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/**
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* '$RCSfile$'
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* Purpose: A Class that implements system utility methods
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* Copyright: 2008 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Michael Daigle
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*
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* '$Author: daigle $'
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* '$Date: 2009-02-17 09:28:11 -0800 (Tue, 17 Feb 2009) $'
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* '$Revision: 4805 $'
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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.util;
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import java.io.IOException;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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import org.apache.log4j.Logger;
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import edu.ucsb.nceas.metacat.MetaCatVersion;
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import edu.ucsb.nceas.metacat.service.PropertyService;
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import edu.ucsb.nceas.metacat.service.ServiceException;
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import edu.ucsb.nceas.metacat.service.ServiceService;
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import edu.ucsb.nceas.utilities.FileUtil;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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public class SystemUtil {
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private static Logger logMetacat = Logger.getLogger(SystemUtil.class);
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private static String METACAT_SERVLET = "metacat";
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private static int OS_CLASS = 0;
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// Class of OS. If we need more granularity, we should create a version
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// list and access it separately.
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public static int WIN_OS = 1;
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public static int LINUX_OS = 2;
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public static int MAC_OS = 3;
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public static int OTHER_OS = 4;
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/**
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* private constructor - all methods are static so there is no no need to
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* instantiate.
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*/
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private SystemUtil() {}
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/**
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* Get the OS for this system.
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* @return an integer representing the class of OS. Possibilities are:
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* WIN_OS = 1;
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* LINUX_OS = 2;
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* MAC_OS = 3;
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* OTHER_OS = 4;
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*/
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public static int getOsClass() {
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if (OS_CLASS > 0) {
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return OS_CLASS;
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}
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String osName = System.getProperty("os.name");
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if (osName.startsWith("Windows")) {
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OS_CLASS = WIN_OS;
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} else if (osName.startsWith("Linux")) {
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OS_CLASS = LINUX_OS;
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} else if (osName.startsWith("Mac")) {
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OS_CLASS = MAC_OS;
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} else if (osName.startsWith("Mac")) {
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OS_CLASS = OTHER_OS;
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}
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return OS_CLASS;
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}
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/**
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* Attempt to discover the server name. The name is retrieved from the http
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* servlet request. This is used by configuration routines before the port
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* has been populated in metacat.properties. it is possible the port that
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* the user configures might be different than the name we get here. You
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* should use getServerPort() instead of this method whenever possible.
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*
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* @param request
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* the http servlet request we will use to find the server name
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*
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* @return a string holding the server name
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*/
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public static String discoverServerName(HttpServletRequest request) {
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String serverName = request.getServerName();
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return serverName;
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}
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/**
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* Attempt to discover the server port. The port is retrieved from the http
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* servlet request. This is used by configuration routines before the port
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* has been populated in metacat.properties. it is possible the port that
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* the user configures might be different than the port we get here. You
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* should use getServerPort() instead of this method whenever possible.
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*
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* @param request
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* the http servlet request we will use to find the server port
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*
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* @return a string holding the server port
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*/
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public static String discoverServerPort(HttpServletRequest request) {
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return Integer.toString(request.getServerPort());
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}
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/**
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* Attempt to discover the server ssl port. The ssl port is assumed using
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* the standard port. This is used by configuration routines before the port
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* has been populated in metacat.properties. it is possible the prot that
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* the user configures might be different than the port we get here. You
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* should use getServerSSLPort() instead of this method whenever possible.
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*
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* @param request
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* the http servlet request we will use to find the server port
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*
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* @return a string holding the server ssl port
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*/
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public static String discoverServerSSLPort(HttpServletRequest request) {
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String serverPort = discoverServerPort(request);
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if (serverPort.length() == 4 && serverPort.charAt(0) == '8') {
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return "8443";
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}
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return "443";
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}
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/**
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* Get the server URL which is made up of the server name + : + the http
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* port number. Note that if the port is 80, it is left off.
