/**
* Writes the given value only if it is serializable. If not, null is written.
*
* @since 5.0.7
*/
public static void smartWrite(ObjectOutputStream s, Object val) throws IOException {
final boolean bser =
val instanceof java.io.Serializable || val instanceof java.io.Externalizable;
s.writeObject(bser ? val : null);
if (!bser && val != null && logio.debugable())
logio.debug("Skip not-serializable object: " + val);
}
/**
* rollback the current session.
*
* @param exec the exection to clean up.
* @param ex the StaleObjectStateException being thrown (and not handled) during the execution
*/
private void rollback(Execution exec, Throwable ex) {
try {
if (HibernateUtil.currentSession().getTransaction().isActive()) {
log.debug("Trying to rollback database transaction after exception:" + ex);
HibernateUtil.currentSession().getTransaction().rollback();
}
} catch (Throwable rbEx) {
log.error("Could not rollback transaction after exception! Original Exception:\n" + ex, rbEx);
}
}
public void addRequests(Collection requests) {
for (Iterator it = requests.iterator(); it.hasNext(); ) {
final AuRequest request = (AuRequest) it.next();
try {
request.activate();
if (!isObsolete(request)) addRequest(request);
} catch (ComponentNotFoundException ex) { // ignore it
// ignore it since a long request might remove a timer
// while clients already queues onTimer generated by the timer
if (log.debugable()) log.debug("Ignore request: " + ex.getMessage());
}
}
}
/** Writes only serializable elements of the specified collection. */
public static <T> void smartWrite(ObjectOutputStream s, Collection<T> col) throws IOException {
if (col != null) {
final boolean debug = logio.debugable();
for (T val : col) {
if ((val instanceof Serializable) || (val instanceof Externalizable)) {
try {
s.writeObject(val);
} catch (java.io.NotSerializableException ex) {
logio.error("Unable to serialize item: " + val);
throw ex;
}
} else if (val != null && debug) {
logio.debug("Skip not-serializable item: " + val);
}
}
}
s.writeObject(null);
}
/**
* Writes only serializable elements of the specified array.
*
* <p>To read back, use {@link #smartRead(ObjectInputStream, Collection)}.
*
* @since 3.0.0
*/
public static <T> void smartWrite(ObjectOutputStream s, T[] ary) throws IOException {
if (ary != null) {
final boolean debug = logio.debugable();
for (int j = 0; j < ary.length; ++j) {
final T val = ary[j];
if ((val instanceof Serializable) || (val instanceof Externalizable)) {
try {
s.writeObject(val);
} catch (java.io.NotSerializableException ex) {
logio.error("Unable to serialize item: " + val);
throw ex;
}
} else if (val != null && debug) {
logio.debug("Skip not-serializable item: " + val);
}
}
}
s.writeObject(null);
}
/**
* Clones the specified object. Use clone() if Cloeable. Otherwise, try to serialize/deserialize
* it by use of MarshalledObject.
*
* <p>If o is null, null is returned.
*
* @exception SystemException if failed to clone
*/
public static final Object clone(Object o) {
if (o == null) return o;
try {
final Class<?> kls = o.getClass();
if (kls.isArray()) return ArraysX.clone(o);
if (o instanceof Cloneable) {
try {
return kls.getMethod("clone").invoke(o);
} catch (NoSuchMethodException ex) {
if (log.debugable()) log.debug("No clone() for " + kls);
}
}
// :TODO: MarshalledObject is said with very bad performance, change it
// if exists other good deep clone method.
return new MarshalledObject<Object>(o).get();
} catch (Exception ex) {
throw SystemException.Aide.wrap(ex);
}
}
/**
* Writes only serializable entries of the specified map. Non-serializable attributes are ignored.
