/** On network error, create ExceptionEvent and delever it to all listeners on all events. */
protected void processNetworkError(Exception ex) {
Hashtable tmpRequestList = new Hashtable();
tmpRequestList.putAll(_requestList);
int[] ids = _msgQueue.getMessageIDs();
if (ids != null) {
for (int i = 0; i < ids.length; i++) {
tmpRequestList.remove(Integer.toString(ids[i]));
}
}
Collection reqList = tmpRequestList.values();
for (Iterator iter = reqList.iterator(); iter.hasNext(); ) {
Request request = (Request) iter.next();
dispatchException(ex, request);
}
}
/**
* Reset error searches. Clear cache only if true is passed to argument
*
* @param clearCaches
*/
protected void resetErrorSearches(boolean clearCaches) {
Hashtable tmpReqList = new Hashtable();
tmpReqList.putAll(_requestList);
int[] ids = _msgQueue.getMessageIDs();
if (ids != null) {
for (int i = 0; i < ids.length; i++) {
String reqID = Integer.toString(ids[i]);
tmpReqList.remove(reqID);
}
}
Collection reqList = tmpReqList.values();
for (Iterator iter = reqList.iterator(); iter.hasNext(); ) {
Request req = (Request) iter.next();
_requestList.remove(req.getRequestID());
}
_retryInterval = getPropertyIntValue(EVENT_CONNECTION_RETRY_INTERVAL, _retryInterval);
RetryTask task = new RetryTask(tmpReqList);
task.clearCache(clearCaches);
SystemTimer.getTimer()
.schedule(task, new Date(((System.currentTimeMillis() + _retryInterval) / 1000) * 1000));
}
/**
* Main monitor thread loop. Wait for persistent search change notifications
*
* @supported.api
*/
public void run() {
try {
if (debugger.messageEnabled()) {
debugger.message(
"EventService.run(): Event Thread is running! "
+ "No Idle timeout Set: "
+ _idleTimeOut
+ " minutes.");
}
boolean successState = true;
LDAPMessage message = null;
while (successState) {
try {
if (debugger.messageEnabled()) {
debugger.message("EventService.run(): Waiting for " + "response");
}
synchronized (this) {
if (_requestList.isEmpty()) {
wait();
}
}
message = _msgQueue.getResponse();
successState = processResponse(message);
} catch (LDAPInterruptedException ex) {
if (_shutdownCalled) {
break;
} else {
if (debugger.warningEnabled()) {
debugger.warning("EventService.run() " + "LDAPInterruptedException received:", ex);
}
}
} catch (LDAPException ex) {
if (_shutdownCalled) {
break;
} else {
int resultCode = ex.getLDAPResultCode();
if (debugger.warningEnabled()) {
debugger.warning("EventService.run() LDAPException " + "received:", ex);
}
_retryErrorCodes = getPropertyRetryErrorCodes(EVENT_CONNECTION_ERROR_CODES);
// Catch special error codition in
// LDAPSearchListener.getResponse
String msg = ex.getLDAPErrorMessage();
if ((resultCode == LDAPException.OTHER)
&& (msg != null)
&& msg.equals("Invalid response")) {
// We should not try to resetError and retry
processNetworkError(ex);
} else {
if (_retryErrorCodes.contains("" + resultCode)) {
resetErrorSearches(true);
} else { // Some other network error
processNetworkError(ex);
}
}
}
}
} // end of while loop
} catch (InterruptedException ex) {
if (!_shutdownCalled) {
if (debugger.warningEnabled()) {
debugger.warning("EventService.run(): Interrupted exception" + " caught.", ex);
}
}
} catch (RuntimeException ex) {
if (debugger.warningEnabled()) {
debugger.warning("EventService.run(): Runtime exception " + "caught.", ex);
}
// rethrow the Runtime exception to let the container handle the
// exception.
throw ex;
} catch (Exception ex) {
if (debugger.warningEnabled()) {
debugger.warning("EventService.run(): Unknown exception " + "caught.", ex);
}
// no need to rethrow.
} catch (Throwable t) {
// Catching Throwable to prevent the thread from exiting.
if (debugger.warningEnabled()) {
debugger.warning(
"EventService.run(): Unknown exception " + "caught. Sleeping for a while.. ", t);
}
// rethrow the Error to let the container handle the error.
throw new Error(t);
} finally {
synchronized (this) {
if (!_shutdownCalled) {
// try to restart the monitor thread.
_monitorThread = null;
startMonitorThread();
}
}
}
} // end of thread
/**
* Adds a listener to the directory.
*
* @supported.api
*/
protected synchronized String addListener(
SSOToken token,
IDSEventListener listener,
String base,
int scope,
String filter,
int operations)
throws LDAPException, EventException {
if (_shutdownCalled) {
throw new EventException(i18n.getString(IUMSConstants.DSCFG_CONNECTFAIL));
}
LDAPConnection lc = null;
try {
// Check for SMS listener and use "sms" group if present
if ((listener.getClass().getName().equals("com.sun.identity.sm.ldap.LDAPEventManager"))
&& (cm.getServerGroup("sms") != null)) {
lc = cm.getNewConnection("sms", LDAPUser.Type.AUTH_ADMIN);
} else {
lc = cm.getNewAdminConnection();
}
} catch (LDAPServiceException le) {
throw new EventException(i18n.getString(IUMSConstants.DSCFG_CONNECTFAIL), le);
}
LDAPSearchConstraints cons = lc.getSearchConstraints();
// Create Persistent Search Control object
LDAPPersistSearchControl psearchCtrl =
new LDAPPersistSearchControl(operations, CHANGES_ONLY, RETURN_CONTROLS, IS_CRITICAL);
// Add LDAPControl array to the search constraint object
cons.setServerControls(psearchCtrl);
cons.setBatchSize(1);
// Listeners can not read attributes from the event.
// Request only javaClassName to be able to determine object type
String[] attrs = new String[] {"objectclass"};
LDAPSearchListener searchListener = null;
// Set (asynchronous) persistent search request in the DS
try {
if (debugger.messageEnabled()) {
debugger.message(
"EventService.addListener() - Submiting "
+ "Persistent Search on: "
+ base
+ " for listener: "
+ listener);
}
searchListener = lc.search(base, scope, filter, attrs, false, null, cons);
} catch (LDAPException le) {
if ((lc != null) && lc.isConnected()) {
try {
lc.disconnect();
} catch (Exception ex) {
// ignored
}
}
debugger.error(
"EventService.addListener() - Failed to set " + "Persistent Search" + le.getMessage());
throw le;
}
int[] outstandingRequests = searchListener.getMessageIDs();
int id = outstandingRequests[outstandingRequests.length - 1];
String reqID = Integer.toString(id);
long startTime = System.currentTimeMillis();
Request request =
new Request(
id, reqID, token, base, scope, filter, attrs, operations, listener, lc, startTime);
_requestList.put(reqID, request);
// Add this search request to the m_msgQueue so it can be
// processed by the monitor thread
if (_msgQueue == null) {
_msgQueue = searchListener;
} else {
_msgQueue.merge(searchListener);
}
if (!_isThreadStarted) {
startMonitorThread();
} else {
if (_requestList.size() == 1) {
notify();
}
}
if (debugger.messageEnabled()) {
outstandingRequests = _msgQueue.getMessageIDs();
debugger.message(
"EventService.addListener(): merged Listener: "
+ " requestID: "
+ reqID
+ " & Request: "
+ request
+ " on to message Queue. No. of current outstanding "
+ "requests = "
+ outstandingRequests.length);
}
// Create new (EventService) Thread, if one doesn't exist.
return reqID;
}