public void close() {
try {
if (sessionKey != RexProMessage.EMPTY_SESSION) {
SessionRequestMessage sessionKillMessageToSend = new SessionRequestMessage();
sessionKillMessageToSend.metaSetKillSession(true);
sessionKillMessageToSend.setRequestAsUUID(UUID.randomUUID());
// need to set the session here so that the server knows which one to delete.
sessionKillMessageToSend.setSessionAsUUID(this.sessionKey);
final RexProMessage rcvMessage = sendRequest(sessionKillMessageToSend, 3);
// response message will have an EMPTY_SESSION
if (rcvMessage instanceof SessionResponseMessage) {
this.sessionKey = rcvMessage.sessionAsUUID();
}
rexProConnection.close();
rexProConnection = null;
}
} catch (Exception ex) {
// likely fail is a null pointer on the session
} finally {
this.sessionKey = RexProMessage.EMPTY_SESSION;
}
}
public void open() {
if (sessionKey == RexProMessage.EMPTY_SESSION) {
SessionRequestMessage sessionRequestMessageToSend = new SessionRequestMessage();
sessionRequestMessageToSend.Username = this.username;
sessionRequestMessageToSend.Password = this.password;
sessionRequestMessageToSend.setSessionAsUUID(SessionRequestMessage.EMPTY_SESSION);
sessionRequestMessageToSend.setRequestAsUUID(UUID.randomUUID());
try {
sessionRequestMessageToSend.validateMetaData();
} catch (RexProException e) {
e.printStackTrace();
}
// if close() gets called then have to recreate the the connection here. need to factor out
// this
// RexPro class.
if (this.rexProConnection == null) {
this.rexProConnection = new RexProClientConnection(rexProHost, rexProPort);
}
final RexProMessage rcvMessage = sendRequest(sessionRequestMessageToSend, 3);
if (rcvMessage != null && rcvMessage instanceof SessionResponseMessage) {
final SessionResponseMessage sessionResponseMessage = (SessionResponseMessage) rcvMessage;
this.availableLanguages = new ArrayList<String>();
for (String lang : sessionResponseMessage.Languages) {
this.availableLanguages.add(lang);
}
this.sessionKey = rcvMessage.sessionAsUUID();
}
}
}
public RexProMessage sendRequest(
RexProMessage request, int maxRetries, int waitMsBetweenTries, int timeoutSeconds) {
int tries = 0;
RexProMessage rcvMessage = null;
// set the session for all incoming messages.
request.setSessionAsUUID(this.getSessionKey());
while (rcvMessage == null && tries < maxRetries) {
tries++;
try {
rcvMessage = rexProConnection.sendMessage(request, timeoutSeconds);
} catch (Exception ex) {
String logMessage =
"Failure sending message via RexPro. Attempt [" + tries + "] of [" + maxRetries + "].";
if (tries < maxRetries) {
logMessage = logMessage + " Trying again in " + waitMsBetweenTries + " (ms)";
}
logger.error(logMessage);
rcvMessage = null;
// wait
try {
Thread.sleep(waitMsBetweenTries);
} catch (InterruptedException ie) {
// carry on
}
}
}
return rcvMessage;
}