1201 |
|
|
try
|
| 1202 |
|
|
{
|
| 1203 |
|
|
pstmt.close();
|
| 1204 |
|
|
}//try
|
| 1205 |
|
|
catch (SQLException ee)
|
| 1206 |
|
|
{
|
| 1207 |
|
|
MetaCatUtil.debugMessage("Error in MetacatReplication." +
|
| 1208 |
|
|
"handleUpdaterequest to close pstmt: "+ee.getMessage(), 30);
|
| 1209 |
|
|
}//catch
|
| 1210 |
|
|
finally
|
| 1211 |
|
|
{
|
| 1212 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1213 |
|
|
}//finally
|
| 1214 |
|
|
}//finally
|
| 1215 |
1292
|
tao
|
|
| 1216 |
|
|
}//handlUpdateRequest
|
| 1217 |
577
|
berkley
|
|
| 1218 |
|
|
/**
|
| 1219 |
590
|
berkley
|
* Returns the xml_catalog table encoded in xml
|
| 1220 |
|
|
*/
|
| 1221 |
|
|
public static String getCatalogXML()
|
| 1222 |
|
|
{
|
| 1223 |
|
|
return handleGetCatalogRequest(null, null, null, false);
|
| 1224 |
|
|
}
|
| 1225 |
|
|
|
| 1226 |
|
|
/**
|
| 1227 |
|
|
* Sends the contents of the xml_catalog table encoded in xml
|
| 1228 |
|
|
* The xml format is:
|
| 1229 |
|
|
* <!ELEMENT xml_catalog (row*)>
|
| 1230 |
|
|
* <!ELEMENT row (entry_type, source_doctype, target_doctype, public_id,
|
| 1231 |
|
|
* system_id)>
|
| 1232 |
|
|
* All of the sub elements of row are #PCDATA
|
| 1233 |
|
|
|
| 1234 |
|
|
* If printFlag == false then do not print to out.
|
| 1235 |
|
|
*/
|
| 1236 |
|
|
private static String handleGetCatalogRequest(PrintWriter out,
|
| 1237 |
|
|
Hashtable params,
|
| 1238 |
|
|
HttpServletResponse response,
|
| 1239 |
|
|
boolean printFlag)
|
| 1240 |
|
|
{
|
| 1241 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 1242 |
|
|
int serialNumber = -1;
|
| 1243 |
667
|
berkley
|
PreparedStatement pstmt = null;
|
| 1244 |
590
|
berkley
|
try
|
| 1245 |
683
|
berkley
|
{
|
| 1246 |
1217
|
tao
|
/*conn = MetacatReplication.getDBConnection("MetacatReplication." +
|
| 1247 |
|
|
"handleGetCatalogRequest");*/
|
| 1248 |
|
|
dbConn=DBConnectionPool.
|
| 1249 |
|
|
getDBConnection("MetacatReplication.handleGetCatalogRequest");
|
| 1250 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 1251 |
|
|
pstmt = dbConn.prepareStatement("select entry_type, " +
|
| 1252 |
590
|
berkley
|
"source_doctype, target_doctype, public_id, " +
|
| 1253 |
|
|
"system_id from xml_catalog");
|
| 1254 |
|
|
pstmt.execute();
|
| 1255 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1256 |
|
|
boolean tablehasrows = rs.next();
|
| 1257 |
|
|
StringBuffer sb = new StringBuffer();
|
| 1258 |
|
|
sb.append("<?xml version=\"1.0\"?><xml_catalog>");
|
| 1259 |
|
|
while(tablehasrows)
|
| 1260 |
|
|
{
|
| 1261 |
|
|
sb.append("<row><entry_type>").append(rs.getString(1));
|
| 1262 |
|
|
sb.append("</entry_type><source_doctype>").append(rs.getString(2));
|
| 1263 |
|
|
sb.append("</source_doctype><target_doctype>").append(rs.getString(3));
|
| 1264 |
|
|
