import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
import java.lang.reflect.Constructor;
import java.net.MalformedURLException;
import java.net.URL;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
private static final long serialVersionUID = -4937882979845826574L;
/**
- * Version number of this release. For example "4.0.0".
+ * Version number of this release. For example "5.0.0".
*/
public static final String VERSION;
/**
- * Major version number. For example 4 in 4.1.0.
+ * Major version number. For example 5 in 5.1.0.
*/
public static final int VERSION_MAJOR;
/**
- * Minor version number. For example 1 in 4.1.0.
+ * Minor version number. For example 1 in 5.1.0.
*/
public static final int VERSION_MINOR;
/**
- * Builds number. For example 0-beta1 in 4.0.0-beta1.
+ * Builds number. For example 0-custom_tag in 5.0.0-custom_tag.
*/
public static final String VERSION_BUILD;
}
Application application = null;
+ boolean UIDLrequest = false;
try {
// handle file upload if multipart request
if (ServletFileUpload.isMultipartContent(request)) {
- application = getApplication(request);
+ application = getExistingApplication(request, response);
+ if (application == null) {
+ throw new SessionExpired();
+ }
+ // Invokes context transaction listeners
+ // note: endTransaction is called on finalize below
+ ((WebApplicationContext) application.getContext())
+ .startTransaction(application, request);
getApplicationManager(application).handleFileUpload(request,
response);
return;
browser.updateBrowserProperties(request);
// TODO Add screen height and width to the GWT client
- // Gets the application
- application = getApplication(request);
-
- // Invokes context transaction listeners
- ((WebApplicationContext) application.getContext())
- .startTransaction(application, request);
-
- // Is this a download request from application
- DownloadStream download = null;
-
// Handles AJAX UIDL requests
if (request.getPathInfo() != null) {
String compare = AJAX_UIDL_URI;
compare = "/" + applicationClassname + AJAX_UIDL_URI;
}
if (request.getPathInfo().startsWith(compare)) {
+ UIDLrequest = true;
+ application = getExistingApplication(request, response);
+ if (application == null) {
+ // No existing applications found
+ final String repaintAll = request
+ .getParameter("repaintAll");
+ if ((repaintAll != null) && (repaintAll.equals("1"))) {
+ // UIDL request contains valid repaintAll=1 event,
+ // probably user wants to initiate new application
+ // through custom index.html without writeAjaxPage
+ application = getNewApplication(request, response);
+ } else {
+ // UIDL request refers to non-existing application
+ throw new SessionExpired();
+ }
+ }
+ // Invokes context transaction listeners
+ // note: endTransaction is called on finalize below
+ ((WebApplicationContext) application.getContext())
+ .startTransaction(application, request);
getApplicationManager(application).handleUidlRequest(
request, response);
return;
}
}
- // Handles the URI if the application is still running
- if (application.isRunning()) {
- download = handleURI(application, request, response);
+ // Get existing application
+ application = getExistingApplication(request, response);
+ if (application == null) {
+ // Not found, creating new application
+ application = getNewApplication(request, response);
}
+ // Invokes context transaction listeners
+ // note: endTransaction is called on finalize below
+ ((WebApplicationContext) application.getContext())
+ .startTransaction(application, request);
+
+ // Removes application if it has stopped
+ if (!application.isRunning()) {
+ endApplication(request, response, application);
+ return;
+ }
+
+ // Is this a download request from application
+ DownloadStream download = null;
+
+ // Handles the URI if the application is still running
+ download = handleURI(application, request, response);
+
// If this is not a download request
if (download == null) {
// Finds the window within the application
Window window = null;
- if (application.isRunning()) {
- window = getApplicationWindow(request, application);
- }
-
- // Removes application if it has stopped
- if (!application.isRunning()) {
- endApplication(request, response, application);
- return;
- }
+ window = getApplicationWindow(request, application);
// Sets terminal type for the window, if not already set
if (window.getTerminal() == null) {
handleDownload(download, request, response);
}
+ } catch (final SessionExpired e) {
+ // Session has expired
+ criticalNotification(request, response, "Your session has expired.");
} catch (final Throwable e) {
- // Print stacktrace
e.printStackTrace();
- // Re-throw other exceptions
- throw new ServletException(e);
+ // if this was an UIDL request, response UIDL back to client
+ if (UIDLrequest) {
+ criticalNotification(request, response,
+ "Internal error. Please notify administrator.");
+ } else {
+ // Re-throw other exceptions
+ throw new ServletException(e);
+ }
} finally {
// Notifies transaction end
if (application != null) {
}
}
+ /**
+ * Send notification to client's application. Used to notify client of
+ * critical errors and session expiration due to long inactivity. Server has
+ * no knowledge of what application client refers to.
