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/**
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* '$RCSfile$'
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* Copyright: 2004 University of New Mexico and the
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* Regents of the University of California
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*
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* '$Author: costa $'
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* '$Date: 2004-04-09 10:59:30 -0700 (Fri, 09 Apr 2004) $'
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* '$Revision: 2114 $'
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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.harvesterClient;
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import com.oreilly.servlet.ParameterParser;
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import java.io.File;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.SQLWarning;
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import java.sql.Statement;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Enumeration;
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import java.util.Properties;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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/**
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* HarvesterRegistration is a servlet that implements harvester registration.
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* The servlet reads parameters that were entered in a harvester registration
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* form, checks the validity of the values, stores the values in the database
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* by either inserting, updating, or removing a record in the
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* HARVEST_SITE_SCHEDULE table.
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*
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* @author costa
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*
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*/
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public class HarvesterRegistration extends HttpServlet {
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/*
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* Object fields
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*/
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private String defaultDB; // database connection, from properties file
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final private long millisecondsPerDay = (1000 * 60 * 60 * 24);
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private String password; // database password, from properties file
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private String user; // database user, from properties file
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/*
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* Object methods
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*/
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/**
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* Checks validity of user input values.
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*
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* @param out the PrintWriter output object
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* @param documentListURL the Harvest Document List URL specified by the user
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* @param updateFrequency the Harvest Frequency specified by the user
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* @return validValues true if all values are valid, else false
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*/
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private boolean checkValues(PrintWriter out,
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String documentListURL,
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int updateFrequency
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) {
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boolean validValues = true;
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// Check validity of the Harvest Document List URL field
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if (documentListURL.equals("")) {
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out.println(
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"A value must be specified in the Harvest Document List URL field"
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);
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validValues = false;
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}
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// Check validity of the Harvest Frequency field
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if ((updateFrequency < 1) || (updateFrequency > 99)) {
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out.println("Harvest Frequency should be in the range 1 to 99");
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validValues = false;
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}
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return validValues;
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}
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/**
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* Closes the database connection.
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*
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* @param conn The connection.
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*/
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private void closeConnection(Connection conn) {
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try {
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if (conn != null) {
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conn.close();
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}
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}
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catch (SQLException e) {
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// ignored
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}
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}
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/**
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* Inserts a record to the HARVEST_SITE_SCHEDULE table.
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*
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* @param out the PrintWriter output object
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* @param conn the Connection
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* @param siteScheduleID the primary key for the table
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* @param contactEmail contact email address of the site user
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* @param documentListURL the URL of the harvester document list at the site
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* @param ldapDN the site user's LDAP DN
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* @param ldapPwd the site user's LDAP password
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* @param unit the update frequency unit, e.g. "days", "weeks"
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* @param updateFrequency the update frequency, an integer in range 1-99
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*/
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private void dbInsert(PrintWriter out,
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Connection conn,
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int siteScheduleID,
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String contactEmail,
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String documentListURL,
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String ldapDN,
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String ldapPwd,
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String unit,
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int updateFrequency
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) {
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String dateNextHarvest;
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long delta;
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Date dnh; // Date of next harvest
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Date now; // Today's date
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String query;
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Statement stmt;
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long timeNextHarvest;
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SimpleDateFormat writeFormat = new SimpleDateFormat("dd-MMM-yyyy");
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// Calculate the value of delta, the number of milliseconds between the
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// last harvest date and the next harvest date.