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*
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* @return string holding the server URL
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*/
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public static String getServerURL() throws PropertyNotFoundException {
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String ServerURL = "http://" + PropertyService.getProperty("server.name");
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String httpPort = PropertyService.getProperty("server.httpPort");
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if (!httpPort.equals("80")) {
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ServerURL += ":" + httpPort;
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}
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return ServerURL;
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}
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/**
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* Get the secure server URL which is made up of the server name + : + the
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* https port number. Note that if the port is 443, it is left off.
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*
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* @return string holding the server URL
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*/
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public static String getSecureServerURL() throws PropertyNotFoundException {
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String ServerURL = "https://" + getSecureServer();
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return ServerURL;
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}
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/**
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* Get the secure server which is made up of the server name + : + the
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* https port number. Note that if the port is 443, it is left off.
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* NOTE: does NOT include "https://"
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* @see getSecureServerURL()
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*
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* @return string holding the secure server
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*/
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public static String getSecureServer() throws PropertyNotFoundException {
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String server = PropertyService.getProperty("server.name");
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String httpPort = PropertyService.getProperty("server.httpSSLPort");
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if (!httpPort.equals("443")) {
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server = server + ":" + httpPort;
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}
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return server;
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}
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/**
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* Get the CGI URL which is made up of the server URL + file separator + the
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* CGI directory
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*
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* @return string holding the server URL
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*/
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public static String getCGI_URL() throws PropertyNotFoundException{
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return getContextURL()
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+ PropertyService.getProperty("application.cgiDir");
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}
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/**
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* Get the server URL with the context. This is made up of the server URL +
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* file separator + the context
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*
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* @return string holding the server URL with context
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*/
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public static String getContextURL() throws PropertyNotFoundException {
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return getServerURL() + "/"
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+ PropertyService.getProperty("application.context");
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}
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/**
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* Get the servlet URL. This is made up of the server URL with context +
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* file separator + the metacat servlet name
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*
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* @return string holding the servlet URL
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*/
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public static String getServletURL() throws PropertyNotFoundException {
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return getContextURL() + "/" + METACAT_SERVLET;
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}
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/**
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* Get the style skins URL. This is made up of the server URL with context +
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* file separator + "style" + file separator + "skins"
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*
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* @return string holding the style skins URL
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*/
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public static String getStyleSkinsURL() throws PropertyNotFoundException {
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return getContextURL() + "/" + "style" + "/" + "skins";
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}
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/**
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* Get the style common URL. This is made up of the server URL with context +
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* file separator + "style" + file separator + "common"
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*
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* @return string holding the style common URL
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*/
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public static String getStyleCommonURL() throws PropertyNotFoundException {
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return getContextURL() + "/" + "style" + "/" + "common";
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}
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/**
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* Get the metacat version by getting the string representation from
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* metacat.properties and instantiating a MetaCatVersion object.
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* The info is set in build.properties and then populated into metacat.properties
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* at build time using Ant token replacement.
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*
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* @return a MetaCatVersion object holding metacat version information
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*/
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public static MetaCatVersion getMetacatVersion() throws PropertyNotFoundException {
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String metacatVersionString =
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PropertyService.getProperty("application.metacatVersion");
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return new MetaCatVersion(metacatVersionString);
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}
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/**
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* Gets a string that holds some description about the release. Typically this is
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* used during release candidates for display purposes and might hold something
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* like "Release Candidate 1". Normally it is empty for final production release.
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* The info is set in build.properties and then populated into metacat.properties
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* at build time using Ant token replacement.
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*
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* @return a MetaCatVersion object holding metacat version information
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*/
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public static String getMetacatReleaseInfo() throws PropertyNotFoundException {
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return PropertyService.getProperty("application.metacatReleaseInfo");
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}
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/**
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* Get the context directory. This is made up of the deployment directory + file
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* separator + context
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*
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* @return string holding the context directory
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*/
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public static String getContextDir() throws PropertyNotFoundException {
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return PropertyService.getProperty("application.deployDir") + FileUtil.getFS()
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+ PropertyService.getProperty("application.context");
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}
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/**
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* Attempt to discover the context for this application. This is a best
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* guess scenario. It is used by configuration routines before the context
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* has been populated in metacat.properties. You should always use
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* getApplicationContext() instead of this method if possible.