+ *
+ * @param request
+ * the HTTP request instance.
+ * @param response
+ * the HTTP response to write to.
+ * @param caption
+ * for the notification message
+ * @throws IOException
+ * if the writing failed due to input/output error.
+ */
+ private void criticalNotification(HttpServletRequest request,
+ HttpServletResponse response, String caption) throws IOException {
+
+ final String[] urls = getAppAndWidgetUrl(request);
+ final String appUrl = urls[0];
+
+ // clients JS app is still running, but server application either
+ // no longer exists or it might fail to perform reasonably.
+ // send a notification to client's application and link how
+ // to "restart" application.
+
+ // Set the response type
+ response.setContentType("application/json; charset=UTF-8");
+ final ServletOutputStream out = response.getOutputStream();
+ final PrintWriter outWriter = new PrintWriter(new BufferedWriter(
+ new OutputStreamWriter(out, "UTF-8")));
+ // TODO review: assuming that required widgets exists and using
+ // hardcoded: PID0, name: 0
+ outWriter.print(")/*{\"changes\":[[\"change\",{\"format\": \"uidl\""
+ + ",\"pid\": \"PID0\"},[\"window\",{\"id\": \"PID0\","
+ + "\"caption\": \"Session expired\",\"name\": \"0\","
+ + "\"theme\": \"\",\"main\":true,\"v\":{\"scrollleft\":0"
+ + ",\"scrolldown\":0,\"positionx\":-1,\"positiony\":-1,"
+ + "\"scrolltop\":0,\"scrollleft\":0,\"close\":false,"
+ + "\"focused\":\"\"}},[\"orderedlayout\",{\"id\": "
+ + "\"PID1\",\"cached\":true}],[\"notifications\",{},"
+ + "[\"notification\",{\"caption\": \"" + caption
+ + "\",\"message\": \"<br />Please click " + "<a href=\\\""
+ + appUrl + "\\\">here</a> to restart your application.<br />"
+ + "You can also click your browser's"
+ + " refresh button.<br />\","
+ + "\"position\":1,\"delay\":-1,\"style\": \"error\"}]]]]],"
+ + " \"meta\" : {}, \"resources\": {}, \"locales\":[]");
+ outWriter.flush();
+ outWriter.close();
+ out.flush();
+ }
+
+ /**
+ * Resolve application URL and widgetset URL. Widgetset is not application
+ * specific.
+ *
+ * @param request
+ * @return string array consisting of application url first and then
+ * widgetset url.
