Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
clime.messadmin.admin.MessAdminServlet Maven / Gradle / Ivy
Notification system and Session administration for J2EE Web Applications
package clime.messadmin.admin;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import clime.messadmin.core.Constants;
import clime.messadmin.core.MessAdmin;
import clime.messadmin.model.Application;
import clime.messadmin.model.IApplicationInfo;
import clime.messadmin.model.IServerInfo;
import clime.messadmin.model.Server;
import clime.messadmin.model.Session;
import clime.messadmin.utils.ComparableBoolean;
import clime.messadmin.utils.ReverseComparator;
import clime.messadmin.utils.SessionUtils;
/**
* Servlet implementation class for Servlet: MessAdminServlet
* Injects a message into every active sessions
* IMPLEMENTATION NOTE: always use include() instead of forward(), to get the real name of this servlet in jsp's
* @author Cédrik LIME
*/
public class MessAdminServlet extends HttpServlet implements Servlet {
private static final boolean DEBUG = false;
private static final String METHOD_POST = "POST";
protected String webFilesRoot = "/MessAdmin/";//$NON-NLS-1$
protected String serverInfosJspPath = webFilesRoot + "serverInfos.jsp";//$NON-NLS-1$
protected String webAppsListJspPath = webFilesRoot + "webAppsList.jsp";//$NON-NLS-1$
protected String webAppStatsJspPath = webFilesRoot + "webAppStats.jsp";//$NON-NLS-1$
protected String sessionsListJspPath = webFilesRoot + "sessionsList.jsp";//$NON-NLS-1$
protected String sessionDetailJspPath = webFilesRoot + "sessionDetail.jsp";//$NON-NLS-1$
protected String authorizationPassword = null;
/** {@inheritDoc} */
public void log(String message) {
if (DEBUG) {
getServletContext().log(getServletName() + ": " + message);
}
}
/** {@inheritDoc} */
public void log(String message, Throwable t) {
if (DEBUG) {
getServletContext().log(getServletName() + ": " + message, t);
}
}
/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#HttpServlet()
*/
public MessAdminServlet() {
super();
}
/**
* {@inheritDoc}
*/
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
process(req, resp);
}
/**
* {@inheritDoc}
*/
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
process(req, resp);
}
/**
* Dispatcher method which processes the request
* @param req
* @param resp
* @throws ServletException
* @throws IOException
*/
protected void process(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// Some attributes needed by some or all JSPs
req.setAttribute("autorefresh", req.getParameter("autorefresh"));//$NON-NLS-1$ //$NON-NLS-2$
req.setAttribute("WebFilesRoot", req.getContextPath() + webFilesRoot);//$NON-NLS-1$
if (req.getParameter(Constants.APPLICATION_MESSAGE) != null) {
req.setAttribute(Constants.APPLICATION_MESSAGE, req.getParameter(Constants.APPLICATION_MESSAGE));
}
if (req.getParameter(Constants.APPLICATION_ERROR) != null) {
req.setAttribute(Constants.APPLICATION_ERROR, req.getParameter(Constants.APPLICATION_ERROR));
}
resp.setContentType("text/html");//should be "application/xhtml+xml", but IE screws us once again...