sb.append("</target_doctype><public_id>").append(rs.getString(4));
|
| 1265 |
|
|
sb.append("</public_id><system_id>").append(rs.getString(5));
|
| 1266 |
|
|
sb.append("</system_id></row>");
|
| 1267 |
|
|
|
| 1268 |
|
|
tablehasrows = rs.next();
|
| 1269 |
|
|
}
|
| 1270 |
|
|
sb.append("</xml_catalog>");
|
| 1271 |
1217
|
tao
|
//conn.close();
|
| 1272 |
590
|
berkley
|
if(printFlag)
|
| 1273 |
|
|
{
|
| 1274 |
|
|
response.setContentType("text/xml");
|
| 1275 |
|
|
out.println(sb.toString());
|
| 1276 |
|
|
}
|
| 1277 |
667
|
berkley
|
pstmt.close();
|
| 1278 |
590
|
berkley
|
return sb.toString();
|
| 1279 |
|
|
}
|
| 1280 |
|
|
catch(Exception e)
|
| 1281 |
|
|
{
|
| 1282 |
1217
|
tao
|
|
| 1283 |
675
|
berkley
|
System.out.println("error in MetacatReplication.handleGetCatalogRequest:"+
|
| 1284 |
|
|
e.getMessage());
|
| 1285 |
590
|
berkley
|
e.printStackTrace(System.out);
|
| 1286 |
1292
|
tao
|
if(printFlag)
|
| 1287 |
|
|
{
|
| 1288 |
|
|
out.println("<error>"+e.getMessage()+"</error>");
|
| 1289 |
|
|
}
|
| 1290 |
590
|
berkley
|
}
|
| 1291 |
1217
|
tao
|
finally
|
| 1292 |
|
|
{
|
| 1293 |
|
|
try
|
| 1294 |
|
|
{
|
| 1295 |
|
|
pstmt.close();
|
| 1296 |
|
|
}//try
|
| 1297 |
|
|
catch (SQLException ee)
|
| 1298 |
|
|
{
|
| 1299 |
|
|
MetaCatUtil.
|
| 1300 |
|
|
debugMessage("Error in MetacatReplication.handleGetCatalogRequest: "
|
| 1301 |
|
|
+ee.getMessage(), 30);
|
| 1302 |
|
|
}//catch
|
| 1303 |
|
|
finally
|
| 1304 |
|
|
{
|
| 1305 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1306 |
|
|
}//finally
|
| 1307 |
|
|
}//finally
|
| 1308 |
|
|
|
| 1309 |
590
|
berkley
|
return null;
|
| 1310 |
|
|
}
|
| 1311 |
|
|
|
| 1312 |
|
|
/**
|
| 1313 |
568
|
berkley
|
* Sends the current system date to the remote server. Using this action
|
| 1314 |
|
|
* for replication gets rid of any problems with syncronizing clocks
|
| 1315 |
|
|
* because a time specific to a document is always kept on its home server.
|
| 1316 |
|
|
*/
|
| 1317 |
|
|
private void handleGetTimeRequest(PrintWriter out, Hashtable params,
|
| 1318 |
|
|
HttpServletResponse response)
|
| 1319 |
|
|
{
|
| 1320 |
1752
|
tao
|
SimpleDateFormat formatter = new SimpleDateFormat ("MM/dd/yy HH:mm:ss");
|
| 1321 |
568
|
berkley
|
java.util.Date localtime = new java.util.Date();
|
| 1322 |
|
|
String dateString = formatter.format(localtime);
|
| 1323 |
|
|
response.setContentType("text/xml");
|
| 1324 |
|
|
|
| 1325 |
|
|
out.println("<timestamp>" + dateString + "</timestamp>");
|
| 1326 |
|
|
}
|
| 1327 |
|
|
|
| 1328 |
|
|
/**
|
| 1329 |
583
|
berkley
|
* this method handles the timeout for a file lock. when a lock is
|
| 1330 |
|
|
* granted it is granted for 30 seconds. When this thread runs out
|
| 1331 |
|
|
* it deletes the docid from the queue, thus eliminating the lock.