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delta = updateFrequency * millisecondsPerDay;
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if (unit.equals("weeks")) {
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delta *= 7;
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}
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else if (unit.equals("months")) {
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delta *= 30;
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}
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now = new Date();
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timeNextHarvest = now.getTime();
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dnh = new Date(timeNextHarvest);
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dateNextHarvest = writeFormat.format(dnh);
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try {
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stmt = conn.createStatement();
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query = "insert into HARVEST_SITE_SCHEDULE " +
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"(SITE_SCHEDULE_ID, CONTACT_EMAIL, DOCUMENTLISTURL, LDAPDN, LDAPPWD, " +
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"UNIT, UPDATEFREQUENCY, DATENEXTHARVEST) " +
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"values(" + siteScheduleID + "," +
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quoteString(contactEmail) + "," +
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quoteString(documentListURL) + "," +
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quoteString(ldapDN) + "," +
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quoteString(ldapPwd) + "," +
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quoteString(unit) + "," +
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updateFrequency + "," +
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quoteString(dateNextHarvest) + ")";
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System.out.println(query);
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stmt.executeUpdate(query);
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stmt.close();
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reportResults(out, ldapDN, contactEmail, documentListURL, updateFrequency,
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unit, dateNextHarvest);
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}
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catch(SQLException e) {
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System.out.println("SQLException: " + e.getMessage());
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}
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}
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/**
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* Removes a record from the HARVEST_SITE_SCHEDULE table.
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*
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* @param out the PrintWriter output object
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* @param conn the Connection
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* @param siteScheduleID the primary key for the table
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* @param ldapDN the site user's LDAP DN
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*/
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private void dbRemove(PrintWriter out,
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Connection conn,
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int siteScheduleID,
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String ldapDN
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) {
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String query = "DELETE FROM HARVEST_SITE_SCHEDULE WHERE " +
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"SITE_SCHEDULE_ID=" + siteScheduleID;
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int nRecords = 0;
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Statement stmt;
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try {
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stmt = conn.createStatement();
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System.out.println(query);
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nRecords = stmt.executeUpdate(query);
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stmt.close();
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System.out.println(nRecords + " record(s) removed.");
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if (nRecords > 0) {
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out.println("Harvester registration removed for user " + ldapDN);
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}
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else {
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out.println("A problem was encountered removing registration for user "
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+ ldapDN);
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}
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}
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catch(SQLException e) {
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System.out.println("SQLException: " + e.getMessage());
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}
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}
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/**
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* Updates a record in the HARVEST_SITE_SCHEDULE table.
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*
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* @param out the PrintWriter output object
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* @param conn the Connection
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* @param siteScheduleID the primary key for the table
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* @param contactEmail contact email address of the site user
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* @param documentListURL the URL of the harvester document list at the site
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* @param ldapDN the site user's LDAP DN
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* @param ldapPwd the site user's LDAP password
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* @param unit the update frequency unit, e.g. "days", "weeks"
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* @param updateFrequency the update frequency, an integer in range 1-99
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* @param dateLastHarvest the date of last harvest,
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* e.g. "2004-04-30 00:00:00.0" or ""
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*/
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private void dbUpdate(PrintWriter out,
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Connection conn,
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int siteScheduleID,
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String contactEmail,
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String documentListURL,
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String ldapDN,
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String ldapPwd,
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String unit,
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int updateFrequency,
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String dateLastHarvest
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) {
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String dateNextHarvest;
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long delta;
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Date dlh; // Date of last harvest
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Date dnh; // Date of next harvest
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Date now = new Date(); // Today's date
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SimpleDateFormat readFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S");
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SimpleDateFormat writeFormat = new SimpleDateFormat("dd-MMM-yyyy");
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Statement stmt;
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long timeLastHarvest;
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long timeNextHarvest;
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long timeNow = now.getTime();
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// Calculate the value of delta, the number of milliseconds between the
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// last harvest date and the next harvest date.