+ */
+ private String[] getAppAndWidgetUrl(HttpServletRequest request) {
+ // don't use server and port in uri. It may cause problems with some
+ // virtual server configurations which lose the server name
+ String appUrl = null;
+ String widgetsetUrl = null;
+ if (applicationRunnerMode) {
+ final String[] URIparts = getApplicationRunnerURIs(request);
+ widgetsetUrl = URIparts[0];
+ if (widgetsetUrl.equals("/")) {
+ widgetsetUrl = "";
+ }
+ appUrl = URIparts[1];
+ } else {
+ String[] urlParts;
+ try {
+ urlParts = getApplicationUrl(request).toString().split("\\/");
+ appUrl = "";
+ widgetsetUrl = "";
+ // if context is specified add it to widgetsetUrl
+ if (urlParts[3].equals(request.getContextPath().replaceAll(
+ "\\/", ""))) {
+ widgetsetUrl += "/" + urlParts[3];
+ }
+ for (int i = 3; i < urlParts.length; i++) {
+ appUrl += "/" + urlParts[i];
+ }
+ if (appUrl.endsWith("/")) {
+ appUrl = appUrl.substring(0, appUrl.length() - 1);
+ }
+ } catch (final MalformedURLException e) {
+ e.printStackTrace();
+ }
+
+ }
+ return new String[] { appUrl, widgetsetUrl };
+ }
+
/**
*
* @param request
+ "<script type=\"text/javascript\">\n"
+ " var itmill = {\n" + " appUri:'");
- // don't use server and port in uri. It may cause problems with some
- // virtual server configurations which lose the server name
- String appUrl = "";
- // widgetset is not application specific
- String widgetsetUrl = "";
- if (applicationRunnerMode) {
- final String[] URIparts = getApplicationRunnerURIs(request);
- widgetsetUrl = URIparts[0];
- if (widgetsetUrl.equals("/")) {
- widgetsetUrl = "";
- }
- appUrl = URIparts[1];
- } else {
- final String[] urlParts = getApplicationUrl(request).toString()
- .split("\\/");
- widgetsetUrl = "";
- // if context is specified add it to widgetsetUrl
- if (urlParts[3].equals(request.getContextPath().replaceAll("\\/",
- ""))) {
- widgetsetUrl += "/" + urlParts[3];
- }
- for (int i = 3; i < urlParts.length; i++) {
- appUrl += "/" + urlParts[i];
- }
- if (appUrl.endsWith("/")) {
- appUrl = appUrl.substring(0, appUrl.length() - 1);
- }
- }
+ final String[] urls = getAppAndWidgetUrl(request);
+ final String appUrl = urls[0];
+ final String widgetsetUrl = urls[1];
page.write(appUrl);
String widgetset = applicationProperties
*
* @param request
* the HTTP request.
+ * @param response
* @return Application instance, or null if the URL does not map to valid
* application.
* @throws MalformedURLException
* if the application is denied access to the persistent
* data store represented by the given URL.
* @throws SAXException
- * @throws LicenseViolation
- * @throws InvalidLicenseFile
- * @throws LicenseSignatureIsInvalid
- * @throws LicenseFileHasNotBeenRead
* @throws IllegalAccessException
* @throws InstantiationException
*/
- private Application getApplication(HttpServletRequest request)
- throws MalformedURLException, SAXException, IllegalAccessException,
- InstantiationException {
+ private Application getExistingApplication(HttpServletRequest request,
+ HttpServletResponse response) throws MalformedURLException,
+ SAXException, IllegalAccessException, InstantiationException {
// Ensures that the session is still valid
final HttpSession session = request.getSession(true);
break;
}
}
- // Creates application, because a running one was not found
+
+ // Existing application not found
+ return null;
+ }
+
+ /**
+ * Creates new application for given request.
+ *
+ * @param request
+ * the HTTP request.
+ * @param response
+ * @return Application instance, or null if the URL does not map to valid
+ * application.
+ * @throws MalformedURLException
+ * if the application is denied access to the persistent
+ * data store represented by the given URL.
+ * @throws SAXException
+ * @throws IllegalAccessException
+ * @throws InstantiationException
+ */
+ private Application getNewApplication(HttpServletRequest request,
+ HttpServletResponse response) throws MalformedURLException,
+ SAXException, IllegalAccessException, InstantiationException {
+
+ // Create application
final WebApplicationContext context = WebApplicationContext
.getApplicationContext(request.getSession());
final URL applicationUrl;
// Starts application
application.start(applicationUrl, applicationProperties, context);
+
return application;
} catch (final IllegalAccessException e) {
projects / vaadin-framework.git / commitdiff