|
| 1332 |
561
|
berkley
|
*/
|
| 1333 |
|
|
public void run()
|
| 1334 |
|
|
{
|
| 1335 |
|
|
try
|
| 1336 |
|
|
{
|
| 1337 |
590
|
berkley
|
MetaCatUtil.debugMessage("thread started for docid: " +
|
| 1338 |
1097
|
tao
|
(String)fileLocks.elementAt(0), 45);
|
| 1339 |
|
|
|
| 1340 |
561
|
berkley
|
Thread.sleep(30000); //the lock will expire in 30 seconds
|
| 1341 |
590
|
berkley
|
MetaCatUtil.debugMessage("thread for docid: " +
|
| 1342 |
595
|
berkley
|
(String)fileLocks.elementAt(fileLocks.size() - 1) +
|
| 1343 |
1498
|
tao
|
" exiting.", 45);
|
| 1344 |
1097
|
tao
|
|
| 1345 |
561
|
berkley
|
fileLocks.remove(fileLocks.size() - 1);
|
| 1346 |
568
|
berkley
|
//fileLocks is treated as a FIFO queue. If there are more than one lock
|
| 1347 |
561
|
berkley
|
//in the vector, the first one inserted will be removed.
|
| 1348 |
|
|
}
|
| 1349 |
|
|
catch(Exception e)
|
| 1350 |
|
|
{
|
| 1351 |
1097
|
tao
|
MetaCatUtil.debugMessage("error in file lock thread from " +
|
| 1352 |
1498
|
tao
|
"MetacatReplication.run: " + e.getMessage(), 30);
|
| 1353 |
561
|
berkley
|
}
|
| 1354 |
|
|
}
|
| 1355 |
|
|
|
| 1356 |
|
|
/**
|
| 1357 |
|
|
* Returns the name of a server given a serverCode
|
| 1358 |
|
|
* @param serverCode the serverid of the server
|
| 1359 |
|
|
* @return the servername or null if the specified serverCode does not
|
| 1360 |
|
|
* exist.
|
| 1361 |
|
|
*/
|
| 1362 |
1292
|
tao
|
public static String getServerNameForServerCode(int serverCode)
|
| 1363 |
561
|
berkley
|
{
|
| 1364 |
569
|
berkley
|
//System.out.println("serverid: " + serverCode);
|
| 1365 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 1366 |
|
|
int serialNumber = -1;
|
| 1367 |
|
|
PreparedStatement pstmt = null;
|
| 1368 |
561
|
berkley
|
try
|
| 1369 |
|
|
{
|
| 1370 |
1217
|
tao
|
dbConn=DBConnectionPool.
|
| 1371 |
|
|
getDBConnection("MetacatReplication.getServer");
|
| 1372 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 1373 |
569
|
berkley
|
String sql = new String("select server from " +
|
| 1374 |
561
|
berkley
|
"xml_replication where serverid = " +
|
| 1375 |
|
|
serverCode);
|
| 1376 |
1217
|
tao
|
pstmt = dbConn.prepareStatement(sql);
|
| 1377 |
569
|
berkley
|
//System.out.println("getserver sql: " + sql);
|
| 1378 |
561
|
berkley
|
pstmt.execute();
|
| 1379 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1380 |
|
|
boolean tablehasrows = rs.next();
|
| 1381 |
|
|
if(tablehasrows)
|
| 1382 |
|
|
{
|
| 1383 |
569
|
berkley
|
//System.out.println("server: " + rs.getString(1));
|
| 1384 |
561
|
berkley
|
return rs.getString(1);
|
| 1385 |
|
|
}
|
| 1386 |
1217
|
tao
|
|
| 1387 |
|
|
//conn.close();
|
| 1388 |
561
|
berkley
|
}
|
| 1389 |
|
|
catch(Exception e)
|
| 1390 |
|
|
{
|
| 1391 |
|
|
System.out.println("Error in MetacatReplication.getServer: " +
|
| 1392 |
|
|
e.getMessage());
|
| 1393 |
|
|
}
|
| 1394 |
1217
|
tao
|
finally
|
| 1395 |
|
|
{
|
| 1396 |
|
|
try
|
| 1397 |
|
|
{
|
| 1398 |
|
|
pstmt.close();
|
| 1399 |
|
|
}//try
|
| 1400 |
|
|
catch (SQLException ee)
|
| 1401 |
|
|
{
|
| 1402 |
|
|
MetaCatUtil.debugMessage("Error in MetacactReplication.getserver: "+
|
| 1403 |
|
|
ee.getMessage(), 30);
|
| 1404 |
|
|
}//catch
|
| 1405 |
|
|
finally
|
| 1406 |
|
|
{
|
| 1407 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1408 |
|
|
}//fianlly
|
| 1409 |
|
|
}//finally
|
| 1410 |
|
|
|
| 1411 |
|
|
|
| 1412 |
|
|
|
| 1413 |
561
|
berkley
|
return null;
|
| 1414 |
|
|
//return null if the server does not exist
|
| 1415 |
|
|
}
|
| 1416 |
569
|
berkley
|
|
| 1417 |
|
|
/**
|
| 1418 |
|
|
* Returns a server code given a server name
|
| 1419 |
|
|
* @param server the name of the server
|
| 1420 |
|
|
* @return integer > 0 representing the code of the server, 0 if the server
|
| 1421 |
|
|
* does not exist.