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delta = updateFrequency * millisecondsPerDay;
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if (unit.equals("weeks")) {
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delta *= 7;
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}
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else if (unit.equals("months")) {
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delta *= 30;
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}
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if (dateLastHarvest.equals("")) {
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timeNextHarvest = timeNow;
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}
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else {
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try {
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dlh = readFormat.parse(dateLastHarvest);
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timeLastHarvest = dlh.getTime();
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timeNextHarvest = timeLastHarvest + delta;
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timeNextHarvest = Math.max(timeNextHarvest, timeNow);
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}
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catch (ParseException e) {
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System.out.println("Error parsing date: " + dateLastHarvest +
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" " + e.getMessage());
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timeNextHarvest = timeNow;
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}
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}
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dnh = new Date(timeNextHarvest);
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dateNextHarvest = writeFormat.format(dnh);
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET CONTACT_EMAIL=" +
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quoteString(contactEmail) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET DOCUMENTLISTURL=" +
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quoteString(documentListURL) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET LDAPPWD=" +
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quoteString(ldapPwd) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET UNIT=" +
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quoteString(unit) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET UPDATEFREQUENCY=" +
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updateFrequency +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.executeUpdate("UPDATE HARVEST_SITE_SCHEDULE SET DATENEXTHARVEST=" +
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quoteString(dateNextHarvest) +
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" WHERE SITE_SCHEDULE_ID = " + siteScheduleID);
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stmt.close();
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reportResults(out, ldapDN, contactEmail, documentListURL, updateFrequency,
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unit, dateNextHarvest);
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}
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catch(SQLException e) {
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System.out.println("SQLException: " + e.getMessage());
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333
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}
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334
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|
335
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}
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336
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|
337
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338
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/**
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339
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* Handles GET method requests. Displays the current registration info for
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340
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* this user (if any), then allows the user to make changes and register or
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* unregister.
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*
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* @param req the request
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* @param res the response
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* @throws ServletException
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* @throws IOException
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*/
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348
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public void doGet(HttpServletRequest req, HttpServletResponse res)
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349
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throws ServletException, IOException {
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350
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Connection conn = getConnection();
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String contactEmail = "";
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String documentListURL = "http://";
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HttpSession httpSession;
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String ldapDN;
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String ldapPwd;
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356
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String query;
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357
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int siteScheduleID;
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Statement stmt;
