public void onMessage(Message m) {
_logger.info("Failover exchange notified cluster membership change");
String currentBrokerIP = "";
try {
currentBrokerIP = InetAddress.getByName(_currentBrokerDetail.getHost()).getHostAddress();
} catch (Exception e) {
_logger.warn("Unable to resolve current broker host name", e);
}
List<BrokerDetails> brokerList = new ArrayList<BrokerDetails>();
try {
List<String> list = (List<String>) m.getObjectProperty("amq.failover");
for (String brokerEntry : list) {
String[] urls = brokerEntry.substring(5).split(",");
for (String url : urls) {
String[] tokens = url.split(":");
if (tokens[0].equalsIgnoreCase(_originalBrokerDetail.getTransport())) {
BrokerDetails broker = new BrokerDetails(_originalBrokerDetail);
broker.setTransport(tokens[0]);
broker.setHost(tokens[1]);
broker.setPort(Integer.parseInt(tokens[2]));
brokerList.add(broker);
if (currentBrokerIP.equals(broker.getHost())
&& _currentBrokerDetail.getPort() == broker.getPort()) {
_currentBrokerIndex = brokerList.indexOf(broker);
}
break;
}
}
}
} catch (JMSException e) {
_logger.error("Error parsing the message sent by failover exchange", e);
}
synchronized (_brokerListLock) {
_connectionDetails.setBrokerDetails(brokerList);
}
_logger.info("============================================================");
_logger.info("Updated cluster membership details " + _connectionDetails);
_logger.info("============================================================");
}
public BrokerDetails getNextBrokerDetails() {
BrokerDetails broker = null;
synchronized (_brokerListLock) {
if (_currentBrokerIndex == (_connectionDetails.getBrokerCount() - 1)) {
_currentBrokerIndex = 0;
} else {
_currentBrokerIndex++;
}
broker = _connectionDetails.getBrokerDetails(_currentBrokerIndex);
// When the broker list is updated it will include the current broker as well
// There is no point trying it again, so trying the next one.
if (_currentBrokerDetail != null
&& broker.getHost().equals(_currentBrokerDetail.getHost())
&& broker.getPort() == _currentBrokerDetail.getPort()) {
if (_connectionDetails.getBrokerCount() > 1) {
return getNextBrokerDetails();
} else {
_failedAttemps++;
return null;
}
}
}
String delayStr = broker.getProperty(BrokerDetails.OPTIONS_CONNECT_DELAY);
if (delayStr != null) {
Long delay = Long.parseLong(delayStr);
_logger.info("Delay between connect retries:" + delay);
try {
Thread.sleep(delay);
} catch (InterruptedException ie) {
return null;
}
} else {
_logger.info(
"No delay between connect retries, use tcp://host:port?connectdelay='value' to enable.");
}
_failedAttemps++;
_currentBrokerDetail = broker;
return broker;
}