|
| 1422 |
|
|
*/
|
| 1423 |
1292
|
tao
|
public static int getServerCodeForServerName(String server) throws Exception
|
| 1424 |
569
|
berkley
|
{
|
| 1425 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 1426 |
|
|
int serialNumber = -1;
|
| 1427 |
667
|
berkley
|
PreparedStatement pstmt = null;
|
| 1428 |
837
|
bojilova
|
int serverCode = 0;
|
| 1429 |
|
|
|
| 1430 |
|
|
try {
|
| 1431 |
|
|
|
| 1432 |
1217
|
tao
|
//conn = util.openDBConnection();
|
| 1433 |
|
|
dbConn=DBConnectionPool.
|
| 1434 |
|
|
getDBConnection("MetacatReplication.getServerCode");
|
| 1435 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 1436 |
|
|
pstmt = dbConn.prepareStatement("SELECT serverid FROM xml_replication " +
|
| 1437 |
837
|
bojilova
|
"WHERE server LIKE '" + server + "'");
|
| 1438 |
569
|
berkley
|
pstmt.execute();
|
| 1439 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1440 |
|
|
boolean tablehasrows = rs.next();
|
| 1441 |
837
|
bojilova
|
if ( tablehasrows ) {
|
| 1442 |
|
|
serverCode = rs.getInt(1);
|
| 1443 |
667
|
berkley
|
pstmt.close();
|
| 1444 |
1217
|
tao
|
//conn.close();
|
| 1445 |
837
|
bojilova
|
return serverCode;
|
| 1446 |
569
|
berkley
|
}
|
| 1447 |
837
|
bojilova
|
|
| 1448 |
|
|
} catch(Exception e) {
|
| 1449 |
|
|
throw e;
|
| 1450 |
|
|
|
| 1451 |
|
|
} finally {
|
| 1452 |
1217
|
tao
|
try
|
| 1453 |
|
|
{
|
| 1454 |
667
|
berkley
|
pstmt.close();
|
| 1455 |
1217
|
tao
|
//conn.close();
|
| 1456 |
|
|
}//try
|
| 1457 |
|
|
catch(Exception ee)
|
| 1458 |
|
|
{
|
| 1459 |
|
|
MetaCatUtil.debugMessage("Error in MetacatReplicatio.getServerCode: "
|
| 1460 |
|
|
+ee.getMessage(), 30);
|
| 1461 |
|
|
|
| 1462 |
|
|
}//catch
|
| 1463 |
|
|
finally
|
| 1464 |
|
|
{
|
| 1465 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1466 |
|
|
}//finally
|
| 1467 |
|
|
}//finally
|
| 1468 |
837
|
bojilova
|
|
| 1469 |
|
|
return serverCode;
|
| 1470 |
569
|
berkley
|
}
|
| 1471 |
|
|
|
| 1472 |
|
|
/**
|
| 1473 |
1292
|
tao
|
* Method to get a host server information for given docid
|
| 1474 |
|
|
* @param conn a connection to the database
|
| 1475 |
|
|
*/
|
| 1476 |
|
|
public static Hashtable getHomeServerInfoForDocId(String docId)
|
| 1477 |
|
|
{
|
| 1478 |
|
|
Hashtable sl = new Hashtable();
|
| 1479 |
|
|
DBConnection dbConn = null;
|
| 1480 |
|
|
int serialNumber = -1;
|
| 1481 |
|
|
//MetaCatUtil ut=new MetaCatUtil();
|
| 1482 |
|
|
docId=MetaCatUtil.getDocIdFromString(docId);
|
| 1483 |
|
|
PreparedStatement pstmt=null;
|
| 1484 |
|
|
int serverLocation;
|
| 1485 |
|
|
try
|
| 1486 |
|
|
{
|
| 1487 |
|
|
//get conection
|
| 1488 |
|
|
dbConn=DBConnectionPool.