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359
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String unit = "days";
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360
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int updateFrequency = 1;
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361
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362
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httpSession = req.getSession(false);
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363
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if (httpSession == null) {
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365
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System.out.println("User did not log in.");
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366
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return;
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367
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}
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368
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|
369
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// The user name and password are stored as session attributes by the
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370
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// HarvesterRegistrationLogin servlet.
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371
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ldapDN = (String) httpSession.getAttribute("ldapDN");
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372
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ldapPwd = (String) httpSession.getAttribute("ldapPwd");
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373
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374
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siteScheduleID = getSiteScheduleID(conn, ldapDN);
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375
|
|
376
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// If the user is already registered, query the existing values and
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377
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// initialize the form with them.
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378
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if (siteScheduleID != 0) {
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379
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query = "SELECT * FROM HARVEST_SITE_SCHEDULE WHERE SITE_SCHEDULE_ID=" +
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380
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siteScheduleID;
|
381
|
|
382
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try {
|
383
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stmt = conn.createStatement();
|
384
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ResultSet rs = stmt.executeQuery(query);
|
385
|
|
386
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while (rs.next()) {
|
387
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contactEmail = rs.getString("CONTACT_EMAIL");
|
388
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documentListURL = rs.getString("DOCUMENTLISTURL");
|
389
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updateFrequency = rs.getInt("UPDATEFREQUENCY");
|
390
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unit = rs.getString("UNIT");
|
391
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}
|
392
|
|
393
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stmt.close();
|
394
|
}
|
395
|
catch (SQLException ex) {
|
396
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System.out.println("SQLException: " + ex.getMessage());
|
397
|
}
|
398
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}
|
399
|
|
400
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res.setContentType("text/html");
|
401
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PrintWriter out = res.getWriter();
|
402
|
|
403
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// Print the registration form
|
404
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out.println("<HTML>");
|
405
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out.println("<HEAD>");
|
406
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out.println("<TITLE>Metacat Harvester Registration</TITLE>");
|
407
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out.println("</HEAD>");
|
408
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out.println("<BODY>");
|
409
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out.println("<H2><B>Metacat Harvester Registration</B></H2>");
|
410
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out.println("<FORM METHOD=POST>"); // posts to itself
|
411
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out.println("To register or changes values, enter all values ");
|
412
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out.println("below and click <B>Register</B>.<BR>");
|
413
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out.println("To unregister, simply click <B>Unregister</B>.<BR>");
|
414
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out.println("<BR><BR>");
|
415
|
out.println("<pre>Email address: </pre>");
|
416
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out.println("<INPUT TYPE=TEXT NAME=contactEmail VALUE=");
|
417
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out.println(contactEmail + ">");
|
418
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out.println("<BR><BR>");
|
419
|
out.println("<pre>Harvest Document List URL: </pre>");
|
420
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out.println("<INPUT TYPE=TEXT NAME=documentListURL VALUE=");
|
421
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out.println(documentListURL + ">");
|
422
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out.println("<BR><BR>");
|
423
