public void contextInitialized(ServletContextEvent sce) {
final ServletContext app = sce.getServletContext();
final Configuration conf = NutchConfiguration.get(app);
LOG.info("creating new bean");
NutchBean bean = null;
try {
bean = new NutchBean(conf);
app.setAttribute(KEY, bean);
} catch (final IOException ex) {
LOG.error(StringUtils.stringifyException(ex));
}
}
/** Check to see if the configuration file has been updated so that it may be reloaded. */
private boolean configUpdated() {
try {
URL url = ctx.getResource(resourcesDir + XHP_CONFIG);
URLConnection con;
if (url == null) return false;
con = url.openConnection();
long lastModified = con.getLastModified();
long XHP_LAST_MODIFIEDModified = 0;
if (ctx.getAttribute(XHP_LAST_MODIFIED) != null) {
XHP_LAST_MODIFIEDModified = ((Long) ctx.getAttribute(XHP_LAST_MODIFIED)).longValue();
} else {
ctx.setAttribute(XHP_LAST_MODIFIED, new Long(lastModified));
return false;
}
if (XHP_LAST_MODIFIEDModified < lastModified) {
ctx.setAttribute(XHP_LAST_MODIFIED, new Long(lastModified));
return true;
}
} catch (Exception ex) {
getLogger().severe("XmlHttpProxyServlet error checking configuration: " + ex);
}
return false;
}
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String length = request.getParameter("primeLength");
ServletContext context = getServletContext();
synchronized (this) {
if ((context.getAttribute("primeBean") == null) || (!isMissing(length))) {
PrimeBean primeBean = new PrimeBean(length);
context.setAttribute("primeBean", primeBean);
}
String address = "/WEB-INF/results/show-prime.jsp";
RequestDispatcher dispatcher = request.getRequestDispatcher(address);
dispatcher.forward(request, response);
}
}
public void init() {
context = getServletContext();
synchronized (context) {
pool = (ConnectionPool) context.getAttribute("pool");
if (pool == null) {
String driverClassName = context.getInitParameter("driverClassName");
String url = context.getInitParameter("url");
String userName = context.getInitParameter("username");
String password = context.getInitParameter("password");
try {
pool = new ConnectionPool(driverClassName, url, userName, password);
} catch (Exception error) {
Routines.writeToLog(
servletName, "Unable to create connection pool : " + error, false, context);
}
context.setAttribute("pool", pool);
}
}
}