|
| 1489 |
|
|
getDBConnection("ReplicationHandler.getHomeServer");
|
| 1490 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 1491 |
|
|
//get a server location from xml_document table
|
| 1492 |
|
|
pstmt=dbConn.prepareStatement("select server_location from xml_documents "
|
| 1493 |
|
|
+"where docid = ?");
|
| 1494 |
|
|
pstmt.setString(1, docId);
|
| 1495 |
|
|
pstmt.execute();
|
| 1496 |
|
|
ResultSet serverName = pstmt.getResultSet();
|
| 1497 |
|
|
//get a server location
|
| 1498 |
|
|
if(serverName.next())
|
| 1499 |
|
|
{
|
| 1500 |
|
|
serverLocation=serverName.getInt(1);
|
| 1501 |
|
|
pstmt.close();
|
| 1502 |
|
|
}
|
| 1503 |
|
|
else
|
| 1504 |
|
|
{
|
| 1505 |
|
|
pstmt.close();
|
| 1506 |
|
|
//ut.returnConnection(conn);
|
| 1507 |
|
|
return null;
|
| 1508 |
|
|
}
|
| 1509 |
|
|
pstmt=dbConn.prepareStatement("select server, last_checked, replicate " +
|
| 1510 |
|
|
"from xml_replication where serverid = ?");
|
| 1511 |
|
|
//increase usage count
|
| 1512 |
|
|
dbConn.increaseUsageCount(1);
|
| 1513 |
|
|
pstmt.setInt(1, serverLocation);
|
| 1514 |
|
|
pstmt.execute();
|
| 1515 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1516 |
|
|
boolean tableHasRows = rs.next();
|
| 1517 |
|
|
if (tableHasRows)
|
| 1518 |
|
|
{
|
| 1519 |
|
|
|
| 1520 |
|
|
String server = rs.getString(1);
|
| 1521 |
|
|
String last_checked = rs.getString(2);
|
| 1522 |
|
|
if(!server.equals("localhost"))
|
| 1523 |
|
|
{
|
| 1524 |
|
|
sl.put(server, last_checked);
|
| 1525 |
|
|
}
|
| 1526 |
|
|
|
| 1527 |
|
|
}
|
| 1528 |
|
|
else
|
| 1529 |
|
|
{
|
| 1530 |
|
|
pstmt.close();
|
| 1531 |
|
|
//ut.returnConnection(conn);
|
| 1532 |
|
|
return null;
|
| 1533 |
|
|
}
|
| 1534 |
|
|
pstmt.close();
|
| 1535 |
|
|
}
|
| 1536 |
|
|
catch(Exception e)
|
| 1537 |
|
|
{
|
| 1538 |
|
|
System.out.println("error in replicationHandler.getHomeServer(): " +
|
| 1539 |
|
|
e.getMessage());
|
| 1540 |
|
|
}
|
| 1541 |
|
|
finally
|
| 1542 |
|
|
{
|
| 1543 |
|
|
try
|
| 1544 |
|
|
{
|
| 1545 |
|
|
pstmt.close();
|
| 1546 |
|
|
//ut.returnConnection(conn);
|
| 1547 |
|
|
}
|
| 1548 |
|
|
catch (Exception ee)
|
| 1549 |
|
|
{
|
| 1550 |
|
|
MetaCatUtil.debugMessage("Eror irn rplicationHandler.getHomeServer() "+
|
| 1551 |
|
|
"to close pstmt: "+ee.getMessage(), 30);
|
| 1552 |
|
|
}
|
| 1553 |
|
|
finally
|
| 1554 |
|
|
{
|
| 1555 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1556 |
|
|
}
|
| 1557 |
|
|
|
| 1558 |
|
|
}//finally
|
| 1559 |
|
|
return sl;
|
| 1560 |
|
|
}
|
| 1561 |
|
|
|
| 1562 |
|
|
/**
|
| 1563 |
|
|
* Returns a home server location given a accnum
|
| 1564 |
|
|
* @param accNum , given accNum for a document
|
| 1565 |
|
|
*
|
| 1566 |
|
|
*/
|
| 1567 |
|
|
public static int getHomeServerCodeForDocId(String accNum) throws Exception
|
| 1568 |
|
|
{
|
| 1569 |
|
|
DBConnection dbConn = null;
|
| 1570 |
|
|
int serialNumber = -1;
|
| 1571 |
|
|
PreparedStatement pstmt = null;
|
| 1572 |
|
|
int serverCode = 1;
|
| 1573 |
|
|
//MetaCatUtil ut = new MetaCatUtil();
|
| 1574 |
|
|
String docId=MetaCatUtil.getDocIdFromString(accNum);
|
| 1575 |
|
|
|
| 1576 |
|
|
try
|
| 1577 |
|
|
{
|
| 1578 |
|
|
|
| 1579 |
|
|
// Get DBConnection
|
| 1580 |
|
|
dbConn=DBConnectionPool.