*/
public static <K, V> void smartWrite(ObjectOutputStream s, Map<K, V> map) throws IOException {
if (map != null) {
final boolean debug = logio.debugable();
for (Map.Entry<K, V> me : map.entrySet()) {
final K nm = me.getKey();
final V val = me.getValue();
if (((nm instanceof Serializable) || (nm instanceof Externalizable))
&& (val == null || (val instanceof Serializable) || (val instanceof Externalizable))) {
try {
s.writeObject(nm);
s.writeObject(val);
} catch (java.io.NotSerializableException ex) {
logio.error("Unable to serialize entry: " + nm + '=' + val);
throw ex;
}
} else if (nm != null && debug) {
logio.debug("Skip not-serializable entry: " + nm + '=' + val);
}
}
}
s.writeObject(null); // denote end-of-map
}
// -- ExecutionCleanup --//
public void cleanup(Execution exec, Execution parent, List errs) {
if (parent == null) { // the root execution of a servlet request
try {
if (errs == null || errs.isEmpty()) {
// Commit and cleanup
log.debug("Committing the database transaction: " + exec);
HibernateUtil.currentSession().getTransaction().commit();
} else {
final Throwable ex = (Throwable) errs.get(0);
if (ex instanceof StaleObjectStateException) {
// default implementation does not do any optimistic concurrency
// control; it simply rollback the transaction.
handleStaleObjectStateException(exec, (StaleObjectStateException) ex);
} else {
// default implementation log the stacktrace and then rollback
// the transaction.
handleOtherException(exec, ex);
}
}
} finally {
HibernateUtil.closeSession(); // always close it
}
}
}
// -- ExecutionInit --//
public void init(Execution exec, Execution parent) {
if (parent == null) { // the root execution of a servlet request
log.debug("Starting a database transaction: " + exec);
HibernateUtil.currentSession().beginTransaction();
}
}
/**
* Process asynchronous update requests from the client.
*
* @since 3.0.0
*/
protected void process(Session sess, HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
final String errClient = request.getHeader("ZK-Error-Report");
if (errClient != null)
if (log.debugable())
log.debug("Error found at client: " + errClient + "\n" + Servlets.getDetail(request));
// parse desktop ID
final WebApp wapp = sess.getWebApp();
final WebAppCtrl wappc = (WebAppCtrl) wapp;
final AuDecoder audec = getAuDecoder(wapp);
final String dtid = audec.getDesktopId(request);
if (dtid == null) {
// Bug 1929139: incomplete request (IE only)
if (log.debugable()) {
final String msg = "Incomplete request\n" + Servlets.getDetail(request);
log.debug(msg);
}
response.sendError(467, "Incomplete request");
return;
}
Desktop desktop = getDesktop(sess, dtid);
if (desktop == null) {
final String cmdId = audec.getFirstCommand(request);
if (!"rmDesktop".equals(cmdId))
desktop = recoverDesktop(sess, request, response, wappc, dtid);
if (desktop == null) {
response.setIntHeader("ZK-Error", response.SC_GONE); // denote timeout
sessionTimeout(request, response, wapp, dtid);
return;
}
}
WebManager.setDesktop(request, desktop);
// reason: a new page might be created (such as include)
final String sid = request.getHeader("ZK-SID");
if (sid != null) // Some client might not have ZK-SID
response.setHeader("ZK-SID", sid);
// parse commands
final Configuration config = wapp.getConfiguration();
final List aureqs;
boolean keepAlive = false;
try {
final boolean timerKeepAlive = config.isTimerKeepAlive();
aureqs = audec.decode(request, desktop);
for (Iterator it = aureqs.iterator(); it.hasNext(); ) {
final String cmdId = ((AuRequest) it.next()).getCommand();
keepAlive = !(!timerKeepAlive && Events.ON_TIMER.equals(cmdId)) && !"dummy".equals(cmdId);
// dummy is used for PollingServerPush for piggyback
if (keepAlive) break; // done
}
} catch (Throwable ex) {
log.warningBriefly(ex);