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*
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* @param servletContext
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* the servlet context we will use to find the application context
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*
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* @return a string holding the context
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*/
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public static String discoverApplicationContext(ServletContext servletContext) {
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String applicationContext = "";
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String realPath = servletContext.getRealPath("/");
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if (realPath.charAt(realPath.length() - 1) == '/') {
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realPath = realPath.substring(0, realPath.length() - 1);
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}
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int lastSlashIndex = realPath.lastIndexOf('/');
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if (lastSlashIndex != -1) {
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applicationContext = realPath.substring(lastSlashIndex + 1);
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}
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logMetacat.debug("application context: " + applicationContext);
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return applicationContext;
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}
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310
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/**
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* Gets the stored backup location. This location is held in a file at
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* <user_home>/.<application_context>/backup-location
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*
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* @return a string holding the backup location. Null if none could be found.
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*/
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public static String getStoredBackupDir() throws UtilException {
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317
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String applicationContext = null;
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try {
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applicationContext = ServiceService.getRealApplicationContext();
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// Check if there is a file at
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// <user_home>/<application_context>/backup-location. If so, it
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// should contain one line that is a file that points to a writable
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// directory. If that is true, use that value as the backup dir.
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String storedBackupFileLoc = getUserHomeDir() + FileUtil.getFS() + "."
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+ applicationContext + FileUtil.getFS() + "backup-location";
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if (FileUtil.getFileStatus(storedBackupFileLoc) >= FileUtil.EXISTS_READABLE) {
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String storedBackupDirLoc = FileUtil
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.readFileToString(storedBackupFileLoc);
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if (FileUtil.isDirectory(storedBackupDirLoc)
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&& FileUtil.getFileStatus(storedBackupDirLoc) > FileUtil.EXISTS_READABLE) {
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return storedBackupDirLoc;
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}
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}
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} catch (IOException ioe) {
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logMetacat.warn("I/O problem finding backup location: " + ioe.getMessage());
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} catch (ServiceException se) {
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logMetacat.warn("Could not get real application context: " + se.getMessage());
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}
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return null;
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340
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}
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341
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342
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public static void writeStoredBackupFile(String backupPath) throws UtilException {
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343
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String applicationContext = null;
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344
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try {
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applicationContext = ServiceService.getRealApplicationContext();
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346
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// Write the backup path to
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// <user_home>/.<application_context>/backup-location.
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String storedBackupFileDir = getUserHomeDir() + FileUtil.getFS() + "." + applicationContext;
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String storedBackupFileLoc = storedBackupFileDir + FileUtil.getFS() + "backup-location";
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350
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if (!FileUtil.isDirectory(storedBackupFileDir)) {
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FileUtil.createDirectory(storedBackupFileDir);
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}
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if (FileUtil.getFileStatus(storedBackupFileLoc) == FileUtil.DOES_NOT_EXIST) {
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FileUtil.createFile(storedBackupFileLoc);
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}
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if (FileUtil.getFileStatus(storedBackupFileLoc) < FileUtil.EXISTS_READ_WRITABLE) {
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throw new UtilException("Stored backup location file is not writable: " + storedBackupFileLoc);
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358
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}
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359
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FileUtil.writeFile(storedBackupFileLoc, backupPath);
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361
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362
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} catch (IOException ioe) {
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363
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logMetacat.warn("I/O proplem finding backup location: " + ioe.getMessage());
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364
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} catch (ServiceException se) {
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365
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logMetacat.warn("Could not get real application context: " + se.getMessage());
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366
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}
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367
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}
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368
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369
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/**
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370
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* Attempt to discover the external (to the metacat installation)
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371
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* directory where metacat will hold backup files. This functionality
|
|
372
|
* is used to populate the configuration utility initially. The user
|
|
373
|
* can change the directory manually, so you can't rely on this method
|
|
374
|
* to give you the actual directory. Here are the steps taken to discover
|
|
375
|
* the directory:
|
|
376
|
*
|
|
377
|
* -- 1) Look for an existing hidden (.<application_context>) directory in a default system directory. Get
|
|
378
|
* the default base directory for the OS. (See application.windowsBackupBaseDir and
|
|
379
|
* application.linuxBackupBaseDir in metacat.properties.) If a directory called
|
|
380
|
* <base_dir>/metacat/.<application_context> exists, return <base_dir>/metacat.