|
| 1581 |
|
|
getDBConnection("ReplicationHandler.getServerLocation");
|
| 1582 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 1583 |
|
|
pstmt=dbConn.prepareStatement("SELECT server_location FROM xml_documents "
|
| 1584 |
|
|
+ "WHERE docid LIKE '" + docId + "'");
|
| 1585 |
|
|
pstmt.execute();
|
| 1586 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1587 |
|
|
boolean tablehasrows = rs.next();
|
| 1588 |
|
|
//If a document is find, return the server location for it
|
| 1589 |
|
|
if ( tablehasrows )
|
| 1590 |
|
|
{
|
| 1591 |
|
|
serverCode = rs.getInt(1);
|
| 1592 |
|
|
pstmt.close();
|
| 1593 |
|
|
//conn.close();
|
| 1594 |
|
|
return serverCode;
|
| 1595 |
|
|
}
|
| 1596 |
|
|
//if couldn't find in xml_documents table, we think server code is 1
|
| 1597 |
|
|
//(this is new document)
|
| 1598 |
|
|
else
|
| 1599 |
|
|
{
|
| 1600 |
|
|
pstmt.close();
|
| 1601 |
|
|
//conn.close();
|
| 1602 |
|
|
return serverCode;
|
| 1603 |
|
|
}
|
| 1604 |
|
|
|
| 1605 |
|
|
}
|
| 1606 |
|
|
catch(Exception e)
|
| 1607 |
|
|
{
|
| 1608 |
|
|
|
| 1609 |
|
|
throw e;
|
| 1610 |
|
|
|
| 1611 |
|
|
}
|
| 1612 |
|
|
finally
|
| 1613 |
|
|
{
|
| 1614 |
|
|
try
|
| 1615 |
|
|
{
|
| 1616 |
|
|
pstmt.close();
|
| 1617 |
|
|
//conn.close();
|
| 1618 |
|
|
|
| 1619 |
|
|
}
|
| 1620 |
|
|
catch(Exception ee)
|
| 1621 |
|
|
{
|
| 1622 |
|
|
MetaCatUtil.debugMessage("Erorr in Replication.getServerLocation "+
|
| 1623 |
|
|
"to close pstmt"+ee.getMessage(), 30);
|
| 1624 |
|
|
}
|
| 1625 |
|
|
finally
|
| 1626 |
|
|
{
|
| 1627 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1628 |
|
|
}//finally
|
| 1629 |
|
|
}//finally
|
| 1630 |
|
|
//return serverCode;
|
| 1631 |
|
|
}
|
| 1632 |
|
|
|
| 1633 |
|
|
|
| 1634 |
|
|
|
| 1635 |
|
|
/**
|
| 1636 |
569
|
berkley
|
* This method returns the content of a url
|
| 1637 |
|
|
* @param u the url to return the content from
|
| 1638 |
|
|
* @return a string representing the content of the url
|
| 1639 |
|
|
* @throws java.io.IOException
|
| 1640 |
|
|
*/
|
| 1641 |
|
|
public static String getURLContent(URL u) throws java.io.IOException
|
| 1642 |
|
|
{
|
| 1643 |
|
|
char istreamChar;
|
| 1644 |
|
|
int istreamInt;
|
| 1645 |
1606
|
tao
|
MetaCatUtil.debugMessage("Before open the stream"+u.toString(), 50);
|
| 1646 |
|
|
InputStream input = u.openStream();
|
| 1647 |
|
|
MetaCatUtil.debugMessage("Afetr open the stream"+u.toString(), 50);
|
| 1648 |
|
|
InputStreamReader istream = new InputStreamReader(input);
|
| 1649 |
569
|
berkley
|
StringBuffer serverResponse = new StringBuffer();
|
| 1650 |
|
|
while((istreamInt = istream.read()) != -1)
|
| 1651 |
|
|
{
|
| 1652 |
|
|
istreamChar = (char)istreamInt;