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out.println("<pre>Harvest Frequency (1-99): </pre>");
|
424
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out.println("<INPUT TYPE=TEXT NAME=updateFrequency ");
|
425
|
out.println("MAXLENGTH=2 SIZE=2 VALUE=");
|
426
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out.println(updateFrequency + ">");
|
427
|
out.println("<BR><BR>");
|
428
|
out.println("<pre>Unit: </pre>");
|
429
|
out.println("<INPUT TYPE=RADIO ");
|
430
|
if (unit.equals("days")) out.println("CHECKED ");
|
431
|
out.println("NAME=unit VALUE=days>day(s)");
|
432
|
out.println("<INPUT TYPE=RADIO ");
|
433
|
if (unit.equals("weeks")) out.println("CHECKED ");
|
434
|
out.println("NAME=unit VALUE=weeks>week(s)");
|
435
|
out.println("<INPUT TYPE=RADIO ");
|
436
|
if (unit.equals("months")) out.println("CHECKED ");
|
437
|
out.println("NAME=unit VALUE=months>month(s)");
|
438
|
out.println("<BR><BR><BR>");
|
439
|
out.println("<INPUT TYPE=SUBMIT NAME=register VALUE=Register>");
|
440
|
out.println("<INPUT TYPE=SUBMIT NAME=unregister VALUE=Unregister>");
|
441
|
out.println("</BODY>");
|
442
|
out.println("</HTML>");
|
443
|
}
|
444
|
|
445
|
|
446
|
/**
|
447
|
* Handles POST method requests. Reads values as entered by the user in the
|
448
|
* harvester registration form and checks them for validity. Then either
|
449
|
* inserts, updates, or removes a record in the HARVEST_SITE_SCHEDULE table.
|
450
|
*
|
451
|
* @param req the request
|
452
|
* @param res the response
|
453
|
* @throws ServletException
|
454
|
* @throws IOException
|
455
|
*/
|
456
|
public void doPost(HttpServletRequest req, HttpServletResponse res)
|
457
|
throws ServletException, IOException {
|
458
|
Connection conn = getConnection();
|
459
|
int maxValue;
|
460
|
boolean remove = false; // if true, remove record
|
461
|
int siteScheduleID;
|
462
|
String contactEmail;
|
463
|
String dateLastHarvest;
|
464
|
String dateNextHarvest;
|
465
|
String documentListURL;
|
466
|
HttpSession httpSession;
|
467
|
String ldapDN;
|
468
|
String ldapPwd;
|
469
|
PrintWriter out;
|
470
|
ParameterParser parameterParser = new ParameterParser(req);
|
471
|
String register;
|
472
|
String unit;
|
473
|
String unregister;
|
474
|
int updateFrequency;
|
475
|
boolean validValues;
|
476
|
|
477
|
httpSession = req.getSession(false);
|
478
|
|
479
|
if (httpSession == null) {
|
480
|
System.out.println("User did not log in.");
|
481
|
return;
|
482
|
}
|
483
|
|
484
|
// The user name and password are stored as session attributes by the
|
485
|
// HarvesterRegistrationLogin servlet
|
486
|
ldapDN = (String) httpSession.getAttribute("ldapDN");
|
487
|
ldapPwd = (String) httpSession.getAttribute("ldapPwd");
|
488
|
|
489
|
contactEmail = parameterParser.getStringParameter("contactEmail", "None");
|
490
|
documentListURL = parameterParser.getStringParameter("documentListURL", "");
|
491
|
unit = parameterParser.getStringParameter("unit", "days");
|
492
|
updateFrequency = parameterParser.getIntParameter("updateFrequency", 1);
|
493
|
register = parameterParser.getStringParameter("register", "");
|
494
|
unregister = parameterParser.getStringParameter("unregister", "");
|
495
|
remove = (unregister.equalsIgnoreCase("Unregister"));
|
496
|
siteScheduleID = getSiteScheduleID(conn, ldapDN);
|
497
|
dateLastHarvest = getDateLastHarvest(conn, siteScheduleID);
|
498
|
|
499
|
res.setContentType("text/plain");
|
500
|
out = res.getWriter();
|
501
|
|
502
|
if (!remove) {
|
503
|
validValues = checkValues(out, documentListURL, updateFrequency);
|
504
|
|
505
|
if (!validValues) {
|
506
|
return;
|
507
|
}
|
508
|
}
|
509
|
|
510
|
if (siteScheduleID == 0) {
|
511
|
if (remove) {
|
512
|
// The user clicked Unregister, but no existing record was found
|
513
|
System.out.println("Unable to remove record for user " + ldapDN);
|
514
|
System.out.println("No matching record found in HARVEST_SITE_SCHEDULE");
|
515
|
out.println("No record found for user " + ldapDN + ".");
|
516
|
out.println("Since you were not registered, no action was taken.");
|
517
|
}
|
518
|
else {
|
519
|
maxValue = getMaxValue(conn,
|
520
|
"HARVEST_SITE_SCHEDULE",
|
521
|
"SITE_SCHEDULE_ID");
|
522
|
siteScheduleID = maxValue + 1;
|
523
|
dbInsert(out, conn, siteScheduleID, contactEmail, documentListURL,
|
524
|
ldapDN, ldapPwd, unit, updateFrequency);
|
525
|
}
|
526
|
}
|
527
|
else {
|
528
|
// Either update or remove an existing record
|
529
|
if (remove) {
|
530
|
dbRemove(out, conn, siteScheduleID, ldapDN);
|
531
|
}
|
532
|
else {
|
533
|
dbUpdate(out, conn, siteScheduleID, contactEmail, documentListURL,
|
534
|
ldapDN, ldapPwd, unit, updateFrequency, dateLastHarvest);
|
535
|
}
|
536
|
}
|
537
|
|
538
|
closeConnection(conn);
|
539
|
}
|
540
|
|
541
|
|
542
|
/**
|
543
|
* Gets a database connection.
|
544
|
*
|
545
|
* @return conn, the Connection object
|
546
|
*/
|
547
|
private Connection getConnection() {
|
548
|
Connection conn = null;
|
549
|
SQLWarning warn;
|
550
|
|
551
|
// Make the database connection
|
552
|
try {
|
553
|
System.out.println("Getting connection to Harvester tables");
|
554
|
conn = DriverManager.getConnection(defaultDB, user, password);
|
555
|
|
556
|
// If a SQLWarning object is available, print its warning(s).
|
557
|
// There may be multiple warnings chained.
|
558
|
warn = conn.getWarnings();
|
559
|
|
560
|
if (warn != null) {
|
561
|
while (warn != null) {
|
562
|
System.out.println("SQLState: " + warn.getSQLState());
|
563
|
System.out.println("Message: " + warn.getMessage());
|
564
|
System.out.println("Vendor: " + warn.getErrorCode());
|
565
|
System.out.println("");
|
566
|
warn = warn.getNextWarning();
|
567
|
}
|
568
|
}
|
569
|
}
|
570
|
catch (SQLException e) {
|
571
|
System.out.println("Database access failed " + e);
|
572
|
}
|
573
|
|
574
|
return conn;
|
575
|
}
|
576
|
|
577
|
|
578
|
/**
|
579
|
* Gets the date of last harvest value from the HARVEST_SITE_SCHEDULE table,
|
580
|
* given a siteScheduleID value (the primary key).