resp.setLocale(Locale.ENGLISH);
if (! HTTPAuthorizationProvider.checkAccess(authorizationPassword, req, resp)) {
return;
}
String action = req.getParameter("action");//$NON-NLS-1$
// The Big Dispatch(TM), part 1
if ("serverInfos".equals(action)) {//$NON-NLS-1$
displayServerInfosPage(req, resp);
return;
} else if ("webAppsList".equals(action)) {//$NON-NLS-1$
displayWebAppsList(req, resp);
return;
} else if ("injectApplications".equals(action)) {//$NON-NLS-1$
String permanent = req.getParameter("permanent");
String[] applicationIds = req.getParameterValues("applicationIds");//$NON-NLS-1$
String message = req.getParameter("message");//$NON-NLS-1$
int i;
if (permanent != null) {
i = MessAdmin.injectApplicationsPermanent(applicationIds, message);
} else {
i = MessAdmin.injectApplicationsOnce(applicationIds, message);
}
req.setAttribute(Constants.APPLICATION_MESSAGE, "" + i + " applications modified.");
displayWebAppsList(req, resp);
return;
}
// Get the WebApp context we want to work with
String context = req.getParameter("context");//$NON-NLS-1$
if (context == null && Server.getInstance().getAllKnownInternalContexts().size() == 1) {
context = (String) Server.getInstance().getAllKnownInternalContexts().toArray()[0];//req.getContextPath();
}
// If no or invalid context, display a list of available WebApps
if (context == null || Server.getInstance().getApplication(context) == null) {
displayWebAppsList(req, resp);
return;
}
req.setAttribute("context", context);//$NON-NLS-1$
// The Big Dispatch(TM), part 2
if ("webAppStats".equals(action)) {//$NON-NLS-1$
displayWebAppStatsPage(req, resp, context);
return;
} else if ("sessionsList".equals(action)) {//$NON-NLS-1$
displaySessionsListPage(req, resp, context);
return;
} else if ("sessionDetail".equals(action)) {//$NON-NLS-1$
String sessionId = req.getParameter("sessionId");//$NON-NLS-1$
displaySessionDetailPage(req, resp, context, sessionId);
return;
} else if ("removeServletContextAttribute".equals(action)) {//$NON-NLS-1$
String name = req.getParameter("attributeName");//$NON-NLS-1$
IApplicationInfo applicationInfo = Server.getInstance().getApplication(context).getApplicationInfo();
boolean removed = (null != applicationInfo.getAttribute(name));
applicationInfo.removeAttribute(name);
String outMessage = removed ? "Context attribute '" + name + "' removed." : "Context " + context + " did not contain any attribute named '" + name + '\'';
req.setAttribute(Constants.APPLICATION_MESSAGE, outMessage);
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=webAppStats&context=").append(context).toString()));
return;
} else if ("injectApplication".equals(action)) {//$NON-NLS-1$
String message = req.getParameter("message");//$NON-NLS-1$
Application application = Server.getInstance().getApplication(context);
application.injectPermanentMessage(message);
req.setAttribute(Constants.APPLICATION_MESSAGE, "Global message set.");
displaySessionsListPage(req, resp, context);
return;
} else if ("injectSessions".equals(action)) {//$NON-NLS-1$
String[] sessionIds = req.getParameterValues("sessionIds");//$NON-NLS-1$
String message = req.getParameter("message");//$NON-NLS-1$
int i = MessAdmin.injectSessions(context, sessionIds, message);
req.setAttribute(Constants.APPLICATION_MESSAGE, "" + i + " sessions modified.");
displaySessionsListPage(req, resp, context);
return;
} else if ("invalidateSessions".equals(action)) {//$NON-NLS-1$
String[] sessionIds = req.getParameterValues("sessionIds");//$NON-NLS-1$
int i = MessAdmin.invalidateSessions(context, sessionIds);
req.setAttribute(Constants.APPLICATION_MESSAGE, "" + i + " sessions invalidated.");
displaySessionsListPage(req, resp, context);
return;
} else if ("setSessionMaxInactiveInterval".equals(action)) {//$NON-NLS-1$
String sessionId = req.getParameter("sessionId");//$NON-NLS-1$
String timeoutStr = req.getParameter("timeout");//$NON-NLS-1$
try {
int timeout = Integer.parseInt(timeoutStr.trim()) * 60;
int oldTimeout = MessAdmin.setSessionMaxInactiveInterval(context, sessionId, timeout);
String outMessage = oldTimeout != 0 ? "Session " + sessionId + " timeout set from " + oldTimeout/60 + " minutes to " + timeoutStr + " minutes." : "Could not set Session timeout for id " + sessionId;
req.setAttribute(Constants.APPLICATION_MESSAGE, outMessage);
} catch (NumberFormatException nfe) {
req.setAttribute(Constants.APPLICATION_ERROR, "Please specify a timeout in minutes!");
} catch (NullPointerException npe) {