|
|
381
|
* -- 2) Otherwise, look for an existing hidden (.metacat) directory in the user directory. If a directory
|
|
382
|
* called <user_dir>/metacat/.<application_context> exists for the user that started tomcat,
|
|
383
|
* return <user_dir>/metacat.
|
|
384
|
* -- 3) Otherwise, look for an existing metacat directory in a default system directory. Get
|
|
385
|
* the default base directory for the OS. (See application.windowsBackupBaseDir and
|
|
386
|
* application.linuxBackupBaseDir in metacat.properties.) If a directory called
|
|
387
|
* <base_dir>/metacat exists, return <base_dir>/metacat.
|
|
388
|
* -- 4) Otherwise, look for an existing metacat directory in the user directory. If a directory
|
|
389
|
* called <user_dir>/metacat/ exists for the user that started tomcat, return <user_dir>/metacat.
|
|
390
|
* -- 5) Otherwise, is the <base_dir> writable by the user that started tomcat? If so, return
|
|
391
|
* <base_dir>/metacat
|
|
392
|
* -- 6) Does the <user_home> exist? If so, return <user_home>/metacat
|
|
393
|
* -- 7) Otherwise, return null
|
|
394
|
*
|
|
395
|
* @return a string holding the backup directory path
|
|
396
|
*/
|
|
397
|
public static String discoverExternalDir() throws UtilException {
|
|
398
|
String applicationContext = null;
|
|
399
|
|
|
400
|
try {
|
|
401
|
applicationContext = ServiceService.getRealApplicationContext();
|
|
402
|
|
|
403
|
// Set the default location using the os
|
|
404
|
String systemDir = "";
|
|
405
|
if (getOsClass() == WIN_OS) {
|
|
406
|
systemDir = PropertyService.getProperty("application.windowsBackupBaseDir");
|
|
407
|
} else {
|
|
408
|
systemDir = PropertyService.getProperty("application.linuxBackupBaseDir");
|
|
409
|
}
|
|
410
|
String systemMetacatDir = systemDir + FileUtil.getFS() + "metacat";
|
|
411
|
String systemBackupDir = systemMetacatDir + FileUtil.getFS() + "."
|
|
412
|
+ applicationContext;
|
|
413
|
|
|
414
|
String userHomeDir = getUserHomeDir();
|
|
415
|
String userHomeMetacatDir = userHomeDir + FileUtil.getFS() + "metacat";
|
|
416
|
String userHomeBackupDir = userHomeMetacatDir + FileUtil.getFS() + "." + applicationContext;
|
|
417
|
|
|
418
|
// If <system_dir>/metacat/.<application_context> exists writable,
|
|
419
|
// return <system_dir>/metacat
|
|
420
|
if ((FileUtil.getFileStatus(systemBackupDir) >= FileUtil.EXISTS_READ_WRITABLE)) {
|
|
421
|
return systemMetacatDir;
|
|
422
|
}
|
|
423
|
|
|
424
|
// Otherwise if <user_dir>/metacat/.<application_context> exists writable, return
|
|
425
|
// <user_dir>/metacat
|
|
426
|
if ((FileUtil.getFileStatus(userHomeBackupDir) >= FileUtil.EXISTS_READ_WRITABLE)) {
|
|
427
|
return userHomeMetacatDir;
|
|
428
|
}
|
|
429
|
|
|
430
|
// Otherwise if <system_dir>/metacat exists writable, create