|
581
|
*
|
582
|
* @param conn the connection
|
583
|
* @param siteScheduleID the primary key
|
584
|
* @return dateLastHarvest the string stored in the table, e.g.
|
585
|
* "2004-04-30 00:00:00.0" or ""
|
586
|
*/
|
587
|
private String getDateLastHarvest(Connection conn, int siteScheduleID) {
|
588
|
String dateLastHarvest = "";
|
589
|
String query = "SELECT DATELASTHARVEST FROM HARVEST_SITE_SCHEDULE " +
|
590
|
"WHERE SITE_SCHEDULE_ID=" + siteScheduleID;
|
591
|
Statement stmt;
|
592
|
|
593
|
try {
|
594
|
stmt = conn.createStatement();
|
595
|
ResultSet rs = stmt.executeQuery(query);
|
596
|
|
597
|
while (rs.next()) {
|
598
|
dateLastHarvest = rs.getString("DATELASTHARVEST");
|
599
|
if (rs.wasNull()) {
|
600
|
dateLastHarvest = ""; // Convert null value to empty string
|
601
|
}
|
602
|
}
|
603
|
|
604
|
stmt.close();
|
605
|
}
|
606
|
catch (SQLException ex) {
|
607
|
System.out.println("SQLException: " + ex.getMessage());
|
608
|
}
|
609
|
|
610
|
return dateLastHarvest;
|
611
|
}
|
612
|
|
613
|
|
614
|
/**
|
615
|
* Gets the maximum value of an integer field from a table, given the table
|
616
|
* name and the field name.
|
617
|
*
|
618
|
* @param tableName the database table name
|
619
|
* @param fieldName the field name of the integer field in the table
|
620
|
* @return the maximum integer stored in the fieldName field of tableName
|
621
|
*/
|
622
|
private int getMaxValue(Connection conn, String tableName, String fieldName) {
|
623
|
int maxValue = 0;
|
624
|
int fieldValue;
|
625
|
String query = "SELECT " + fieldName + " FROM " + tableName;
|
626
|
Statement stmt;
|
627
|
|
628
|
try {
|
629
|
stmt = conn.createStatement();
|
630
|
ResultSet rs = stmt.executeQuery(query);
|
631
|
|
632
|
while (rs.next()) {
|
633
|
fieldValue = rs.getInt(fieldName);
|
634
|
maxValue = Math.max(maxValue, fieldValue);
|
635
|
}
|
636
|
|
637
|
stmt.close();
|
638
|
}
|
639
|
catch (SQLException ex) {
|
640
|
System.out.println("SQLException: " + ex.getMessage());
|
641
|
}
|
642
|
|
643
|
return maxValue;
|
644
|
}
|
645
|
|
646
|
|
647
|
/**
|
648
|
* Gets the siteScheduleID value from the HARVEST_SITE_SCHEDULE table, given
|
649
|
* the value of the ldapDN field.
|
650
|
*
|
651
|
* @param conn the database connection
|
652
|
* @param ldapDN the ldap DN string
|
653
|
* @return siteScheduleID, an integer, the primary key
|
654
|
*/
|
655
|
private int getSiteScheduleID(Connection conn, String ldapDN) {
|
656
|
String ldapDNValue; // value of LDAPDN field
|
657
|
String query = "SELECT * FROM HARVEST_SITE_SCHEDULE";
|
658
|
int siteScheduleID = 0;
|
659
|
Statement stmt;
|
660
|
|
661
|
try {
|
662
|
stmt = conn.createStatement();
|
663
|
ResultSet rs = stmt.executeQuery(query);
|
664
|
|
665
|
while (rs.next()) {
|
666
|
ldapDNValue = rs.getString("LDAPDN");
|
667
|
|
668
|
if (ldapDNValue.equalsIgnoreCase(ldapDN)) {
|
669
|
siteScheduleID = rs.getInt("SITE_SCHEDULE_ID");
|
670
|
}
|
671
|
}
|
672
|
|
673
|
stmt.close();
|
674
|
}
|
675
|
catch (SQLException ex) {
|
676
|
System.out.println("SQLException: " + ex.getMessage());
|
677
|
}
|
678
|
|
679
|
return siteScheduleID;
|
680
|
}
|
681
|
|
682
|
|
683
|
/**
|
684
|
* Initializes the servlet. Reads properties and initializes object fields.