req.setAttribute(Constants.APPLICATION_ERROR, "Please specify a timeout in minutes!");
}
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=sessionDetail&context=").append(context).append("&sessionId=").append(sessionId).toString()));
return;
} else if ("removeSessionAttribute".equals(action)) {//$NON-NLS-1$
String sessionId = req.getParameter("sessionId");//$NON-NLS-1$
String name = req.getParameter("attributeName");//$NON-NLS-1$
boolean removed = MessAdmin.removeSessionAttribute(context, sessionId, name);
String outMessage = removed ? "Session attribute '" + name + "' removed." : "Session did not contain any attribute named '" + name + '\'';
req.setAttribute(Constants.APPLICATION_MESSAGE, outMessage);
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=sessionDetail&context=").append(context).append("&sessionId=").append(sessionId).toString()));
return;
} // else
// default fall-back action
displaySessionsListPage(req, resp, context);
}
private StringBuffer getMessages(HttpServletRequest req) {
StringBuffer buffer = new StringBuffer();
if (req.getAttribute(Constants.APPLICATION_MESSAGE) != null) {
buffer.append('&').append(Constants.APPLICATION_MESSAGE).append('=').append(req.getAttribute(Constants.APPLICATION_MESSAGE));
}
if (req.getAttribute(Constants.APPLICATION_ERROR) != null) {
buffer.append('&').append(Constants.APPLICATION_ERROR).append('=').append(req.getAttribute(Constants.APPLICATION_ERROR));
}
return buffer;
}
/**
* Displays the Web Applications list
* @param req
* @param resp
* @throws ServletException
* @throws IOException
*/
protected void displayWebAppsList(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
if (METHOD_POST.equals(req.getMethod())) {
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=webAppsList").append(getMessages(req)).toString()));
return;
}
req.setAttribute("applications", Server.getInstance().getApplicationInfos());//$NON-NLS-1$
// NOTE - This header will be overridden
// automatically if a RequestDispatcher.forward() call is
// ultimately invoked.
resp.setHeader("Pragma", "No-cache"); // HTTP 1.0 //$NON-NLS-1$ //$NON-NLS-2$
resp.setHeader("Cache-Control", "no-cache,no-store,max-age=0"); // HTTP 1.1 //$NON-NLS-1$ //$NON-NLS-2$
resp.setDateHeader("Expires", 0); // 0 means now //$NON-NLS-1$
getServletContext().getRequestDispatcher(webAppsListJspPath).include(req, resp);
}
/**
* Displays the HttpSessions list for a given WebApp (context)
* @param req
* @param resp
* @param context internal context name for required WebApp
* @throws ServletException
* @throws IOException
*/
protected void displaySessionsListPage(HttpServletRequest req, HttpServletResponse resp, String context) throws ServletException, IOException {
if (METHOD_POST.equals(req.getMethod())) {
StringBuffer buffer = req.getRequestURL().append("?action=sessionsList&context=").append(context);
if (req.getAttribute("sort") != null) {
buffer.append('&').append("sort=").append(req.getAttribute("sort"));
}
if (req.getAttribute("order") != null) {
buffer.append('&').append("order=").append(req.getAttribute("order"));
}
resp.sendRedirect(resp.encodeRedirectURL(buffer.append(getMessages(req)).toString()));
return;
}
Collection activeSessions = Server.getInstance().getApplication(context).getActiveSessionInfos();
String sortBy = req.getParameter("sort");//$NON-NLS-1$
String orderBy = null;
if (null != sortBy && !"".equals(sortBy.trim())) {
activeSessions = new ArrayList(activeSessions);
Comparator comparator = getComparator(sortBy);
if (comparator != null) {
orderBy = req.getParameter("order");//$NON-NLS-1$
if ("DESC".equalsIgnoreCase(orderBy)) {//$NON-NLS-1$
comparator = new ReverseComparator(comparator);
//orderBy = "ASC";
} else {
//orderBy = "DESC";
}
try {
Collections.sort((List)activeSessions, comparator);
} catch (IllegalStateException ise) {
// at least 1 session is invalidated
req.setAttribute(Constants.APPLICATION_ERROR, "Can't sort session list: one session is invalidated");
}
} else {
log("WARNING: unknown sort order: " + sortBy);
}
}
// keep sort order
req.setAttribute("sort", sortBy);
req.setAttribute("order", orderBy);
req.setAttribute("activeSessions", activeSessions);//$NON-NLS-1$
req.setAttribute("passiveSessionsIds", Server.getInstance().getApplication(context).getPassiveSessionsIds());//$NON-NLS-1$
req.setAttribute("webAppStats", Server.getInstance().getApplication(context).getApplicationInfo());//$NON-NLS-1$
// NOTE - This header will be overridden
// automatically if a RequestDispatcher.forward() call is
// ultimately invoked.
