/**
* If CS throws an exception it handled and transalated to a Openfire exception if possible. This
* is done using <code>exceptionMap</code> that has a mapping from CS to OF. If no mapping is
* found then it tries to instantiete the original exception. If this fails it throws a <code>
* Exception</code> with the message of the CS exception.
*
* @param response the response from CS to check if it is an exception message.
* @throws Exception if the response is an exception message.
*/
private void checkFault(Element response) throws Exception {
Node node = response.selectSingleNode("ns1:faultstring");
if (node != null) {
String exceptionText = node.getText();
// Text accepted samples:
// 'java.lang.Exception: Exception message'
// 'java.lang.Exception'
// Get the exception class and message if any
int index = exceptionText.indexOf(":");
String className;
String message;
// If there is no message, save the class only
if (index == -1) {
className = exceptionText;
message = null;
} else {
// Else save both
className = exceptionText.substring(0, index);
message = exceptionText.substring(index + 2);
}
// Map the exception to a Openfire one, if possible
if (exceptionMap.containsKey(className)) {
className = exceptionMap.get(className);
}
// Tries to create an instance with the message
Exception exception;
try {
Class exceptionClass = Class.forName(className);
if (message == null) {
exception = (Exception) exceptionClass.newInstance();
} else {
Constructor constructor = exceptionClass.getConstructor(String.class);
exception = (Exception) constructor.newInstance(message);
}
} catch (Exception e) {
// failed to create an specific exception, creating a standard one.
exception = new Exception(exceptionText);
}
throw exception;
}
}
public static Data getHTTPData(
HttpServletRequest req, HttpServletResponse res, String surl, long since)
throws DataSourceException, IOException {
int tries = 1;
// timeout msecs of time we're allowed in this routine
// we must return or throw an exception. 0 means infinite.
int timeout = mTimeout;
if (req != null) {
String timeoutParm = req.getParameter("timeout");
if (timeoutParm != null) {
timeout = Integer.parseInt(timeoutParm);
}
}
long t1 = System.currentTimeMillis();
long elapsed = 0;
if (surl == null) {
surl = getURL(req);
}
while (true) {
String m = null;
long tout;
if (timeout > 0) {
tout = timeout - elapsed;
if (tout <= 0) {
throw new InterruptedIOException(
/* (non-Javadoc)
* @i18n.test
* @org-mes=p[0] + " timed out"
*/
org.openlaszlo.i18n.LaszloMessages.getMessage(
HTTPDataSource.class.getName(), "051018-194", new Object[] {surl}));
}
} else {
tout = 0;
}
try {
HttpData data = getDataOnce(req, res, since, surl, 0, (int) tout);
if (data.code >= 400) {
data.release();
throw new DataSourceException(errorMessage(data.code));
}
return data;
} catch (HttpRecoverableException e) {
// This type of exception should be retried.
if (tries++ > mMaxRetries) {
throw new InterruptedIOException(
/* (non-Javadoc)
* @i18n.test
* @org-mes="too many retries, exception: " + p[0]
*/
org.openlaszlo.i18n.LaszloMessages.getMessage(
HTTPDataSource.class.getName(), "051018-217", new Object[] {e.getMessage()}));
}
mLogger.warn(
/* (non-Javadoc)
* @i18n.test
* @org-mes="retrying a recoverable exception: " + p[0]
*/
org.openlaszlo.i18n.LaszloMessages.getMessage(
HTTPDataSource.class.getName(), "051018-226", new Object[] {e.getMessage()}));
} catch (HttpException e) {
String msg =
/* (non-Javadoc)
* @i18n.test
* @org-mes="HttpException: " + p[0]
*/
org.openlaszlo.i18n.LaszloMessages.getMessage(
HTTPDataSource.class.getName(), "051018-235", new Object[] {e.getMessage()});
throw new IOException(
/* (non-Javadoc)
* @i18n.test
* @org-mes="HttpException: " + p[0]
*/
org.openlaszlo.i18n.LaszloMessages.getMessage(
HTTPDataSource.class.getName(), "051018-235", new Object[] {e.getMessage()}));
} catch (IOException e) {
try {
Class ssle = Class.forName("javax.net.ssl.SSLException");
if (ssle.isAssignableFrom(e.getClass())) {
throw new DataSourceException(
/* (non-Javadoc)
* @i18n.test
* @org-mes="SSL exception: " + p[0]
*/
org.openlaszlo.i18n.LaszloMessages.getMessage(
HTTPDataSource.class.getName(), "051018-256", new Object[] {e.getMessage()}));
}
} catch (ClassNotFoundException cfne) {
}
throw e;
}
long t2 = System.currentTimeMillis();
elapsed = (t2 - t1);
}
}