|
| 1653 |
|
|
serverResponse.append(istreamChar);
|
| 1654 |
|
|
}
|
| 1655 |
1606
|
tao
|
istream.close();
|
| 1656 |
|
|
input.close();
|
| 1657 |
|
|
|
| 1658 |
569
|
berkley
|
return serverResponse.toString();
|
| 1659 |
|
|
}
|
| 1660 |
584
|
berkley
|
|
| 1661 |
|
|
/**
|
| 1662 |
|
|
* Method for writing replication messages to a log file specified in
|
| 1663 |
|
|
* metacat.properties
|
| 1664 |
|
|
*/
|
| 1665 |
|
|
public static void replLog(String message)
|
| 1666 |
|
|
{
|
| 1667 |
|
|
try
|
| 1668 |
|
|
{
|
| 1669 |
|
|
FileOutputStream fos = new FileOutputStream(
|
| 1670 |
|
|
util.getOption("replicationlog"), true);
|
| 1671 |
|
|
PrintWriter pw = new PrintWriter(fos);
|
| 1672 |
|
|
SimpleDateFormat formatter = new SimpleDateFormat ("yy-MM-dd HH:mm:ss");
|
| 1673 |
|
|
java.util.Date localtime = new java.util.Date();
|
| 1674 |
|
|
String dateString = formatter.format(localtime);
|
| 1675 |
|
|
dateString += " :: " + message;
|
| 1676 |
|
|
//time stamp each entry
|
| 1677 |
|
|
pw.println(dateString);
|
| 1678 |
|
|
pw.flush();
|
| 1679 |
|
|
}
|
| 1680 |
|
|
catch(Exception e)
|
| 1681 |
|
|
{
|
| 1682 |
675
|
berkley
|
System.out.println("error writing to replication log from " +
|
| 1683 |
|
|
"MetacatReplication.replLog: " + e.getMessage());
|
| 1684 |
595
|
berkley
|
//e.printStackTrace(System.out);
|
| 1685 |
584
|
berkley
|
}
|
| 1686 |
|
|
}
|
| 1687 |
629
|
berkley
|
|
| 1688 |
|
|
/**
|
| 1689 |
1583
|
tao
|
* Method for writing replication messages to a log file specified in
|
| 1690 |
|
|
* metacat.properties
|
| 1691 |
|
|
*/
|
| 1692 |
|
|
public static void replErrorLog(String message)
|
| 1693 |
|
|
{
|
| 1694 |
|
|
try
|
| 1695 |
|
|
{
|
| 1696 |
|
|
FileOutputStream fos = new FileOutputStream(
|
| 1697 |
|
|
util.getOption("replicationerrorlog"), true);
|
| 1698 |
|
|
PrintWriter pw = new PrintWriter(fos);
|
| 1699 |
|
|
SimpleDateFormat formatter = new SimpleDateFormat ("yy-MM-dd HH:mm:ss");
|
| 1700 |
|
|
java.util.Date localtime = new java.util.Date();
|
| 1701 |
|
|
String dateString = formatter.format(localtime);
|
| 1702 |
|
|
dateString += " :: " + message;
|
| 1703 |
|
|
//time stamp each entry
|
| 1704 |
|
|
pw.println(dateString);
|
| 1705 |
|
|
pw.flush();
|
| 1706 |
|
|
}
|
| 1707 |
|
|
catch(Exception e)
|
| 1708 |
|
|
{
|
| 1709 |
|
|
System.out.println("error writing to replication log from " +
|
| 1710 |
|
|
"MetacatReplication.replLog: " + e.getMessage());
|
| 1711 |
|
|
//e.printStackTrace(System.out);
|
| 1712 |
|
|
}
|
| 1713 |
|
|
}
|
| 1714 |
|
|
|
| 1715 |
|
|
/**
|
| 1716 |
629
|
berkley
|
* Returns true if the replicate field for server in xml_replication is 1.