resp.setHeader("Pragma", "No-cache"); // HTTP 1.0 //$NON-NLS-1$ //$NON-NLS-2$
resp.setHeader("Cache-Control", "no-cache,no-store,max-age=0"); // HTTP 1.1 //$NON-NLS-1$ //$NON-NLS-2$
resp.setDateHeader("Expires", 0); // 0 means now //$NON-NLS-1$
getServletContext().getRequestDispatcher(sessionsListJspPath).include(req, resp);
}
/**
* Displays the details page for a given HttpSession
* @param req
* @param resp
* @param context internal context name for required WebApp
* @throws ServletException
* @throws IOException
*/
protected void displaySessionDetailPage(HttpServletRequest req, HttpServletResponse resp, String context, String sessionId) throws ServletException, IOException {
if (METHOD_POST.equals(req.getMethod())) {
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=sessionDetail&context=").append(context).append("&sessionId=").append(sessionId).append(getMessages(req)).toString()));
return;
}
Application application = Server.getInstance().getApplication(context);
Session session = application.getSession(sessionId);
if (null == session) {
String error = "WARNING: null session display requested: " + sessionId;
log(error);
req.setAttribute(Constants.APPLICATION_ERROR, error);
displaySessionsListPage(req, resp, context);
return;
}
// NOTE - This header will be overridden
// automatically if a RequestDispatcher.forward() call is
// ultimately invoked.
resp.setHeader("Pragma", "No-cache"); // HTTP 1.0 //$NON-NLS-1$ //$NON-NLS-2$
resp.setHeader("Cache-Control", "no-cache,no-store,max-age=0"); // HTTP 1.1 //$NON-NLS-1$ //$NON-NLS-2$
resp.setDateHeader("Expires", 0); // 0 means now //$NON-NLS-1$
req.setAttribute("webAppStats", application.getApplicationInfo());//$NON-NLS-1$
req.setAttribute("currentSession", session.getSessionInfo());//$NON-NLS-1$
req.setAttribute("currentSessionExtraInfo", session.getSessionInfo());//$NON-NLS-1$
getServletContext().getRequestDispatcher(sessionDetailJspPath).include(req, resp);
}
/**
* Displays the details page for a Web Application
* @param req
* @param resp
* @param context internal context name for required WebApp
* @throws ServletException
* @throws IOException
*/
protected void displayWebAppStatsPage(HttpServletRequest req, HttpServletResponse resp, String context) throws ServletException, IOException {
if (METHOD_POST.equals(req.getMethod())) {
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=webAppStats&context=").append(context).append(getMessages(req)).toString()));
return;
}
IApplicationInfo webAppStats = Server.getInstance().getApplication(context).getApplicationInfo();
// NOTE - This header will be overridden
// automatically if a RequestDispatcher.forward() call is
// ultimately invoked.
resp.setHeader("Pragma", "No-cache"); // HTTP 1.0 //$NON-NLS-1$ //$NON-NLS-2$
resp.setHeader("Cache-Control", "no-cache,no-store,max-age=0"); // HTTP 1.1 //$NON-NLS-1$ //$NON-NLS-2$
resp.setDateHeader("Expires", 0); // 0 means now //$NON-NLS-1$
req.setAttribute("webAppStats", webAppStats);//$NON-NLS-1$
getServletContext().getRequestDispatcher(webAppStatsJspPath).include(req, resp);
}
/**
* Displays the page for the Server Informations
* @param req
* @param resp
* @throws ServletException
* @throws IOException
*/
protected void displayServerInfosPage(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
if (METHOD_POST.equals(req.getMethod())) {
resp.sendRedirect(resp.encodeRedirectURL(req.getRequestURL().append("?action=serverInfos").append(getMessages(req)).toString()));
return;
}
IServerInfo serverInfo = Server.getInstance().getServerInfo();
// NOTE - This header will be overridden
// automatically if a RequestDispatcher.forward() call is
// ultimately invoked.