|
685
|
*
|
686
|
* @throws ServletException
|
687
|
*/
|
688
|
public void init() throws ServletException {
|
689
|
String dbDriver;
|
690
|
Properties properties = loadProperties();
|
691
|
|
692
|
dbDriver = properties.getProperty("dbDriver");
|
693
|
defaultDB = properties.getProperty("defaultDB");
|
694
|
password = properties.getProperty("password");
|
695
|
user = properties.getProperty("user");
|
696
|
|
697
|
// Load the jdbc driver
|
698
|
try {
|
699
|
Class.forName(dbDriver);
|
700
|
}
|
701
|
catch (ClassNotFoundException e) {
|
702
|
System.out.println("Can't load driver " + e);
|
703
|
}
|
704
|
}
|
705
|
|
706
|
|
707
|
/**
|
708
|
* Loads Harvester properties from a configuration file.
|
709
|
*/
|
710
|
private Properties loadProperties() {
|
711
|
InputStream inputStream;
|
712
|
String path = "/harvester/harvester.properties";
|
713
|
Properties properties = new Properties();
|
714
|
ServletContext servletContext = getServletContext();
|
715
|
|
716
|
try {
|
717
|
inputStream = servletContext.getResourceAsStream(path);
|
718
|
properties.load(inputStream);
|
719
|
properties.list(System.out);
|
720
|
}
|
721
|
catch (IOException e) {
|
722
|
System.out.println("IOException: " + e.getMessage());
|
723
|
}
|
724
|
|
725
|
return properties;
|
726
|
}
|
727
|
|
728
|
|
729
|
/**
|
730
|
* Surrounds a string with single quotes.
|
731
|
* @param str the original string
|
732
|
* @return the quoted string
|
733
|
*/
|
734
|
private String quoteString(String str) {
|
735
|
return "'" + str + "'";
|
736
|
}
|
737
|
|
738
|
|
739
|
/**
|
740
|
* Reports the results of an insert or update to the client.
|
741
|
*
|
742
|
* @param out the PrintWriter
|
743
|
* @param ldapDN the LDAP DN string
|
744
|
* @param contactEmail the email address of the site contact
|
745
|
* @param documentListURL the URL of the harvester document list at the site
|
746
|
* @param updateFrequency the harvest update frequency
|
747
|
* @param unit the unit (e.g. "days", "weeks", "months"
|
748
|
* @param dateNextHarvest the date of the next scheduled harvest
|
749
|
*/
|
750
|
private void reportResults(PrintWriter out,
|
751
|
String ldapDN,
|
752
|
String contactEmail,
|
753
|
String documentListURL,
|
754
|
int updateFrequency,
|
755
|
String unit,
|
756
|
String dateNextHarvest
|
757
|
) {
|
758
|
out.println("Harvester registration updated for " + ldapDN);
|
759
|
out.println(" Email Address: " + contactEmail);
|
760
|
out.println(" Harvest Document List URL: " + documentListURL);
|
761
|
out.println(" Harvest Frequency: " + updateFrequency);
|
762
|
out.println(" Unit: " + unit);
|
763
|
out.println("");
|
764
|
out.println("Next scheduled harvest date: " + dateNextHarvest);
|
765
|
}
|
766
|
|
767
|
}
|