|
|
431
|
// <system_dir>/metacat/.<application_context> and return <system_dir>/metacat
|
|
432
|
if ((FileUtil.getFileStatus(systemMetacatDir) >= FileUtil.EXISTS_READ_WRITABLE)) {
|
|
433
|
// go ahead and create the backup hidden dir
|
|
434
|
FileUtil.createDirectory(systemBackupDir);
|
|
435
|
return systemMetacatDir;
|
|
436
|
}
|
|
437
|
|
|
438
|
// Otherwise if <user_dir>/metacat exists writable, create
|
|
439
|
// <user_dir>/metacat/.<application_context> and return <user_dir>/metacat
|
|
440
|
if ((FileUtil.getFileStatus(userHomeMetacatDir) >= FileUtil.EXISTS_READ_WRITABLE)) {
|
|
441
|
// go ahead and create the backup hidden dir
|
|
442
|
FileUtil.createDirectory(userHomeBackupDir);
|
|
443
|
return userHomeMetacatDir;
|
|
444
|
}
|
|
445
|
|
|
446
|
// Otherwise if <system_dir> exists, create
|
|
447
|
// <system_dir>/metacat/.<application_context> and return <system_dir>/metacat
|
|
448
|
if ((FileUtil.getFileStatus(systemDir) >= FileUtil.EXISTS_READ_WRITABLE)) {
|
|
449
|
// go ahead and create the backup hidden dir
|
|
450
|
FileUtil.createDirectory(systemBackupDir);
|
|
451
|
return systemMetacatDir;
|
|
452
|
}
|
|
453
|
|
|
454
|
// Otherwise if <user_dir> exists, return <user_dir> create
|
|
455
|
// <user_dir>/metacat/.<application_context> and return <user_dir>/metacat
|
|
456
|
if ((FileUtil.getFileStatus(userHomeDir) >= FileUtil.EXISTS_READ_WRITABLE)) {
|
|
457
|
// go ahead and create the backup hidden dir
|
|
458
|
FileUtil.createDirectory(userHomeBackupDir);
|
|
459
|
return userHomeMetacatDir;
|
|
460
|
}
|
|
461
|
|
|
462
|
} catch (IOException ioe) {
|
|
463
|
logMetacat.warn("I/O proplem finding backup location: " + ioe.getMessage());
|
|
464
|
} catch (ServiceException se) {
|
|
465
|
logMetacat.warn("Could not get real application context: " + se.getMessage());
|
|
466
|
} catch (PropertyNotFoundException pnfe) {
|
|
467
|
logMetacat.warn("Could not get default backup base dir property: "
|
|
468
|
+ pnfe.getMessage());
|
|
469
|
}
|
|
470
|
|
|
471
|
// Otherwise, return userHomeDir
|
|
472
|
return null;
|
|
473
|
}
|
|
474
|
|
|
475
|
/**
|
|
476
|
* Store the location of the backup file location into a file at
|
|
477
|
* <user_home>/<application_dir>/backup-location
|
|
478
|
*
|
|
479
|
* @param externalDir the backup file location.
|
|
480
|
*/
|
|
481
|
public static void storeExternalDirLocation(String externalDir) {
|
|
482
|
if (getUserHomeDir() != null) {
|
|
483
|
String applicationContext = null;
|
|
484
|
String storedBackupLocDir = null;
|
|
485
|
String storedBackupLocFile = null;
|
|
486
|
try {
|
|
487
|
applicationContext = ServiceService.getRealApplicationContext();
|
|
488
|
storedBackupLocDir = getUserHomeDir() + FileUtil.getFS() + "."