resp.setHeader("Pragma", "No-cache"); // HTTP 1.0 //$NON-NLS-1$ //$NON-NLS-2$
resp.setHeader("Cache-Control", "no-cache,no-store,max-age=0"); // HTTP 1.1 //$NON-NLS-1$ //$NON-NLS-2$
resp.setDateHeader("Expires", 0); // 0 means now //$NON-NLS-1$
req.setAttribute("serverInfos", serverInfo);//$NON-NLS-1$
getServletContext().getRequestDispatcher(serverInfosJspPath).include(req, resp);
}
/**
* Comparator used on the HttpSessions list, when sorting is required
* @param sortBy
* @return Comparator
*/
protected Comparator getComparator(String sortBy) {
Comparator comparator = null;
if ("CreationTime".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return new Date(session.getCreationTime());
}
};
} else if ("id".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return session.getId();
}
};
} else if ("LastAccessedTime".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return new Date(session.getLastAccessedTime());
}
};
} else if ("MaxInactiveInterval".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return new Date(session.getMaxInactiveInterval());
}
};
} else if ("new".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return ComparableBoolean.valueOf(session.isNew());
}
};
} else if ("locale".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
Locale locale = SessionUtils.guessLocaleFromSession(session);
return (null == locale) ? "" : locale.toString();
}
};
} else if ("user".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
Object user = SessionUtils.guessUserFromSession(session);
return (null == user) ? "" : user.toString();
}
};
} else if ("UsedTime".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return new Date(SessionUtils.getUsedTimeForSession(session));
}
};
} else if ("IdleTime".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return new Date(SessionUtils.getIdleTimeForSession(session));
}
};
} else if ("TTL".equalsIgnoreCase(sortBy)) {//$NON-NLS-1$
comparator = new BaseSessionComparator() {
public Comparable getComparableObject(HttpSession session) {
return new Date(SessionUtils.getTTLForSession(session));
}
};
}
//TODO: complete this to TTL, etc.
return comparator;
}
/**
* {@inheritDoc}
*/
public String getServletInfo() {
return "MessAdminServlet, copyright (c) 2005-2006 C?drik LIME";
}
/**
* {@inheritDoc}
*/
public void init() throws ServletException {
super.init();
String initAuthorizationPassword = getServletConfig().getInitParameter("AuthorizationPassword");//$NON-NLS-1$
if (null != initAuthorizationPassword) {
authorizationPassword = initAuthorizationPassword;
}
String initWebFilesRoot = getServletConfig().getInitParameter("WebFilesRoot");//$NON-NLS-1$
if (null != initWebFilesRoot) {
webFilesRoot = initWebFilesRoot;
}
if (! webFilesRoot.startsWith("/")) {
webFilesRoot = '/' + webFilesRoot;
}
if (! webFilesRoot.endsWith("/")) {
webFilesRoot += '/';
}
String initServerInfosJspPath = getServletConfig().getInitParameter("ServerInfosJsp");//$NON-NLS-1$
if (null != initServerInfosJspPath) {
serverInfosJspPath = webFilesRoot + initServerInfosJspPath;
}
String initWebAppsListJspPath = getServletConfig().getInitParameter("WebAppsListJsp");//$NON-NLS-1$
if (null != initWebAppsListJspPath) {
webAppsListJspPath = webFilesRoot + initWebAppsListJspPath;
}
String initWebAppStatsJspPathJspPath = getServletConfig().getInitParameter("WebAppStatsJsp");//$NON-NLS-1$
if (null != initWebAppStatsJspPathJspPath) {
webAppStatsJspPath = webFilesRoot + initWebAppStatsJspPathJspPath;
}
String initSessionsListJspPath = getServletConfig().getInitParameter("SessionsListJsp");//$NON-NLS-1$
if (null != initSessionsListJspPath) {
sessionsListJspPath = webFilesRoot + initSessionsListJspPath;
}
String initSessionDetailJspPath = getServletConfig().getInitParameter("SessionDetailJsp");//$NON-NLS-1$
if (null != initSessionDetailJspPath) {
sessionDetailJspPath = webFilesRoot + initSessionDetailJspPath;
}
}
}
