/**
* Send a subscription to a broker with the given URI. In case the brokerURI is null, the
* subscription will be sent to the default broker.
*
* @param sub The subscription to be sent.
* @param brokerURI The broker to which the subscription is to be sent.
* @return The SubscriptionMessage containing the given subscription.
* @throws ClientException Upon the following situations:
* <ul>
* <li>The client is not connected to the specified broker.
* <li>Given brokerURI is badly formated.
* <li>There is an error in sending the subscription message.
* </ul>
*/
public SubscriptionMessage subscribe(Subscription sub, String brokerURI) throws ClientException {
if (!isConnected()) throw new ClientException("Not connected to any broker");
try {
if (brokerURI == null || brokerURI.equals("")) brokerURI = defaultBrokerAddress.getNodeURI();
BrokerState brokerState = getBrokerState(brokerURI);
if (brokerState == null) {
throw new ClientException("Not connected to broker " + brokerURI);
}
MessageDestination clientDest =
MessageDestination.formatClientDestination(
clientID, brokerState.getBrokerAddress().getNodeURI());
SubscriptionMessage subMsg =
new SubscriptionMessage(
sub, getNextMessageID(brokerState.getBrokerAddress().getNodeURI()), clientDest);
// TODO: fix this hack for historic queries
Map<String, Predicate> predMap = subMsg.getSubscription().getPredicateMap();
if (predMap.get("_start_time") != null) {
SimpleDateFormat timeFormat = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy");
try {
Date startTime = timeFormat.parse((String) (predMap.get("_start_time")).getValue());
predMap.remove("_start_time");
subMsg.setStartTime(startTime);
} catch (java.text.ParseException e) {
exceptionLogger.error("Fail to convert Date format : " + e);
}
}
if (predMap.get("_end_time") != null) {
SimpleDateFormat timeFormat = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy");
try {
Date endTime = timeFormat.parse((String) (predMap.get("_end_time")).getValue());
predMap.remove("_end_time");
subMsg.setEndTime(endTime);
} catch (java.text.ParseException e) {
exceptionLogger.error("Fail to convert Date format : " + e);
}
}
String msgID = brokerState.getMsgSender().send(subMsg, HostType.CLIENT);
subMsg.setMessageID(msgID);
if (clientConfig.detailState) brokerState.addSubMsg(subMsg);
return subMsg;
} catch (CommunicationException e) {
throw new ClientException(e.getMessage());
}
}