|
|
489
|
+ applicationContext;
|
|
490
|
storedBackupLocFile = storedBackupLocDir + FileUtil.getFS()
|
|
491
|
+ "backup-location";
|
|
492
|
|
|
493
|
FileUtil.createDirectory(storedBackupLocDir);
|
|
494
|
FileUtil.writeFile(storedBackupLocFile, externalDir);
|
|
495
|
} catch (IOException ioe) {
|
|
496
|
logMetacat.error("I/O error while trying to write stored backup directory: "
|
|
497
|
+ storedBackupLocFile + " : " + ioe.getMessage());
|
|
498
|
} catch (ServiceException se) {
|
|
499
|
logMetacat.error("Could not get real application directory while trying to write "
|
|
500
|
+ "stored backup directory: "+ storedBackupLocFile + " : " + se.getMessage());
|
|
501
|
}
|
|
502
|
} else {
|
|
503
|
logMetacat.warn("Could not write out stored backup directory."
|
|
504
|
+ " User directory does not exist");
|
|
505
|
}
|
|
506
|
}
|
|
507
|
|
|
508
|
/**
|
|
509
|
* Get the style skins directory. This is made up of the tomcat directory
|
|
510
|
* with context + file separator + "style" + file separator + "skins"
|
|
511
|
*
|
|
512
|
* @return string holding the style skins directory
|
|
513
|
*/
|
|
514
|
public static String getStyleSkinsDir() throws PropertyNotFoundException {
|
|
515
|
return getContextDir() + FileUtil.getFS() + "style" + FileUtil.getFS()
|
|
516
|
+ "skins";
|
|
517
|
}
|
|
518
|
|
|
519
|
/**
|
|
520
|
* Get the SQL directory. This is made up of the context directory + file
|
|
521
|
* separator + sql
|
|
522
|
*
|
|
523
|
* @return string holding the sql directory
|
|
524
|
*/
|
|
525
|
public static String getSQLDir() throws PropertyNotFoundException {
|
|
526
|
return getContextDir() + FileUtil.getFS() + "WEB-INF" + FileUtil.getFS() + "sql";
|
|
527
|
}
|
|
528
|
|
|
529
|
/**
|
|
530
|
* Get the default style URL from metacat.properties.
|
|
531
|
*
|
|
532
|
* @return string holding the default style URL
|
|
533
|
*/
|
|
534
|
public static String getDefaultStyleURL() throws PropertyNotFoundException {
|
|
535
|
return getStyleCommonURL() + "/"
|
|
536
|
+ PropertyService.getProperty("application.default-style");
|
|
537
|
}
|
|
538
|
|
|
539
|
/**
|
|
540
|
* Attempt to discover the deployment directory for this application. This is a
|
|
541
|
* best guess scenario. It is used by configuration routines before the
|
|
542
|
* deployment directory has been populated in metacat.properties.
|
|
543
|
*
|
|
544
|
* @param request
|
|
545
|
* the http servlet request we will use to find the tomcat directory
|
|
546
|
*
|
|
547
|
* @return a string holding the web application directory
|
|
548
|
*/
|
|
549
|
public static String discoverDeployDir(HttpServletRequest request) {
|
|
550
|
ServletContext servletContext = request.getSession()
|
|
551
|
.getServletContext();
|
|
552
|
String realPath = servletContext.getRealPath(".");
|
|
553
|
String contextPath = request.getContextPath();
|
|
554
|
|
|
555
|
logMetacat.debug("realPath: " + realPath);
|
|
556
|
logMetacat.debug("contextPath: " + contextPath);
|
|
557
|
|
|
558
|
Pattern pattern = Pattern.compile(contextPath + "/\\.$");
|
|
559
|
Matcher matcher = pattern.matcher(realPath);
|
|
560
|
|
|
561
|
if (matcher.find()) {
|
|
562
|
realPath = matcher.replaceFirst("");
|
|
563
|
}
|
|
564
|
|
|
565
|
return realPath;
|
|
566
|
}
|
|
567
|
|
|
568
|
/**
|
|
569
|
* Get the current user's home directory
|
|
570
|
*
|
|
571
|
* @return a string holding the home directory
|
|
572
|
*/
|
|
573
|
public static String getUserHomeDir() {
|
|
574
|
return System.getProperty("user.home");
|
|
575
|
}
|
|
576
|
|
|
577
|
}
|