|
| 1717 |
|
|
* Returns false otherwise
|
| 1718 |
|
|
*/
|
| 1719 |
|
|
public static boolean replToServer(String server)
|
| 1720 |
|
|
{
|
| 1721 |
1217
|
tao
|
DBConnection dbConn = null;
|
| 1722 |
|
|
int serialNumber = -1;
|
| 1723 |
667
|
berkley
|
PreparedStatement pstmt = null;
|
| 1724 |
629
|
berkley
|
try
|
| 1725 |
|
|
{
|
| 1726 |
1217
|
tao
|
dbConn=DBConnectionPool.
|
| 1727 |
|
|
getDBConnection("MetacatReplication.repltoServer");
|
| 1728 |
|
|
serialNumber=dbConn.getCheckOutSerialNumber();
|
| 1729 |
|
|
pstmt = dbConn.prepareStatement("select replicate from " +
|
| 1730 |
667
|
berkley
|
"xml_replication where server like '" +
|
| 1731 |
|
|
server + "'");
|
| 1732 |
629
|
berkley
|
pstmt.execute();
|
| 1733 |
|
|
ResultSet rs = pstmt.getResultSet();
|
| 1734 |
|
|
boolean tablehasrows = rs.next();
|
| 1735 |
|
|
if(tablehasrows)
|
| 1736 |
|
|
{
|
| 1737 |
|
|
int i = rs.getInt(1);
|
| 1738 |
|
|
if(i == 1)
|
| 1739 |
|
|
{
|
| 1740 |
667
|
berkley
|
pstmt.close();
|
| 1741 |
1217
|
tao
|
//conn.close();
|
| 1742 |
629
|
berkley
|
return true;
|
| 1743 |
|
|
}
|
| 1744 |
|
|
else
|
| 1745 |
|
|
{
|
| 1746 |
667
|
berkley
|
pstmt.close();
|
| 1747 |
1217
|
tao
|
//conn.close();
|
| 1748 |
629
|
berkley
|
return false;
|
| 1749 |
|
|
}
|
| 1750 |
|
|
}
|
| 1751 |
|
|
}
|
| 1752 |
|
|
catch(Exception e)
|
| 1753 |
|
|
{
|
| 1754 |
675
|
berkley
|
System.out.println("error in MetacatReplication.replToServer: " +
|
| 1755 |
|
|
e.getMessage());
|
| 1756 |
629
|
berkley
|
}
|
| 1757 |
667
|
berkley
|
finally
|
| 1758 |
|
|
{
|
| 1759 |
|
|
try
|
| 1760 |
|
|
{
|
| 1761 |
|
|
pstmt.close();
|
| 1762 |
1217
|
tao
|
//conn.close();
|
| 1763 |
|
|
}//try
|
| 1764 |
667
|
berkley
|
catch(Exception ee)
|
| 1765 |
1217
|
tao
|
{
|
| 1766 |
|
|
MetaCatUtil.debugMessage("Error in MetacatReplication.replToServer: "
|
| 1767 |
|
|
+ee.getMessage(), 30);
|
| 1768 |
|
|
}//catch
|
| 1769 |
|
|
finally
|
| 1770 |
|
|
{
|
| 1771 |
|
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
| 1772 |
|
|
}//finally
|
| 1773 |
|
|
}//finally
|
| 1774 |
629
|
berkley
|
return false;
|
| 1775 |
|
|
//the default if this server does not exist is to not replicate to it.
|
| 1776 |
|
|
}
|
| 1777 |
683
|
berkley
|
|
| 1778 |
1217
|
tao
|
|
| 1779 |
522
|
berkley
|
}
|