responseError(request, response, Exceptions.getMessage(ex));
return;
}
if (aureqs.isEmpty()) {
final String errmsg = "Illegal request: cmd required";
log.debug(errmsg);
responseError(request, response, errmsg);
return;
}
((SessionCtrl) sess).notifyClientRequest(keepAlive);
// if (log.debugable()) log.debug("AU request: "+aureqs);
final DesktopCtrl desktopCtrl = (DesktopCtrl) desktop;
final Execution exec = new ExecutionImpl(getServletContext(), request, response, desktop, null);
if (sid != null) ((ExecutionCtrl) exec).setRequestId(sid);
final AuWriter out = AuWriters.newInstance();
out.setCompress(_compress);
out.open(
request,
response,
desktop.getDevice().isSupported(Device.RESEND)
? getProcessTimeout(config.getResendDelay())
: 0);
// Note: getResendDelay() might return nonpositive
try {
wappc.getUiEngine().execUpdate(exec, aureqs, out);
} catch (RequestOutOfSequenceException ex) {
log.warning(ex.getMessage());
response.setHeader("ZK-SID", sid);
response.setIntHeader("ZK-Error", AuResponse.SC_OUT_OF_SEQUENCE);
}
out.close(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
final String pi = Https.getThisPathInfo(request);
// if (log.finerable()) log.finer("Path info: "+pi);
final ServletContext ctx = getServletContext();
final boolean withpi = pi != null && pi.length() != 0;
if (withpi && pi.startsWith(ClassWebResource.PATH_PREFIX)) {
// use HttpSession to avoid loading SerializableSession in GAE
// and don't retrieve session if possible
final ClassWebResource cwr = getClassWebResource();
final HttpSession hsess = shallSession(cwr, pi) ? request.getSession(false) : null;
Object oldsess = null;
if (hsess == null) {
oldsess = SessionsCtrl.getRawCurrent();
SessionsCtrl.setCurrent(new SessionResolverImpl(ctx, request));
// it might be created later
}
WebApp wapp;
Session sess;
final Object old =
hsess != null
? (wapp = WebManager.getWebAppIfAny(ctx)) != null
&& (sess = SessionsCtrl.getSession(wapp, hsess)) != null
? I18Ns.setup(sess, request, response, "UTF-8")
: I18Ns.setup(hsess, request, response, "UTF-8")
: Charsets.setup(null, request, response, "UTF-8");
try {
cwr.service(request, response, pi.substring(ClassWebResource.PATH_PREFIX.length()));
} finally {
if (hsess != null) I18Ns.cleanup(request, old);
else {
Charsets.cleanup(request, old);
SessionsCtrl.setRawCurrent(oldsess);
}
}
return; // done
}
final Session sess = WebManager.getSession(ctx, request, false);
if (withpi) {
final AuExtension aue = getAuExtensionByPath(pi);
if (aue == null) {
response.sendError(response.SC_NOT_FOUND);
log.debug("Unknown path info: " + pi);
return;
}
Object oldsess = null;
if (sess == null) {
oldsess = SessionsCtrl.getRawCurrent();
SessionsCtrl.setCurrent(new SessionResolverImpl(ctx, request));
// it might be created later
}
final Object old =
sess != null
? I18Ns.setup(sess, request, response, "UTF-8")
: Charsets.setup(null, request, response, "UTF-8");
try {
aue.service(request, response, pi);
} finally {
if (sess != null) I18Ns.cleanup(request, old);
else {
Charsets.cleanup(request, old);
SessionsCtrl.setRawCurrent(oldsess);
}
}
return; // done
}
// AU
if (sess == null) {
response.setIntHeader("ZK-Error", response.SC_GONE); // denote timeout
// Bug 1849088: rmDesktop might be sent after invalidate
// Bug 1859776: need send response to client for redirect or others
final WebApp wapp = WebManager.getWebAppIfAny(ctx);
final String dtid = getAuDecoder(wapp).getDesktopId(request);
if (dtid != null) sessionTimeout(request, response, wapp, dtid);
return;
}
// Feature 3285074 add no-cache for security risk.
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Cache-Control", "no-store");
response.setHeader("Expires", "-1");
final Object old = I18Ns.setup(sess, request, response, "UTF-8");
try {
process(sess, request, response);
} finally {
I18Ns.cleanup(request, old);
}
}
